2024

• M. Arif, J. A. Maya, N. Anandan, D. Arronde Perez, A. M. Tonello, H. Zangl, and B. Rinner, “Resource-Efficient Ubiquitous Sensor Networks for Smart Agriculture: A Survey,” IEEE Access, vol. 12, p. 193332–193364, 2024. doi:10.1109/ACCESS.2024.3516814
  [BibTeX] [Download PDF]

  @article{0f4de0c6943ec64e0194400a27860031,
  author = {Arif, Muhammad and Maya, Juan Augusto and Anandan, Narendiran and Arronde Perez, Dailys and Tonello, Andrea M. and Zangl, Hubert and Rinner, Bernhard},
  title = {{Resource-Efficient Ubiquitous Sensor Networks for Smart Agriculture: A Survey}},
  journal = {IEEE Access},
  year = {2024},
  doi = {10.1109/ACCESS.2024.3516814},
  volume = {12},
  pages = {193332--193364},
  month = {12},
  url = {https://ieeexplore.ieee.org/abstract/document/10798427},
  }

• N. A. Letizia, N. Novello, and A. M. Tonello, “Mutual Information Estimation via f-Divergence and Data Derangements,” in Thirty-Eighth Annual Conference on Neural Information Processing Systems (NeurIPS), 2024.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c49288d33f01928b075a7501ad,
  author = {Letizia, Nunzio Alexandro and Novello, Nicola and Tonello, Andrea M.},
  title = {{Mutual Information Estimation via f-Divergence and Data Derangements}},
  booktitle = {Thirty-Eighth Annual Conference on Neural Information Processing Systems (NeurIPS)},
  year = {2024},
  month = {12},
  url = {https://nips.cc/virtual/2024/poster/95307},
  }

• A. Vogell, U. Schilcher, J. F. Schmidt, and C. Bettstetter, “Chimera states in pulse-coupled oscillator systems,” Physical Review E, vol. 110, 2024. doi:10.1103/PhysRevE.110.054214
  [BibTeX] [Abstract]
  

  Coupled oscillator systems can lead to states in which synchrony and chaos coexist. These states are called “chimera states.” The mechanism that explains the occurrence of chimera states is not well understood, especially in pulse-coupled oscillators. We study a variation of a pulse-coupled oscillator model that has been shown to produce chimera states, demonstrate that it reproduces several of the expected chimera properties, like the formation of multiple heads and the ability to control the natural drift that Kuramoto's chimera states experience in a ring, and explain how chimera states emerge. Our contribution is defining the model, analyzing the mechanism leading to chimera states, and comparing it with examples from the field of Kuramoto oscillators.

  @article{0f4de0c5938561c30193871b02c60079,
  author = {Vogell, Arke and Schilcher, Udo and Schmidt, Jorge Friedrich and Bettstetter, Christian},
  title = {{Chimera states in pulse-coupled oscillator systems}},
  journal = {Physical Review E},
  year = {2024},
  abstract = {Coupled oscillator systems can lead to states in which synchrony and chaos coexist. These states are called “chimera states.” The mechanism that explains the occurrence of chimera states is not well understood, especially in pulse-coupled oscillators. We study a variation of a pulse-coupled oscillator model that has been shown to produce chimera states, demonstrate that it reproduces several of the expected chimera properties, like the formation of multiple heads and the ability to control the natural drift that Kuramoto\'s chimera states experience in a ring, and explain how chimera states emerge. Our contribution is defining the model, analyzing the mechanism leading to chimera states, and comparing it with examples from the field of Kuramoto oscillators.},
  doi = {10.1103/PhysRevE.110.054214},
  volume = {110},
  month = {11},
  }

• R. Agyeman and B. Rinner, “Decentralized Text-Based Person Re-Identification in Multi-Camera Networks,” IEEE Access, vol. 12, p. 172125–172148, 2024. doi:10.1109/ACCESS.2024.3501382
  [BibTeX] [Download PDF]

  @article{0f4de0c6943ec64e019440026b2c0017,
  author = {Agyeman, Rockson and Rinner, Bernhard},
  title = {{Decentralized Text-Based Person Re-Identification in Multi-Camera Networks}},
  journal = {IEEE Access},
  year = {2024},
  doi = {10.1109/ACCESS.2024.3501382},
  volume = {12},
  pages = {172125--172148},
  month = {11},
  url = {https://ieeexplore.ieee.org/abstract/document/10756694},
  }

• G. Salvado, L. da Costa, Y. Coutinho, T. Moreira, V. Monteiro, and A. M. Tonello, “Power Supply Access Impedance Boost to Improve PLC Systems Performance,” in The XXV Brazilian Congress of Automation 2024, 2024.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c793cd7a700193cfbef79100fd,
  author = {Salvado, Gustavo and da Costa, Luis and Coutinho, Yan and Moreira, Tulio and Monteiro, Vinicius and Tonello, Andrea M.},
  title = {{Power Supply Access Impedance Boost to Improve PLC Systems Performance}},
  booktitle = {The XXV Brazilian Congress of Automation 2024},
  year = {2024},
  month = {10},
  url = {https://www.sba.org.br/cba2024/papers/paper\_7044.pdf},
  }

• M. Sende, C. Raffelsberger, and C. Bettstetter, “Bridging the reality gap in drone swarm development through mixed reality,” Autonomous Robots, vol. 48, 2024. doi:10.1007/s10514-024-10169-1
  [BibTeX] [Abstract]
  

  Swarm algorithms promise to solve certain problems in large multi-robot systems. The evaluation of large swarms is however challenging as simulations alone often lack some properties of real systems whereas real-world experiments are costly and complex. We present a mixed reality (MR) system that connects simulated and physical robots though a 5G network, facilitating MR experiments to evaluate communication-based swarm algorithms. The effectiveness of the system is demonstrated through extensive experiments with unmanned aerial vehicles. Measurements show that the communication requirements of swarm coordination are well met by 5G but the computing power of the simulation server can be a bottleneck. However, even when the simulation slows down, communication and coordination take place in real time. In conclusion, 5G-enabled MR experiments are a feasible tool for bridging the reality gap in the development and evaluation of robot swarms.

  @article{0f4de0c79245e0d30192481415c10028,
  author = {Sende, Micha and Raffelsberger, Christian and Bettstetter, Christian},
  title = {{Bridging the reality gap in drone swarm development through mixed reality}},
  journal = {Autonomous Robots},
  year = {2024},
  abstract = {Swarm algorithms promise to solve certain problems in large multi-robot systems. The evaluation of large swarms is however challenging as simulations alone often lack some properties of real systems whereas real-world experiments are costly and complex. We present a mixed reality (MR) system that connects simulated and physical robots though a 5G network, facilitating MR experiments to evaluate communication-based swarm algorithms. The effectiveness of the system is demonstrated through extensive experiments with unmanned aerial vehicles. Measurements show that the communication requirements of swarm coordination are well met by 5G but the computing power of the simulation server can be a bottleneck. However, even when the simulation slows down, communication and coordination take place in real time. In conclusion, 5G-enabled MR experiments are a feasible tool for bridging the reality gap in the development and evaluation of robot swarms.},
  doi = {10.1007/s10514-024-10169-1},
  volume = {48},
  month = {9},
  }

• N. Novello and A. M. Tonello, “Label Noise Resistant f-Divergence Receiver for Power Line Communications,” in IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm) 2024, Piscataway (NJ), 2024. doi:10.1109/SmartGridComm60555.2024.10738036
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c793cd7a700193cfa8f5df00a4,
  author = {Novello, Nicola and Tonello, Andrea M.},
  title = {{Label Noise Resistant f-Divergence Receiver for Power Line Communications}},
  booktitle = { IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm) 2024},
  year = {2024},
  doi = {10.1109/SmartGridComm60555.2024.10738036},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10738036},
  }

• A. Kalatiani, M. Strobl, and W. Elmenreich, “Exploring Accessibility Enhancement in Printable Board Games Through 3D Printing with a Heist Board Game Case Study,” in Money | Games | Economies, N. König, N. Denk, A. Pfeiffer, T. Wernbacher, and S. Wimmer, Eds., Krems: University of Krems Press, 2024, p. 211–225. doi:10.48341/pwsk-m637
  [BibTeX] [Abstract] [Download PDF]
  

  In recent years, 3D printing has emerged as a technology that has the potential to transform various industries. It enables the creation of three-dimensional objects by layering materials based on a digital design. This process has gained widespread attention due to its versatility, efficiency, and possibilities for customization and prototyping. One of these areas in which 3D printing can be transformational is the development of Indie board games or so-called printables. A beneficial aspect 3D printing provides is the ability to add accessibility for visually impaired people into board games by designing game elements that provide haptic feedback. As a case study, we designed a heist board game involving a generated game map assembled using 3D-printed elements that snap together so that an accidental moving of one part does not affect the board. The figures and game elements are also designed as 3D prints so that they can be identified by touch as well as by their visual design. The game also involves cards with a cut edge to signal their orientation and a QR code that enables a mobile app to read the card’s content to the player. Producing the game is, however, significantly longer than a standard (2D) printable game since the 3D elements require significant time for printing. The printing time of all elements in full size amounts to 100 hours on a Prusa i3 printer. Thus, the usage of 3D-print technology for producing games is expected to be limited to prototypes or special applications.

  @incollection{0f4de0c4929846a001929abe6b7f0048,
  author = {Kalatiani, Ahmad and Strobl, Magdalena and Elmenreich, Wilfried},
  title = {{Exploring Accessibility Enhancement in Printable Board Games Through 3D Printing with a Heist Board Game Case Study}},
  booktitle = {Money | Games | Economies},
  publisher = {University of Krems Press},
  year = {2024},
  abstract = {In recent years, 3D printing has emerged as a technology that has the potential to transform various industries. It enables the creation of three-dimensional objects by layering materials based on a digital design. This process has gained widespread attention due to its versatility, efficiency, and possibilities for customization and prototyping. One of these areas in which 3D printing can be transformational is the development of Indie board games or so-called printables. A beneficial aspect 3D printing provides is the ability to add accessibility for visually impaired people into board games by designing game elements that provide haptic feedback. As a case study, we designed a heist board game involving a generated game map assembled using 3D-printed elements that snap together so that an accidental moving of one part does not affect the board. The figures and game elements are also designed as 3D prints so that they can be identified by touch as well as by their visual design. The game also involves cards with a cut edge to signal their orientation and a QR code that enables a mobile app to read the card’s content to the player. Producing the game is, however, significantly longer than a standard (2D) printable game since the 3D elements require significant time for printing. The printing time of all elements in full size amounts to 100 hours on a Prusa i3 printer. Thus, the usage of 3D-print technology for producing games is expected to be limited to prototypes or special applications.},
  doi = {10.48341/pwsk-m637},
  editor = {Nikolaus König and Natalie Denk and Alexander Pfeiffer and Thomas Wernbacher and Simon Wimmer},
  pages = {211--225},
  address = {Krems},
  month = {9},
  isbn = {9783903470149},
  url = {https://door.donau-uni.ac.at/detail/o:4935},
  }

• L. S. Santner and W. Elmenreich, “Money Systems in Text Adventures and their Design Challenges,” in Money | Games | Economies, N. König, N. Denk, A. Pfeiffer, T. Wernbacher, and S. Wimmer, Eds., Krems: University of Krems Press, 2024, p. 55–70. doi:10.48341/pwsk-m637
  [BibTeX] [Abstract] [Download PDF]
  

  Text adventure games, also known as interactive novel computer games, allow players to engage with the game world by typing commands. These games often feature intricate puzzles that necessitate correct actions and the combination of specific objects to progress. Although the concept of money is infrequently encountered within these games, there are instances where a single coin becomes instrumental in operating machinery or serves as part of a puzzle. Incorporating a monetary system into text adventures presents a formidable challenge to the genre. The introduction of money can disrupt puzzle complexity, enabling players to bypass cumbersome acquisition tasks by simply purchasing necessary objects. Despite these hurdles, some text adventures have implemented functional money systems. Notable examples include Zorkmids in Zork, Buckazoids in Planetfall and Echoes, as well as Pennies, Shillings, and Echoes in Fallen London. This paper addresses the intricate design and implementation challenges associated with introducing money systems into text adventure games. This leads to discussions about its impact on narrative choices, such as deciding between donating or retaining money, and how these decisions influence the overall storyline, as well as to technical questions regarding the implementation of the concept using a typical programming language for interactive fiction, such as Inform. As a case study, the implementation process of a money system using the Inform 6 programming language and the PunyInfom Library is presented.

  @incollection{0f4de0c4929846a001929ac9895a006d,
  author = {Santner, Lea Stella and Elmenreich, Wilfried},
  title = {{Money Systems in Text Adventures and their Design Challenges}},
  booktitle = {Money | Games | Economies},
  publisher = {University of Krems Press},
  year = {2024},
  abstract = {Text adventure games, also known as interactive novel computer games, allow players to engage with the game world by typing commands. These games often feature intricate puzzles that necessitate correct actions and the combination of specific objects to progress. Although the concept of money is infrequently encountered within these games, there are instances where a single coin becomes instrumental in operating machinery or serves as part of a puzzle. Incorporating a monetary system into text adventures presents a formidable challenge to the genre. The introduction of money can disrupt puzzle complexity, enabling players to bypass cumbersome acquisition tasks by simply purchasing necessary objects. Despite these hurdles, some text adventures have implemented functional money systems. Notable examples include Zorkmids in Zork, Buckazoids in Planetfall and Echoes, as well as Pennies, Shillings, and Echoes in Fallen London. This paper addresses the intricate design and implementation challenges associated with introducing money systems into text adventure games. This leads to discussions about its impact on narrative choices, such as deciding between donating or retaining money, and how these decisions influence the overall storyline, as well as to technical questions regarding the implementation of the concept using a typical programming language for interactive fiction, such as Inform. As a case study, the implementation process of a money system using the Inform 6 programming language and the PunyInfom Library is presented.},
  doi = {10.48341/pwsk-m637 },
  editor = {Nikolaus König and Natalie Denk and Alexander Pfeiffer and Thomas Wernbacher and Simon Wimmer},
  pages = {55--70},
  address = {Krems},
  month = {9},
  isbn = {9783903470149},
  url = {https://door.donau-uni.ac.at/detail/o:4935 },
  }

• F. Ebong Ebong, N. Novello, and A. M. Tonello, “Human Detection Based on Learning and Classification of Radio Scattering Parameters and Para-Hermitian Eigenvalue Decomposition,” in 2024 IEEE 35th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Piscataway (NJ), 2024. doi:10.1109/PIMRC59610.2024.10817311
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c793cd7a700193cfc9eb7b0147,
  author = {Ebong Ebong, Frank and Novello, Nicola and Tonello, Andrea M.},
  title = {{Human Detection Based on Learning and Classification of Radio Scattering Parameters and Para-Hermitian Eigenvalue Decomposition}},
  booktitle = {2024 IEEE 35th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)},
  year = {2024},
  doi = {10.1109/PIMRC59610.2024.10817311},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/abstract/document/10817311},
  }

• B. Salamat, D. Bencic, G. Elsbacher, C. Seidel, and A. M. Tonello, Investigating Integral Reinforcement Learning to Achieve Asymptotic Stability in Underactuated Mechanical Systems, 2024.
  [BibTeX] [Abstract] [Download PDF]
  

  This article introduces an innovative data-driven integral reinforcement learning (IRL) algorithm for the control of a class of underactuated mechanical systems. We propose a novel value function that allows to shape and learn the potential energy of an underactuated system and to drive it to a desired closed-loop potential energy. Consequently, we derive an actor-control policy that ensures asymptotic stability. In addition, we propose to parameterize the value function with three representative neural network architectures. Eventually, we assess the performance of the proposed IRL through simulations and experimental results, thus confirming the practical effectiveness of the control design approach.

  @misc{0f4de0c793cd7a700193cfb0a69d00d9,
  abstract = {This article introduces an innovative data-driven integral reinforcement learning (IRL) algorithm for the control of a class of underactuated mechanical systems. We propose a novel value function that allows to shape and learn the potential energy of an underactuated system and to drive it to a desired closed-loop potential energy. Consequently, we derive an actor-control policy that ensures asymptotic stability. In addition, we propose to parameterize the value function with three representative neural network architectures. Eventually, we assess the performance of the proposed IRL through simulations and experimental results, thus confirming the practical effectiveness of the control design approach.},
  author = {Salamat, Babak and Bencic, Daniel and Elsbacher, Gerhard and Seidel, Christian and Tonello, Andrea M.},
  title = {Investigating Integral Reinforcement Learning to Achieve Asymptotic Stability in Underactuated Mechanical Systems},
  howpublished = {Online},
  month = {8},
  year = {2024},
  url = {https://ras.papercept.net/conferences/conferences/CASE24/program/CASE24\_ContentListWeb\_3.html},
  }

• F. Ebong Ebong and A. M. Tonello, “Extraction of the Natural Poles of the Radio Scattered Field from a Multi-Port Channel Matrix,” in European Conference on Signal Processing (EUSIPCO) 2024, 2024. doi:10.23919/EUSIPCO63174.2024.10715059
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c49288d33f01928b154e9b01e5,
  author = {Ebong Ebong, Frank and Tonello, Andrea M.},
  title = {{Extraction of the Natural Poles of the Radio Scattered Field from a Multi-Port Channel Matrix}},
  booktitle = {European Conference on Signal Processing (EUSIPCO) 2024},
  year = {2024},
  doi = {10.23919/EUSIPCO63174.2024.10715059},
  month = {8},
  url = {https://ieeexplore.ieee.org/document/10715059},
  }

• K. Lite and B. Rinner, “Navigation for Autonomous Robots with Adaptive Information-Seeking,” in IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW), Piscataway (NJ), 2024, p. 159–163. doi:10.1109/ICASSPW62465.2024.10626243
  [BibTeX]

  @inproceedings{0f4de0c79172bc16019173e783ef007a,
  author = {Lite, Kyriakos and Rinner, Bernhard},
  title = {{Navigation for Autonomous Robots with Adaptive Information-Seeking}},
  booktitle = {IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW)},
  year = {2024},
  doi = {10.1109/ICASSPW62465.2024.10626243},
  pages = {159--163},
  address = {Piscataway (NJ)},
  month = {8},
  publisher = {IEEE},
  }

• N. Novello and A. M. Tonello, “Recurrent DQN for Radio Fingerprinting with Constrained Measurements Collection,” ICT Express, 2024. doi:10.1016/j.icte.2024.08.001
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we address the problem of fingerprinting-based radio localization with a particular focus on the measurements collection part. We consider the crucial circumstance where the operator that builds the fingerprinting map by collecting measurements can only travel a limited distance. We propose an iterative formulation that increases the accuracy of the position prediction task by using a recurrent deep reinforcement learning algorithm. Numerical results on a real dataset show the effectiveness of the proposed method, and the comparison with other measurement collection strategies corroborates its value.

  @article{0f4de0c59481b9b701948324f518004e,
  author = {Novello, Nicola and Tonello, Andrea M.},
  title = {{Recurrent DQN for Radio Fingerprinting with Constrained Measurements Collection}},
  journal = {ICT Express},
  year = {2024},
  abstract = {In this paper, we address the problem of fingerprinting-based radio localization with a particular focus on the measurements collection part. We consider the crucial circumstance where the operator that builds the fingerprinting map by collecting measurements can only travel a limited distance. We propose an iterative formulation that increases the accuracy of the position prediction task by using a recurrent deep reinforcement learning algorithm. Numerical results on a real dataset show the effectiveness of the proposed method, and the comparison with other measurement collection strategies corroborates its value.},
  doi = {10.1016/j.icte.2024.08.001},
  month = {8},
  url = {https://www.sciencedirect.com/science/article/pii/S2405959524000882},
  }

• B. Salamat, S. Olzem, G. Elsbacher, and A. M. Tonello, “Global Multi-Phase Path Planning Through High-Level Reinforcement Learning,” IEEE Open Journal of Control Systems, vol. 3, p. 405–415, 2024. doi:10.1109/OJCSYS.2024.3435080
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we introduce the Global Multi-Phase Path Planning ( GMP3 ) algorithm in planner problems, which computes fast and feasible trajectories in environments with obstacles, considering physical and kinematic constraints. Our approach utilizes a Markov Decision Process (MDP) framework and high-level reinforcement learning techniques to ensure trajectory smoothness, continuity, and compliance with constraints. Through extensive simulations, we demonstrate the algorithm's effectiveness and efficiency across various scenarios. We highlight existing path planning challenges, particularly in integrating dynamic adaptability and computational efficiency. The results validate our method's convergence guarantees using Lyapunov’s stability theorem and underscore its computational advantages.

  @article{0f4de0c49288d33f01928aee0bf80102,
  author = {Salamat, Babak and Olzem, Sebastian-Sven and Elsbacher, Gerhard and Tonello, Andrea M.},
  title = {{Global Multi-Phase Path Planning Through High-Level Reinforcement Learning}},
  journal = {IEEE Open Journal of Control Systems},
  year = {2024},
  abstract = {In this paper, we introduce the Global Multi-Phase Path Planning ( GMP3 ) algorithm in planner problems, which computes fast and feasible trajectories in environments with obstacles, considering physical and kinematic constraints. Our approach utilizes a Markov Decision Process (MDP) framework and high-level reinforcement learning techniques to ensure trajectory smoothness, continuity, and compliance with constraints. Through extensive simulations, we demonstrate the algorithm\'s effectiveness and efficiency across various scenarios. We highlight existing path planning challenges, particularly in integrating dynamic adaptability and computational efficiency. The results validate our method\'s convergence guarantees using Lyapunov’s stability theorem and underscore its computational advantages.},
  doi = {10.1109/OJCSYS.2024.3435080},
  volume = {3},
  pages = {405--415},
  month = {7},
  url = {https://ieeexplore.ieee.org/document/10613437/keywords\#keywords},
  }

• N. Novello and A. M. Tonello, “\$f\$-Divergence Based Classification: Beyond the Use of Cross-Entropy,” in International Conference on Machine Learning (ICML), 2024.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c49288d33f01928b0e767b01c9,
  author = {Novello, Nicola and Tonello, Andrea M.},
  title = {{\$f\$-Divergence Based Classification: Beyond the Use of Cross-Entropy}},
  booktitle = {International Conference on Machine Learning (ICML)},
  year = {2024},
  month = {7},
  url = {https://proceedings.mlr.press/v235/novello24a.html},
  }

• U. Schilcher, S. Toumpis, S. Borkotoky, J. F. Schmidt, and C. Bettstetter, “Calculating the Traffic Density in LPWANs with Finite Retransmissions,” in Proc. IEEE Vehicular Technology Conference (VTC-Spring) 2024, Piscataway (NJ), 2024. doi:10.1109/VTC2024-Spring62846.2024.10683081
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c492acdfe20192ae3422d70070,
  author = {Schilcher, Udo and Toumpis, Stavros and Borkotoky, Siddhartha and Schmidt, Jorge Friedrich and Bettstetter, Christian},
  title = {{Calculating the Traffic Density in LPWANs with Finite Retransmissions}},
  booktitle = {Proc. IEEE Vehicular Technology Conference (VTC-Spring) 2024},
  year = {2024},
  doi = {10.1109/VTC2024-Spring62846.2024.10683081},
  address = {Piscataway (NJ)},
  month = {6},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10683081},
  }

• D. Liang, H. Liu, Y. Wang, K. Zhang, Z. Wang, M. Luo, T. Zheng, C. Chi, and A. M. Tonello, “Detection and identification of cable aging using power line communication technology,” IEEE Transactions on Dielectrics and Electrical Insulation, 2024. doi:10.1109/TDEI.2024.3417419
  [BibTeX] [Abstract] [Download PDF]
  

  Non-destructive inspection methods that use broadband reflecting signals to identify microscopic flaws and aging characteristics in power cables are often employed, however they suffer from limited detection distances and a single detection target. This study proposes a scheme for harnessing power line communication (PLC) devices to accomplish the detection and identification of multiple cable aging. A model of the propagation of a high-frequency carrier signal through a cable is first combined with mathematical models of various types of aging, such as water-tree aging, electric-tree aging, and thermal aging, to simulate the network channel state in the process of different insulation degradation of the cable. The channel frequency domain response (CFR) at the receiver can then reflect the incidence of cable aging, and the proposed approach, in conjunction with machine learning algorithms, can recognize different types and severity of aging under interference. Computer simulations and field experiments were conducted to validate the viability of the suggested approach, and the results shown that 98\% correctness could be attained in on-line monitoring despite interference considerations. In theory, the range is doubled when compared to the reflected signal approach with the same bandwidth and power.

  @article{0f4de0c49288d33f01928af7f5a1013d,
  author = {Liang, Dong and Liu, Hu and Wang, Yanting and Zhang, Kaiwen and Wang, Zilun and Luo, Meijuan and Zheng, Tao and Chi, Chen and Tonello, Andrea M.},
  title = {{Detection and identification of cable aging using power line communication technology}},
  journal = {IEEE Transactions on Dielectrics and Electrical Insulation},
  year = {2024},
  abstract = {Non-destructive inspection methods that use broadband reflecting signals to identify microscopic flaws and aging characteristics in power cables are often employed, however they suffer from limited detection distances and a single detection target. This study proposes a scheme for harnessing power line communication (PLC) devices to accomplish the detection and identification of multiple cable aging. A model of the propagation of a high-frequency carrier signal through a cable is first combined with mathematical models of various types of aging, such as water-tree aging, electric-tree aging, and thermal aging, to simulate the network channel state in the process of different insulation degradation of the cable. The channel frequency domain response (CFR) at the receiver can then reflect the incidence of cable aging, and the proposed approach, in conjunction with machine learning algorithms, can recognize different types and severity of aging under interference. Computer simulations and field experiments were conducted to validate the viability of the suggested approach, and the results shown that 98\% correctness could be attained in on-line monitoring despite interference considerations. In theory, the range is doubled when compared to the reflected signal approach with the same bandwidth and power.},
  doi = {10.1109/TDEI.2024.3417419},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/10568213/authors\#authors},
  }

• K. A. Youssefi Darmian, H. Lindner, and W. Elmenreich, “RoboTunes: A Multi-Player Learning Framework with Musical Programmable Robots,” in 2024 10th International Conference on Automation, Robotics and Applications (ICARA), Piscataway (NJ), 2024, p. 334–338. doi:10.1109/ICARA60736.2024.10553175
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4902e4be701902f4ef16b0007,
  author = {Youssefi Darmian, Khalil Alrahman and Lindner, Helmut and Elmenreich, Wilfried},
  title = {{RoboTunes: A Multi-Player Learning Framework with Musical Programmable Robots}},
  booktitle = {2024 10th International Conference on Automation, Robotics and Applications (ICARA)},
  year = {2024},
  doi = {10.1109/ICARA60736.2024.10553175},
  pages = {334--338},
  address = {Piscataway (NJ)},
  month = {6},
  publisher = {IEEE},
  url = {https://mobile.aau.at/publications/youssefi-2024-icara-robotunes.pdf},
  }

• M. Bovo, R. Agyeman, M. Arif, and B. Rinner, “Evaluation of Occupancy Detection with Distributed Environmental Sensors for IoT Applications,” in International Conference on Distributed Computing in Smart Systems and the Internet of Things (DCOSS-IoT), Piscataway (NJ), 2024, p. 416–423. doi:10.1109/DCOSS-IoT61029.2024.00068
  [BibTeX]

  @inproceedings{0f4de0c79172bc16019173d584a7003d,
  author = {Bovo, Matteo and Agyeman, Rockson and Arif, Muhammad and Rinner, Bernhard},
  title = {{Evaluation of Occupancy Detection with Distributed Environmental Sensors for IoT Applications}},
  booktitle = {International Conference on Distributed Computing in Smart Systems and the Internet of Things (DCOSS-IoT)},
  year = {2024},
  doi = {10.1109/DCOSS-IoT61029.2024.00068},
  pages = {416--423},
  address = {Piscataway (NJ)},
  month = {4},
  publisher = {IEEE},
  }

• R. Agyeman and B. Rinner, “Resource-efficient Text-based Person Re-identification on Embedded Devices,” in International Conference on Distributed Computing in Smart Systems and the Internet of Things (DCOSS-IoT), Piscataway (NJ), 2024, p. 84–92. doi:10.1109/DCOSS-IoT61029.2024.00022
  [BibTeX]

  @inproceedings{0f4de0c79172bc16019173c26f1f0009,
  author = {Agyeman, Rockson and Rinner, Bernhard},
  title = {{Resource-efficient Text-based Person Re-identification on Embedded Devices}},
  booktitle = {International Conference on Distributed Computing in Smart Systems and the Internet of Things (DCOSS-IoT)},
  year = {2024},
  doi = {10.1109/DCOSS-IoT61029.2024.00022},
  pages = {84--92},
  address = {Piscataway (NJ)},
  month = {4},
  publisher = {IEEE},
  }

• U. Schilcher and S. Toumpis, “On Outage Probabilities With Correlated Locations, Channel, and Traffic in Wireless Networks,” IEEE Wireless Communications Letters, vol. 28, iss. 6, p. 1293–1297, 2024.
  [BibTeX] [Abstract] [Download PDF]
  

  In this letter we derive novel expressions for the joint outage probability at two time slots in a wireless network under correlated interferer locations, channel gains, and traffic. The result is given as a function of the lag between the two slots, the channel coherence time, and the traffic burst length. Furthermore, we analyze the success probability of a transmission following a single outage, an important metric when, e.g., analyzing retransmission or cooperative relaying protocols.

  @article{0f4de0c790148ba2019015c82028001c,
  author = {Schilcher, Udo and Toumpis, Stavros},
  title = {{On Outage Probabilities With Correlated Locations, Channel, and Traffic in Wireless Networks}},
  journal = {IEEE Wireless Communications Letters},
  year = {2024},
  abstract = {In this letter we derive novel expressions for the joint outage probability at two time slots in a wireless network under correlated interferer locations, channel gains, and traffic. The result is given as a function of the lag between the two slots, the channel coherence time, and the traffic burst length. Furthermore, we analyze the success probability of a transmission following a single outage, an important metric when, e.g., analyzing retransmission or cooperative relaying protocols.},
  volume = {28},
  number = {6},
  pages = {1293--1297},
  month = {3},
  url = {https://ieeexplore.ieee.org/document/10478601},
  }

• Y. Coutinho, A. Camponogara, M. de Filomeno, M. de Campos, A. M. Tonello, and M. Ribeiro, “Two Decades of Research Progress in Resource Allocation for PLC Systems: From Core Concepts to Frontiers,” IEEE Communications Surveys and Tutorials, vol. 26, iss. 3, p. 1710–1747, 2024. doi:10.1109/COMST.2024.3380901
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we review the current state-of-the-art of resource allocation for power line communication systems. The study systematically presents the advancements achieved in this field over the past decades. To achieve this, we adopt two complementary perspectives: a power line communication-centric view and an optimization-centric view. The former highlights resource allocation within the eye of the power line communication community, while the latter emphasizes optimization principles, focusing on the technical aspects of resource allocation. Subsequently, we meticulously present the progress made in both single- and multi-user scenarios, employing a chronological approach to provide readers with a coherent narrative of the evolution and important findings. Furthermore, we accentuate critical insights and valuable lessons gathered from these developments. In conclusion, we explore future trends and prospects within the scope of resource allocation for power line communication systems, intending to inspire research initiatives that push the boundaries beyond the existing state-of-the-art.

  @article{0f4de0c49288d33f01928ad6ce110084,
  author = {Coutinho, Yan and Camponogara, Andrei and de Filomeno, Mateus and de Campos, Marcello and Tonello, Andrea M. and Ribeiro, Moises},
  title = {{Two Decades of Research Progress in Resource Allocation for PLC Systems: From Core Concepts to Frontiers}},
  journal = {IEEE Communications Surveys and Tutorials},
  year = {2024},
  abstract = {In this paper, we review the current state-of-the-art of resource allocation for power line communication systems. The study systematically presents the advancements achieved in this field over the past decades. To achieve this, we adopt two complementary perspectives: a power line communication-centric view and an optimization-centric view. The former highlights resource allocation within the eye of the power line communication community, while the latter emphasizes optimization principles, focusing on the technical aspects of resource allocation. Subsequently, we meticulously present the progress made in both single- and multi-user scenarios, employing a chronological approach to provide readers with a coherent narrative of the evolution and important findings. Furthermore, we accentuate critical insights and valuable lessons gathered from these developments. In conclusion, we explore future trends and prospects within the scope of resource allocation for power line communication systems, intending to inspire research initiatives that push the boundaries beyond the existing state-of-the-art.},
  doi = {10.1109/COMST.2024.3380901},
  volume = {26},
  number = {3},
  pages = {1710--1747},
  month = {3},
  url = {https://ieeexplore.ieee.org/document/10479177},
  }

• R. Agyeman and B. Rinner, “Real-Time Multi-Human Parsing on Embedded Devices,” in ICASSP 2024 Proceedings of the 2024 IEEE International Conference on Acoustics, Speech and Signal Processing, Piscataway (NJ), 2024, p. 5145–5149. doi:10.1109/ICASSP48485.2024.10447796
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c58f98f2e3018f9a18ccbc0025,
  author = {Agyeman, Rockson and Rinner, Bernhard},
  title = {{Real-Time Multi-Human Parsing on Embedded Devices}},
  booktitle = {ICASSP 2024 Proceedings of the 2024 IEEE International Conference on Acoustics, Speech and Signal Processing },
  year = {2024},
  doi = {10.1109/ICASSP48485.2024.10447796},
  pages = {5145--5149},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10447796},
  }

• P. Valet, D. Schwingshackl, U. Gaier, D. Giotta, and A. M. Tonello, “Inverse Modelling Techniques as Dynamic Digital Pre-Distortion for Broadband Systems for CS-DACs Based on Volterra Series Expansion,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 71, iss. 4, p. 1506–1519, 2024. doi:10.1109/TCSI.2024.3360520
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a dynamic digital pre-distortion (DPD) method for a current-steering digital-to-analog converter (CS-DAC). The novel proposed method is based on the inverse modelling of the system with a Volterra series expansion. It uses a memory structure often only used for DPD in power amplifiers (PA). The goal is to find a model to counteract the signal dependent non-linearities of charge injection from the switching activity of the converter with a limited parameter count. A priori knowledge of the non-linear behavior and architecture of the DAC is exploited. The proposed Volterra system consists of a first and third order kernel with a respective memory depth of one. This results in a total number of only 6 parameters that need to be estimated. This is sufficient to significantly attenuate the non-linear distortions and efficient in terms of memory usage and computational complexity. The paper compares three different methods for generating the inverse of the Volterra system and determines the performance difference between them. The evaluation of the proposed DPD is done via Spice simulations of a 14-bit CS-DAC using a lumped circuit model and Spectre simulations of a real 14-bit 16 nm DAC design. Narrow-band and broad-band discrete multi-tone (DMT) signals with a frequency of up to 684 MHz are considered. The results show a performance gain of the missing-tone-power-ratio (MTPR) of up to 8.4 dB for both model-based and circuit-based simulations based analysis, respectively.

  @article{0f4de0c7900473480190068140c40002,
  author = {Valet, Patrick and Schwingshackl, David and Gaier, Ulrich and Giotta, Dario and Tonello, Andrea M.},
  title = {{Inverse Modelling Techniques as Dynamic Digital Pre-Distortion for Broadband Systems for CS-DACs Based on Volterra Series Expansion}},
  journal = {IEEE Transactions on Circuits and Systems I: Regular Papers },
  year = {2024},
  abstract = {This paper presents a dynamic digital pre-distortion (DPD) method for a current-steering digital-to-analog converter (CS-DAC). The novel proposed method is based on the inverse modelling of the system with a Volterra series expansion. It uses a memory structure often only used for DPD in power amplifiers (PA). The goal is to find a model to counteract the signal dependent non-linearities of charge injection from the switching activity of the converter with a limited parameter count. A priori knowledge of the non-linear behavior and architecture of the DAC is exploited. The proposed Volterra system consists of a first and third order kernel with a respective memory depth of one. This results in a total number of only 6 parameters that need to be estimated. This is sufficient to significantly attenuate the non-linear distortions and efficient in terms of memory usage and computational complexity. The paper compares three different methods for generating the inverse of the Volterra system and determines the performance difference between them. The evaluation of the proposed DPD is done via Spice simulations of a 14-bit CS-DAC using a lumped circuit model and Spectre simulations of a real 14-bit 16 nm DAC design. Narrow-band and broad-band discrete multi-tone (DMT) signals with a frequency of up to 684 MHz are considered. The results show a performance gain of the missing-tone-power-ratio (MTPR) of up to 8.4 dB for both model-based and circuit-based simulations based analysis, respectively.},
  doi = {10.1109/TCSI.2024.3360520},
  volume = {71},
  number = {4},
  pages = {1506--1519},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/10433893},
  }

• J. A. Maya, L. Rey Vega, and A. M. Tonello, “An Exponentially-Tight Approximate Factorization of the Joint PDF of Statistical Dependent Measurements in Wireless Sensor Networks,” IEEE Open Journal of the Communications Society, vol. 5, p. 221–237, 2024. doi:10.1109/OJCOMS.2023.3332259
  [BibTeX] [Abstract]
  

  We consider the distributed detection problem of a temporally correlated random radio source signal using a wireless sensor network capable of measuring the energy of the received signals. It is well-known that optimal tests in the Neyman-Pearson setting are based on likelihood ratio tests (LRT), which, in this set-up, evaluate the quotient between the probability density functions (PDF) of the measurements when the source signal is present and absent. When the source is present, the computation of the joint PDF of the energy measurements at the nodes is a challenging problem. This is due to the statistical dependence introduced to the received signals by the propagation through fading channels of the radio signal emitted by the source. We deal with this problem using the characteristic function of the (intractable) joint PDF, and proposing an approximation to it. We derive bounds for the approximation error in two wireless propagation scenarios, slow and fast fading, and show that the proposed approximation is exponentially tight with the number of nodes when the time-bandwidth product is sufficiently high. The approximation is used as a substitute of the exact joint PDF for building an approximate LRT, which performs better than other well-known detectors, as verified by Monte Carlo simulations.

  @article{0f4de0c48bd0fe7a018bd23014c50000,
  author = {Maya, Juan Augusto and Rey Vega, Leonardo and Tonello, Andrea M.},
  title = {{An Exponentially-Tight Approximate Factorization of the Joint PDF of Statistical Dependent Measurements in Wireless Sensor Networks}},
  journal = {IEEE Open Journal of the Communications Society},
  year = {2024},
  abstract = {We consider the distributed detection problem of a temporally correlated random radio source signal using a wireless sensor network capable of measuring the energy of the received signals. It is well-known that optimal tests in the Neyman-Pearson setting are based on likelihood ratio tests (LRT), which, in this set-up, evaluate the quotient between the probability density functions (PDF) of the measurements when the source signal is present and absent. When the source is present, the computation of the joint PDF of the energy measurements at the nodes is a challenging problem. This is due to the statistical dependence introduced to the received signals by the propagation through fading channels of the radio signal emitted by the source. We deal with this problem using the characteristic function of the (intractable) joint PDF, and proposing an approximation to it. We derive bounds for the approximation error in two wireless propagation scenarios, slow and fast fading, and show that the proposed approximation is exponentially tight with the number of nodes when the time-bandwidth product is sufficiently high. The approximation is used as a substitute of the exact joint PDF for building an approximate LRT, which performs better than other well-known detectors, as verified by Monte Carlo simulations.},
  doi = {10.1109/OJCOMS.2023.3332259},
  volume = {5},
  pages = {221--237},
  }

• V. Korzhun and A. M. Tonello, “Cooperative Bit Allocation in In-Band Full-Duplex Power Line Communication,” IEEE Open Journal of the Communications Society, vol. 5, p. 5306–5322, 2024. doi:10.1109/OJCOMS.2024.3449701
  [BibTeX] [Abstract]
  

  In-band full-duplex (IBFD) is an attractive technology in broadband power line communication (BB-PLC) because it helps to improve spectral efficiency. However, IBFD is challenging since it requires additional hardware and advanced signal processing to mitigate self-interference (SI) signals. SI cancelation architectures and channel estimation techniques determine the overall IBFD performance. Accurate SI channel estimation is required since imperfect SI cancelation reduces signal-to-interference-plus-noise ratio (SINR), causing an increase in data errors and a decrease in data rates. Although channel estimation can be improved by sending additional training symbols, increasing the training duration will lower data throughput. Thus, the training symbol number is an essential trade-off for IBFD performance in BB-PLC. In this paper, we investigate IBFD performance in single-input single-output (SISO), single-input multiple-output (SIMO), and multiple-input multiple-output (MIMO) communication scenarios, including the influence of the training period. By analyzing error vectors on a constellation diagram, we obtain the closed-form expressions for the symbol error probability (SEP) affected by IBFD and the training duration. Based on the obtained expressions, we propose a bit allocation algorithm to determine bit loading to ensure reliable IBFD communication. Furthermore, we suggest a procedure to compute the optimal training symbol number that maximizes throughput in IBFD. Using the proposed bit allocation strategy and a database of measured channels, we estimated the achievable bidirectional throughput and the throughput gain in IBFD compared to time division duplexing (TDD).

  @article{0f4de0c49288d33f01928aeac2c000ea,
  author = {Korzhun, Vitali and Tonello, Andrea M.},
  title = {{Cooperative Bit Allocation in In-Band Full-Duplex Power Line Communication}},
  journal = {IEEE Open Journal of the Communications Society},
  year = {2024},
  abstract = {In-band full-duplex (IBFD) is an attractive technology in broadband power line communication (BB-PLC) because it helps to improve spectral efficiency. However, IBFD is challenging since it requires additional hardware and advanced signal processing to mitigate self-interference (SI) signals. SI cancelation architectures and channel estimation techniques determine the overall IBFD performance. Accurate SI channel estimation is required since imperfect SI cancelation reduces signal-to-interference-plus-noise ratio (SINR), causing an increase in data errors and a decrease in data rates. Although channel estimation can be improved by sending additional training symbols, increasing the training duration will lower data throughput. Thus, the training symbol number is an essential trade-off for IBFD performance in BB-PLC. In this paper, we investigate IBFD performance in single-input single-output (SISO), single-input multiple-output (SIMO), and multiple-input multiple-output (MIMO) communication scenarios, including the influence of the training period. By analyzing error vectors on a constellation diagram, we obtain the closed-form expressions for the symbol error probability (SEP) affected by IBFD and the training duration. Based on the obtained expressions, we propose a bit allocation algorithm to determine bit loading to ensure reliable IBFD communication. Furthermore, we suggest a procedure to compute the optimal training symbol number that maximizes throughput in IBFD. Using the proposed bit allocation strategy and a database of measured channels, we estimated the achievable bidirectional throughput and the throughput gain in IBFD compared to time division duplexing (TDD).},
  doi = {10.1109/OJCOMS.2024.3449701},
  volume = {5},
  pages = {5306--5322},
  }

2023

• K. Wogatai, J. Winkler, and W. Elmenreich, “A Graph-Based Approach for Applying Biologically-Inspired Slime Mold Algorithms for Repairing a Power Transmission Network after an Electromagnetic Pulse Attack,” in 2023 2nd International Conference on Power Systems and Electrical Technology (PSET), Piscataway (NJ), 2023, p. 1–10. doi:10.1109/PSET59452.2023.10346595
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c78a87303b018a8914871d0036,
  author = {Wogatai, Kristina and Winkler, Johannes and Elmenreich, Wilfried},
  title = {{A Graph-Based Approach for Applying Biologically-Inspired Slime Mold Algorithms for Repairing a Power Transmission Network after an Electromagnetic Pulse Attack}},
  booktitle = {2023 2nd International Conference on Power Systems and Electrical Technology (PSET)},
  year = {2023},
  doi = {10.1109/PSET59452.2023.10346595},
  pages = {1--10},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://mobile.aau.at/publications/wogatai-2023-A\_Graph\_Based\_Approach\_for\_Applying\_Biologically\_Inspired\_Slime\_Mold\_Algorithms.pdf},
  }

• J. Winkler, H. Bousbiat, S. Jost, and W. Elmenreich, “Energy Dissagregation on a Raspberry Pi with YoMoPie-Extension,” in 2023 2nd International Conference on Power Systems and Electrical Technology (PSET), Piscataway (NJ), 2023. doi:10.1109/PSET59452.2023.10346408
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c68b40953e018b42632e7000c3,
  author = {Winkler, Johannes and Bousbiat, Hafsa and Jost, Stefan and Elmenreich, Wilfried},
  title = {{Energy Dissagregation on a Raspberry Pi with YoMoPie-Extension}},
  booktitle = {2023 2nd International Conference on Power Systems and Electrical Technology (PSET)},
  year = {2023},
  doi = {10.1109/PSET59452.2023.10346408},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://mobile.aau.at/publications/winkler-2023-Energy\_Disaggregation\_with\_NILM\_on\_a\_Raspberry\_Pi\_with\_Smart-Metering\_Extension.pdf},
  }

• K. Wogatai, “Exploring the Potential of Self-Organizing Applications in Energy Networks,” in IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS), Piscataway (NJ), 2023. doi:10.1109/ACSOS-C58168.2023.00023
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c78b364805018b3891ec660017,
  author = {Wogatai, Kristina},
  title = {{Exploring the Potential of Self-Organizing Applications in Energy Networks}},
  booktitle = {IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS)},
  year = {2023},
  doi = {10.1109/ACSOS-C58168.2023.00023},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10336241},
  }

• J. A. Maya, L. Rey Vega, and A. M. Tonello, “An Asymptotically Equivalent GLRT Test for Distributed Detection in Wireless Sensor Networks,” IEEE Transactions on Signal and Information Processing over Networks, 2023. doi:10.1109/TSIPN.2023.3341407
  [BibTeX] [Abstract] [Download PDF]
  

  In this article, we tackle the problem of distributed detection of a radio source emitting a signal. We consider that geographically distributed sensor nodes obtain energy measurements and compute cooperatively a statistic to decide if the source is present or absent. We model the radio source as a stochastic signal and work with spatially statistically dependent measurements. We consider the Generalized Likelihood Ratio Test (GLRT) approach to deal with an unknown multidimensional parameter from the model. We analytically characterize the asymptotic distribution of the statistic when the amount of sensor measurements tends to infinity. Moreover, as the GLRT is not amenable for distributed settings because of the spatial statistical dependence of the measurements, we study a GLRT-like test where the statistical dependence is completely discarded for building this test. Nevertheless, its asymptotic performance is proved to be identical to the original GLRT, showing that the statistical dependence of the measurements has no impact on the detection performance in the asymptotic scenario. Furthermore, the GLRT-like algorithm has a low computational complexity and demands low communication resources, as compared to the GLRT.

  @article{0f4de0c48c51bce4018c547de0de0007,
  author = {Maya, Juan Augusto and Rey Vega, Leonardo and Tonello, Andrea M.},
  title = {{An Asymptotically Equivalent GLRT Test for Distributed Detection in Wireless Sensor Networks}},
  journal = {IEEE Transactions on Signal and Information Processing over Networks},
  year = {2023},
  abstract = {In this article, we tackle the problem of distributed detection of a radio source emitting a signal. We consider that geographically distributed sensor nodes obtain energy measurements and compute cooperatively a statistic to decide if the source is present or absent. We model the radio source as a stochastic signal and work with spatially statistically dependent measurements. We consider the Generalized Likelihood Ratio Test (GLRT) approach to deal with an unknown multidimensional parameter from the model. We analytically characterize the asymptotic distribution of the statistic when the amount of sensor measurements tends to infinity. Moreover, as the GLRT is not amenable for distributed settings because of the spatial statistical dependence of the measurements, we study a GLRT-like test where the statistical dependence is completely discarded for building this test. Nevertheless, its asymptotic performance is proved to be identical to the original GLRT, showing that the statistical dependence of the measurements has no impact on the detection performance in the asymptotic scenario. Furthermore, the GLRT-like algorithm has a low computational complexity and demands low communication resources, as compared to the GLRT.},
  doi = {10.1109/TSIPN.2023.3341407},
  month = {12},
  url = {https://ieeexplore.ieee.org/document/10354397},
  }

• F. Posch, A. Fakhreddine, E. Caballero Garces, and C. Bettstetter, “A Classifier for Aerial Devices in 5G Networks,” in Proc. IEEE 2023 GLOBECOM Workshop on Cellular UAV and Satellite Communications, 2023.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c48d1a95bc018d1e051fe102fc,
  author = {Posch, Florian and Fakhreddine, Aymen and Caballero Garces, Enrique and Bettstetter, Christian},
  title = {{A Classifier for Aerial Devices in 5G Networks}},
  booktitle = {Proc. IEEE 2023 GLOBECOM Workshop on Cellular UAV and Satellite Communications},
  year = {2023},
  month = {12},
  publisher = {IEEE Press Piscataway},
  url = {https://drive.google.com/file/d/14xpsFlX\_fOzbeGyNgm2hroIgozwNqOSw/view},
  }

• B. Salamat, D. Bencic, G. Elsbacher, C. Seidel, and A. M. Tonello, “Investigating Integral Reinforcement Learning to Achieve Asymptotic Stability in Underactuated Mechanical Systems,” IEEE Robotics and Automation Letters, vol. 9, iss. 1, p. 191–198, 2023. doi:10.1109/LRA.2023.3332556
  [BibTeX] [Abstract] [Download PDF]
  

  This article introduces an innovative data-driven integral reinforcement learning (IRL) algorithm for the control of a class of underactuated mechanical systems. We propose a novel value function that allows shaping and learning the potential energy of an underactuated system and to drive it to a desired closed-loop potential energy. Consequently, we derive an actor-control policy that ensures asymptotic stability. In addition, we propose to parameterize the value function with a multi-layered perceptron (with 0, 1 and 2 hidden layers), exploring various parameter configurations. Eventually, we assess the performance of the proposed IRL through simulations and experimental results, thus confirming the practical effectiveness of the control design approach.

  @article{0f4de0c48bd0fe7a018bd23e13630039,
  author = {Salamat, Babak and Bencic, Daniel and Elsbacher, Gerhard and Seidel, Christian and Tonello, Andrea M.},
  title = {{Investigating Integral Reinforcement Learning to Achieve Asymptotic Stability in Underactuated Mechanical Systems}},
  journal = {IEEE Robotics and Automation Letters },
  year = {2023},
  abstract = {This article introduces an innovative data-driven integral reinforcement learning (IRL) algorithm for the control of a class of underactuated mechanical systems. We propose a novel value function that allows shaping and learning the potential energy of an underactuated system and to drive it to a desired closed-loop potential energy. Consequently, we derive an actor-control policy that ensures asymptotic stability. In addition, we propose to parameterize the value function with a multi-layered perceptron (with 0, 1 and 2 hidden layers), exploring various parameter configurations. Eventually, we assess the performance of the proposed IRL through simulations and experimental results, thus confirming the practical effectiveness of the control design approach.},
  doi = {10.1109/LRA.2023.3332556},
  volume = {9},
  number = {1},
  pages = {191--198},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/10316576},
  }

• M. Gutmann and B. Rinner, “Multidrone Mission Execution With EAMOS: From Text to Mission,” IEEE Access, vol. 11, p. 125460–125491, 2023. doi:10.1109/ACCESS.2023.3330652
  [BibTeX] [Abstract]
  

  Existing software tools for specifying and executing multidrone missions are limited to route planning or tightly coupled to specific drone hardware. We introduce EAMOS (Execution of Aerial Multidrone Missions and Operations Specification Framework), which allows us to specify missions intuitively, text-based, and provides a mission compiler, a mission middle layer, and a distributed drone execution environment. The middle layer wraps the control of individual drone-specific capabilities, such as launch, fly to position, or perform a maneuver, into a public API that transparently utilizes the capabilities of numerous drone platforms. We exploit the Go programming language to implement critical components of the framework and provide an interface for ROS-based drone platforms. EAMOS automates the mission execution on real, virtual, and even hybrid robotic setups involving real and virtual drones. We demonstrate the successful deployment of EAMOS with four missions executed on Pixhawk/PX4-equipped quadcopters and virtual drones simulated with Airsim. We assess the performance of our proposed approach by analyzing the number of nodes and arcs of the mission graphs, which are an essential artifact of our mission compilation, the utilization of ROS service calls during mission execution, and the duration of compilation, deployment, and mission execution. Overall, our experiments showed that our drones correctly behaved during mission execution as expected and specified by their mission, the generated mission artifacts were efficiently manageable, and processing times allowed for a fluent workflow.

  @article{0f4de0c78bd0fdeb018bd1a915a10000,
  author = {Gutmann, Markus and Rinner, Bernhard},
  title = {{Multidrone Mission Execution With EAMOS: From Text to Mission}},
  journal = {IEEE Access},
  year = {2023},
  abstract = {Existing software tools for specifying and executing multidrone missions are limited to route planning or tightly coupled to specific drone hardware. We introduce EAMOS (Execution of Aerial Multidrone Missions and Operations Specification Framework), which allows us to specify missions intuitively, text-based, and provides a mission compiler, a mission middle layer, and a distributed drone execution environment. The middle layer wraps the control of individual drone-specific capabilities, such as launch, fly to position, or perform a maneuver, into a public API that transparently utilizes the capabilities of numerous drone platforms. We exploit the Go programming language to implement critical components of the framework and provide an interface for ROS-based drone platforms. EAMOS automates the mission execution on real, virtual, and even hybrid robotic setups involving real and virtual drones. We demonstrate the successful deployment of EAMOS with four missions executed on Pixhawk/PX4-equipped quadcopters and virtual drones simulated with Airsim. We assess the performance of our proposed approach by analyzing the number of nodes and arcs of the mission graphs, which are an essential artifact of our mission compilation, the utilization of ROS service calls during mission execution, and the duration of compilation, deployment, and mission execution. Overall, our experiments showed that our drones correctly behaved during mission execution as expected and specified by their mission, the generated mission artifacts were efficiently manageable, and processing times allowed for a fluent workflow.},
  doi = {10.1109/ACCESS.2023.3330652},
  volume = {11},
  pages = {125460--125491},
  month = {11},
  }

• R. Ahmad, B. Rinner, R. Wazirali, S. K. M. Abujayyab, and R. Almajalid, “Two-Level Sensor Self-Calibration Based on Interpolation and Autoregression for Low-Cost Wireless Sensor Networks,” IEEE Sensors Journal, vol. 23, iss. 20, p. 25242–25253, 2023. doi:10.1109/JSEN.2023.3309759
  [BibTeX] [Download PDF]

  @article{0f4de0c68b40953e018b411df3e50000,
  author = {Ahmad, Rami and Rinner, Bernhard and Wazirali, Raniyah and Abujayyab, Sohaib K. M. and Almajalid, Rania},
  title = {{Two-Level Sensor Self-Calibration Based on Interpolation and Autoregression for Low-Cost Wireless Sensor Networks}},
  journal = {IEEE Sensors Journal},
  year = {2023},
  doi = {10.1109/JSEN.2023.3309759},
  volume = {23},
  number = {20},
  pages = {25242--25253},
  month = {10},
  url = {https://ieeexplore.ieee.org/document/10238379},
  }

• U. Schilcher, C. Rauter, and C. Bettstetter, “Radii of Emergent Patterns in Swarmalator Systems,” in IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS), Piscataway (NJ), 2023, p. 151–156. doi:10.1109/ACSOS58161.2023.00034
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c58adebbfc018ae0bfb36a0001,
  author = {Schilcher, Udo and Rauter, Christoph and Bettstetter, Christian},
  title = {{Radii of Emergent Patterns in Swarmalator Systems}},
  booktitle = {IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS)},
  year = {2023},
  doi = {10.1109/ACSOS58161.2023.00034},
  pages = {151--156},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10336014},
  }

• M. Rahmani and B. Rinner, “Anomaly Detection in Multi-Robot Systems Exploiting Self-Awareness,” in International Conference on Frontiers of Artificial Intelligence, Ethics, and Multidisciplinary Applications (FAIEMA), Berlin, 2023, p. 1–14.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c78d1fbb7d018d20af9ac1001c,
  author = {Rahmani, Mohammad and Rinner, Bernhard},
  title = {{Anomaly Detection in Multi-Robot Systems Exploiting Self-Awareness}},
  booktitle = {International Conference on Frontiers of Artificial Intelligence, Ethics, and Multidisciplinary Applications (FAIEMA)},
  year = {2023},
  pages = {1--14},
  address = {Berlin},
  month = {9},
  publisher = {Springer},
  url = {https://www.faiema.org/},
  }

• J. F. Schmidt, U. Schilcher, A. Vogell, and C. Bettstetter, “Using Randomization in Self-organized Synchronization for Wireless Networks,” ACM Transactions on Autonomous and Adaptive Systems, vol. 18, iss. 3, p. 1–20, 2023. doi:10.1145/3605553
  [BibTeX] [Abstract]
  

  The concept of pulse-coupled oscillators for self-organized synchronization has been applied to wireless systems. Putting theory into practice, however, faces certain obstacles, particularly in radio technologies that cannot implement pulses but use common messages for interactions between nodes. This raises the question of how to deal with interference between messages. We show that interference can disturb the synchronization process and propose low-complex, randomization-based techniques to address this issue. First, we demonstrate that randomly switching between two transmit power levels (without increasing the average power) can expedite synchronization. The high-power transmissions temporarily boost network connectivity with negligible impact on the average interference. Second, we reduce interference by blindly distributing the messages over the entire oscillator cycle. Instead of using a fixed oscillator phase at which the pulses are sent, each node chooses its own, randomly selected phase to send a synchronization message. This node-specific “fire phase” is contained in the message to permit others to compute the timing. Third, we suggest that such interference management can also be beneficial for other synchronization techniques and validate this claim using Glossy as an example. Our insights may contribute to feasible solutions for self-organized wireless synchronization. Further work is needed to gain a comprehensive understanding of the effects of randomization and to develop algorithms for the adaptability of local parameters.

  @article{0f4de0c68aca22c4018acb927bc10079,
  author = {Schmidt, Jorge Friedrich and Schilcher, Udo and Vogell, Arke and Bettstetter, Christian},
  title = {{Using Randomization in Self-organized Synchronization for Wireless Networks}},
  journal = {ACM Transactions on Autonomous and Adaptive Systems},
  year = {2023},
  abstract = {The concept of pulse-coupled oscillators for self-organized synchronization has been applied to wireless systems. Putting theory into practice, however, faces certain obstacles, particularly in radio technologies that cannot implement pulses but use common messages for interactions between nodes. This raises the question of how to deal with interference between messages. We show that interference can disturb the synchronization process and propose low-complex, randomization-based techniques to address this issue. First, we demonstrate that randomly switching between two transmit power levels (without increasing the average power) can expedite synchronization. The high-power transmissions temporarily boost network connectivity with negligible impact on the average interference. Second, we reduce interference by blindly distributing the messages over the entire oscillator cycle. Instead of using a fixed oscillator phase at which the pulses are sent, each node chooses its own, randomly selected phase to send a synchronization message. This node-specific “fire phase” is contained in the message to permit others to compute the timing. Third, we suggest that such interference management can also be beneficial for other synchronization techniques and validate this claim using Glossy as an example. Our insights may contribute to feasible solutions for self-organized wireless synchronization. Further work is needed to gain a comprehensive understanding of the effects of randomization and to develop algorithms for the adaptability of local parameters.},
  doi = {10.1145/3605553},
  volume = {18},
  number = {3},
  pages = {1--20},
  month = {9},
  }

• A. Pin, R. Rinaldo, A. M. Tonello, R. Marshall, M. Driusso, A. Biason, and A. Dalla Torre, “Opportunistic Channel Estimation with LTE Signals of Limited Bandwidth for Positioning Applications,” EURASIP Journal on Wireless Communications and Networking, p. 1–27, 2023. doi:10.1186/s13638-023-02281-0
  [BibTeX] [Abstract] [Download PDF]
  

  The positioning problem is interesting in a variety of applications, especially in indoor environments or in urban canyons, where the position information obtainable with traditional Global Navigation Satellite Systems is limited. In this paper, we deal with the problem of estimating, for the purposes of positioning, the time of arrival(TOA) and the angle of arrival (AOA) by processing LTE 3GPP signals, with particular attention to the uplink signals. The main contribution of this paper is the defnition of new opportunistic methods to estimate the TOA and the AOA using the upstream demodulation reference signal (DM-RS) instead of the Sounding Reference Signal. We will show that the use of DM-RS and of estimation algorithms such as the Space Alternating Generalized Expectation-Maximization and the Iterative Adaptive Approach for Amplitude and Phase estimation (IAA-APES) allows an efficient estimate of the parameters, in spite of the small, occupied bandwidth.

  @article{0f4de0c77b09c709017b0b4536a60108,
  author = {Pin, Alessandro and Rinaldo, Roberto and Tonello, Andrea M. and Marshall, Richard and Driusso, Marco and Biason, Alessandro and Dalla Torre, Andrea},
  title = {{Opportunistic Channel Estimation with LTE Signals of Limited Bandwidth for Positioning Applications}},
  journal = {EURASIP Journal on Wireless Communications and Networking},
  year = {2023},
  abstract = {The positioning problem is interesting in a variety of applications, especially in indoor environments or in urban canyons, where the position information obtainable with traditional Global Navigation Satellite Systems is limited. In this paper, we deal with the problem of estimating, for the purposes of positioning, the time of arrival(TOA) and the angle of arrival (AOA) by processing LTE 3GPP signals, with particular attention to the uplink signals. The main contribution of this paper is the defnition of new opportunistic methods to estimate the TOA and the AOA using the upstream demodulation reference signal (DM-RS) instead of the Sounding Reference Signal. We will show that the use of DM-RS and of estimation algorithms such as the Space Alternating Generalized Expectation-Maximization and the Iterative Adaptive Approach for Amplitude and Phase estimation (IAA-APES) allows an efficient estimate of the parameters, in spite of the small, occupied bandwidth.},
  doi = {10.1186/s13638-023-02281-0},
  pages = {1--27},
  month = {7},
  url = {https://jwcn-eurasipjournals.springeropen.com/articles/10.1186/s13638-023-02281-0},
  }

• M. Arif, S. S. U. Qadri, and M. O. B. Saeed, “A Novel Variable Step-Size LMS Algorithm for Decentralized Incremental Distributed Networks,” Circuits, Systems, and Signal Processing, vol. 42, p. 7226–7249, 2023. doi:10.1007/s00034-023-02426-y
  [BibTeX]

  @article{0f4de0c48c6b7d26018c6c8a0c4a0009,
  author = {Arif, Muhammad and Qadri, Syed Safi Uddin and Saeed, Muhammad Omer Bin},
  title = {{A Novel Variable Step-Size LMS Algorithm for Decentralized Incremental Distributed Networks}},
  journal = {Circuits, Systems, and Signal Processing},
  year = {2023},
  doi = {10.1007/s00034-023-02426-y},
  volume = {42},
  pages = {7226--7249},
  month = {7},
  }

• V. Mrazech, M. Arif, S. Jawed, and A. S. Malik, “Effective EEG Feature Selection for Interpretable MDD (Major Depressive Disorder) Classification,” in Proceedings of the Genetic and Evolutionary Computation Conference (GECCO ’23), New York, 2023, p. 1427–1435. doi:10.1145/3583131.3590398
  [BibTeX]

  @inproceedings{0f4de0c78c66566b018c67fb0de800dc,
  author = {Mrazech, Vojtech and Arif, Muhammad and Jawed, Soyiba and Malik, Aamir Saeed},
  title = {{Effective EEG Feature Selection for Interpretable MDD (Major Depressive Disorder) Classification}},
  booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference (GECCO '23)},
  year = {2023},
  doi = {10.1145/3583131.3590398},
  pages = {1427--1435},
  address = {New York},
  month = {7},
  publisher = {Association for Computing Machinery (ACM)},
  }

• E. Caballero Garces, A. Fakhreddine, and C. Bettstetter, “Interference by Drones to 5G Ground Users: A Simulation Study,” in DroNet’23 Proceedings of the Workshop on Micro Aerial Vehicle Networks, Systems, and Applications, London, 2023, p. 45–50. doi:10.1145/3597060.3597238
  [BibTeX]

  @inproceedings{0f4de0c68919832d01891c1d3d920032,
  author = {Caballero Garces, Enrique and Fakhreddine, Aymen and Bettstetter, Christian},
  title = {{Interference by Drones to 5G Ground Users: A Simulation Study}},
  booktitle = {DroNet'23 Proceedings of the Workshop on Micro Aerial Vehicle Networks, Systems, and Applications },
  year = {2023},
  doi = {10.1145/3597060.3597238},
  pages = {45--50},
  address = {London},
  month = {6},
  publisher = {ACM - London},
  }

• M. Gutmann and B. Rinner, “EAMOS: Execution of Aerial Multidrone Mission Operations andSpecifications Framework,” in Proceedings of the 2023 International Conference on Unmanned Aircraft Systems (ICUAS), Piscataway (NJ), 2023, p. 761–768.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c688b284520188b4357a310053,
  author = {Gutmann, Markus and Rinner, Bernhard},
  title = {{EAMOS: Execution of Aerial Multidrone Mission Operations andSpecifications Framework}},
  booktitle = {Proceedings of the 2023 International Conference on Unmanned Aircraft Systems (ICUAS)},
  year = {2023},
  pages = {761--768},
  address = {Piscataway (NJ)},
  month = {6},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=10156107},
  }

• N. Novello and A. M. Tonello, “Reinforcement Learning for Simplified Training in Fingerprinting Radio Localization,” in Sixth International Balkan Conference on Communications and Networking (Balkancom 2023), Piscataway (NJ), 2023. doi:10.1109/BalkanCom58402.2023.10167948
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c78889517501888b698f8e00c3,
  author = {Novello, Nicola and Tonello, Andrea M.},
  title = {{Reinforcement Learning for Simplified Training in Fingerprinting Radio Localization}},
  booktitle = {Sixth International Balkan Conference on Communications and Networking (Balkancom 2023)},
  year = {2023},
  doi = {10.1109/BalkanCom58402.2023.10167948},
  address = {Piscataway (NJ)},
  month = {6},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10167948},
  }

• N. A. Letizia, A. M. Tonello, and V. H. Poor, “Cooperative Channel Capacity Learning,” IEEE Communications Letters, 2023. doi:10.1109/LCOMM.2023.3282307
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, the problem of determining the capacity of a communication channel is formulated as a cooperative game, between a generator and a discriminator, that is solved via deep learning techniques. The task of the generator is to produce channel input samples for which the discriminator ideally distinguishes conditional from unconditional channel output samples. The learning approach, referred to as cooperative channel capacity learning (CORTICAL), provides both the optimal input signal distribution and the channel capacity estimate. Numerical results demonstrate that the proposed framework learns the capacity-achieving input distribution under challenging non-Shannon settings.

  @article{0f4de0c78889517501888b4b4735002b,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M. and Poor, H. Vincent},
  title = {{Cooperative Channel Capacity Learning}},
  journal = {IEEE Communications Letters},
  year = {2023},
  abstract = {In this paper, the problem of determining the capacity of a communication channel is formulated as a cooperative game, between a generator and a discriminator, that is solved via deep learning techniques. The task of the generator is to produce channel input samples for which the discriminator ideally distinguishes conditional from unconditional channel output samples. The learning approach, referred to as cooperative channel capacity learning (CORTICAL), provides both the optimal input signal distribution and the channel capacity estimate. Numerical results demonstrate that the proposed framework learns the capacity-achieving input distribution under challenging non-Shannon settings.},
  doi = {10.1109/LCOMM.2023.3282307},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/10143184/keywords\#keywords},
  }

• W. Xu, D. Inserra, G. Wen, and A. M. Tonello, “Low Complexity AoA Estimation with Planar Electromagnetic Lens Arrays,” in 2023 IEEE International Conference on Control, Electronics and Computer Technology (ICCECT), Piscataway (NJ), 2023, p. 1582–1587. doi:10.1109/ICCECT57938.2023.10140768
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c688b7aab90188b99961e600cb,
  author = {Xu, Wanqiang and Inserra, Daniele and Wen, Guangjun and Tonello, Andrea M.},
  title = {{Low Complexity AoA Estimation with Planar Electromagnetic Lens Arrays}},
  booktitle = {2023 IEEE International Conference on Control, Electronics and Computer Technology (ICCECT)},
  year = {2023},
  doi = {10.1109/ICCECT57938.2023.10140768},
  pages = {1582--1587},
  address = {Piscataway (NJ)},
  month = {4},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10140768},
  }

• D. Inserra, W. Xu, Y. Zhang, Z. Li, E. Abalo, F. Xie, G. Wen, and A. M. Tonello, “Reconfigurable Planar Electromagnetic Lens Array Modeling for Fast Performance Evaluation,” in 2023 IEEE International Conference on Control, Electronics and Computer Technology (ICCECT), Piscataway (NJ), 2023, p. 1578–1581. doi:10.1109/ICCECT57938.2023.10140289
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c688b7aab90188b98d1e32007d,
  author = {Inserra, Daniele and Xu, Wanqiang and Zhang, Yuqiong and Li, Zehua and Abalo, Essohan-Eyouemou and Xie, Fuzhen and Wen, Guangjun and Tonello, Andrea M.},
  title = {{Reconfigurable Planar Electromagnetic Lens Array Modeling for Fast Performance Evaluation}},
  booktitle = {2023 IEEE International Conference on Control, Electronics and Computer Technology (ICCECT)},
  year = {2023},
  doi = {10.1109/ICCECT57938.2023.10140289},
  pages = {1578--1581},
  address = {Piscataway (NJ)},
  month = {4},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10140289},
  }

• M. Moinuddin, A. Zerguine, and M. Arif, “A Weighted Gaussian Kernel Least Mean Square Algorithm,” Circuits, Systems, and Signal Processing, iss. 42, p. 5267–5288, 2023. doi:10.1007/s00034-023-02337-y
  [BibTeX]

  @article{0f4de0c48c6b7d26018c6c9b26e5004e,
  author = {Moinuddin, Muhammad and Zerguine, Azzedine and Arif, Muhammad},
  title = {{A Weighted Gaussian Kernel Least Mean Square Algorithm}},
  journal = {Circuits, Systems, and Signal Processing},
  year = {2023},
  doi = {10.1007/s00034-023-02337-y},
  number = {42},
  pages = {5267--5288},
  month = {4},
  }

• V. Korzhun and A. M. Tonello, “Achievable Throughput in In-Band Full-Duplex Broadband Power Line Communications,” in IEEE International Symposium on Power Line Communications – ISPLC 2023, Piscataway (NJ), 2023, p. 49–54. doi:10.1109/ISPLC57122.2023.10104178
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c5874b695d01874c1720780067,
  author = {Korzhun, Vitali and Tonello, Andrea M.},
  title = {{Achievable Throughput in In-Band Full-Duplex Broadband Power Line Communications}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2023},
  year = {2023},
  doi = {10.1109/ISPLC57122.2023.10104178},
  pages = {49--54},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10104178},
  }

• A. M. Tonello and M. De Piante, “On Defining and Retrieving an Invariant Channel Model in Wired Communication Systems,” in IEEE International Symposium on Power Line Communications – ISPLC 2023, Piscataway (NJ), 2023, p. 7–12. doi:10.1109/ISPLC57122.2023.10104176
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c5874b695d01874c13d230004a,
  author = {Tonello, Andrea M. and De Piante, Marco},
  title = {{On Defining and Retrieving an Invariant Channel Model in Wired Communication Systems}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2023},
  year = {2023},
  doi = {10.1109/ISPLC57122.2023.10104176},
  pages = {7--12},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10104176},
  }

• F. Marcuzzi and A. M. Tonello, “Topology-based Machine Learning: Predicting Power Line Communication Quality in Smart Grids,” IEEE Access, vol. 11, p. 24851–24862, 2023. doi:10.1109/ACCESS.2023.3245361
  [BibTeX] [Abstract]
  

  Smart Grids (SG) envision the exchange of both power and data, enabling system and customers to generate and transfer energy in a more efficient and balanced way. Among the relevant communication technologies, we find Power-Line Communications (PLC), which allow for data transmission on the electrical cables used for power delivery. Despite the hostile medium, PLC offer reliability and data rates to support exchange of control traffic, smart metering and sensor network applications. The distribution portion of the power delivery network, which we focus on in this work, is topologically complex, which makes channel prediction complicated. We show how random realistic topologies can be generated and then used to train a Machine Learning (ML) algorithm to infer PLC link quality (based on channel response) exploiting solely topology descriptors. We eventually show how precisely the communication quality can be inferred from the SG topology through ML. In doing so, we also discuss how the ML approach offers the common ground between top-down and bottom-up approaches for network characterization and how it enables smart decision making in the SG.

  @article{0f4de0c5874b695d01874c06f1670022,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{Topology-based Machine Learning: Predicting Power Line Communication Quality in Smart Grids}},
  journal = {IEEE Access},
  year = {2023},
  abstract = {Smart Grids (SG) envision the exchange of both power and data, enabling system and customers to generate and transfer energy in a more efficient and balanced way. Among the relevant communication technologies, we find Power-Line Communications (PLC), which allow for data transmission on the electrical cables used for power delivery. Despite the hostile medium, PLC offer reliability and data rates to support exchange of control traffic, smart metering and sensor network applications. The distribution portion of the power delivery network, which we focus on in this work, is topologically complex, which makes channel prediction complicated. We show how random realistic topologies can be generated and then used to train a Machine Learning (ML) algorithm to infer PLC link quality (based on channel response) exploiting solely topology descriptors. We eventually show how precisely the communication quality can be inferred from the SG topology through ML. In doing so, we also discuss how the ML approach offers the common ground between top-down and bottom-up approaches for network characterization and how it enables smart decision making in the SG.},
  doi = {10.1109/ACCESS.2023.3245361},
  volume = {11},
  pages = {24851--24862},
  month = {3},
  }

• B. Salamat and A. M. Tonello, “Model-Free Distributed Reinforcement Learning State Estimation of a Dynamical System Using Integral Value Functions,” IEEE Open Journal of Control Systems, vol. 2, p. 70–78, 2023. doi:10.1109/OJCSYS.2023.3250089
  [BibTeX] [Abstract] [Download PDF]
  

  One of the challenging problems in sensor network systems is to estimate and track the state of a target point mass with unknown dynamics. Recent improvements in deep learning (DL) show a renewed interest in applying DL techniques to state estimation problems. However, the process noise is absent which seems to indicate that the point-mass target must be non-maneuvering, as process noise is typically as significant as the measurement noise for tracking maneuvering targets. In this paper, we propose a continuous-time (CT) model-free or model-building distributed reinforcement learning estimator (DRLE) using an integral value function in sensor networks. The DRLE algorithm is capable of learning an optimal policy from a neural value function that aims to provide the estimation of a target point mass. The proposed estimator consists of two high pass consensus filters in terms of weighted measurements and inverse-covariance matrices and a critic reinforcement learning mechanism for each node in the network. The efficiency of the proposed DRLE is shown by a simulation experiment of a network of underactuated vertical takeoff and landing aircraft with strong input coupling. The experiment highlights two advantages of DRLE: i) it does not require the dynamic model to be known, and ii) it is an order of magnitude faster than the state-dependent Riccati equation (SDRE) baseline.

  @article{0f4de0c5874b695d01874c342640010a,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Model-Free Distributed Reinforcement Learning State Estimation of a Dynamical System Using Integral Value Functions}},
  journal = {IEEE Open Journal of Control Systems},
  year = {2023},
  abstract = {One of the challenging problems in sensor network systems is to estimate and track the state of a target point mass with unknown dynamics. Recent improvements in deep learning (DL) show a renewed interest in applying DL techniques to state estimation problems. However, the process noise is absent which seems to indicate that the point-mass target must be non-maneuvering, as process noise is typically as significant as the measurement noise for tracking maneuvering targets. In this paper, we propose a continuous-time (CT) model-free or model-building distributed reinforcement learning estimator (DRLE) using an integral value function in sensor networks. The DRLE algorithm is capable of learning an optimal policy from a neural value function that aims to provide the estimation of a target point mass. The proposed estimator consists of two high pass consensus filters in terms of weighted measurements and inverse-covariance matrices and a critic reinforcement learning mechanism for each node in the network. The efficiency of the proposed DRLE is shown by a simulation experiment of a network of underactuated vertical takeoff and landing aircraft with strong input coupling. The experiment highlights two advantages of DRLE: i) it does not require the dynamic model to be known, and ii) it is an order of magnitude faster than the state-dependent Riccati equation (SDRE) baseline.},
  doi = {10.1109/OJCSYS.2023.3250089},
  volume = {2},
  pages = {70--78},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/10054475},
  }

• M. Umlauft, M. M. Schranz, and W. Elmenreich, “Simulation of swarm intelligence for flexible job-shop scheduling with swarmfabsim: Case studies with artificial hormones and an ant algorithm,” in Simulation and Modeling Methodologies, Technologies and Applications, G. Wagner, F. Werner, and F. D. Rango, Eds., , 2023, vol. 780, p. 133–155. doi:10.1007/978-3-031-43824-0_8
  [BibTeX] [Abstract] [Download PDF]
  

  This book chapter presents SwarmFabSim, an open-source simulation framework using NetLogo for agent-based simulation of a semiconductor production plant organized by the job-shop principle. It models the plant as a self-organizing system using swarm intelligence algorithms for bottom-up optimization. The model is composed of a set of agents, which includes machines, workcenters, lots, and processes. While the general model is not restricted to a particular programming language, SwarmFabSim and the presented case studies are implemented in NetLogo, one of the most widely used agent-based simulation platforms. SwarmFabSim consists of a structured system of code modules using a callback architecture, allowing to easily modify or exchange the swarm algorithm under investigation. Users can configure their fab model and simulations via the user interface and configuration files. The results are presented to the user via log files that include detailed results as well as overall key performance indicators: makespan, average flow factor, and lot tardiness. SwarmFabSim (running on NetLogo version 6.1 or later), including sample swarm algorithms and configuration files is available as an open-source project on GitHub. Additionally to the framework SwarmFabSim, we present a detailed case study of two algorithms for fab optimization. Together with the algorithms, we describe three different fab setups in SwarmFabSim and demonstrate how to use the framework for their evaluation. A detailed comparison of the performance results of the algorithms complements this chapter.

  @incollection{0f4de0c4929320490192960f8318003a,
  author = {Umlauft, Martina and Schranz, Melanie Marianne and Elmenreich, Wilfried},
  title = {{Simulation of swarm intelligence for flexible job-shop scheduling with swarmfabsim: Case studies with artificial hormones and an ant algorithm}},
  booktitle = {Simulation and Modeling Methodologies, Technologies and Applications},
  year = {2023},
  abstract = {This book chapter presents SwarmFabSim, an open-source simulation framework using NetLogo for agent-based simulation of a semiconductor production plant organized by the job-shop principle. It models the plant as a self-organizing system using swarm intelligence algorithms for bottom-up optimization. The model is composed of a set of agents, which includes machines, workcenters, lots, and processes. While the general model is not restricted to a particular programming language, SwarmFabSim and the presented case studies are implemented in NetLogo, one of the most widely used agent-based simulation platforms. SwarmFabSim consists of a structured system of code modules using a callback architecture, allowing to easily modify or exchange the swarm algorithm under investigation. Users can configure their fab model and simulations via the user interface and configuration files. The results are presented to the user via log files that include detailed results as well as overall key performance indicators: makespan, average flow factor, and lot tardiness. SwarmFabSim (running on NetLogo version 6.1 or later), including sample swarm algorithms and configuration files is available as an open-source project on GitHub. Additionally to the framework SwarmFabSim, we present a detailed case study of two algorithms for fab optimization. Together with the algorithms, we describe three different fab setups in SwarmFabSim and demonstrate how to use the framework for their evaluation. A detailed comparison of the performance results of the algorithms complements this chapter.},
  doi = {10.1007/978-3-031-43824-0\_8},
  editor = {Gerd Wagner and Frank Werner and Floriano De Rango},
  volume = {780},
  series = {Lecture Notes in Networks and Systems},
  pages = {133--155},
  month = {2},
  isbn = {978-3-031-43823-3},
  url = {https://link.springer.com/book/10.1007/978-3-031-43824-0},
  }

• J. A. Maya and A. M. Tonello, “Selection Square Combining: A Fully-Distributed Radio Source Detector for Fast Fading Channels Based on Energy Measurements,” IEEE Transactions on Signal Processing, vol. 70, p. 6348–6359, 2023. doi:10.1109/TSP.2023.3238273
  [BibTeX] [Abstract] [Download PDF]
  

  In this article, we tackle the problem of fully-distributed detection of a radio source emitting a signal in a fast fading scenario. We consider that geographically distributed sensor nodes obtain energy measurements and compute cooperatively and in a distributed fashion a decision metric for detecting if the source is present or absent without the need of a central node. Since we assume that the sensing channels -from the source to the nodes- vary rapidly due to the nodes and/or the source mobility, we derive an algorithm based on the average probability density function (PDF) of the measurements with respect to the channel PDF. The derived model has some unknown parameters (like the source transmitted energy or the channel mean attenuation). Therefore, we follow the philosophy of the Generalized Likelihood Ratio Test (GLRT) theory and obtain two test statistics suitable for practical scenarios: i) the S-GLRT statistic, and ii) the selection square combining (SSC) statistic. We show that SSC is asymptotically equivalent to S-GLRT in the low signal-to-noise ratio regime, and compute its theoretical performance in that scenario. Finally, we compare the algorithms' performance in finite regimes through Monte Carlo simulations. We show that the two proposed algorithms offer similar performance, and are capable of exceeding that of other algorithms which are frequently used in fast fading scenarios.

  @article{0f4de0c5874b695d01874c1be2030093,
  author = {Maya, Juan Augusto and Tonello, Andrea M.},
  title = {{Selection Square Combining: A Fully-Distributed Radio Source Detector for Fast Fading Channels Based on Energy Measurements}},
  journal = {IEEE Transactions on Signal Processing},
  year = {2023},
  abstract = {In this article, we tackle the problem of fully-distributed detection of a radio source emitting a signal in a fast fading scenario. We consider that geographically distributed sensor nodes obtain energy measurements and compute cooperatively and in a distributed fashion a decision metric for detecting if the source is present or absent without the need of a central node. Since we assume that the sensing channels -from the source to the nodes- vary rapidly due to the nodes and/or the source mobility, we derive an algorithm based on the average probability density function (PDF) of the measurements with respect to the channel PDF. The derived model has some unknown parameters (like the source transmitted energy or the channel mean attenuation). Therefore, we follow the philosophy of the Generalized Likelihood Ratio Test (GLRT) theory and obtain two test statistics suitable for practical scenarios: i) the S-GLRT statistic, and ii) the selection square combining (SSC) statistic. We show that SSC is asymptotically equivalent to S-GLRT in the low signal-to-noise ratio regime, and compute its theoretical performance in that scenario. Finally, we compare the algorithms\' performance in finite regimes through Monte Carlo simulations. We show that the two proposed algorithms offer similar performance, and are capable of exceeding that of other algorithms which are frequently used in fast fading scenarios.},
  doi = {10.1109/TSP.2023.3238273},
  volume = {70},
  pages = {6348--6359},
  month = {1},
  url = {https://ieeexplore.ieee.org/document/10021864},
  }

• M. K. Atiq, U. Schilcher, P. Xhemal, M. Haenggi, and C. Bettstetter, “Burstiness of Interference Pikes in Wireless Networks,” IEEE Open Journal of Vehicular Technology, vol. 4, p. 293–309, 2023. doi:10.1109/OJVT.2023.3240236
  [BibTeX] [Abstract] [Download PDF]
  

  The temporal dynamics of interference in wireless networks affects their performance but has only been studied for some cases. This article addresses this gap by analyzing high-interference events, called pikes, concluding that they arrive in bursts in many cases. Specifically, we show that in Poisson networks with random access and multipath fading, the pike interarrival time increases with the interference correlation, irrespective of the source of correlation and burstiness of pikes. To demonstrate the applicability of this theory, we conduct a measurement campaign with an automotive user in different commercial 4G cellular networks. The experimental results indicate that interference pikes are bursty in the real world as well.

  @article{0f4de0c787314fd80187334af88d0216,
  author = {Atiq, Mahin Khushbakht and Schilcher, Udo and Xhemal, Pengili and Haenggi, Martin and Bettstetter, Christian},
  title = {{Burstiness of Interference Pikes in Wireless Networks}},
  journal = {IEEE Open Journal of Vehicular Technology},
  year = {2023},
  abstract = {The temporal dynamics of interference in wireless networks affects their performance but has only been studied for some cases. This article addresses this gap by analyzing high-interference events, called pikes, concluding that they arrive in bursts in many cases. Specifically, we show that in Poisson networks with random access and multipath fading, the pike interarrival time increases with the interference correlation, irrespective of the source of correlation and burstiness of pikes. To demonstrate the applicability of this theory, we conduct a measurement campaign with an automotive user in different commercial 4G cellular networks. The experimental results indicate that interference pikes are bursty in the real world as well.},
  doi = {10.1109/OJVT.2023.3240236},
  volume = {4},
  pages = {293--309},
  month = {1},
  url = {https://ieeexplore.ieee.org/document/10027163},
  }

2022

• H. Bousbiat, C. Klemenjak, Y. Himeur, W. Elmenreich, A. Amira, W. Mansoor, and S. Atalla, “Neural NILM Learning Paradigms: From Centralised to Decentralised Learning,” in Proceedings of the 2022 5th International Conference on Signal Processing and Information Security (ICSPIS), 2022, p. 138–142. doi:10.1109/icspis57063.2022.10002485
  [BibTeX]

  @inproceedings{0f4de0c7860af3f501860c33dd1f0020,
  author = {Bousbiat, Hafsa and Klemenjak, Christoph and Himeur, Yassine and Elmenreich, Wilfried and Amira, Abbes and Mansoor, Wathiq and Atalla, Shadi},
  title = {{Neural NILM Learning Paradigms: From Centralised to Decentralised Learning}},
  booktitle = {Proceedings of the 2022 5th International Conference on Signal Processing and Information Security (ICSPIS)},
  year = {2022},
  doi = {10.1109/icspis57063.2022.10002485},
  pages = {138--142},
  month = {12},
  }

• A. Fakhreddine, C. Raffelsberger, M. Sende, and C. Bettstetter, “Experiments on Drone-to-Drone Communication with Wi-Fi, LTE-A, and 5G,” in IEEE 2022 Globecom workshops, Piscataway (NJ), 2022, p. 904–909. doi:10.1109/GCWkshps56602.2022.10008743
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c78537cf4301853a07a15f0349,
  author = {Fakhreddine, Aymen and Raffelsberger, Christian and Sende, Micha and Bettstetter, Christian},
  title = {{Experiments on Drone-to-Drone Communication with Wi-Fi, LTE-A, and 5G}},
  booktitle = {IEEE 2022 Globecom workshops},
  year = {2022},
  doi = {10.1109/GCWkshps56602.2022.10008743},
  series = {2022 IEEE Globecom Workshops (GC Wkshps): Workshop on Cellular UAV and Satellite Communications},
  pages = {904--909},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/10008743},
  }

• K. Chen-Hu, M. J. Fernandez-Getino Garcia, A. M. Tonello, and A. Garcia Armada, “Phase-domain Injected Training for Channel Estimation in Constant Envelope OFDM,” IEEE Transactions on Wireless Communications, p. 1–18, 2022. doi:10.1109/TWC.2022.3221903
  [BibTeX] [Abstract] [Download PDF]
  

  Constant envelope orthogonal frequency division multiplexing (CE-OFDM) is a multi-carrier waveform with 0 dB peak-to-average power ratio (PAPR). This property enables the exploitation of multi-carrier waveforms with non-linear power amplifiers, avoiding the undesirable clipping effects. However, the existing channel estimation techniques designed for OFDM cannot be reused, since the use of a phase modulator makes CE-OFDM a non-linear waveform. Previous works assumed that the channel estimation process relies on the transmission of preambles, and the data symbols are equalized using a frequency domain equalizer (FDE). To avoid the overhead induced by preambles, a phase-domain injected training (PIT) is proposed, where the pilot sequence is embedded in the phase dimension of the data symbols. This novel approach does not waste time and/or frequency resources as in preamble-based schemes. Moreover, it does not require additional power for the training. The received symbols are averaged with a dual procedure, and owing to the particular structure of CE-OFDM, the channel estimates are recovered. Also, the analytical expression of the channel estimation mean squared error (MSE) is derived. Finally, several numerical results illustrate the performance of the proposal, showing that the MSE, bit error rate (BER) and achievable rate are improved, as compared to the existing works.

  @article{0f4de0c5849829f50184996b139a0003,
  author = {Chen-Hu, Kun and Fernandez-Getino Garcia, Maria Julia and Tonello, Andrea M. and Garcia Armada, Ana},
  title = {{Phase-domain Injected Training for Channel Estimation in Constant Envelope OFDM}},
  journal = {IEEE Transactions on Wireless Communications},
  year = {2022},
  abstract = {Constant envelope orthogonal frequency division multiplexing (CE-OFDM) is a multi-carrier waveform with 0 dB peak-to-average power ratio (PAPR). This property enables the exploitation of multi-carrier waveforms with non-linear power amplifiers, avoiding the undesirable clipping effects. However, the existing channel estimation techniques designed for OFDM cannot be reused, since the use of a phase modulator makes CE-OFDM a non-linear waveform. Previous works assumed that the channel estimation process relies on the transmission of preambles, and the data symbols are equalized using a frequency domain equalizer (FDE). To avoid the overhead induced by preambles, a phase-domain injected training (PIT) is proposed, where the pilot sequence is embedded in the phase dimension of the data symbols. This novel approach does not waste time and/or frequency resources as in preamble-based schemes. Moreover, it does not require additional power for the training. The received symbols are averaged with a dual procedure, and owing to the particular structure of CE-OFDM, the channel estimates are recovered. Also, the analytical expression of the channel estimation mean squared error (MSE) is derived. Finally, several numerical results illustrate the performance of the proposal, showing that the MSE, bit error rate (BER) and achievable rate are improved, as compared to the existing works.},
  doi = {10.1109/TWC.2022.3221903},
  pages = {1--18},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/9955581},
  }

• A. Vogell, U. Schilcher, J. F. Schmidt, and C. Bettstetter, “Of Diamonds, Rings, and Bracelets: Local Values of the Response Parameter can Increase the Synchronization Probability in Pulse-Coupled Oscillators,” in IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS), Piscataway (NJ), 2022, p. 25–30. doi:10.1109/ACSOSC56246.2022.00022
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c7845538330184573195b200ad,
  author = {Vogell, Arke and Schilcher, Udo and Schmidt, Jorge Friedrich and Bettstetter, Christian},
  title = {{Of Diamonds, Rings, and Bracelets: Local Values of the Response Parameter can Increase the Synchronization Probability in Pulse-Coupled Oscillators}},
  booktitle = {IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS)},
  year = {2022},
  doi = {10.1109/ACSOSC56246.2022.00022},
  pages = {25--30},
  address = {Piscataway (NJ)},
  month = {11},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9935090},
  }

• D. Neuhold, A. Fakhreddine, and C. Bettstetter, “HiPR+: A Protocol for Centimeter 3D Localization based on UWB,” in Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems, London, 2022, p. 181–188. doi:10.1145/3551659.3559043
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c58479445601847c8927040183,
  author = {Neuhold, Daniel and Fakhreddine, Aymen and Bettstetter, Christian},
  title = {{HiPR+: A Protocol for Centimeter 3D Localization based on UWB}},
  booktitle = {Proc. ACM Intern. Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems },
  year = {2022},
  doi = {10.1145/3551659.3559043},
  pages = {181--188},
  address = {London},
  month = {10},
  publisher = {ACM - London},
  url = {https://dl.acm.org/doi/10.1145/3551659.3559043},
  }

• V. Korzhun and A. M. Tonello, “Channel Tracking for Future Powerline-based Full-Duplex Smart Grid Communication Networks,” in International Conference on Smart Systems and Technologies (SST) 2022, Piscataway (NJ), 2022. doi:10.1109/SST55530.2022.9954747
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c783c107e50183c200d33700c8,
  author = {Korzhun, Vitali and Tonello, Andrea M.},
  title = {{Channel Tracking for Future Powerline-based Full-Duplex Smart Grid Communication Networks}},
  booktitle = {International Conference on Smart Systems and Technologies (SST) 2022},
  year = {2022},
  doi = {10.1109/SST55530.2022.9954747},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9954747},
  }

• J. F. Schmidt, U. Schilcher, S. Borkotoky, and C. Schmidt, “Energy Consumption in LoRa IoT: Benefits of Adding Relays to Dense Networks,” in IEEE Symposium on Computers and Communications (ISCC 2022), Piscataway (NJ), 2022, p. 1–6. doi:10.1109/ISCC55528.2022.9912934
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c483349c6c018336fed6b3020a,
  author = {Schmidt, Jorge Friedrich and Schilcher, Udo and Borkotoky, Siddhartha and Schmidt, Christian},
  title = {{Energy Consumption in LoRa IoT: Benefits of Adding Relays to Dense Networks}},
  booktitle = {IEEE Symposium on Computers and Communications (ISCC 2022)},
  year = {2022},
  doi = {10.1109/ISCC55528.2022.9912934},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9912934},
  }

• J. A. Maya and A. M. Tonello, “A Fully-Distributed Radio Source Detector for Fast Fading Rayleigh Channels,” in 2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall), Piscataway (NJ), 2022, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c68537cee8018539afa5200273,
  author = {Maya, Juan Augusto and Tonello, Andrea M.},
  title = {{A Fully-Distributed Radio Source Detector for Fast Fading Rayleigh Channels}},
  booktitle = {2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)},
  year = {2022},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://events.vtsociety.org/vtc2022-fall/},
  }

• A. M. Tonello and N. A. Letizia, “MIND: Maximum Mutual Information Based Neural Decoder,” IEEE Communications Letters, vol. 26, iss. 12, p. 2954–2958, 2022. doi:10.1109/LCOMM.2022.3207379
  [BibTeX] [Abstract] [Download PDF]
  

  We are assisting at a growing interest in the development of learning architectures with application to digital communication systems. Herein, we consider the detection/decoding problem. We aim at developing an optimal neural architecture for such a task. The definition of the optimal criterion is a fundamental step. We propose to use the mutual information (MI) of the channel input-output signal pair, which yields to the minimization of the a-posteriori information of the transmitted codeword given the communication channel output observation. The computation of the a-posteriori information is a formidable task, and for the majority of channels it is unknown. Therefore, it has to be learned. For such an objective, we propose a novel neural estimator based on a discriminative formulation. This leads to the derivation of the mutual information neural decoder (MIND). The developed neural architecture is capable not only to solve the decoding problem in unknown channels, but also to return an estimate of the average MI achieved with the coding scheme, as well as the decoding error probability. Several numerical results are reported and compared with maximum a-posteriori and maximum likelihood decoding strategies.

  @article{0f4de0c783c107e50183c1f8551a008b,
  author = {Tonello, Andrea M. and Letizia, Nunzio Alexandro},
  title = {{MIND: Maximum Mutual Information Based Neural Decoder}},
  journal = {IEEE Communications Letters},
  year = {2022},
  abstract = {We are assisting at a growing interest in the development of learning architectures with application to digital communication systems. Herein, we consider the detection/decoding problem. We aim at developing an optimal neural architecture for such a task. The definition of the optimal criterion is a fundamental step. We propose to use the mutual information (MI) of the channel input-output signal pair, which yields to the minimization of the a-posteriori information of the transmitted codeword given the communication channel output observation. The computation of the a-posteriori information is a formidable task, and for the majority of channels it is unknown. Therefore, it has to be learned. For such an objective, we propose a novel neural estimator based on a discriminative formulation. This leads to the derivation of the mutual information neural decoder (MIND). The developed neural architecture is capable not only to solve the decoding problem in unknown channels, but also to return an estimate of the average MI achieved with the coding scheme, as well as the decoding error probability. Several numerical results are reported and compared with maximum a-posteriori and maximum likelihood decoding strategies.},
  doi = {10.1109/LCOMM.2022.3207379},
  volume = {26},
  number = {12},
  pages = {2954--2958},
  month = {9},
  url = {https://ieeexplore.ieee.org/document/9895352},
  }

• H. Bousbiat, A. Faustine, C. Klemenjak, L. Pereira, and W. Elmenreich, “Unlocking the Full Potential of Neural NILM: On Automation, Hyperparameters & Modular Pipelines,” IEEE Transactions on Industrial Informatics, p. 1–9, 2022. doi:10.1109/TII.2022.3206322
  [BibTeX] [Abstract] [Download PDF]
  

  Non-Intrusive Load Monitoring (NILM) techniques are increasingly becoming a key instrument for identifying the power consumption of individual appliances based on a single metering point. Particularly Deep learning models are gaining interest in this regard. However, the challenges brought by NILM datasets and the non-availability of common experimental guidelines tend to compromise comparison, research transparency and replicability. The limited adoption of efficient research instruments and a lack of best practices guidelines contribute in huge part to this problem, where no features, encouraging standardised formats for benchmarking and results sharing, are offered. To address these issues, we first present a brief overview of recent best practices for Deep Learning (DL) and highlight how deep NILM research can benefit from these practices. Furthermore, we suggest a novel open-source toolkit leveraging these practices: Deep-NILMTK. The proposed toolkit offers a common testing bed for NILM algorithms independently of the underlying deep learning framework with a modular NILM pipeline that can easily be customised. Furthermore, Deep-NILMTK introduces the concept of Experiment Templating to offer pre-designed experiments allowing to enhance research efficiency. Leveraging this concept and DL best practices, we present a case-study of creating an online NILM benchmark repository along with the corresponding documentation.

  @article{0f4de0c68537cee801853a91a83203c9,
  author = {Bousbiat, Hafsa and Faustine, Anthony and Klemenjak, Christoph and Pereira, Lucas and Elmenreich, Wilfried},
  title = {{Unlocking the Full Potential of Neural NILM: On Automation, Hyperparameters \& Modular Pipelines}},
  journal = {IEEE Transactions on Industrial Informatics },
  year = {2022},
  abstract = {Non-Intrusive Load Monitoring (NILM) techniques are increasingly becoming a key instrument for identifying the power consumption of individual appliances based on a single metering point. Particularly Deep learning models are gaining interest in this regard. However, the challenges brought by NILM datasets and the non-availability of common experimental guidelines tend to compromise comparison, research transparency and replicability. The limited adoption of efficient research instruments and a lack of best practices guidelines contribute in huge part to this problem, where no features, encouraging standardised formats for benchmarking and results sharing, are offered. To address these issues, we first present a brief overview of recent best practices for Deep Learning (DL) and highlight how deep NILM research can benefit from these practices. Furthermore, we suggest a novel open-source toolkit leveraging these practices: Deep-NILMTK. The proposed toolkit offers a common testing bed for NILM algorithms independently of the underlying deep learning framework with a modular NILM pipeline that can easily be customised. Furthermore, Deep-NILMTK introduces the concept of Experiment Templating to offer pre-designed experiments allowing to enhance research efficiency. Leveraging this concept and DL best practices, we present a case-study of creating an online NILM benchmark repository along with the corresponding documentation.},
  doi = {10.1109/TII.2022.3206322},
  pages = {1--9},
  month = {9},
  url = {https://ieeexplore.ieee.org/abstract/document/9889174},
  }

• K. Lite and B. Rinner, “Information-Seeking in Localization and Mission Planning of Multi-Agent Systems,” in IEEE 5th International Conference on Multimedia Information Processing and Retrieval (IEEE MIPR 2022), 2022. doi:10.1109/MIPR54900.2022.00021
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4835dcf5501835f8fb62301d8,
  author = {Lite, Kyriakos and Rinner, Bernhard},
  title = {{Information-Seeking in Localization and Mission Planning of Multi-Agent Systems}},
  booktitle = {IEEE 5th International Conference on Multimedia Information Processing and Retrieval (IEEE MIPR 2022)},
  year = {2022},
  doi = {10.1109/MIPR54900.2022.00021},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9874657},
  }

• R. Ahmad, R. Wazirali, T. Abu-Ain, and T. A. Almohamad, “Adaptive Trust-Based Framework for Securing and Reducing Cost in Low-Cost 6LoWPAN Wireless Sensor Networks,” Applied Sciences, vol. 12, iss. 17, 2022. doi:10.3390/app12178605
  [BibTeX] [Abstract]
  

  Wireless Sensor Networks (WSNs) are the core of the Internet of Things (IoT) technology, as they will be used in various applications in the near future. The issue of security and power consumption is still one of the most important challenges facing this type of network. 6LoWPAN protocol was developed to meet these challenges in networks with limited power and resources. The 6LoWPAN uses a hierarchical topology and the traditional method of encryption and key management, keeping power consumption levels high. Therefore, in this paper, a technique has been developed that helps in balancing security and energy consumption by exploiting the Trust technique between low-cost WSN nodes called Trust-Cluster Head (Trust-CH). Trust between nodes is built by monitoring the behavior of packet transmission, the number of repetitions and the level of security. The Trust-CH model provides a dynamic multi-level encryption system that depends on the level of Trust between WSN nodes. It also proposes a dynamic clustering system based on the absolute-trust level in the mobile node environment to minimize power consumption. Along with a set of performance metrics (i.e., power consumption and network lifetime), the Cooja simulator was used to evaluate the Trust-CH model. The results were compared to a static symmetric encryption model together with various models from previous studies. It has been proven that the proposed model increases the network lifetime by 40\% compared to previous studies, as well as saves as much as 28\% power consumption in the case of using a static encryption model. While maintaining the proposed model’s resistance to many malicious attacks on the network.

  @article{0f4de0c7859d845b0185a1be27bc073f,
  author = {Ahmad, Rami and Wazirali, Raniyah and Abu-Ain, Tarik and Almohamad, Tarik Adnan},
  title = {{Adaptive Trust-Based Framework for Securing and Reducing Cost in Low-Cost 6LoWPAN Wireless Sensor Networks}},
  journal = {Applied Sciences},
  year = {2022},
  abstract = {Wireless Sensor Networks (WSNs) are the core of the Internet of Things (IoT) technology, as they will be used in various applications in the near future. The issue of security and power consumption is still one of the most important challenges facing this type of network. 6LoWPAN protocol was developed to meet these challenges in networks with limited power and resources. The 6LoWPAN uses a hierarchical topology and the traditional method of encryption and key management, keeping power consumption levels high. Therefore, in this paper, a technique has been developed that helps in balancing security and energy consumption by exploiting the Trust technique between low-cost WSN nodes called Trust-Cluster Head (Trust-CH). Trust between nodes is built by monitoring the behavior of packet transmission, the number of repetitions and the level of security. The Trust-CH model provides a dynamic multi-level encryption system that depends on the level of Trust between WSN nodes. It also proposes a dynamic clustering system based on the absolute-trust level in the mobile node environment to minimize power consumption. Along with a set of performance metrics (i.e., power consumption and network lifetime), the Cooja simulator was used to evaluate the Trust-CH model. The results were compared to a static symmetric encryption model together with various models from previous studies. It has been proven that the proposed model increases the network lifetime by 40\% compared to previous studies, as well as saves as much as 28\% power consumption in the case of using a static encryption model. While maintaining the proposed model’s resistance to many malicious attacks on the network.},
  doi = {10.3390/app12178605},
  volume = {12},
  number = {17},
  month = {8},
  }

• N. A. Letizia and A. M. Tonello, “Discriminative Mutual Information Estimation for the Design of Channel Capacity Driven Autoencoders,” in Fifth International Balkan Conference on Communications and Networking – Balkancom 2022, Piscataway (NJ), 2022. doi:10.1109/BalkanCom55633.2022.9900818
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c783c107e50183c1fdfb5b00ac,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Discriminative Mutual Information Estimation for the Design of Channel Capacity Driven Autoencoders}},
  booktitle = {Fifth International Balkan Conference on Communications and Networking - Balkancom 2022},
  year = {2022},
  doi = {10.1109/BalkanCom55633.2022.9900818},
  address = {Piscataway (NJ)},
  month = {8},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9900818},
  }

• P. Valet, D. Schwingshackl, U. Gaier, and A. M. Tonello, “A Model Based Approach Digital Pre-Distortion Method for Current-Steering Digital-to-Analog Converters,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 69, iss. 11, p. 4583–4595, 2022. doi:10.1109/TCSI.2022.3198233
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a novel static digital pre-distortion (DPD) method for a current-steering digital-to-analog converter (CS-DAC). The proposed method utilizes the knowledge of the current cell array architecture to calculate the static mismatch currents of the cells. The mismatch values are stored in memory and added to the original input code to generate the new pre-distorted input word. The converter corrects the static error with its own current cells without incorporating an additional calibration DAC (CALDAC) or programmable current sources. This results in a reduction in area, power and simulation run times because of the simpler circuit design. An Overflow-Cell-Selection (OCS) is introduced as a novel solution to further enhance the static linearity of the converter. It also can be implemented as a software solution for already existing DAC designs which do not have an integrated DPD and lab/measurement equipment (e.g., arbitrary wave generator (AWG)). This poses as a strong differentiation factor compared to other state-of-the-art static DPD methods. The evaluation of the proposed DPD is done via simulations in MATLAB and on- chip measurements with a 14-bit CS-DAC in 16 nm. Single tone measurements show a performance gain of the total harmonic distortion (THD) of 12 dB.

  @article{0f4de0c77b09c709017b0b4e013f0143,
  author = {Valet, Patrick and Schwingshackl, David and Gaier, Ulrich and Tonello, Andrea M.},
  title = {{A Model Based Approach Digital Pre-Distortion Method for Current-Steering Digital-to-Analog Converters}},
  journal = {IEEE Transactions on Circuits and Systems I: Regular Papers },
  year = {2022},
  abstract = {This paper presents a novel static digital pre-distortion (DPD) method for a current-steering digital-to-analog converter (CS-DAC). The proposed method utilizes the knowledge of the current cell array architecture to calculate the static mismatch currents of the cells. The mismatch values are stored in memory and added to the original input code to generate the new pre-distorted input word. The converter corrects the static error with its own current cells without incorporating an additional calibration DAC (CALDAC) or programmable current sources. This results in a reduction in area, power and simulation run times because of the simpler circuit design. An Overflow-Cell-Selection (OCS) is introduced as a novel solution to further enhance the static linearity of the converter. It also can be implemented as a software solution for already existing DAC designs which do not have an integrated DPD and lab/measurement equipment (e.g., arbitrary wave generator (AWG)). This poses as a strong differentiation factor compared to other state-of-the-art static DPD methods. The evaluation of the proposed DPD is done via simulations in MATLAB and on- chip measurements with a 14-bit CS-DAC in 16 nm. Single tone measurements show a performance gain of the total harmonic distortion (THD) of 12 dB.},
  doi = {10.1109/TCSI.2022.3198233},
  volume = {69},
  number = {11},
  pages = {4583--4595},
  month = {8},
  url = {https://ieeexplore.ieee.org/document/9863633},
  }

• C. Schmidt, J. F. Schmidt, J. L. Figueroa, and M. Crussiere, “Achievable Energy Efficiency in Massive MIMO: Impact of DAC Resolution and PAPR Reduction for Practical Network Topologies at mm-waves,” IEEE Communications Letters, 2022. doi:10.1109/LCOMM.2022.3198016
  [BibTeX] [Abstract]
  

  This paper explores key parameters of a massive MIMO system and their impact on energy efficiency at transmission. In particular, the effect of the digital to analog converter resolution and peak to average power ratio reduction techniques are addressed, in the context of practical user location distributions for both line and non line of sight channels. Results show interesting design trade-offs, and highlight the relevance of an accurate model for the user locations for the correct evaluation of the achievable performance.

  @article{0f4de0c58339c2fd01833a860f970005,
  author = {Schmidt, Christian and Schmidt, Jorge Friedrich and Figueroa, José L. and Crussiere, Matthieu},
  title = {{Achievable Energy Efficiency in Massive MIMO: Impact of DAC Resolution and PAPR Reduction for Practical Network Topologies at mm-waves}},
  journal = {IEEE Communications Letters},
  year = {2022},
  abstract = {This paper explores key parameters of a massive MIMO system and their impact on energy efficiency at transmission. In particular, the effect of the digital to analog converter resolution and peak to average power ratio reduction techniques are addressed, in the context of practical user location distributions for both line and non line of sight channels. Results show interesting design trade-offs, and highlight the relevance of an accurate model for the user locations for the correct evaluation of the achievable performance.},
  doi = {10.1109/LCOMM.2022.3198016},
  month = {8},
  }

• H. Beyoglu, S. M. Weiss, and B. Rinner, “Multi-Agent Path Planning and Trajectory Generation for Confined Environments,” in Proceedings of the 2022 International Conference on Unmanned Aircraft Systems (ICUAS), Piscataway (NJ), 2022, p. 655–663. doi:10.1109/ICUAS54217.2022.9836193
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c582f1aa390182f3b3a6a6014b,
  author = {Beyoglu, Hikmet and Weiss, Stephan Michael and Rinner, Bernhard},
  title = {{Multi-Agent Path Planning and Trajectory Generation for Confined Environments}},
  booktitle = {Proceedings of the 2022 International Conference on Unmanned Aircraft Systems (ICUAS)},
  year = {2022},
  doi = {10.1109/ICUAS54217.2022.9836193},
  pages = {655--663},
  address = {Piscataway (NJ)},
  month = {7},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9836193},
  }

• J. Scherer, A. P. Schoellig, and B. Rinner, “Min-Max Vertex Cycle Covers With Connectivity Constraints for Multi-Robot Patrolling,” IEEE Robotics and Automation Letters, vol. 7, iss. 4, p. 10152–10159, 2022. doi:10.1109/LRA.2022.3193242
  [BibTeX] [Download PDF]

  @article{0f4de0c582f1aa390182f3a0522800fa,
  author = {Scherer, Jürgen and Schoellig, Angela P. and Rinner, Bernhard},
  title = {{Min-Max Vertex Cycle Covers With Connectivity Constraints for Multi-Robot Patrolling}},
  journal = {IEEE Robotics and Automation Letters},
  year = {2022},
  doi = {10.1109/LRA.2022.3193242},
  volume = {7},
  number = {4},
  pages = {10152--10159},
  month = {7},
  url = {https://ieeexplore.ieee.org/document/9837406},
  }

• M. Umlauft, M. M. Schranz, and W. Elmenreich, “SwarmFabSim: A Simulation Framework for Bottom-up Optimization in Flexible Job-Shop Scheduling Using NetLogo,” in Proceedings of the 12th International Conference on Simulation and Modeling Methodologies, Technologies and Applications – SIMULTECH, Setubal, 2022, p. 271–279. doi:10.5220/0011274700003274
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c6825c516a01825e735c4e005c,
  author = {Umlauft, Martina and Schranz, Melanie Marianne and Elmenreich, Wilfried},
  title = {{SwarmFabSim: A Simulation Framework for Bottom-up Optimization in Flexible Job-Shop Scheduling Using NetLogo}},
  booktitle = {Proceedings of the 12th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - SIMULTECH},
  year = {2022},
  doi = {10.5220/0011274700003274},
  pages = {271--279},
  address = {Setubal},
  month = {7},
  publisher = {SciTePress Digital Library},
  url = {https://mobile.aau.at/publications/umlauft-2022-simultech-swarmfabsim.pdf},
  }

• R. Alshwaiyat, R. Wazirali, and T. Abu-Ain, “Machine Learning for Wireless Sensor Networks Security: An Overview of Challenges and Issues,” Sensors, 2022. doi:10.3390/s22134730
  [BibTeX] [Abstract] [Download PDF]
  

  Energy and security are major challenges in a wireless sensor network, and they work oppositely. As security complexity increases, battery drain will increase. Due to the limited power in wireless sensor networks, options to rely on the security of ordinary protocols embodied in encryption and key management are futile due to the nature of communication between sensors and the ever-changing network topology. Therefore, machine learning algorithms are one of the proposed solutions for providing security services in this type of network by including monitoring and decision intelligence. Machine learning algorithms present additional hurdles in terms of training and the amount of data required for training. This paper provides a convenient reference for wireless sensor network infrastructure and the security challenges it faces. It also discusses the possibility of benefiting from machine learning algorithms by reducing the security costs of wireless sensor networks in several domains; in addition to the challenges and proposed solutions to improving the ability of sensors to identify threats, attacks, risks, and malicious nodes through their ability to learn and self-development using machine learning algorithms. Furthermore, this paper discusses open issues related to adapting machine learning algorithms to the capabilities of sensors in this type of network.

  @article{0f4de0c482ec82f10182ee1acb120073,
  author = {Alshwaiyat, Rami and Wazirali, Raniyah and Abu-Ain, Tarik},
  title = {{Machine Learning for Wireless Sensor Networks Security: An Overview of Challenges and Issues}},
  journal = {Sensors},
  year = {2022},
  abstract = {Energy and security are major challenges in a wireless sensor network, and they work oppositely. As security complexity increases, battery drain will increase. Due to the limited power in wireless sensor networks, options to rely on the security of ordinary protocols embodied in encryption and key management are futile due to the nature of communication between sensors and the ever-changing network topology. Therefore, machine learning algorithms are one of the proposed solutions for providing security services in this type of network by including monitoring and decision intelligence. Machine learning algorithms present additional hurdles in terms of training and the amount of data required for training. This paper provides a convenient reference for wireless sensor network infrastructure and the security challenges it faces. It also discusses the possibility of benefiting from machine learning algorithms by reducing the security costs of wireless sensor networks in several domains; in addition to the challenges and proposed solutions to improving the ability of sensors to identify threats, attacks, risks, and malicious nodes through their ability to learn and self-development using machine learning algorithms. Furthermore, this paper discusses open issues related to adapting machine learning algorithms to the capabilities of sensors in this type of network.},
  doi = {10.3390/s22134730},
  month = {6},
  url = {https://www.mdpi.com/1424-8220/22/13/4730},
  }

• M. Rahmani and B. Rinner, “Towards Self-Awareness in Multi-Robot Systems,” in Proceedings of the Austrian Robotics Workshop 2022, 2022, p. 89–90.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c582f1aa390182f3c4fe170193,
  author = {Rahmani, Mohammad and Rinner, Bernhard},
  title = {{Towards Self-Awareness in Multi-Robot Systems}},
  booktitle = {Proceedings of the Austrian Robotics Workshop 2022},
  year = {2022},
  pages = {89--90},
  month = {6},
  url = {https://www.joanneum.at/fileadmin/ROBOTICS/ARW\_Proceedings/2022\_ARW-Proceedings.pdf},
  }

• F. Weder, R. Hübner, W. Elmenreich, R. Sposato, and S. Mertl, “Re-Framing Sustainability in a Pandemic,” Journal for Sustainbility Research, 2022. doi:10.20900/jsr20220006
  [BibTeX] [Abstract]
  

  The Covid-19 pandemic has challenged global health and equity and reinforced intergenerational and ecological problems. Future orientation focuses primarily on existing global efforts (Earth Charter, UN Millennium Declaration, SDGs, etc.), however, there is a lack of concepts and empirical studies looking at the potential of a vision of and for the future influencing individual behavior, amplifying moral evaluations of everyday behavior, and allocating responsibility and agency. The pilot study presented assumes that sustainability as a normative framework has the potential to influence social practices on all levels (institutionalized to individual) and was aimed to explore the impact of Covid-related behavior changes on envisioned futures and the willingness to take responsibility for societal transformation processes.

  @article{0f4de0c782572b180182589759f60018,
  author = {Weder, Franzisca and Hübner, Renate and Elmenreich, Wilfried and Sposato, Robert and Mertl, Stefanie},
  title = {{Re-Framing Sustainability in a Pandemic}},
  journal = {Journal for Sustainbility Research },
  year = {2022},
  abstract = {The Covid-19 pandemic has challenged global health and equity and reinforced intergenerational and ecological problems. Future orientation focuses primarily on existing global efforts (Earth Charter, UN Millennium Declaration, SDGs, etc.), however, there is a lack of concepts and empirical studies looking at the potential of a vision of and for the future influencing individual behavior, amplifying moral evaluations of everyday behavior, and allocating responsibility and agency. The pilot study presented assumes that sustainability as a normative framework has the potential to influence social practices on all levels (institutionalized to individual) and was aimed to explore the impact of Covid-related behavior changes on envisioned futures and the willingness to take responsibility for societal transformation processes.},
  doi = {10.20900/jsr20220006},
  month = {6},
  }

• T. Haspl, M. Rathmair, M. Papa, M. Hofbaur, and A. M. Tonello, “Software Toolchain for Modeling and Transforming Robotic Workflows into Formally Verifiable Model Representations,” in Austrian Robotics Workshop 2022, 2022, p. 116–121.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c68537cee8018539ba93b702af,
  author = {Haspl, Thomas and Rathmair, Michael and Papa, Maximilian and Hofbaur, Michael and Tonello, Andrea M.},
  title = {{Software Toolchain for Modeling and Transforming Robotic Workflows into Formally Verifiable Model Representations}},
  booktitle = {Austrian Robotics Workshop 2022},
  year = {2022},
  pages = {116--121},
  month = {5},
  url = {https://www.joanneum.at/fileadmin/ROBOTICS/ARW\_Proceedings/2022\_ARW-Proceedings.pdf},
  }

• R. Agyeman and B. Rinner, “Resource-efficient Pervasive Smart Camera Networks,” in IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom), 2022, p. 503–508. doi:10.1109/PerComWorkshops53856.2022.9767290
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c582195f0601821a795877001d,
  author = {Agyeman, Rockson and Rinner, Bernhard},
  title = {{Resource-efficient Pervasive Smart Camera Networks}},
  booktitle = {IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)},
  year = {2022},
  doi = {10.1109/PerComWorkshops53856.2022.9767290},
  pages = {503--508},
  month = {5},
  publisher = {IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)},
  url = {https://ieeexplore.ieee.org/abstract/document/9767290},
  }

• K. A. Youssefi Darmian, M. Rouhani, H. Rajabi Mashhadi, and W. Elmenreich, “A swarm intelligence-based robotic search algorithm integrated with game theory,” Applied Soft Computing, vol. 122, 2022. doi:10.1016/j.asoc.2022.108873
  [BibTeX] [Abstract] [Download PDF]
  

  This paper proposes a novel decentralize and asynchronous swarm robotic search algorithm integrated with game theory to better disperse robots in the environment while crossing obstacles and solving mazes. This prevents early convergence and improves the efficiency of the searches. In the proposed algorithm, individual robots, while searching, play a sequential game at each iteration, and based on that, choose their velocity update rule. The effectiveness of the proposed strategic game is tested in a specially designed framework. As a validation, the introduced algorithm is compared with the state-of-the-art in simple and complex search environments. The results showed that the suggested algorithm outperforms other methods both in search duration and attained path length to the target, and its success rate is equal to the one of state-of-the-art (i.e., 100\% in the conducted experiments). Also, it is shown that the proposed strategic game works well in search environments with different levels of complexity and especially improves search efficiency further in complex environments.

  @article{0f4de0c4825b074601825f4542470007,
  author = {Youssefi Darmian, Khalil Alrahman and Rouhani, Modjtaba and Rajabi Mashhadi, Habib and Elmenreich, Wilfried},
  title = {{A swarm intelligence-based robotic search algorithm integrated with game theory}},
  journal = {Applied Soft Computing},
  year = {2022},
  abstract = {This paper proposes a novel decentralize and asynchronous swarm robotic search algorithm integrated with game theory to better disperse robots in the environment while crossing obstacles and solving mazes. This prevents early convergence and improves the efficiency of the searches. In the proposed algorithm, individual robots, while searching, play a sequential game at each iteration, and based on that, choose their velocity update rule. The effectiveness of the proposed strategic game is tested in a specially designed framework. As a validation, the introduced algorithm is compared with the state-of-the-art in simple and complex search environments. The results showed that the suggested algorithm outperforms other methods both in search duration and attained path length to the target, and its success rate is equal to the one of state-of-the-art (i.e., 100\% in the conducted experiments). Also, it is shown that the proposed strategic game works well in search environments with different levels of complexity and especially improves search efficiency further in complex environments.},
  doi = {10.1016/j.asoc.2022.108873},
  volume = {122},
  month = {4},
  url = {https://www.sciencedirect.com/science/article/abs/pii/S1568494622002551},
  }

• J. Janiszewski, L. Ihde, and W. Elmenreich, Gamedesign for Dummies Junior, Wiley VCH, 2022.
  [BibTeX] [Abstract]
  

  Mit der Programmiersprache Scratch ist es sehr einfach, die Zutaten für ein Spiel zu erstellen. Mit Scratch kannst du zeichnen, animieren, musizieren, programmieren, Sounds aufnehmen und Texte als Sprache ausgeben. Wie du dann daraus ein cooles Spiel machst, erklärt dir dieses Buch. In den Kapiteln werden verschiedene Projekte beschrieben, die du nur nachmachen musst. Nichts kann schief gehen. Schritt für Schritt steigst du immer tiefer ins Programmieren und Designen ein. Und je mehr Tipps und Tricks du kennst, desto einfacher kannst du deine eigenen Ideen umsetzen.

  @book{0f4de0c587c5a0090187c8e43027016f,
  author = {Janiszewski, Johanna and Ihde, Lisa and Elmenreich, Wilfried},
  title = {{Gamedesign for Dummies Junior}},
  publisher = {Wiley VCH},
  year = {2022},
  abstract = {Mit der Programmiersprache Scratch ist es sehr einfach, die Zutaten für ein Spiel zu erstellen. Mit Scratch kannst du zeichnen, animieren, musizieren, programmieren, Sounds aufnehmen und Texte als Sprache ausgeben. Wie du dann daraus ein cooles Spiel machst, erklärt dir dieses Buch. In den Kapiteln werden verschiedene Projekte beschrieben, die du nur nachmachen musst. Nichts kann schief gehen. Schritt für Schritt steigst du immer tiefer ins Programmieren und Designen ein. Und je mehr Tipps und Tricks du kennst, desto einfacher kannst du deine eigenen Ideen umsetzen.},
  month = {4},
  isbn = {9783527718757},
  }

• F. Weder, J. Yarnold, S. Mertl, R. Hübner, W. Elmenreich, and R. G. Sposato, “Social Learning of Sustainability in a Pandemic—Changes to Sustainability Understandings, Attitudes, and Behaviors during the Global Pandemic in a Higher Education Setting,” Sustainability, vol. 14, iss. 6, p. 1–18, 2022. doi:10.3390/su14063416
  [BibTeX] [Abstract] [Download PDF]
  

  When people learn from each other and change their behavior accordingly, this is called social learning. COVID-19 not only taught us new habits to limit contagion, imposed restrictions also limited people’s everyday practices and behavior. Our study aims to analyze how (much) the pandemic may have incidentally fostered social learning of sustainability (SLS), representing a shift from rule-based behavior and forced behavior changes to more associative and potentially long-lasting sustainable behavior. To answer this question, we analyzed data from two mixed-method surveys with which we approached two customized samples in a higher education setting in Australia (n = 100) and Austria (n = 264). The findings show that in a higher education and, specifically, a university context, there are less sustainable practices evaluated as stable and “new normal” than assumed. Still, sustainability is more rule-related and less associative, predominantly in Australia. Nevertheless, a certain degree of awareness of what sustainable practices are can be observed mainly in Austria. As a broader implication, the study at hand leads to the conclusion that through COVID-19, sustainability at least became more tangible. Furthermore, universities as a specific institution have the potential to put sustainability higher on their agenda and take responsibility for social change. In the conclusion and outlook of the paper, limitations of the study as well as future research potential on social learning processes for sustainable development are presented and discussed.

  @article{0f4de0c680166275018018bb948d0121,
  author = {Weder, Franzisca and Yarnold, Jennifer and Mertl, Stefanie and Hübner, Renate and Elmenreich, Wilfried and Sposato, Robert Gennaro},
  title = {{Social Learning of Sustainability in a Pandemic—Changes to Sustainability Understandings, Attitudes, and Behaviors during the Global Pandemic in a Higher Education Setting}},
  journal = {Sustainability},
  year = {2022},
  abstract = {When people learn from each other and change their behavior accordingly, this is called social learning. COVID-19 not only taught us new habits to limit contagion, imposed restrictions also limited people’s everyday practices and behavior. Our study aims to analyze how (much) the pandemic may have incidentally fostered social learning of sustainability (SLS), representing a shift from rule-based behavior and forced behavior changes to more associative and potentially long-lasting sustainable behavior. To answer this question, we analyzed data from two mixed-method surveys with which we approached two customized samples in a higher education setting in Australia (n = 100) and Austria (n = 264). The findings show that in a higher education and, specifically, a university context, there are less sustainable practices evaluated as stable and “new normal” than assumed. Still, sustainability is more rule-related and less associative, predominantly in Australia. Nevertheless, a certain degree of awareness of what sustainable practices are can be observed mainly in Austria. As a broader implication, the study at hand leads to the conclusion that through COVID-19, sustainability at least became more tangible. Furthermore, universities as a specific institution have the potential to put sustainability higher on their agenda and take responsibility for social change. In the conclusion and outlook of the paper, limitations of the study as well as future research potential on social learning processes for sustainable development are presented and discussed.},
  doi = {10.3390/su14063416},
  volume = {14},
  number = {6},
  pages = {1--18},
  month = {3},
  url = {https://mdpi-res.com/d\_attachment/sustainability/sustainability-14-03416/article\_deploy/sustainability-14-03416.pdf},
  }

• H. K. Shin, R. Agyeman, M. Rafiq, M. C. Chang, and G. S. Choi, “Automated segmentation of chronic stroke lesion using efficient U-Net architecture,” Biocybernetics and Biomedical Engineering, vol. 42, iss. 1, p. 285–294, 2022. doi:10.1016/j.bbe.2022.01.002
  [BibTeX] [Abstract] [Download PDF]
  

  Stroke is the most common neurological condition worldwide and causes various sequelae, such as motor impairment, cognitive deficit, and language problems. Typically, a radiologist segments the lesion directly. This is time-consuming and relies on the subjective perception of a specialist, so studies that automatically segment stroke lesions are very important in this regard. Although recent medical image segmentation studies have achieved great results using deep learning techniques, there are still many trainable parameters, and long-term dependence problems still exist. To solve these problems, we propose an efficient U-Net (e-UNet) for segmenting chronic stroke lesions. The proposed e-UNet incorporates a depth-wise convolution-based e-block designed to efficiently reduce the trainable parameters. A global-feature attention block (GA-block) improves segmentation performance by capturing global features between the encoder and decoder. The proposed e-UNet reduces the number of trainable parameters by 3.75 times compared to U-Net. We used the Anatomical Tracings of Lesions After Stroke (ATLAS) dataset to evaluate e-UNet. The lesions segmentation performance of the proposed e-UNet achieved 59.2\%, 45.5\%, 77.7\%, 52.3\%, and 52.3\% in Dice, IoU, precision, and recall, respectively, for the test dataset (8,694 2D images).

  @article{0f4de0c7854c685a01854e199f4a0007,
  author = {Shin, Hyun Kwang and Agyeman, Rockson and Rafiq, Muhammad and Chang, Min Cheol and Choi, Gyu Sang},
  title = {{Automated segmentation of chronic stroke lesion using efficient U-Net architecture}},
  journal = {Biocybernetics and Biomedical Engineering},
  year = {2022},
  abstract = {Stroke is the most common neurological condition worldwide and causes various sequelae, such as motor impairment, cognitive deficit, and language problems. Typically, a radiologist segments the lesion directly. This is time-consuming and relies on the subjective perception of a specialist, so studies that automatically segment stroke lesions are very important in this regard. Although recent medical image segmentation studies have achieved great results using deep learning techniques, there are still many trainable parameters, and long-term dependence problems still exist. To solve these problems, we propose an efficient U-Net (e-UNet) for segmenting chronic stroke lesions. The proposed e-UNet incorporates a depth-wise convolution-based e-block designed to efficiently reduce the trainable parameters. A global-feature attention block (GA-block) improves segmentation performance by capturing global features between the encoder and decoder. The proposed e-UNet reduces the number of trainable parameters by 3.75 times compared to U-Net. We used the Anatomical Tracings of Lesions After Stroke (ATLAS) dataset to evaluate e-UNet. The lesions segmentation performance of the proposed e-UNet achieved 59.2\%, 45.5\%, 77.7\%, 52.3\%, and 52.3\% in Dice, IoU, precision, and recall, respectively, for the test dataset (8,694 2D images).},
  doi = {10.1016/j.bbe.2022.01.002},
  volume = {42},
  number = {1},
  pages = {285--294},
  month = {2},
  url = {https://doi.org/10.1016/j.bbe.2022.01.002},
  }

• M. Erol-Kantarci, G. Alexandropoulos, P. Han Joo Chong, A. M. Tonello, and Y. Zhang, “Communications and Computing for Green Industrial IoT and Smart Grids,” IEEE Transactions on Green Communications and Networking, vol. 6, iss. 1, p. 3–5, 2022. doi:10.1109/TGCN.2022.3148566
  [BibTeX] [Abstract] [Download PDF]
  

  With this special issue, the guest editorial team, Drs. Melike Erol-Kantarci, George C. Alexandropoulos, Peter Han Joo Chong, Andrea M. Tonello and Yan Zhang have prepared a selection of excellent articles on novel energy-efficient communication and computing techniques for Industrial IoT (IIoT) and smart grids. The goal of this special issue is to advance and promote significant technological advances in the field. IIoT covers the broad domain of smart grid, smart manufacturing, intelligent transportation and smart cities, and it refers to the combination of IoT technology with big data coming from intelligent processes in those domains. Energy-efficient transmission and processing of this data targets automation, efficiency, and productivity increase. In particular, smart grid can be considered as a typical IIoT example, since it comprises an industrial setting with a large number of IoT devices. Within Green Industrial IoT, smart grid communications, use state-of-the-art communication technologies towards ensuring the reduction of energy consumption, optimal operation of the smart grid, Advanced Metering Infrastructure (AMI), as well as coordination between the different smart grid components from generation to distribution and consumption.

  @article{0f4de0c47e0e7742017e11e4bb4b02b4,
  author = {Erol-Kantarci, Melike and Alexandropoulos, George and Han Joo Chong, Peter and Tonello, Andrea M. and Zhang, Yan},
  title = {{Communications and Computing for Green Industrial IoT and Smart Grids}},
  journal = { IEEE Transactions on Green Communications and Networking},
  year = {2022},
  abstract = {With this special issue, the guest editorial team, Drs. Melike Erol-Kantarci, George C. Alexandropoulos, Peter Han Joo Chong, Andrea M. Tonello and Yan Zhang have prepared a selection of excellent articles on novel energy-efficient communication and computing techniques for Industrial IoT (IIoT) and smart grids. The goal of this special issue is to advance and promote significant technological advances in the field. IIoT covers the broad domain of smart grid, smart manufacturing, intelligent transportation and smart cities, and it refers to the combination of IoT technology with big data coming from intelligent processes in those domains. Energy-efficient transmission and processing of this data targets automation, efficiency, and productivity increase. In particular, smart grid can be considered as a typical IIoT example, since it comprises an industrial setting with a large number of IoT devices. Within Green Industrial IoT, smart grid communications, use state-of-the-art communication technologies towards ensuring the reduction of energy consumption, optimal operation of the smart grid, Advanced Metering Infrastructure (AMI), as well as coordination between the different smart grid components from generation to distribution and consumption.},
  doi = {10.1109/TGCN.2022.3148566},
  volume = {6},
  number = {1},
  pages = {3--5},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/9714454},
  }

• W. Hua, J. Jiang, H. Sun, A. M. Tonello, M. Qadrdan, and J. Wu, “Data-driven prosumer-centric energy scheduling using convolutional neural networks,” Applied Energy, p. 1–14, 2022. doi:10.1016/j.apenergy.2021.118361
  [BibTeX] [Abstract] [Download PDF]
  

  The emerging role of energy prosumers (both producers and consumers) enables a more flexible and localised structure of energy markets. However, it leads to challenges for the energy scheduling of individual prosumers in terms of identifying idiosyncratic pricing patterns, cost-effectively predicting power profiles, and scheduling various scales of generation and consumption sources. To overcome these three challenges, this study proposes a novel data-driven energy scheduling model for an individual prosumer. The pricing patterns of a prosumer are represented by three types of dynamic price elasticities, i.e., the price elasticities of the generation, consumption, and carbon emissions. To improve the computational efficiency and scalability, the heuristic algorithms used to solve the optimisation problems is replaced by the convolutional neural networks which map the pricing patterns to scheduling decisions of a prosumer. The variations of uncertainties caused by the intermittency of renewable energy sources, flexible demand, and dynamic prices are predicted by the developed real-time scenarios selection approach, in which each variation is defined as a scenario. Case studies under various IEEE test distribution systems and uncertain scenarios demonstrate the effectiveness of our proposed energy scheduling model in terms of predicting scheduling decisions in microseconds with high accuracy.

  @article{0f4de0c47e0e7742017e11cf41c90264,
  author = {Hua, Weiqi and Jiang, Jing and Sun, Hongjian and Tonello, Andrea M. and Qadrdan, Meysam and Wu, Jianzhong},
  title = {{Data-driven prosumer-centric energy scheduling using convolutional neural networks}},
  journal = {Applied Energy},
  year = {2022},
  abstract = {The emerging role of energy prosumers (both producers and consumers) enables a more flexible and localised structure of energy markets. However, it leads to challenges for the energy scheduling of individual prosumers in terms of identifying idiosyncratic pricing patterns, cost-effectively predicting power profiles, and scheduling various scales of generation and consumption sources. To overcome these three challenges, this study proposes a novel data-driven energy scheduling model for an individual prosumer. The pricing patterns of a prosumer are represented by three types of dynamic price elasticities, i.e., the price elasticities of the generation, consumption, and carbon emissions. To improve the computational efficiency and scalability, the heuristic algorithms used to solve the optimisation problems is replaced by the convolutional neural networks which map the pricing patterns to scheduling decisions of a prosumer. The variations of uncertainties caused by the intermittency of renewable energy sources, flexible demand, and dynamic prices are predicted by the developed real-time scenarios selection approach, in which each variation is defined as a scenario. Case studies under various IEEE test distribution systems and uncertain scenarios demonstrate the effectiveness of our proposed energy scheduling model in terms of predicting scheduling decisions in microseconds with high accuracy.},
  doi = {10.1016/j.apenergy.2021.118361},
  pages = {1--14},
  month = {2},
  url = {https://www.sciencedirect.com/science/article/pii/S0306261921016044?dgcid=coauthor},
  }

• H. Bousbiat, G. Leitner, and W. Elmenreich, “Ageing Safely in the Digital Era: A New Unobtrusive Activity Monitoring Framework Leveraging on Daily Interactions with Hand-Operated Appliances,” Sensors, vol. 22, iss. 4, p. 1–20, 2022. doi:10.3390/s22041322
  [BibTeX] [Abstract] [Download PDF]
  

  Supporting the elderly to maintain their independence, safety, and well-being through Active Assisted Living (AAL) technologies, is gaining increasing momentum. Recently, Non-intrusive Load Monitoring (NILM) approaches have become the focus of these technologies due to their non-intrusiveness and reduced price. Whilst some research has been carried out in this respect; it still is challenging to design systems considering the heterogeneity and complexity of daily routines. Furthermore, scholars gave little attention to evaluating recent deep NILM models in AAL applications. We suggest a new interactive framework for activity monitoring based on custom user-profiles and deep NILM models to address these gaps. During evaluation, we consider four different deep NILM models. The proposed contribution is further assessed on two households from the REFIT dataset for a period of one year, including the influence of NILM on activity monitoring. To the best of our knowledge, the current study is the first to quantify the error propagated by a NILM model on the performance of an AAL solution. The results achieved are promising, particularly when considering the UNET-NILM model, a multi-task convolutional neural network for load disaggregation, that revealed a deterioration of only 10\% in the f1-measure of the framework’s overall performance.

  @article{0f4de0c7801662b101801808d96f000f,
  author = {Bousbiat, Hafsa and Leitner, Gerhard and Elmenreich, Wilfried},
  title = {{Ageing Safely in the Digital Era: A New Unobtrusive Activity Monitoring Framework Leveraging on Daily Interactions with Hand-Operated Appliances}},
  journal = {Sensors},
  year = {2022},
  abstract = {Supporting the elderly to maintain their independence, safety, and well-being through Active Assisted Living (AAL) technologies, is gaining increasing momentum. Recently, Non-intrusive Load Monitoring (NILM) approaches have become the focus of these technologies due to their non-intrusiveness and reduced price. Whilst some research has been carried out in this respect; it still is challenging to design systems considering the heterogeneity and complexity of daily routines. Furthermore, scholars gave little attention to evaluating recent deep NILM models in AAL applications. We suggest a new interactive framework for activity monitoring based on custom user-profiles and deep NILM models to address these gaps. During evaluation, we consider four different deep NILM models. The proposed contribution is further assessed on two households from the REFIT dataset for a period of one year, including the influence of NILM on activity monitoring. To the best of our knowledge, the current study is the first to quantify the error propagated by a NILM model on the performance of an AAL solution. The results achieved are promising, particularly when considering the UNET-NILM model, a multi-task convolutional neural network for load disaggregation, that revealed a deterioration of only 10\% in the f1-measure of the framework’s overall performance.},
  doi = {10.3390/s22041322},
  volume = {22},
  number = {4},
  pages = {1--20},
  month = {2},
  url = {https://mdpi-res.com/d\_attachment/sensors/sensors-22-01322/article\_deploy/sensors-22-01322-v2.pdf},
  }

2021

• N. A. Letizia and A. M. Tonello, “Capacity Learning for Communication Systems over Power Lines,” in IEEE International Symposium on Power Line Communications – ISPLC 2021, Piscataway (NJ), 2021. doi:10.1109/ISPLC52837.2021.9628415
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77b09c709017b0b1940ba0063,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Capacity Learning for Communication Systems over Power Lines}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2021},
  year = {2021},
  doi = {10.1109/ISPLC52837.2021.9628415},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/abstract/document/9628415},
  }

• F. Marcuzzi, A. M. Tonello, and C. Lavenu, “Data Analytics in G3-PLC Deployments for Coverage Prediction,” in IEEE International Symposium on Power Line Communications – ISPLC 2021, Piscataway (NJ), 2021, p. 114–119. doi:10.1109/ISPLC52837.2021.9628631
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77b09c709017b0b143df10040,
  author = {Marcuzzi, Francesco and Tonello, Andrea M. and Lavenu, Cedric},
  title = {{Data Analytics in G3-PLC Deployments for Coverage Prediction}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2021},
  year = {2021},
  doi = {10.1109/ISPLC52837.2021.9628631},
  pages = {114--119},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9628631},
  }

• V. Korzhun and A. M. Tonello, “Pilot-Free Channel Tracking for In-Band Full-Duplex Broadband Power Line Communications,” in IEEE International Symposium on Power Line Communications – ISPLC 2021, Piscataway (NJ), 2021, p. 37–42. doi:10.1109/ISPLC52837.2021.9628466
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77b09c709017b0b108c320026,
  author = {Korzhun, Vitali and Tonello, Andrea M.},
  title = {{Pilot-Free Channel Tracking for In-Band Full-Duplex Broadband Power Line Communications}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2021},
  year = {2021},
  doi = {10.1109/ISPLC52837.2021.9628466},
  pages = {37--42},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9628466},
  }

• K. Chen-Hu, M. J. Fernandez-Getino Garcia, A. M. Tonello, and A. Garcia Armada, “Low-Complexity Power Allocation in Pilot-Pouring Superimposed-Training Over CB-FMT,” IEEE Transactions on Vehicular Technology, vol. 70, iss. 12, p. 13010–13021, 2021.
  [BibTeX] [Abstract] [Download PDF]
  

  Pilot-pouring superimposed training (PPST) is a novel channel estimation technique specially designed for cyclic block filtered multi-tone (CB-FMT), where the pilot symbols are poured into the subcarriers taking advantage of the power left unused by the data symbols. Hence, since this technique is based on superimposed training (ST) principles, the data rate is not reduced, unlike the pilot symbol assisted modulation (PSAM). Besides, it exploits a weighted average at the receiver side that is capable of minimizing the mean squared error (MSE) of the channel estimation, and then enhancing the performance of the system. However, the existing proposal on PPST is limited to the minimization of the MSE to improve channel estimation for a given power allocation factor, without solving the joint optimization of channel estimation and data detection procedures. With this aim, this work addresses the whole problem to reach the best performance for both tasks, thus taking into account also the power allocation factor in the opt where the pilot symbols are poured into the subcarriers taking advantage of the power left unused by the data symbols. Hence, since this technique is based on superimposed training (ST) principles, the data rate is not reduced, unlike the pilot symbol assisted modulation (PSAM). Besides, it exploits a weighted average at the receiver side that is capable of minimizing the mean squared error (MSE) of the channel estimation, and then enhancing the performance of the system. However, the existing proposal on PPST is limited to the minimization of the MSE to improve channel estimation for a given power allocation factor, without solving the joint optimization of channel estimation and data detection procedures. With this aim, this work addresses the whole problem to reach the best performance for both tasks, thus taking into account also the power allocation factor in the optimization process, where the spectral efficiency must be maximized through the signal-to-interference plus noise ratio (SINR). Two optimization approaches are proposed, where the first one, referred as pilot-pouring optimization (PPO), is focused on performance at the expense of a high complexity, while the second one, denoted as low-complexity PPO (LPPO), is able to trade-off between performance and execution time. Numerical results are provided in order to show the validity of our proposal, where the different optimization problems are compared in terms of SINR and execution time.

  @article{0f4de0c77b09c709017b0b526ed10161,
  author = {Chen-Hu, Kun and Fernandez-Getino Garcia, Maria Julia and Tonello, Andrea M. and Garcia Armada, Ana},
  title = {{Low-Complexity Power Allocation in Pilot-Pouring Superimposed-Training Over CB-FMT}},
  journal = {IEEE Transactions on Vehicular Technology},
  year = {2021},
  abstract = {Pilot-pouring superimposed training (PPST) is a novel channel estimation technique specially designed for cyclic block filtered multi-tone (CB-FMT), where the pilot symbols are poured into the subcarriers taking advantage of the power left unused by the data symbols. Hence, since this technique is based on superimposed training (ST) principles, the data rate is not reduced, unlike the pilot symbol assisted modulation (PSAM). Besides, it exploits a weighted average at the receiver side that is capable of minimizing the mean squared error (MSE) of the channel estimation, and then enhancing the performance of the system. However, the existing proposal on PPST is limited to the minimization of the MSE to improve channel estimation for a given power allocation factor, without solving the joint optimization of channel estimation and data detection procedures. With this aim, this work addresses the whole problem to reach the best performance for both tasks, thus taking into account also the power allocation factor in the opt where the pilot symbols are poured into the subcarriers taking advantage of the power left unused by the data symbols. Hence, since this technique is based on superimposed training (ST) principles, the data rate is not reduced, unlike the pilot symbol assisted modulation (PSAM). Besides, it exploits a weighted average at the receiver side that is capable of minimizing the mean squared error (MSE) of the channel estimation, and then enhancing the performance of the system. However, the existing proposal on PPST is limited to the minimization of the MSE to improve channel estimation for a given power allocation factor, without solving the joint optimization of channel estimation and data detection procedures. With this aim, this work addresses the whole problem to reach the best performance for both tasks, thus taking into account also the power allocation factor in the optimization process, where the spectral efficiency must be maximized through the signal-to-interference plus noise ratio (SINR). Two optimization approaches are proposed, where the first one, referred as pilot-pouring optimization (PPO), is focused on performance at the expense of a high complexity, while the second one, denoted as low-complexity PPO (LPPO), is able to trade-off between performance and execution time. Numerical results are provided in order to show the validity of our proposal, where the different optimization problems are compared in terms of SINR and execution time.},
  volume = {70},
  number = {12},
  pages = {13010--13021},
  month = {12},
  url = {https://ieeexplore.ieee.org/document/9591446/keywords},
  }

• A. M. Tonello, N. A. Letizia, and M. De Piante, “Learning the Impedance Entanglement for Wireline Data Communication,” in Fourth International Balkan Conference on Communications and Networking – Balkancom 2021, Piscataway (NJ), 2021. doi:10.1109/BalkanCom53780.2021.9593164
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77b09c709017b0b1c94c9007d,
  author = {Tonello, Andrea M. and Letizia, Nunzio Alexandro and De Piante, Marco},
  title = {{Learning the Impedance Entanglement for Wireline Data Communication}},
  booktitle = {Fourth International Balkan Conference on Communications and Networking - Balkancom 2021},
  year = {2021},
  doi = {10.1109/BalkanCom53780.2021.9593164},
  address = {Piscataway (NJ)},
  month = {11},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/abstract/document/9593164},
  }

• S. Borkotoky, J. F. Schmidt, U. Schilcher, P. Battula, and S. Rathi, “Reliability and Energy Consumption of LoRa With Bidirectional Traffic,” IEEE Communications Letters, vol. 25, iss. 11, p. 3743–3747, 2021. doi:10.1109/LCOMM.2021.3113134
  [BibTeX] [Abstract] [Download PDF]
  

  We analyze the reliability and energy consumption of uplink message delivery in bidirectional LoRa networks that employ acknowledgements and retransmissions. Our frame-collision analysis with symbol-level timing accuracy shows that the ACKs – introduced to improve reliability – significantly impact the end devices’ power consumption via the collisions they introduce. We demonstrate that a critical design parameter affecting reliability and energy consumption is the maximum number of times an end device retransmits an unacknowledged frame. Our analytical framework can be used to appropriately choose this parameter by taking node density, traffic intensity, target reliability, and the energy budget into account.

  @article{0f4de0c57d4fec98017d5222f33100ca,
  author = {Borkotoky, Siddhartha and Schmidt, Jorge Friedrich and Schilcher, Udo and Battula, Prameela and Rathi, Sonu},
  title = {{Reliability and Energy Consumption of LoRa With Bidirectional Traffic}},
  journal = {IEEE Communications Letters},
  year = {2021},
  abstract = {We analyze the reliability and energy consumption of uplink message delivery in bidirectional LoRa networks that employ acknowledgements and retransmissions. Our frame-collision analysis with symbol-level timing accuracy shows that the ACKs - introduced to improve reliability - significantly impact the end devices’ power consumption via the collisions they introduce. We demonstrate that a critical design parameter affecting reliability and energy consumption is the maximum number of times an end device retransmits an unacknowledged frame. Our analytical framework can be used to appropriately choose this parameter by taking node density, traffic intensity, target reliability, and the energy budget into account.},
  doi = {10.1109/LCOMM.2021.3113134},
  volume = {25},
  number = {11},
  pages = {3743--3747},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/9539190},
  }

• P. Valet, D. Schwingshackl, U. Gaier, and A. M. Tonello, “Static Digital Pre-Distortion Method for High-Speed Current-Steering Digital-to-Analog Converters,” in 29th Austrian Workshop on Microelectronics – Austrochip 2021, 2021, p. 1–4. doi:10.1109/Austrochip53290.2021.9576860
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77b09c709017b0b2106d10098,
  author = {Valet, Patrick and Schwingshackl, David and Gaier, Ulrich and Tonello, Andrea M.},
  title = {{Static Digital Pre-Distortion Method for High-Speed Current-Steering Digital-to-Analog Converters}},
  booktitle = {29th Austrian Workshop on Microelectronics - Austrochip 2021},
  year = {2021},
  doi = {10.1109/Austrochip53290.2021.9576860},
  pages = {1--4},
  month = {10},
  url = {https://ieeexplore.ieee.org/document/9576860},
  }

• J. F. Schmidt, U. Schilcher, A. Vogell, and C. Bettstetter, “Stochastic Switching of Power Levels can Accelerate Self-Organized Synchronization in Wireless Networks with Interference,” in IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2021), Los Alamitos (CA), 2021, p. 81–89. doi:10.1109/ACSOS52086.2021.00026
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c57dc65e83017dc8f791110466,
  author = {Schmidt, Jorge Friedrich and Schilcher, Udo and Vogell, Arke and Bettstetter, Christian},
  title = {{Stochastic Switching of Power Levels can Accelerate Self-Organized Synchronization in Wireless Networks with Interference}},
  booktitle = {IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2021)},
  year = {2021},
  doi = {10.1109/ACSOS52086.2021.00026},
  pages = {81--89},
  address = {Los Alamitos (CA)},
  month = {9},
  publisher = {IEEE Computer Society Press},
  url = {https://ieeexplore.ieee.org/document/9659514},
  }

• U. Schilcher, J. F. Schmidt, A. Vogell, and C. Bettstetter, “Swarmalators with Stochastic Coupling and Memory,” in IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2021), Los Alamitos (CA), 2021, p. 90–99. doi:10.1109/ACSOS52086.2021.00028
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c67c4e372d017c4fc7f3f40020,
  author = {Schilcher, Udo and Schmidt, Jorge Friedrich and Vogell, Arke and Bettstetter, Christian},
  title = {{Swarmalators with Stochastic Coupling and Memory}},
  booktitle = {IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2021)},
  year = {2021},
  doi = {10.1109/ACSOS52086.2021.00028},
  pages = {90--99},
  address = {Los Alamitos (CA)},
  month = {9},
  publisher = {IEEE Computer Society Press},
  url = {https://ieeexplore.ieee.org/document/9659518},
  }

• M. Umlauft and W. Elmenreich, “Ant Algorithms for Routing in Wireless Multi-Hop Networks,” in Ant Colony Optimization, London: IntechOpen, 2021, p. 1–24. doi:10.5772/intechopen.99682
  [BibTeX] [Abstract] [Download PDF]
  

  Wireless Multi-Hop Networks (such as Mobile Ad hoc Networks, Wireless Sensor Networks, and Wireless Mesh Networks) promise improved flexibility, reliability, and performance compared to conventional Wireless Local Area Networks (WLAN) or sensor installations. They can be deployed quickly to provide network connectivity in areas without existing backbone/back-haul infrastructure, such as disaster areas, impassable terrain, or underserved communities. Due to their distributed nature, routing algorithms for these types of networks have to be self-organized. Ant routing is a bio-inspired self-organized method for routing, which is a promising approach for routing in such Wireless Multi-Hop Networks. This chapter provides an introduction to Wireless Multi-Hop Networks, their specific challenges, and an overview of the ant algorithms available for routing in such networks.

  @incollection{0f4de0c77d69abd9017d6c6e127e0019,
  author = {Umlauft, Martina and Elmenreich, Wilfried},
  title = {{Ant Algorithms for Routing in Wireless Multi-Hop Networks}},
  booktitle = { Ant Colony Optimization},
  publisher = {IntechOpen},
  year = {2021},
  abstract = {Wireless Multi-Hop Networks (such as Mobile Ad hoc Networks, Wireless Sensor Networks, and Wireless Mesh Networks) promise improved flexibility, reliability, and performance compared to conventional Wireless Local Area Networks (WLAN) or sensor installations. They can be deployed quickly to provide network connectivity in areas without existing backbone/back-haul infrastructure, such as disaster areas, impassable terrain, or underserved communities. Due to their distributed nature, routing algorithms for these types of networks have to be self-organized. Ant routing is a bio-inspired self-organized method for routing, which is a promising approach for routing in such Wireless Multi-Hop Networks. This chapter provides an introduction to Wireless Multi-Hop Networks, their specific challenges, and an overview of the ant algorithms available for routing in such networks.},
  doi = {10.5772/intechopen.99682},
  pages = {1--24},
  address = {London},
  month = {9},
  url = {https://cdn.intechopen.com/pdfs/78627.pdf},
  }

• V. Delić, A. Mujcic, Z. Babić, D. Bošković, N. Maleš-Ilić, M. Koprivica, D. Žagar, M. Zajc, N. Suljanovic, and A. M. Tonello, “Teaching Methodologies Adopted at the BENEFIT Project for ICT Engineering Education Before and During Covid-19,” in 29th International Electrotechnical and Computer Science Conference (ERK 2020), 2021, p. 405–408.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c6792ffd4e0179314a49d7009e,
  author = {Delić, Vlado and Mujcic, Aljo and Babić, Zdenka and Bošković, Dušanka and Maleš-Ilić, Nataša and Koprivica, Mladen and Žagar, Drago and Zajc, Matej and Suljanovic, Nermin and Tonello, Andrea M.},
  title = {{Teaching Methodologies Adopted at the BENEFIT Project for ICT Engineering Education Before and During Covid-19}},
  booktitle = {29th International Electrotechnical and Computer Science Conference (ERK 2020)},
  year = {2021},
  pages = {405--408},
  month = {9},
  url = {https://erk.fe.uni-lj.si/2020/program.php},
  }

• W. Elmenreich and M. Lux, “Analyzing Usage Patterns in Online Games,” in A Ludic Society, N. Denk, A. Serada, A. Pfeiffer, and T. Wernbacher, Eds., Krems an der Donau: Donau-Universität Krems – Universität für Weiterbildung Krems, 2021, p. 347–359.
  [BibTeX] [Abstract] [Download PDF]
  

  A typical life cycle of an online game is reflected in its usage patterns. A game first builds a user base, then reaches an absolute peak, to then being played by a minimum number of dedicated fans at the end of its life. Apart from this development, extraordinary internal and external events can be observed as changes in usage in games, especially multiplayer and massive multiplayer ones. For the usage of video games, the COVID-19 pandemic has impacted usage as it had on the game business itself. However, research lacks data to investigate these relations further. Usage statistics of games are rarely accessible for researchers. In this paper, we relate usage statistics to viewership and popularity of a game using available data sources like online statistics or activity on Twitch.tv. In a first study, data from the online role-playing game (MMORPG) Eternal Lands is analyzed. Eternal Lands is a free, multiplayer, online game that was created already in 2002. The usage patterns show day/night cycles of players in the prime time of the time zones where most players are located and increased playing activity on weekends. A general trend over time shows a slowly diminishing user base over the years since its introduction. In April 2020, a significant rise in user activities can be observed, attributed to lockdowns in many countries due to the COVID-19 pandemic. This can be attributed to regular players investing more time playing the game during the lockdown and to new or recurring players, who have not played the game intensively before, were looking for a distraction during the lockdown. In a second study, we focus on complementary viewer statistics on the popular game streaming platform Twitch.tv. We can observe that the COVID-19 pandemic impacted the playing time, as mentioned earlier. We relate usage data to viewership and streaming statistics of popular games. With the example of Eternal Lands, being a game that never went viral, we discuss the possibility of approximating a game’s popularity through game streaming and viewership.

  @incollection{0f4de0c77c588461017c5c2b1e3300a1,
  author = {Elmenreich, Wilfried and Lux, Mathias},
  title = {{Analyzing Usage Patterns in Online Games}},
  booktitle = {A Ludic Society},
  publisher = {Donau-Universität Krems - Universität für Weiterbildung Krems},
  year = {2021},
  abstract = {A typical life cycle of an online game is reflected in its usage patterns. A game first builds a user base, then reaches an absolute peak, to then being played by a minimum number of dedicated fans at the end of its life. Apart from this development, extraordinary internal and external events can be observed as changes in usage in games, especially multiplayer and massive multiplayer ones. For the usage of video games, the COVID-19 pandemic has impacted usage as it had on the game business itself. However, research lacks data to investigate these relations further. Usage statistics of games are rarely accessible for researchers. In this paper, we relate usage statistics to viewership and popularity of a game using available data sources like online statistics or activity on Twitch.tv. In a first study, data from the online role-playing game (MMORPG) Eternal Lands is analyzed. Eternal Lands is a free, multiplayer, online game that was created already in 2002. The usage patterns show day/night cycles of players in the prime time of the time zones where most players are located and increased playing activity on weekends. A general trend over time shows a slowly diminishing user base over the years since its introduction. In April 2020, a significant rise in user activities can be observed, attributed to lockdowns in many countries due to the COVID-19 pandemic. This can be attributed to regular players investing more time playing the game during the lockdown and to new or recurring players, who have not played the game intensively before, were looking for a distraction during the lockdown. In a second study, we focus on complementary viewer statistics on the popular game streaming platform Twitch.tv. We can observe that the COVID-19 pandemic impacted the playing time, as mentioned earlier. We relate usage data to viewership and streaming statistics of popular games. With the example of Eternal Lands, being a game that never went viral, we discuss the possibility of approximating a game's popularity through game streaming and viewership.},
  editor = {Natalie Denk and Alesha Serada and Alexander Pfeiffer and Thomas Wernbacher},
  pages = {347--359},
  address = {Krems an der Donau},
  month = {9},
  isbn = {978-3-903150-72-0},
  url = {https://mobile.aau.at/publications/elmenreich\_lux\_2021\_Analyzing\_Usage\_Patterns\_in\_Online\_Games.pdf},
  }

• W. Elmenreich and M. Gabriel, “Global History, Facts and Fiction in Early Computer Games: Hanse, Seven Cities of Gold, Sid Meier’s Pirates!,” in A Ludic Society, N. Denk, A. Serada, A. Pfeiffer, and T. Wernbacher, Eds., Krems an der Donau: Donau-Universität Krems – Universität für Weiterbildung Krems, 2021, p. 133–148.
  [BibTeX] [Abstract] [Download PDF]
  

  For many years, historiography has ignored the importance of computer games for the general perception of past events, focusing instead on “conventional” receptions in film or literature. Mainstream historiography propagated the thought that computer games could not meet academic standards. On the other hand, there had been early computer games using historical events as background. Meanwhile, it is logical to also keep in mind the motives of designers for producing games set against a (quasi-)historical background: Historic settings are attractive for designers because they provide an already existing logical framework for a game, while making costly license fees obsolete. In this work, we analyse three games set against the background of – what Europeans call – the Late Middle Ages and Early Modern Period. The game Hanse is a game featuring elements of the 14th century Baltic trade. Seven Cities of Gold deals with European conquest in the Americas (during the 1500s). It is a real-time strategy game focusing on exploration. Sid Meier’s Pirates! can be seen as a microcosm of the power struggle between European countries in the Early Modern Caribbean. It gives the player a sketch of complex economic or strategic issues where pirates (buccaneers) were operating under different circumstances to support the ambitions of colonial powers. The games were released between 1984 and 1987 for various platforms. Among the systems that have seen releases of all three games, the Commodore 64 versions have been used to analyse the games because of high market share and successful preservation of games. The games were in general very successful and well-received. From a technical perspective, those games did not max out the computer’s capabilities, but rather attracted the players via the interesting setting and the historical connection.

  @incollection{0f4de0c77c588461017c5bfb46760087,
  author = {Elmenreich, Wilfried and Gabriel, Martin},
  title = {{Global History, Facts and Fiction in Early Computer Games: Hanse, Seven Cities of Gold, Sid Meier's Pirates!}},
  booktitle = {A Ludic Society},
  publisher = {Donau-Universität Krems - Universität für Weiterbildung Krems},
  year = {2021},
  abstract = {For many years, historiography has ignored the importance of computer games for the general perception of past events, focusing instead on “conventional” receptions in film or literature. Mainstream historiography propagated the thought that computer games could not meet academic standards. On the other hand, there had been early computer games using historical events as background. Meanwhile, it is logical to also keep in mind the motives of designers for producing games set against a (quasi-)historical background: Historic settings are attractive for designers because they provide an already existing logical framework for a game, while making costly license fees obsolete. In this work, we analyse three games set against the background of – what Europeans call – the Late Middle Ages and Early Modern Period. The game Hanse is a game featuring elements of the 14th century Baltic trade. Seven Cities of Gold deals with European conquest in the Americas (during the 1500s). It is a real-time strategy game focusing on exploration. Sid Meier’s Pirates! can be seen as a microcosm of the power struggle between European countries in the Early Modern Caribbean. It gives the player a sketch of complex economic or strategic issues where pirates (buccaneers) were operating under different circumstances to support the ambitions of colonial powers. The games were released between 1984 and 1987 for various platforms. Among the systems that have seen releases of all three games, the Commodore 64 versions have been used to analyse the games because of high market share and successful preservation of games. The games were in general very successful and well-received. From a technical perspective, those games did not max out the computer’s capabilities, but rather attracted the players via the interesting setting and the historical connection.},
  editor = {Natalie Denk and Alesha Serada and Alexander Pfeiffer and Thomas Wernbacher},
  pages = {133--148},
  address = {Krems an der Donau},
  month = {9},
  isbn = {978-3-903150-72-0},
  url = {https://mobile.aau.at/publications/elmenreich\_gabriel\_2021\_Global\_History\_Facts\_and\_Fiction\_in\_Early\_Computer\_Games.pdf},
  }

• B. Salamat, N. A. Letizia, and A. M. Tonello, “Control Based Motion Planning Exploiting Calculus of Variations and Rational Functions: A Formal Approach,” IEEE Access, 2021. doi:10.1109/ACCESS.2021.3109125
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a control-based trajectory generation approach for unmanned aerial vehicles (UAVs) under dynamic constraints. It exploits the concept of optimal control to find closed-form differential equations that satisfy any arbitrary dynamic limitation mapped into kinematic constraints. Pontryagin’s Minimum Principle applies to derive a set of differential equations in which the dynamic environment is considered in the constrained Hamiltonian function. In particular, we aim to minimize the L2-norm of the control input avoiding dynamic obstacles, given initial and final boundary conditions. Lastly, this paper proposes a novel interpolation algorithm based on rational functions, referred to as rational recursive smooth trajectory (RRST) method. The method generates an analytic expression that approximates the control inputs, for which no closed-form solutions are in general attainable.

  @article{0f4de0c77b09c709017b0b5682270180,
  author = {Salamat, Babak and Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Control Based Motion Planning Exploiting Calculus of Variations and Rational Functions: A Formal Approach}},
  journal = {IEEE Access},
  year = {2021},
  abstract = {This paper presents a control-based trajectory generation approach for unmanned aerial vehicles (UAVs) under dynamic constraints. It exploits the concept of optimal control to find closed-form differential equations that satisfy any arbitrary dynamic limitation mapped into kinematic constraints. Pontryagin’s Minimum Principle applies to derive a set of differential equations in which the dynamic environment is considered in the constrained Hamiltonian function. In particular, we aim to minimize the L2-norm of the control input avoiding dynamic obstacles, given initial and final boundary conditions. Lastly, this paper proposes a novel interpolation algorithm based on rational functions, referred to as rational recursive smooth trajectory (RRST) method. The method generates an analytic expression that approximates the control inputs, for which no closed-form solutions are in general attainable.},
  doi = {10.1109/ACCESS.2021.3109125},
  month = {8},
  url = {https://ieeexplore.ieee.org/document/9525383},
  }

• A. Ebrahimi Jarihani, A. M. Tonello, and J. Sturm, “A full-duplex transceiver for 20-Gbps high-speed simultaneous bidirectional signaling across global on-chip interconnections,” International Journal of Circuit Theory and Applications, p. 1–12, 2021. doi:10.1002/cta.3116
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a high-speed simultaneous bidirectional transceiver (SBT) for on-chip wireline communications. A MOS hybrid transistor is utilized to split the received data from the superimposed signal at both ends of the on-chip interconnection with the assistance of two drivers, namely main and auxiliary. Moreover, a high-pass filter (HPF) is used as a differentiator to generate the echo cancelation signal. Consequently, the echo-cancelation for simultaneous bidirectional signaling (SBS) is realized by the combination of the hybrid device and the differentiator. The proposed SBT has been designed and evaluated using 28-nm CMOS technology over a narrow 5-mm on-chip interconnection, which possesses 11.9-dB loss at the Nyquist frequency (half a bit rate).The energy-efficiency of the proposed full-duplex transceiver (FDT) for 20-Gbps simultaneous bidirectional data transmission is 0.147 PJ/b/mm. The performance results show that the proposed SBT has better overall performance compared to the previous architectures reported in the literature to date. The layout of the presented SBT occupies a low area of 1574 um\textasciicircum2.

  @article{0f4de0c77b09c709017b0b40f5ef00ed,
  author = {Ebrahimi Jarihani, Arash and Tonello, Andrea M. and Sturm, Johannes},
  title = {{A full-duplex transceiver for 20-Gbps high-speed simultaneous bidirectional signaling across global on-chip interconnections}},
  journal = {International Journal of Circuit Theory and Applications},
  year = {2021},
  abstract = {This paper presents a high-speed simultaneous bidirectional transceiver (SBT) for on-chip wireline communications. A MOS hybrid transistor is utilized to split the received data from the superimposed signal at both ends of the on-chip interconnection with the assistance of two drivers, namely main and auxiliary. Moreover, a high-pass filter (HPF) is used as a differentiator to generate the echo cancelation signal. Consequently, the echo-cancelation for simultaneous bidirectional signaling (SBS) is realized by the combination of the hybrid device and the differentiator. The proposed SBT has been designed and evaluated using 28-nm CMOS technology over a narrow 5-mm on-chip interconnection, which possesses 11.9-dB loss at the Nyquist frequency (half a bit rate).The energy-efficiency of the proposed full-duplex transceiver (FDT) for 20-Gbps simultaneous bidirectional data transmission is 0.147 PJ/b/mm. The performance results show that the proposed SBT has better overall performance compared to the previous architectures reported in the literature to date. The layout of the presented SBT occupies a low area of 1574 um\textasciicircum2.},
  doi = {10.1002/cta.3116},
  pages = {1--12},
  month = {8},
  url = {https://onlinelibrary.wiley.com/doi/10.1002/cta.3116},
  }

• S. Einspieler, B. Steinwender, and W. Elmenreich, “Mixed-triggered communication with limited elastic slot boundaries,” Microprocessors and Microsystems, vol. 86, 2021. doi:10.1016/j.micpro.2021.104323
  [BibTeX] [Abstract] [Download PDF]
  

  Time-triggered systems provide dependable and deterministic communication based on strict time boundaries for tasks and messages. On the other hand, event-triggered communication is less strict on requirements and more flexible, but it is difficult to provide fault isolation. Thus, the combination of time-triggered and event-triggered communication is desirably extending a time-triggered communication system by a dynamic property. This paper improves a novel mixed-triggered communication approach based on ESBs which adds limited delay tolerance to an otherwise strict real-time communication. The presented approach overcomes the problem of delayed respectively missing messages by adding fail-operational behavior to the ESB-based communication. This is achieved by extending the basic mechanism using additional fault-tolerant features. The presented mechanism allows the system to stay operable even when messages occasionally violate their planned slot boundaries and provides fault isolation for timing violations beyond a predefined tolerance budget. The introduced fault-tolerant features are analyzed via Monte-Carlo simulations where the resulting data throughput is compared to two straightforward hard real-time communication approaches. As our results show, the proposed guards enable the system to handle extended message reception delays while, compared to strictly bounded communication, having a better performance of successfully transmitted messages.

  @article{0f4de0c77d69abd9017d6c8c34ef006b,
  author = {Einspieler, Sascha and Steinwender, Benjamin and Elmenreich, Wilfried},
  title = {{Mixed-triggered communication with limited elastic slot boundaries}},
  journal = {Microprocessors and Microsystems},
  year = {2021},
  abstract = {Time-triggered systems provide dependable and deterministic communication based on strict time boundaries for tasks and messages. On the other hand, event-triggered communication is less strict on requirements and more flexible, but it is difficult to provide fault isolation. Thus, the combination of time-triggered and event-triggered communication is desirably extending a time-triggered communication system by a dynamic property. This paper improves a novel mixed-triggered communication approach based on ESBs which adds limited delay tolerance to an otherwise strict real-time communication. The presented approach overcomes the problem of delayed respectively missing messages by adding fail-operational behavior to the ESB-based communication. This is achieved by extending the basic mechanism using additional fault-tolerant features. The presented mechanism allows the system to stay operable even when messages occasionally violate their planned slot boundaries and provides fault isolation for timing violations beyond a predefined tolerance budget. The introduced fault-tolerant features are analyzed via Monte-Carlo simulations where the resulting data throughput is compared to two straightforward hard real-time communication approaches. As our results show, the proposed guards enable the system to handle extended message reception delays while, compared to strictly bounded communication, having a better performance of successfully transmitted messages.},
  doi = {10.1016/j.micpro.2021.104323},
  volume = {86},
  month = {8},
  url = {https://www.sciencedirect.com/science/article/abs/pii/S0141933121004828},
  }

• S. Einspieler, N. Rathakrishnan, A. Prabhakara, B. Steinwender, and W. Elmenreich, “High Accuracy Software-Based Clock Synchronization Over CAN,” IEEE Transactions on Systems, Man, and Cybernetics, p. 1–9, 2021. doi:10.1109/TSMC.2021.3096597
  [BibTeX] [Abstract]
  

  In distributed real-time communication systems, common knowledge of the global time is crucial. It prevents message violations on the bus and allows independent components to collaborate within a real-time system on a timely basis. Systems with hard real-time requirements need to have high precision and accuracy of time. This is achieved by hardware-supported frame time-stamping mechanisms as found in dedicated protocols, such as TTCAN, Flexray, and TSN-enabled Ethernet. However, many microcontroller units are not specifically designed to provide such a hardware-based solution at the communication interface. Therefore, a software-based implementation of the time synchronization algorithm is needed. Nevertheless, some COTS microcontroller units already provide an IEEE 1588-enabled Ethernet interface, including a high-precision timer module with rate correction. This module can be used for time synchronization purposes to align a set of distributed clocks via various communication interfaces. This article investigates the accuracy of software-based and hardware-supported time synchronization algorithm over the CAN protocol using a COTS microcontroller. As a result, we present identified jitter and delay sources as well as the achieved time accuracy. We show that using an advanced timer module combined with additional system knowledge allows submicrosecond precision and accuracies.

  @article{0f4de0c77d69abd9017d6c7a4c810040,
  author = {Einspieler, Sascha and Rathakrishnan, Nirmal and Prabhakara, Arpitha and Steinwender, Benjamin and Elmenreich, Wilfried},
  title = {{High Accuracy Software-Based Clock Synchronization Over CAN}},
  journal = {IEEE Transactions on Systems, Man, and Cybernetics},
  year = {2021},
  abstract = {In distributed real-time communication systems, common knowledge of the global time is crucial. It prevents message violations on the bus and allows independent components to collaborate within a real-time system on a timely basis. Systems with hard real-time requirements need to have high precision and accuracy of time. This is achieved by hardware-supported frame time-stamping mechanisms as found in dedicated protocols, such as TTCAN, Flexray, and TSN-enabled Ethernet. However, many microcontroller units are not specifically designed to provide such a hardware-based solution at the communication interface. Therefore, a software-based implementation of the time synchronization algorithm is needed. Nevertheless, some COTS microcontroller units already provide an IEEE 1588-enabled Ethernet interface, including a high-precision timer module with rate correction. This module can be used for time synchronization purposes to align a set of distributed clocks via various communication interfaces. This article investigates the accuracy of software-based and hardware-supported time synchronization algorithm over the CAN protocol using a COTS microcontroller. As a result, we present identified jitter and delay sources as well as the achieved time accuracy. We show that using an advanced timer module combined with additional system knowledge allows submicrosecond precision and accuracies.},
  doi = {10.1109/TSMC.2021.3096597},
  pages = {1--9},
  month = {7},
  }

• D. Righini and A. M. Tonello, “Characterization and Exploitation of Quasi Determinism in Multi-Conductor Power Line Communication Noise,” IEEE Open Journal of the Communications Society, vol. 2, p. 1809–1825, 2021. doi:10.1109/OJCOMS.2021.3099524
  [BibTeX] [Abstract] [Download PDF]
  

  Several experiments and field trials have shown that deterministic components characterize the Power Line Communication (PLC) noise across multiple-conductors. This article aims at understanding the main origins of these noise components and evaluate several methods to characterize them statistically. The correlation, distance-correlation, mutual information estimation, and a proposed linear coefficient ratio, are used to analyze the noise time-series statistically. The analysis of the PLC noise deterministic components allow us to develop an enhanced noise model that includes them. The presence of deterministic noise fosters the development of coding and decoding algorithms that aim at mitigating the noise effect. New decoding techniques called Quasi-Deterministic-Decoding are detailed and tested with single-input-multiple-output (SIMO) 1×2 and multiple-input-multiple-output (MIMO) 2×2 transmission configurations using real PLC noise and channel realizations. The proposed model leads to a better representation of the PLC noise traces and, consequently, the development of improved coding algorithms for reliable data transmission at low signal-to-noise ratios.

  @article{0f4de0c77b09c709017b0b4a154b0125,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{Characterization and Exploitation of Quasi Determinism in Multi-Conductor Power Line Communication Noise}},
  journal = {IEEE Open Journal of the Communications Society},
  year = {2021},
  abstract = {Several experiments and field trials have shown that deterministic components characterize the Power Line Communication (PLC) noise across multiple-conductors. This article aims at understanding the main origins of these noise components and evaluate several methods to characterize them statistically. The correlation, distance-correlation, mutual information estimation, and a proposed linear coefficient ratio, are used to analyze the noise time-series statistically. The analysis of the PLC noise deterministic components allow us to develop an enhanced noise model that includes them. The presence of deterministic noise fosters the development of coding and decoding algorithms that aim at mitigating the noise effect. New decoding techniques called Quasi-Deterministic-Decoding are detailed and tested with single-input-multiple-output (SIMO) 1x2 and multiple-input-multiple-output (MIMO) 2x2 transmission configurations using real PLC noise and channel realizations. The proposed model leads to a better representation of the PLC noise traces and, consequently, the development of improved coding algorithms for reliable data transmission at low signal-to-noise ratios.},
  doi = {10.1109/OJCOMS.2021.3099524},
  volume = {2},
  pages = {1809--1825},
  month = {7},
  url = {https://ieeexplore.ieee.org/document/9494419},
  }

• M. M. Schranz, M. Umlauft, and W. Elmenreich, “Bottom-up Job Shop Scheduling with Swarm Intelligence in Large Production Plants,” in Proceedings of the 11th International Conference on Simulation and Modeling Methodologies, Technologies and Applications – SIMULTECH, Setubal, 2021, p. 327–334. doi:10.5220/0010551603270334
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c680166275018018a374ee00c9,
  author = {Schranz, Melanie Marianne and Umlauft, Martina and Elmenreich, Wilfried},
  title = {{Bottom-up Job Shop Scheduling with Swarm Intelligence in Large Production Plants}},
  booktitle = {Proceedings of the 11th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - SIMULTECH},
  year = {2021},
  editor = {Gerd Wagner and Frank Werner and Tuncer Ören and Floriano De Rango},
  doi = {10.5220/0010551603270334},
  pages = {327--334},
  address = {Setubal},
  month = {7},
  publisher = {SciTePress Digital Library},
  url = {https://mobile.aau.at/publications/schranz-2021-Bottom\_up\_Job\_Shop\_Scheduling\_with\_Swarm\_Intelligence\_in\_Large\_Production\_Plants.pdf},
  }

• N. A. Letizia and A. M. Tonello, “Capacity-Driven Autoencoders for Communications,” IEEE Open Journal of the Communications Society, vol. 2, p. 1366–1378, 2021. doi:10.1109/OJCOMS.2021.3087815
  [BibTeX] [Abstract] [Download PDF]
  

  The autoencoder concept has fostered the reinterpretation and the design of moderncommunication systems. It consists of an encoder, a channel and a decoder block that modify theirinternal neural structure in an end-to-end learning fashion. However, the current approach to train anautoencoder relies on the use of the cross-entropy loss function. This approach can be prone to overfittingissues and often fails to learn an optimal system and signal representation (code). In addition, less is knownabout the autoencoder ability to design channel capacity-approaching codes, i.e., codes that maximize theinput-output mutual information under a certain power constraint. The task being even more formidablefor an unknown channel for which the capacity is unknown and therefore it has to be learnt. In thispaper, we address the challenge of designing capacity-approaching codes by incorporating the presenceof the communication channel into a novel loss function for the autoencoder training. In particular, weexploit the mutual information between the transmitted and received signals as a regularization termin the cross-entropy loss function, with the aim of controlling the amount of information stored. Byjointly maximizing the mutual information and minimizing the cross-entropy, we propose a theoreticalapproach that a) computes an estimate of the channel capacity and b) constructs an optimal coded signalapproaching it. Theoretical considerations are made on the choice of the cost function and the ability ofthe proposed architecture to mitigate the overfitting problem. Simulation results offer an initial evidenceof the potentiality of the proposed method.

  @article{0f4de0c57ae09389017ae2dfff1200d8,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Capacity-Driven Autoencoders for Communications}},
  journal = {IEEE Open Journal of the Communications Society},
  year = {2021},
  abstract = {The autoencoder concept has fostered the reinterpretation and the design of moderncommunication systems. It consists of an encoder, a channel and a decoder block that modify theirinternal neural structure in an end-to-end learning fashion. However, the current approach to train anautoencoder relies on the use of the cross-entropy loss function. This approach can be prone to overfittingissues and often fails to learn an optimal system and signal representation (code). In addition, less is knownabout the autoencoder ability to design channel capacity-approaching codes, i.e., codes that maximize theinput-output mutual information under a certain power constraint. The task being even more formidablefor an unknown channel for which the capacity is unknown and therefore it has to be learnt. In thispaper, we address the challenge of designing capacity-approaching codes by incorporating the presenceof the communication channel into a novel loss function for the autoencoder training. In particular, weexploit the mutual information between the transmitted and received signals as a regularization termin the cross-entropy loss function, with the aim of controlling the amount of information stored. Byjointly maximizing the mutual information and minimizing the cross-entropy, we propose a theoreticalapproach that a) computes an estimate of the channel capacity and b) constructs an optimal coded signalapproaching it. Theoretical considerations are made on the choice of the cost function and the ability ofthe proposed architecture to mitigate the overfitting problem. Simulation results offer an initial evidenceof the potentiality of the proposed method.},
  doi = {10.1109/OJCOMS.2021.3087815},
  volume = {2},
  pages = {1366--1378},
  month = {6},
  url = {https://ieeexplore.ieee.org/},
  }

• D. Righini and A. M. Tonello, “MIMO In-Band-Full-Duplex PLC: Design, Analysis and First Hardware Realization of the Analog Self-Interference Cancellation Stage,” IEEE Open Journal of the Communications Society, vol. 2, p. 1344–1357, 2021. doi:10.1109/OJCOMS.2021.3085830
  [BibTeX] [Abstract] [Download PDF]
  

  In-band full-duplex (IBFD) is an attractive solution for increasing the throughput of PowerLine Communication (PLC) systems. In IBFD, each network node is allowed to transmit and receivesimultaneously in the same frequency band. This paper discusses the importance of defining figures ofmerit to analyze IBFD performance, which is often forgotten by the literature that addresses IBFD from apure system level and signal processing perspective. This is because in IBFD hardware-related aspects areof great importance. The focus is then given to the first self-interference (SI) cancellation stage, namelythe analog coupling and self-interference cancellation stage (ASICS). Two architectures are considered. Adetailed analysis is offered by taking into account circuit-level aspects. A broadband multiple conductorPLC scenario is assumed to enable multiple-input multiple-output (MIMO) IBFD communication. The firstconsidered architecture performs SI subtraction exploiting operational amplifiers. The second proposedarchitecture exploits the characteristics of a three ports magnetic circuit together with a signal generatorto remove the SI. Design, analysis, and hardware realization of these circuits have been done to compareand show the practical feasibility of the ASICS for PLC, well known to be challenged by its lineimpedance matching problems and severe frequency selective channel characteristics. This paper is thefirst documented contribution of the IBFD ASICS for 2×2 MIMO broadband PLC physically realized andtested in the field.

  @article{0f4de0c57ae09389017ae2e6c31400f2,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{MIMO In-Band-Full-Duplex PLC: Design, Analysis and First Hardware Realization of the Analog Self-Interference Cancellation Stage}},
  journal = {IEEE Open Journal of the Communications Society},
  year = {2021},
  abstract = {In-band full-duplex (IBFD) is an attractive solution for increasing the throughput of PowerLine Communication (PLC) systems. In IBFD, each network node is allowed to transmit and receivesimultaneously in the same frequency band. This paper discusses the importance of defining figures ofmerit to analyze IBFD performance, which is often forgotten by the literature that addresses IBFD from apure system level and signal processing perspective. This is because in IBFD hardware-related aspects areof great importance. The focus is then given to the first self-interference (SI) cancellation stage, namelythe analog coupling and self-interference cancellation stage (ASICS). Two architectures are considered. Adetailed analysis is offered by taking into account circuit-level aspects. A broadband multiple conductorPLC scenario is assumed to enable multiple-input multiple-output (MIMO) IBFD communication. The firstconsidered architecture performs SI subtraction exploiting operational amplifiers. The second proposedarchitecture exploits the characteristics of a three ports magnetic circuit together with a signal generatorto remove the SI. Design, analysis, and hardware realization of these circuits have been done to compareand show the practical feasibility of the ASICS for PLC, well known to be challenged by its lineimpedance matching problems and severe frequency selective channel characteristics. This paper is thefirst documented contribution of the IBFD ASICS for 2x2 MIMO broadband PLC physically realized andtested in the field.},
  doi = {10.1109/OJCOMS.2021.3085830},
  volume = {2},
  pages = {1344--1357},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/9446601},
  }

• P. Ladinig, B. Rinner, and S. M. Weiss, “Time and Energy Optimized Trajectory Generation for Multi-Agent Constellation Changes,” in Proceedings of the IEEE International Conference on Robotics and Automation (ICRA 2021), Piscataway (NJ), 2021, p. 7400–7406. doi:10.1109/ICRA48506.2021.9561702
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c57e2d5ded017e2e924adc0000,
  author = {Ladinig, Paul and Rinner, Bernhard and Weiss, Stephan Michael},
  title = {{Time and Energy Optimized Trajectory Generation for Multi-Agent Constellation Changes}},
  booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation (ICRA 2021)},
  year = {2021},
  doi = {10.1109/ICRA48506.2021.9561702},
  pages = {7400--7406},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9561702},
  }

• R. Agyeman, M. Rafiq, H. K. Shin, B. Rinner, and G. S. Choi, “Optimizing Spatiotemporal Feature Learning in 3D Convolutional Neural Networks With Pooling Blocks,” IEEE Access, vol. 9, p. 70797–70805, 2021. doi:10.1109/ACCESS.2021.3078295
  [BibTeX] [Abstract] [Download PDF]
  

  Image data contain spatial information only, thus making two-dimensional (2D) Convolutional Neural Networks (CNN) ideal for solving image classification problems. On the other hand, video data contain both spatial and temporal information that must be simultaneously analyzed to solve action recognition problems. 3D CNNs are successfully used for these tasks, but they suffer from their extensive inherent parameter set. Increasing the network’s depth, as is common among 2D CNNs, and hence increasing the number of trainable parameters does not provide a good trade-off between accuracy and complexity of the 3D CNN. In this work, we propose Pooling Block (PB) as an enhanced pooling operation for optimizing action recognition by 3D CNNs. PB comprises three kernels of different sizes. The three kernels simultaneously sub-sample feature maps, and the outputs are concatenated into a single output vector. We compare our approach with three benchmark 3D CNNs (C3D, I3D, and Asymmetric 3D CNN) and three datasets (HMDB51, UCF101, and Kinetics 400). Our PB method yields significant improvement in 3D CNN performance with a comparatively small increase in the number of trainable parameters. We further investigate (1) the effect of video frame dimension and (2) the effect of the number of video frames on the performance of 3D CNNs using C3D as the benchmark.

  @article{0f4de0c779e43c200179e6ae6cd20096,
  author = {Agyeman, Rockson and Rafiq, Muhammad and Shin, Hyun Kwang and Rinner, Bernhard and Choi, Gyu Sang},
  title = {{Optimizing Spatiotemporal Feature Learning in 3D Convolutional Neural Networks With Pooling Blocks}},
  journal = {IEEE Access},
  year = {2021},
  abstract = {Image data contain spatial information only, thus making two-dimensional (2D) Convolutional Neural Networks (CNN) ideal for solving image classification problems. On the other hand, video data contain both spatial and temporal information that must be simultaneously analyzed to solve action recognition problems. 3D CNNs are successfully used for these tasks, but they suffer from their extensive inherent parameter set. Increasing the network’s depth, as is common among 2D CNNs, and hence increasing the number of trainable parameters does not provide a good trade-off between accuracy and complexity of the 3D CNN. In this work, we propose Pooling Block (PB) as an enhanced pooling operation for optimizing action recognition by 3D CNNs. PB comprises three kernels of different sizes. The three kernels simultaneously sub-sample feature maps, and the outputs are concatenated into a single output vector. We compare our approach with three benchmark 3D CNNs (C3D, I3D, and Asymmetric 3D CNN) and three datasets (HMDB51, UCF101, and Kinetics 400). Our PB method yields significant improvement in 3D CNN performance with a comparatively small increase in the number of trainable parameters. We further investigate (1) the effect of video frame dimension and (2) the effect of the number of video frames on the performance of 3D CNNs using C3D as the benchmark.},
  doi = {10.1109/ACCESS.2021.3078295},
  volume = {9},
  pages = {70797--70805},
  month = {5},
  url = {https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=9425533},
  }

• E. Sharma and W. Elmenreich, “A Review on Physical and Data-Driven Based Nowcasting Methods Using Sky Images,” in Advances in Intelligent Systems and Computing, A. Kohei, Ed., Springer, Cham, 2021, vol. 1364, p. 352–370. doi:10.1007/978-3-030-73103-8_24
  [BibTeX] [Download PDF]

  @incollection{0f4de0c678f230fd0178f59cde3501d9,
  author = {Sharma, Ekanki and Elmenreich, Wilfried},
  title = {{A Review on Physical and Data-Driven Based Nowcasting Methods Using Sky Images}},
  booktitle = {Advances in Intelligent Systems and Computing},
  publisher = {Springer, Cham},
  year = {2021},
  doi = {10.1007/978-3-030-73103-8\_24},
  editor = {Arai Kohei},
  volume = {1364},
  series = {Advances in Information and Communication},
  pages = {352--370},
  month = {4},
  isbn = {978-3-030-73103-8},
  url = {https://arxiv.org/pdf/2105.02959.pdf},
  }

• A. Stornig, A. Fakhreddine, H. Hellwagner, P. Popovski, and C. Bettstetter, “Video Quality and Latency for UAV Teleoperation over LTE: A Study with ns3,” in VTC2021-Spring: Proceedings of the IEEE 93rd Vehicular Technology Conference, Piscataway (NJ), 2021, p. 1–7. doi:10.1109/vtc2021-spring51267.2021.9448676
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c57ad120dc017ad24c0bda0027,
  author = {Stornig, Antonia and Fakhreddine, Aymen and Hellwagner, Hermann and Popovski, Petar and Bettstetter, Christian},
  title = {{Video Quality and Latency for UAV Teleoperation over LTE: A Study with ns3}},
  booktitle = {VTC2021-Spring: Proceedings of the IEEE 93rd Vehicular Technology Conference },
  year = {2021},
  doi = {10.1109/vtc2021-spring51267.2021.9448676},
  pages = {1--7},
  address = {Piscataway (NJ)},
  month = {4},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/abstract/document/9448676},
  }

• J. F. Schmidt, D. Neuhold, C. Bettstetter, J. Klaue, and D. Schupke, “Wireless Connectivity in Airplanes: Challenges and the Case for UWB,” IEEE Access, vol. 9, p. 52913–52925, 2021. doi:10.1109/ACCESS.2021.3070141
  [BibTeX] [Abstract] [Download PDF]
  

  Wireless solutions for on-board communications are gaining momentum in the aerospace industry with the aim to further improve flight safety, reduce aircraft costs, and lower environmental impact. Also passenger infotainment services are increasingly realized in a wireless way and call for high-rate connectivity to the Internet. There are many issues though, including security, coexistence, and power sustainability. We argue that ultra-wideband (UWB) technology is a promising implementation path for such intra-aircaft communications. From a power sustainability perspective, UWB attains a unique trade-off between power consumption and data rate that can become a key enabler. Experimental results from a proof-of-concept deployment of off-the-shelf UWB transceivers in an Airbus A319 support our discussion and shed light on the challenges ahead.

  @article{0f4de0c678d871500178d9526ab30000,
  author = {Schmidt, Jorge Friedrich and Neuhold, Daniel and Bettstetter, Christian and Klaue, Jirka and Schupke, Dominic},
  title = {{Wireless Connectivity in Airplanes: Challenges and the Case for UWB}},
  journal = {IEEE Access},
  year = {2021},
  abstract = {Wireless solutions for on-board communications are gaining momentum in the aerospace industry with the aim to further improve flight safety, reduce aircraft costs, and lower environmental impact. Also passenger infotainment services are increasingly realized in a wireless way and call for high-rate connectivity to the Internet. There are many issues though, including security, coexistence, and power sustainability. We argue that ultra-wideband (UWB) technology is a promising implementation path for such intra-aircaft communications. From a power sustainability perspective, UWB attains a unique trade-off between power consumption and data rate that can become a key enabler. Experimental results from a proof-of-concept deployment of off-the-shelf UWB transceivers in an Airbus A319 support our discussion and shed light on the challenges ahead.},
  doi = {10.1109/ACCESS.2021.3070141},
  volume = {9},
  pages = {52913--52925},
  month = {3},
  url = {https://ieeexplore.ieee.org/document/9391672},
  }

• J. Breitegger, C. Raffelsberger, S. Borkotoky, I. Rogler, and C. Bettstetter, “Long-Term LoRa Experiments in a Chemical Plant,” in 2021 22nd IEEE International Conference on Industrial Technology (ICIT), 2021. doi:10.1109/ICIT46573.2021.9453474
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c57dc65e83017dc7d4ba4b0186,
  author = {Breitegger, Jessica and Raffelsberger, Christian and Borkotoky, Siddhartha and Rogler, Ingomar and Bettstetter, Christian},
  title = {{Long-Term LoRa Experiments in a Chemical Plant}},
  booktitle = {2021 22nd IEEE International Conference on Industrial Technology (ICIT)},
  year = {2021},
  doi = {10.1109/ICIT46573.2021.9453474},
  month = {3},
  url = {https://bettstetter.com/},
  }

• A. Prabhakara, B. Steinwender, and W. Elmenreich, “Statistical analysis of execution time profile for temporal validation of a distributed hard real-time system,” in 2021 22nd IEEE International Conference on Industrial Technology (ICIT), 2021. doi:10.1109/ICIT46573.2021.9453493
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77d69abd9017d6c973433008c,
  author = {Prabhakara, Arpitha and Steinwender, Benjamin and Elmenreich, Wilfried},
  title = {{Statistical analysis of execution time profile for temporal validation of a distributed hard real-time system}},
  booktitle = {2021 22nd IEEE International Conference on Industrial Technology (ICIT)},
  year = {2021},
  doi = {10.1109/ICIT46573.2021.9453493},
  month = {3},
  url = {https://mobile.aau.at/publications/prabhakara-2021-Statistical\_analysis\_of\_execution\_time\_profile\_for\_temporal\_validation\_of\_a\_distributed\_hard\_real-time\_system.pdf},
  }

• C. Klemenjak, S. Makonin, and W. Elmenreich, “Investigating the performance gap between testing on real and denoised aggregates in non-intrusive load monitoring,” Energy Informatics, p. 1–15, 2021. doi:10.1186/s42162-021-00137-9
  [BibTeX] [Abstract] [Download PDF]
  

  Prudent and meaningful performance evaluation of algorithms is essential for the progression of any research field. In the field of Non-Intrusive Load Monitoring (NILM), performance evaluation can be conducted on real-world aggregate signals, provided by smart energy meters or artificial superpositions of individual load signals (i.e., denoised aggregates). It has long been suspected that testing on these denoised aggregates provides better evaluation results mainly due to the fact that the signal is less complex. Complexity in real-world aggregate signals increases with the number of unknown/untracked loads. Although this is a known performance reporting problem, an investigation into the actual performance gap between real and denoised testing is still pending. In this paper, we examine the performance gap between testing on real-world and denoised aggregates with the aim of bringing clarity into this matter. Starting with an assessment of noise levels in datasets, we find significant differences in test cases. We give broad insights into our evaluation setup comprising three load disaggregation algorithms, two of them relying on neural network architectures. The results presented in this paper, based on studies covering three scenarios with ascending noise levels, show a strong tendency towards load disaggregation algorithms providing significantly better performance on denoised aggregate signals. A closer look at the outcome of our studies reveals that all appliance types could be subject to this phenomenon. We conclude the paper by discussing aspects that could be causing these considerable gaps between real and denoised testing in NILM.

  @article{0f4de0c778f757ee0178f8c30b730011,
  author = {Klemenjak, Christoph and Makonin, Stephen and Elmenreich, Wilfried},
  title = {{Investigating the performance gap between testing on real and denoised aggregates in non-intrusive load monitoring}},
  journal = {Energy Informatics},
  year = {2021},
  abstract = {Prudent and meaningful performance evaluation of algorithms is essential for the progression of any research field. In the field of Non-Intrusive Load Monitoring (NILM), performance evaluation can be conducted on real-world aggregate signals, provided by smart energy meters or artificial superpositions of individual load signals (i.e., denoised aggregates). It has long been suspected that testing on these denoised aggregates provides better evaluation results mainly due to the fact that the signal is less complex. Complexity in real-world aggregate signals increases with the number of unknown/untracked loads. Although this is a known performance reporting problem, an investigation into the actual performance gap between real and denoised testing is still pending. In this paper, we examine the performance gap between testing on real-world and denoised aggregates with the aim of bringing clarity into this matter. Starting with an assessment of noise levels in datasets, we find significant differences in test cases. We give broad insights into our evaluation setup comprising three load disaggregation algorithms, two of them relying on neural network architectures. The results presented in this paper, based on studies covering three scenarios with ascending noise levels, show a strong tendency towards load disaggregation algorithms providing significantly better performance on denoised aggregate signals. A closer look at the outcome of our studies reveals that all appliance types could be subject to this phenomenon. We conclude the paper by discussing aspects that could be causing these considerable gaps between real and denoised testing in NILM.},
  doi = {10.1186/s42162-021-00137-9},
  pages = {1--15},
  month = {3},
  url = {https://link.springer.com/article/10.1186/s42162-021-00137-9},
  }

• A. M. Pirbazari, E. Sharma, A. Chakravorty, W. Elmenreich, and C. Rong, “An Ensemble Approach for Multi-Step Ahead Energy Forecasting of Household Communities,” IEEE Access, 2021. doi:10.1109/ACCESS.2021.3063066
  [BibTeX] [Download PDF]

  @article{0f4de0c678f230fd0178f578cb3a018f,
  author = {Pirbazari, Aida Mehdipour and Sharma, Ekanki and Chakravorty, Antorweep and Elmenreich, Wilfried and Rong, Chunming},
  title = {{An Ensemble Approach for Multi-Step Ahead Energy Forecasting of Household Communities}},
  journal = {IEEE Access},
  year = {2021},
  doi = {10.1109/ACCESS.2021.3063066},
  month = {3},
  url = {https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=9366871},
  }

• S. Hayat, R. Jung, H. Hellwagner, C. Bettstetter, D. Emini, and D. Schnieders, “Edge Computing in 5G for Drone Navigation: What to Offload?,” IEEE Robotics and Automation Letters, vol. 6, iss. 2, p. 2571–2578, 2021. doi:10.1109/lra.2021.3062319
  [BibTeX] [Abstract] [Download PDF]
  

  Small drones that navigate using cameras may be limited in their speed and agility by low onboard computing power. We evaluate the role of edge computing in 5G for such autonomous navigation. The offloading of image processing tasks to an edge server is studied with a vision-based navigation algorithm. Three computation modes are compared: onboard, fully offloaded to the edge, and partially offloaded. Partial offloading is expected to pose lower demands on the communication network in terms of transfer rate than full offloading but requires some onboard processing. Our results on the computation time help select the most suitable mode for image processing, i.e., whether and what to offload, based on the network conditions.

  @article{0f4de0c77a8907c4017a8a6c6d21010f,
  author = {Hayat, Samira and Jung, Roland and Hellwagner, Hermann and Bettstetter, Christian and Emini, Driton and Schnieders, Dominik},
  title = {{Edge Computing in 5G for Drone Navigation: What to Offload?}},
  journal = {IEEE Robotics and Automation Letters},
  year = {2021},
  abstract = {Small drones that navigate using cameras may be limited in their speed and agility by low onboard computing power. We evaluate the role of edge computing in 5G for such autonomous navigation. The offloading of image processing tasks to an edge server is studied with a vision-based navigation algorithm. Three computation modes are compared: onboard, fully offloaded to the edge, and partially offloaded. Partial offloading is expected to pose lower demands on the communication network in terms of transfer rate than full offloading but requires some onboard processing. Our results on the computation time help select the most suitable mode for image processing, i.e., whether and what to offload, based on the network conditions.},
  doi = {10.1109/lra.2021.3062319},
  volume = {6},
  number = {2},
  pages = {2571--2578},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/9363523},
  }

• N. A. Letizia, B. Salamat, and A. M. Tonello, “A Novel Recursive Smooth Trajectory Generation Method for Unmanned Vehicles,” IEEE Transactions on Robotics, vol. 37, iss. 5, p. 1792–1805, 2021. doi:10.1109/TRO.2021.3053649
  [BibTeX] [Abstract]
  

  This article presents a novel recursive smooth trajectory (RST) generation algorithm for application in robotics and in particular for unmanned aerial vehicles (UAVs). RST builds the trajectory recursively as a smooth polynomial path, thus a closed form trajectory satisfying any arbitrary dynamic limitation that translates into kinematic constraints (e.g., position, velocity, acceleration, etc.). Uncertainties and perturbations in the constraints are also discussed, modeled, and finally included in the calculationof the polynomial trajectory coefficients. Moreover, due to its recursive formulation, RST enables an immediate extension toward the solution of a trajectory optimization problem. In particular, it is shown that the minimum-snap piecewise polynomial trajectory can be interpreted as a special case of RST. The effectiveness of the proposed algorithm is demonstrated numerically via two illustrative scenarios. Its application to a UAV structure is also discussed to highlight the advantage of a smooth path over a piecewise one. Finally, the computational complexity and memory requirements are analyzed.

  @article{0f4de0c576a752ff0176a9fa7d1b00b1,
  author = {Letizia, Nunzio Alexandro and Salamat, Babak and Tonello, Andrea M.},
  title = {{A Novel Recursive Smooth Trajectory Generation Method for Unmanned Vehicles}},
  journal = {IEEE Transactions on Robotics},
  year = {2021},
  abstract = {This article presents a novel recursive smooth trajectory (RST) generation algorithm for application in robotics and in particular for unmanned aerial vehicles (UAVs). RST builds the trajectory recursively as a smooth polynomial path, thus a closed form trajectory satisfying any arbitrary dynamic limitation that translates into kinematic constraints (e.g., position, velocity, acceleration, etc.). Uncertainties and perturbations in the constraints are also discussed, modeled, and finally included in the calculationof the polynomial trajectory coefficients. Moreover, due to its recursive formulation, RST enables an immediate extension toward the solution of a trajectory optimization problem. In particular, it is shown that the minimum-snap piecewise polynomial trajectory can be interpreted as a special case of RST. The effectiveness of the proposed algorithm is demonstrated numerically via two illustrative scenarios. Its application to a UAV structure is also discussed to highlight the advantage of a smooth path over a piecewise one. Finally, the computational complexity and memory requirements are analyzed.},
  doi = {10.1109/TRO.2021.3053649},
  volume = {37},
  number = {5},
  pages = {1792--1805},
  month = {2},
  }

• P. Valet, D. Schwingshackl, and A. M. Tonello, “Comparative Study on Pre-Distortion/Calibration Methods for Current-Steering Digital-to-Analog Converters,” in IEEE 12th Latin America Symposium on Circuits and System (LASCAS), Piscataway (NJ), 2021. doi:10.1109/LASCAS51355.2021.9459164
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c576a752ff0176aa0105cd00cf,
  author = {Valet, Patrick and Schwingshackl, David and Tonello, Andrea M.},
  title = {{Comparative Study on Pre-Distortion/Calibration Methods for Current-Steering Digital-to-Analog Converters}},
  booktitle = {IEEE 12th Latin America Symposium on Circuits and System (LASCAS)},
  year = {2021},
  doi = {10.1109/LASCAS51355.2021.9459164},
  address = {Piscataway (NJ)},
  month = {2},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9459164},
  }

• J. F. Schmidt, U. Schilcher, M. K. Atiq, and C. Bettstetter, “Interference Prediction in Wireless Networks: Stochastic Geometry meets Recursive Filtering,” IEEE Transactions on Vehicular Technology, vol. 70, iss. 3, p. 2783–2793, 2021. doi:10.1109/TVT.2021.3059032
  [BibTeX] [Abstract] [Download PDF]
  

  This article proposes and evaluates a technique to predict the level of interference in wireless networks. We design a recursive predictor that estimates future interference values by filtering measured interference at a given location. The predictor's parameterization is done offline by translating the autocorrelation of interference into an autoregressive moving average (ARMA) representation. This ARMA model is inserted into a steady-state Kalman filter enabling nodes to predict with low computational effort. Results show a good accuracy of predicted values versus true values for relevant time horizons. Although the predictor is parameterized for Poisson-distributed nodes, Rayleigh fading, and fixed message lengths, a sensitivity analysis shows that it also tends to work well in more general network scenarios. Numerical examples for underlay device-to-device communications, a common wireless sensor technology, and coexistence scenarios of Wi-Fi and LTE illustrate its broad applicability. The predictor can be applied as part of interference management to improve medium access, scheduling, and radio resource allocation.

  @article{0f4de0c778ce24f80178cfc0daae0022,
  author = {Schmidt, Jorge Friedrich and Schilcher, Udo and Atiq, Mahin Khushbakht and Bettstetter, Christian},
  title = {{Interference Prediction in Wireless Networks: Stochastic Geometry meets Recursive Filtering}},
  journal = {IEEE Transactions on Vehicular Technology},
  year = {2021},
  abstract = {This article proposes and evaluates a technique to predict the level of interference in wireless networks. We design a recursive predictor that estimates future interference values by filtering measured interference at a given location. The predictor\'s parameterization is done offline by translating the autocorrelation of interference into an autoregressive moving average (ARMA) representation. This ARMA model is inserted into a steady-state Kalman filter enabling nodes to predict with low computational effort. Results show a good accuracy of predicted values versus true values for relevant time horizons. Although the predictor is parameterized for Poisson-distributed nodes, Rayleigh fading, and fixed message lengths, a sensitivity analysis shows that it also tends to work well in more general network scenarios. Numerical examples for underlay device-to-device communications, a common wireless sensor technology, and coexistence scenarios of Wi-Fi and LTE illustrate its broad applicability. The predictor can be applied as part of interference management to improve medium access, scheduling, and radio resource allocation.},
  doi = {10.1109/TVT.2021.3059032},
  volume = {70},
  number = {3},
  pages = {2783--2793},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/9354031},
  }

• W. Elmenreich, A. S. Schnabl, and M. M. Schranz, “An Artificial Hormone-based Algorithm for Production Scheduling from the Bottom-up,” in Proceedings of the 13th International Conference on Agents and Artificial Intelligence (ICAART 2021), Setubal, 2021, p. 296–303. doi:10.5220/0010243902960303
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c778ce24f80178d17d5fa40351,
  author = {Elmenreich, Wilfried and Schnabl, Alexander Sebastian and Schranz, Melanie Marianne},
  title = {{An Artificial Hormone-based Algorithm for Production Scheduling from the Bottom-up}},
  booktitle = {Proceedings of the 13th International Conference on Agents and Artificial Intelligence (ICAART 2021)},
  year = {2021},
  editor = {Ana Paula Rocha and Luc Steels and Jaap van den Herik},
  doi = {10.5220/0010243902960303},
  volume = {1},
  pages = {296--303},
  address = {Setubal},
  month = {2},
  publisher = {SciTePress - Science and Technology Publications},
  url = {https://www.scitepress.org/Papers/2021/102439/102439.pdf},
  }

• K. Chen-Hu, M. J. Fernandez-Getino Garcia, A. M. Tonello, and A. Garcia Armada, “Pilot Pouring in Superimposed Training for Channel Estimation in CB-FMT,” IEEE Transactions on Wireless Communications, vol. 20, iss. 6, p. 3366–3380, 2021. doi:10.1109/TWC.2021.3049530
  [BibTeX] [Abstract] [Download PDF]
  

  Cyclic block filtered multi-tone (CB-FMT) is a waveform that can be efficiently synthesized through a filter-bank in the frequency domain. Although the main principles have been already established, channel estimation has not been addressed yet. This is because of assuming that the existing techniques based on pilot symbol assisted modulation (PSAM), implemented in OFDM-like schemes, can be reused. However, PSAM leads to an undesirable loss of data-rate. In this paper, an alternative method inspired by the superimposed training (ST) concept, namely pilot pouring ST (PPST), is proposed. In PPST, pilots are superimposed over data taking advantage of the particular spectral characteristics of CB-FMT. Exploiting the sub-channel spectrum, the pilot symbols are poured in those resources unused for data transmission. This spectral shaping of pilots is also exploited at the receiver to carry out channel estimation, by enhancing those channel estimates that exhibit a low data interference contribution. Furthermore, a frequency domain resource mapping strategy for the data and poured pilot symbols is proposed to enable an accurate estimation in strongly frequency-selective channels. The parameters of the proposed scheme are optimized to minimize the channel estimation mean squared error (MSE). Finally, several numerical results illustrate the performance advantages of the proposed technique as compared to other alternatives.

  @article{0f4de0c576a752ff0176a9f5a5a20080,
  author = {Chen-Hu, Kun and Fernandez-Getino Garcia, Maria Julia and Tonello, Andrea M. and Garcia Armada, Ana},
  title = {{Pilot Pouring in Superimposed Training for Channel Estimation in CB-FMT}},
  journal = {IEEE Transactions on Wireless Communications},
  year = {2021},
  abstract = {Cyclic block filtered multi-tone (CB-FMT) is a waveform that can be efficiently synthesized through a filter-bank in the frequency domain. Although the main principles have been already established, channel estimation has not been addressed yet. This is because of assuming that the existing techniques based on pilot symbol assisted modulation (PSAM), implemented in OFDM-like schemes, can be reused. However, PSAM leads to an undesirable loss of data-rate. In this paper, an alternative method inspired by the superimposed training (ST) concept, namely pilot pouring ST (PPST), is proposed. In PPST, pilots are superimposed over data taking advantage of the particular spectral characteristics of CB-FMT. Exploiting the sub-channel spectrum, the pilot symbols are poured in those resources unused for data transmission. This spectral shaping of pilots is also exploited at the receiver to carry out channel estimation, by enhancing those channel estimates that exhibit a low data interference contribution. Furthermore, a frequency domain resource mapping strategy for the data and poured pilot symbols is proposed to enable an accurate estimation in strongly frequency-selective channels. The parameters of the proposed scheme are optimized to minimize the channel estimation mean squared error (MSE). Finally, several numerical results illustrate the performance advantages of the proposed technique as compared to other alternatives.},
  doi = {10.1109/TWC.2021.3049530},
  volume = {20},
  number = {6},
  pages = {3366--3380},
  month = {1},
  url = {https://ieeexplore.ieee.org/document/9321746},
  }

• T. Khatib, H. Alwaneh, W. Mabroukeh, Y. Abu-Ghalion, F. Abu-Gadi, A. Assali, W. Elmenreich, and M. Zarour, “Development of DAYSAM: An Educational Smart Phone Game for Preschoolers to Increase Awareness of Renewable Energy,” Sustainability, vol. 13, iss. 1, p. 1–23, 2021. doi:10.3390/su13010433
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a smartphone application game that aims to increase the awareness of preschoolers on renewable energy. The age of the selected preschoolers is in the range of 4-6 years. The game is called DAYSAM, and it aims to increase awareness regarding photovoltaic arrays, wind turbines, mini-hydropower stations, energy efficiency, and risks that polar bears are facing. The game provides two superior features compared to other available games in Arabic language, targeting the same age group. Preschoolers from An-Najah Child Institute are selected to play this game to investigate the impact of this game. The preschoolers’ awareness is tested before and after playing the game using coloring sheets in an unsupervised coloring process. The results show that the proposed game has increased preschooler’s awareness of renewable energy. Before playing the game, none of the preschoolers recognized images like the photovoltaic array or the wind turbine. After playing the game the preschoolers recognized these devices in different situations and shapes. This indicates that such a game can be used as a fun and educational tool in nurseries that have Arabic communication medium to increase awareness of renewable energy.

  @article{0f4de0c778ce24f80178d18f518103ce,
  author = {Khatib, Tamer and Alwaneh, Haneen and Mabroukeh, Wajdi and Abu-Ghalion, Yassmin and Abu-Gadi, Fatima and Assali, Aliaa and Elmenreich, Wilfried and Zarour, Muna},
  title = {{Development of DAYSAM: An Educational Smart Phone Game for Preschoolers to Increase Awareness of Renewable Energy}},
  journal = {Sustainability},
  year = {2021},
  abstract = {This paper presents a smartphone application game that aims to increase the awareness of preschoolers on renewable energy. The age of the selected preschoolers is in the range of 4-6 years. The game is called DAYSAM, and it aims to increase awareness regarding photovoltaic arrays, wind turbines, mini-hydropower stations, energy efficiency, and risks that polar bears are facing. The game provides two superior features compared to other available games in Arabic language, targeting the same age group. Preschoolers from An-Najah Child Institute are selected to play this game to investigate the impact of this game. The preschoolers’ awareness is tested before and after playing the game using coloring sheets in an unsupervised coloring process. The results show that the proposed game has increased preschooler’s awareness of renewable energy. Before playing the game, none of the preschoolers recognized images like the photovoltaic array or the wind turbine. After playing the game the preschoolers recognized these devices in different situations and shapes. This indicates that such a game can be used as a fun and educational tool in nurseries that have Arabic communication medium to increase awareness of renewable energy.},
  doi = {10.3390/su13010433},
  volume = {13},
  number = {1},
  pages = {1--23},
  month = {1},
  url = {https://www.mdpi.com/2071-1050/13/1/433/pdf},
  }

• F. Rauch, W. Elmenreich, R. Hübner, M. Jungmeier, E. Gračner, and R. Sposato, “Designing and Implementing an Interfaculty Elective “Sustainble Development” Course at a University: Concepts, Development and Lessons Learned,” ARISE – Action Research and Innovation in Science Education, vol. 4, iss. 1, p. 33–36, 2021. doi:10.12973/arise/506882
  [BibTeX] [Abstract] [Download PDF]
  

  This paper describes the case of a university course addressing Sustainable Development (SD). This interdisciplinary and interfaculty elective course is meant to serve the purpose of teaching sustainability. At the same time, it is also intended to serve as an instrument for the implementation of sustainability at the University of Klagenfurt in Austria. The paper describes the conception and implementation of an interdisciplinary elective as a first appropriate step to implement SD at the University of Klagenfurt across disciplinary and structural barriers. Furthermore, the paper presents reflections of the course based on a series of interviews with the leading teaching team as well as the team's ongoing reflections. As it turns out: The major challenge is that a system based on individual freedom in research and teaching needs to intervene within its own system to create and initiate a new development.

  @article{0f4de0c77c762076017c78dadcf80015,
  author = {Rauch, Franz and Elmenreich, Wilfried and Hübner, Renate and Jungmeier, Michael and Gračner, Ema and Sposato, Robert},
  title = {{Designing and Implementing an Interfaculty Elective "Sustainble Development" Course at a University: Concepts, Development and Lessons Learned}},
  journal = {ARISE - Action Research and Innovation in Science Education},
  year = {2021},
  abstract = {This paper describes the case of a university course addressing Sustainable Development (SD). This interdisciplinary and interfaculty elective course is meant to serve the purpose of teaching sustainability. At the same time, it is also intended to serve as an instrument for the implementation of sustainability at the University of Klagenfurt in Austria. The paper describes the conception and implementation of an interdisciplinary elective as a first appropriate step to implement SD at the University of Klagenfurt across disciplinary and structural barriers. Furthermore, the paper presents reflections of the course based on a series of interviews with the leading teaching team as well as the team\'s ongoing reflections. As it turns out: The major challenge is that a system based on individual freedom in research and teaching needs to intervene within its own system to create and initiate a new development.},
  doi = {10.12973/arise/506882},
  volume = {4},
  number = {1},
  pages = {33--36},
  url = {https://www.arisejournal.com/index.php/arise/article/view/43},
  }

• P. Mazdin and B. Rinner, “Distributed and Communication-Aware Coalition Formation and Task Assignment in Multi-RobotSystems,” IEEE Access, vol. 9, p. 35088–35100, 2021. doi:10.1109/ACCESS.2021.3061149
  [BibTeX] [Abstract] [Download PDF]
  

  In many missions, multiple robots need to cooperate to complete tasks. The workflow ofthese multi-robot tasks involves forming coalitions of robots, assigning them to available tasks, and jointlyexecuting the tasks. In this article, we investigate such a workflow in an application-independent yetrealistic setting. We abstract the key properties of tasks and robots and propose three distributed coalitionformation and task assignment methods. Distributed methods rely on a timely and accurate exchange of stateinformation in multi-robot systems (MRS). Thus we focus on two important communication aspects: (i)how to achieve consistent coalition formation and task assignment in the presence of communication faults,and (ii) how to reduce the communication effort required for the state updates in the MRS. In particular,we investigate the effect of event-triggered, time-triggered, and hybrid communication. We evaluate ourdistributed approaches in a simulation study usingns-3and compare them with centralized methods anddifferent network conditions. We demonstrate the sensitivity of complex missions to failure-prone MRScommunication and provide robust, effective, and communication-aware methods for coalition formationand task assignment.

  @article{0f4de0c579c556170179c815ef4e0139,
  author = {Mazdin, Petra and Rinner, Bernhard},
  title = {{Distributed and Communication-Aware Coalition Formation and Task Assignment in Multi-RobotSystems}},
  journal = {IEEE Access},
  year = {2021},
  abstract = {In many missions, multiple robots need to cooperate to complete tasks. The workflow ofthese multi-robot tasks involves forming coalitions of robots, assigning them to available tasks, and jointlyexecuting the tasks. In this article, we investigate such a workflow in an application-independent yetrealistic setting. We abstract the key properties of tasks and robots and propose three distributed coalitionformation and task assignment methods. Distributed methods rely on a timely and accurate exchange of stateinformation in multi-robot systems (MRS). Thus we focus on two important communication aspects: (i)how to achieve consistent coalition formation and task assignment in the presence of communication faults,and (ii) how to reduce the communication effort required for the state updates in the MRS. In particular,we investigate the effect of event-triggered, time-triggered, and hybrid communication. We evaluate ourdistributed approaches in a simulation study usingns-3and compare them with centralized methods anddifferent network conditions. We demonstrate the sensitivity of complex missions to failure-prone MRScommunication and provide robust, effective, and communication-aware methods for coalition formationand task assignment.},
  doi = {10.1109/ACCESS.2021.3061149},
  volume = {9},
  pages = {35088--35100},
  url = {https://ieeexplore.ieee.org/document/9360591},
  }

• A. Fuchs, C. Pichler-Koban, A. Pitman, W. Elmenreich, and M. Jungmeier, “Games and Gamification – New Instruments for Communicating Sustainability,” in The Sustainability Communication Reader, F. Weder, L. Krainer, and M. Karmasin, Eds., Wiesbaden: Springer VS, 2021, p. 221–243. doi:10.1007/978-3-658-31883-3_13
  [BibTeX] [Abstract] [Download PDF]
  

  Sustainability is not a single concept, but a bundle of concepts that has broadened significantly in recent decades. Education for Sustainable Development (ESD) must therefore not only impart new knowledge but should also focus on supporting its students in acquiring new competences, both on a personal and an institutional level. Games and gamification can be important instruments for developing these competencies and experimenting in very different situations, simulating different scenarios and experiencing unexpected situations and outcomes.

  @incollection{0f4de0c6790bf0b301790ece71b701c0,
  author = {Fuchs, Anneliese and Pichler-Koban, Christina and Pitman, Arthur and Elmenreich, Wilfried and Jungmeier, Michael},
  title = {{Games and Gamification - New Instruments for Communicating Sustainability}},
  booktitle = {The Sustainability Communication Reader},
  publisher = {Springer VS},
  year = {2021},
  abstract = {Sustainability is not a single concept, but a bundle of concepts that has broadened significantly in recent decades. Education for Sustainable Development (ESD) must therefore not only impart new knowledge but should also focus on supporting its students in acquiring new competences, both on a personal and an institutional level. Games and gamification can be important instruments for developing these competencies and experimenting in very different situations, simulating different scenarios and experiencing unexpected situations and outcomes.},
  doi = {10.1007/978-3-658-31883-3\_13},
  editor = {Franzisca Weder and Larissa Krainer and Matthias Karmasin},
  pages = {221--243},
  address = {Wiesbaden},
  url = {https://mobile.aau.at/publications/fuchs-2021-Games\_and\_Gamification\_New\_Instruments\_for\_Communicating\_Sustainability.pdf},
  }

• M. Gutmann and B. Rinner, “Mission Specification and Execution of Multidrone Systems.,” in Proceedings of the Design, Automation and Test in Europe Conference, New York, 2021, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c7773cabdb01773dc0e30a002a,
  author = {Gutmann, Markus and Rinner, Bernhard},
  title = {{Mission Specification and Execution of Multidrone Systems.}},
  booktitle = {Proceedings of the Design, Automation and Test in Europe Conference},
  year = {2021},
  pages = {1--6},
  address = {New York},
  publisher = {Association for Computing Machinery (ACM)},
  url = {https://www.date-conference.com/},
  }

• B. Rinner, C. Bettstetter, H. Hellwagner, and S. M. Weiss, “Multidrone Systems: More Than the Sum of the Parts,” Computer, vol. 54, iss. 5, p. 34–43, 2021. doi:10.1109/MC.2021.3058441
  [BibTeX] [Abstract] [Download PDF]
  

  Now that drones have evolved from bulky platforms to agile devices, a challenge is to combine multiple drones into an integrated autonomous system, offering functionality that individual drones cannot achieve. Such multidrone systems require connectivity, communication, and coordination. We discuss these building blocks along with case studies and lessons learned.

  @article{0f4de0c579c556170179c804d3cb0111,
  author = {Rinner, Bernhard and Bettstetter, Christian and Hellwagner, Hermann and Weiss, Stephan Michael},
  title = {{Multidrone Systems: More Than the Sum of the Parts}},
  journal = {Computer},
  year = {2021},
  abstract = {Now that drones have evolved from bulky platforms to agile devices, a challenge is to combine multiple drones into an integrated autonomous system, offering functionality that individual drones cannot achieve. Such multidrone systems require connectivity, communication, and coordination. We discuss these building blocks along with case studies and lessons learned.},
  doi = {10.1109/MC.2021.3058441},
  volume = {54},
  number = {5},
  pages = {34--43},
  url = {https://ieeexplore.ieee.org/document/9427128},
  }

2020

• N. A. Letizia and A. M. Tonello, “Segmented Generative Networks: Data Generation in the Uniform Probability Space,” IEEE Transactions on Neural Networks and Learning Systems, 2020. doi:10.1109/TNNLS.2020.3042380
  [BibTeX] [Abstract] [Download PDF]
  

  Recent advancements in generative networks have shown that it is possible to produce real-world-like data using deep neural networks. Some implicit probabilistic models that follow a stochastic procedure to directly generate data have been introduced to overcome the intractability of the posterior distribution. However, the ability to model data requires deep knowledge and understanding of its statistical dependence–which can be preserved and studied in appropriate latent spaces. In this article, we present a segmented generation process through linear and nonlinear manipulations in the same-dimensional latent space where data are projected to. Inspired by the known stochastic method to generate correlated data, we develop a segmented approach for the generation of dependent data, exploiting the concept of copula. The generation process is split into two frames: one embedding the covariance or copula information in the uniform probability space, and the other embedding the marginal distribution information in the sample domain. The proposed network structure, referred to as a segmented generative network (SGN), also provides an empirical method to sample directly from implicit copulas. To show its generality, we evaluate the presented approach in three application scenarios: a toy example, handwritten digits, and face image generation.

  @article{0f4de0c576a752ff0176a9cd4e580029,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Segmented Generative Networks: Data Generation in the Uniform Probability Space}},
  journal = {IEEE Transactions on Neural Networks and Learning Systems},
  year = {2020},
  abstract = {Recent advancements in generative networks have shown that it is possible to produce real-world-like data using deep neural networks. Some implicit probabilistic models that follow a stochastic procedure to directly generate data have been introduced to overcome the intractability of the posterior distribution. However, the ability to model data requires deep knowledge and understanding of its statistical dependence--which can be preserved and studied in appropriate latent spaces. In this article, we present a segmented generation process through linear and nonlinear manipulations in the same-dimensional latent space where data are projected to. Inspired by the known stochastic method to generate correlated data, we develop a segmented approach for the generation of dependent data, exploiting the concept of copula. The generation process is split into two frames: one embedding the covariance or copula information in the uniform probability space, and the other embedding the marginal distribution information in the sample domain. The proposed network structure, referred to as a segmented generative network (SGN), also provides an empirical method to sample directly from implicit copulas. To show its generality, we evaluate the presented approach in three application scenarios: a toy example, handwritten digits, and face image generation.},
  doi = {10.1109/TNNLS.2020.3042380},
  month = {12},
  url = {https://ieeexplore.ieee.org/document/9298471},
  }

• A. Vogell, U. Schilcher, and C. Bettstetter, “Deadlocks in the synchronization of pulse-coupled oscillators on star graphs,” Physical Review E, vol. 102, iss. 6, 2020. doi:10.1103/PhysRevE.102.062211
  [BibTeX] [Abstract] [Download PDF]
  

  Some convergence proofs for systems of oscillators with inhibitory pulse coupling assume that all initial phases reside in one half of their domain. A violation of this assumption can trigger deadlocks that prevent synchronization. We analyze the conditions for such deadlocks in star graphs, characterizing the domain of initial states leading to deadlocks and deriving its fraction of the state space. The results show that convergence is feasible from a wider range of initial phases. The same type of deadlock occurs in random graphs.

  @article{0f4de0c4766460620176660e994e01d1,
  author = {Vogell, Arke and Schilcher, Udo and Bettstetter, Christian},
  title = {{Deadlocks in the synchronization of pulse-coupled oscillators on star graphs}},
  journal = {Physical Review E},
  year = {2020},
  abstract = {Some convergence proofs for systems of oscillators with inhibitory pulse coupling assume that all initial phases reside in one half of their domain. A violation of this assumption can trigger deadlocks that prevent synchronization. We analyze the conditions for such deadlocks in star graphs, characterizing the domain of initial states leading to deadlocks and deriving its fraction of the state space. The results show that convergence is feasible from a wider range of initial phases. The same type of deadlock occurs in random graphs.},
  doi = {10.1103/PhysRevE.102.062211},
  volume = {102},
  number = {6},
  month = {12},
  url = {https://link.aps.org/doi/10.1103/PhysRevE.102.062211},
  }

• C. Linen, M. Platzner, and B. Rinner, “ReconROS: Flexible Hardware Acceleration for ROS2 Applications,” in 2020 International Conference on Field-Programmable Technology (ICFPT), Piscataway (NJ), 2020, p. 268–276. doi:10.1109/ICFPT51103.2020.00046
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c57e2d5ded017e2ea825b60027,
  author = {Linen, Christian and Platzner, Marco and Rinner, Bernhard},
  title = {{ReconROS: Flexible Hardware Acceleration for ROS2 Applications}},
  booktitle = {2020 International Conference on Field-Programmable Technology (ICFPT)},
  year = {2020},
  doi = {10.1109/ICFPT51103.2020.00046},
  pages = {268--276},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9415549},
  }

• M. Jdeed, M. M. Schranz, and W. Elmenreich, “A study using the low-cost swarm robotics platform spiderino in education,” Computers and Education Open, vol. 1, p. 1–9, 2020. doi:10.1016/j.caeo.2020.100017
  [BibTeX] [Abstract] [Download PDF]
  

  The demand on STEM (Science, Technology, Engineering, and Mathematics)-educated and enthusiastic employees is growing continuously. It is well known that the challenge to motivate students for a technical study needs to be taken already during compulsory schooling. Hands-on robotic experiments, referring to a topic that is well-known and connected to many future technology concepts, are one possibility to increase the attractiveness of technological applications. Many platforms have already been developed and used in education, including humanoid robots (e.g., the NAO robot), swarm robotic platforms (e.g., the e-Puck or the Spiderino) and the LEGO Mindstorm series. The Spiderino robot, being an autonomous robot build upon a toy robot platform, offers an excellent possibility, also in fusing different types of technological domains: 3D printing, robotics, programming, sensors, actuators and swarm intelligence — highly important topics packaged in a toy-like platform.In this work we study the effect of using the Spiderino swarm robotic platform in education. In particular, we applied this platform in a classroom workshop format. We evaluate if this workshop positively influences students on a personal level and increase their interest in STEM subjects, specifically computer science. Therefore, we propose an approach to measure such effects by conducting a quantitative student and a qualitative teacher questionnaire. For that matter, 5 practical workshops, 4 h each, have been done with 69 students, 14 to 18 years old. The results show a remarkable acceptance of using swarm robotic platforms as an effective educational tool: Easy-to-use, entertaining, and increasing motivation to solve tasks have been observed during the interaction between the students and the robot.

  @article{0f4de0c4768d9328017690938a1f005e,
  author = {Jdeed, Midhat and Schranz, Melanie Marianne and Elmenreich, Wilfried},
  title = {{A study using the low-cost swarm robotics platform spiderino in education}},
  journal = {Computers and Education Open},
  year = {2020},
  abstract = {The demand on STEM (Science, Technology, Engineering, and Mathematics)-educated and enthusiastic employees is growing continuously. It is well known that the challenge to motivate students for a technical study needs to be taken already during compulsory schooling. Hands-on robotic experiments, referring to a topic that is well-known and connected to many future technology concepts, are one possibility to increase the attractiveness of technological applications. Many platforms have already been developed and used in education, including humanoid robots (e.g., the NAO robot), swarm robotic platforms (e.g., the e-Puck or the Spiderino) and the LEGO Mindstorm series. The Spiderino robot, being an autonomous robot build upon a toy robot platform, offers an excellent possibility, also in fusing different types of technological domains: 3D printing, robotics, programming, sensors, actuators and swarm intelligence — highly important topics packaged in a toy-like platform.In this work we study the effect of using the Spiderino swarm robotic platform in education. In particular, we applied this platform in a classroom workshop format. We evaluate if this workshop positively influences students on a personal level and increase their interest in STEM subjects, specifically computer science. Therefore, we propose an approach to measure such effects by conducting a quantitative student and a qualitative teacher questionnaire. For that matter, 5 practical workshops, 4 h each, have been done with 69 students, 14 to 18 years old. The results show a remarkable acceptance of using swarm robotic platforms as an effective educational tool: Easy-to-use, entertaining, and increasing motivation to solve tasks have been observed during the interaction between the students and the robot.},
  doi = {10.1016/j.caeo.2020.100017},
  volume = {1},
  pages = {1--9},
  month = {12},
  url = {https://pdf.sciencedirectassets.com/777244/1-s2.0-S2666557320X00024/1-s2.0-S2666557320300033/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBkaCXVzLWVhc3QtMSJHMEUCIQCkH\%2B3Z\%2FmBKIRqlcWa0vIbCgHH1i63c7zZ78aIzufthIQIgPLB2Q2Ar3l06Ojct30tHKDlE3cAk0Us5UMbR9rB8B},
  }

• M. De Piante, A. M. Tonello, M. Schiozzi, and R. Rinaldo, “Indoor Path Loss Statistical Characterization and Modeling for the Broad VHF-UHF Band,” IEEE Antennas and Wireless Propagation Letters, vol. 19, iss. 12, p. 2315–2319, 2020. doi:10.1109/LAWP.2020.3031038
  [BibTeX] [Abstract] [Download PDF]
  

  In this letter, an investigation of the very high frequency–ultrahigh frequency (VHF–UHF) wireless broadband indoor channel is carried out. In particular, a wireless channel measurement campaign in an indoor environment has been made, in order to characterize the path loss in a broad set of frequencies. The wireless channel is sounded by using a set of discone wideband antennas and a vector network analyzer set to sweep the transmitted signal in the considered band. The measurement results lead to the derivation of a well specified indoor path loss exponent statistical model that takes into account the frequency dependence as well as the distance between the antennas. Three different statistical model refinements are presented, and each of them shows an enhanced ability to predict the path loss.

  @article{0f4de0c576a752ff0176a9c12f4d0007,
  author = {De Piante, Marco and Tonello, Andrea M. and Schiozzi, Michele and Rinaldo, Roberto},
  title = {{Indoor Path Loss Statistical Characterization and Modeling for the Broad VHF-UHF Band}},
  journal = {IEEE Antennas and Wireless Propagation Letters},
  year = {2020},
  abstract = {In this letter, an investigation of the very high frequency–ultrahigh frequency (VHF–UHF) wireless broadband indoor channel is carried out. In particular, a wireless channel measurement campaign in an indoor environment has been made, in order to characterize the path loss in a broad set of frequencies. The wireless channel is sounded by using a set of discone wideband antennas and a vector network analyzer set to sweep the transmitted signal in the considered band. The measurement results lead to the derivation of a well specified indoor path loss exponent statistical model that takes into account the frequency dependence as well as the distance between the antennas. Three different statistical model refinements are presented, and each of them shows an enhanced ability to predict the path loss.},
  doi = {10.1109/LAWP.2020.3031038},
  volume = {19},
  number = {12},
  pages = {2315--2319},
  month = {12},
  url = {https://ieeexplore.ieee.org/document/9224130},
  }

• A. Barcis and C. Bettstetter, “Sandsbots: Robots That Sync and Swarm,” IEEE Access, vol. 8, p. 218752–218764, 2020. doi:10.1109/ACCESS.2020.3041393
  [BibTeX] [Abstract] [Download PDF]
  

  This article presents a multi-robot system that forms emergent space-time patterns. Inspired by the theory of swarmalators, in which synchronization and swarming of agents are mutually coupled, we propose a robot-suitable model for coordination in time and space. The approach is evaluated by simulations and demonstrated as proof of concept using small robots and drones. The novel building blocks comprise a time-discrete swarm aggregation model—which works robustly with low update rates in systems with communication delays—and specific functions that couple this spatial model to a discrete temporal coordination model, resulting in an overall discrete spatio-temporal coordination model.

  @article{0f4de0c4765f39db017660e231050024,
  author = {Barcis, Agata and Bettstetter, Christian},
  title = {{Sandsbots: Robots That Sync and Swarm}},
  journal = {IEEE Access},
  year = {2020},
  abstract = {This article presents a multi-robot system that forms emergent space-time patterns. Inspired by the theory of swarmalators, in which synchronization and swarming of agents are mutually coupled, we propose a robot-suitable model for coordination in time and space. The approach is evaluated by simulations and demonstrated as proof of concept using small robots and drones. The novel building blocks comprise a time-discrete swarm aggregation model—which works robustly with low update rates in systems with communication delays—and specific functions that couple this spatial model to a discrete temporal coordination model, resulting in an overall discrete spatio-temporal coordination model.},
  doi = {10.1109/ACCESS.2020.3041393},
  volume = {8},
  pages = {218752--218764},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/9272969},
  }

• H. Bousbiat, C. Klemenjak, and W. Elmenreich, “Exploring Time Series Imaging for Load Disaggregation,” in BuildSys ’20: Proceedings of the 7th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation, 2020, p. 254–257. doi:10.1145/3408308.3427975
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c5768d93dc01769002373a00b0,
  author = {Bousbiat, Hafsa and Klemenjak, Christoph and Elmenreich, Wilfried},
  title = {{Exploring Time Series Imaging for Load Disaggregation}},
  booktitle = {BuildSys '20: Proceedings of the 7th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation},
  year = {2020},
  doi = {10.1145/3408308.3427975},
  pages = {254--257},
  month = {11},
  publisher = {ACM New York},
  url = {https://mobile.aau.at/publications/bousbiat-buildsys20-imaging.pdf},
  }

• J. Gois, C. Klemenjak, and L. Pereira, “On the Relationship between Seasons of the Year and Disaggregation Performance,” in NILM’20: Proceedings of the 5th International Workshop on Non-Intrusive Load Monitoring, New York, NY, 2020, p. 70–74. doi:10.1145/3427771.3427856
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c476cb5f4b0176cd6a39e30100,
  author = {Gois, João and Klemenjak, Christoph and Pereira, Lucas},
  title = {{On the Relationship between Seasons of the Year and Disaggregation Performance}},
  booktitle = {NILM'20: Proceedings of the 5th International Workshop on Non-Intrusive Load Monitoring},
  year = {2020},
  doi = {10.1145/3427771.3427856},
  pages = {70--74},
  address = {New York, NY},
  month = {11},
  publisher = {ACM - New York},
  url = {https://mobile.aau.at/publications/klemenjak-nilm20-seasonality.pdf},
  }

• R. Jones, C. Klemenjak, S. Makonin, and I. V. Bajić, “Stop: Exploring Bayesian Surprise to Better Train NILM,” in NILM’20: Proceedings of the 5th International Workshop on Non-Intrusive Load Monitoring, New York, NY, 2020, p. 39–43. doi:10.1145/3427771.3429388
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c476cb5f4b0176cd63e92500cd,
  author = {Jones, Richard and Klemenjak, Christoph and Makonin, Stephen and Bajić, Ivan V.},
  title = {{Stop: Exploring Bayesian Surprise to Better Train NILM}},
  booktitle = {NILM'20: Proceedings of the 5th International Workshop on Non-Intrusive Load Monitoring},
  year = {2020},
  doi = {10.1145/3427771.3429388},
  pages = {39--43},
  address = {New York, NY},
  month = {11},
  publisher = {ACM - New York},
  url = {https://mobile.aau.at/publications/klemenjak-nilm20-surprise.pdf},
  }

• B. Salamat and A. M. Tonello, “A Swah Mass Pendulum with Passivity-Based Control,” IEEE Robotics and Automation Letters, vol. 61, p. 199–206, 2020. doi:10.1109/LRA.2020.3037861
  [BibTeX] [Abstract] [Download PDF]
  

  We propose a mechanical system named swash mass pendulum (SMP) with application in robotics, and we develop a passivity-based control approach. The SMP is a pendulum made of a rigid shaft connected to a pair of cross-shafts where four swash masses can move under the action of servo mechanisms. The control objective is to stabilize the pendulum at a desired rest orientation. The regulation at the desired orientation is obtained via energy shaping that prevents the solution of partial differential equations. The derivation of the control law consists of a) partial feedback linearization under input coupling, b) a proportional plus integral (PI) controller acting on two new passive outputs. The performance of the controller is assessed by both simulations and experimental results, showing the effectiveness of the control design for the novel proposed pendulum.

  @article{0f4de0c675f314400175f43f8cf20135,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{A Swah Mass Pendulum with Passivity-Based Control}},
  journal = {IEEE Robotics and Automation Letters},
  year = {2020},
  abstract = {We propose a mechanical system named swash mass pendulum (SMP) with application in robotics, and we develop a passivity-based control approach. The SMP is a pendulum made of a rigid shaft connected to a pair of cross-shafts where four swash masses can move under the action of servo mechanisms. The control objective is to stabilize the pendulum at a desired rest orientation. The regulation at the desired orientation is obtained via energy shaping that prevents the solution of partial differential equations. The derivation of the control law consists of a) partial feedback linearization under input coupling, b) a proportional plus integral (PI) controller acting on two new passive outputs. The performance of the controller is assessed by both simulations and experimental results, showing the effectiveness of the control design for the novel proposed pendulum. },
  doi = {10.1109/LRA.2020.3037861},
  volume = {61},
  pages = {199--206},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/9258389},
  }

• W. Elmenreich, “Game Engineering for Hybrid Board Games,” in Mixed Reality and Games, Bielefeld, 2020, p. 49–60. doi:10.14361/9783839453292-007
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c7773cabdb01773e3a6d9000d3,
  author = {Elmenreich, Wilfried},
  title = {{Game Engineering for Hybrid Board Games}},
  booktitle = {Mixed Reality and Games},
  year = {2020},
  editor = {Felix Schniz and Daniela Bruns and Sonja Gabriel and Gerhard Pölsterl and Emir Bektić and Florian Kelle},
  doi = {10.14361/9783839453292-007},
  pages = {49--60},
  address = {Bielefeld},
  month = {11},
  publisher = {transcript},
  url = {https://mobile.aau.at/publications/elmenreich-2020-Game\_Engineering\_Hybrid\_Board\_Games-Preprint.pdf},
  }

• A. Reinhardt and C. Klemenjak, “Device-Free User Activity Detection using Non-Intrusive Load Monitoring: A Case Study,” in DFHS’20: Proceedings of the 2nd ACM Workshop on Device-Free Human Sensing, New York, NY, 2020, p. 1–5. doi:10.1145/3427772.3429391
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c476cb5f4b0176cd7078660129,
  author = {Reinhardt, Andreas and Klemenjak, Christoph},
  title = {{Device-Free User Activity Detection using Non-Intrusive Load Monitoring: A Case Study}},
  booktitle = {DFHS'20: Proceedings of the 2nd ACM Workshop on Device-Free Human Sensing},
  year = {2020},
  doi = {10.1145/3427772.3429391},
  pages = {1--5},
  address = {New York, NY},
  month = {11},
  publisher = {ACM - New York},
  url = {https://mobile.aau.at/publications/klemenjak-dfhs20-niad.pdf},
  }

• H. Hamann, M. M. Schranz, W. Elmenreich, V. Trianni, C. Pinciroli, N. Bredeche, and E. Ferrante, “Editorial: Designing Self-Organization in the Physical Realm,” Frontiers in Robotics and AI, vol. 7, p. 1–3, 2020. doi:10.3389/frobt.2020.597859
  [BibTeX] [Abstract] [Download PDF]
  

  The design and deployment of decentralized systems can benefit from self-organization as it introduces key features, such as resilience, scalability, and adaptivity to dynamic environments. However, whenever self-organization was demonstrated on physical platforms (e.g., robot swarms), this was performed mostly within controlled laboratory conditions. The real world comes with severe requirements, calling for robust design methodologies, their standardization, and validation via benchmarking toolsets. With this Research Topic, we collect, benchmark, and survey novel approaches to push self-organization toward real-world applications, focusing on embodied artificial systems, such as multi-robot, cyber-physical, and socio-technical systems.

  @article{0f4de0c5768d93dc0176901fde2c00d4,
  author = {Hamann, Heiko and Schranz, Melanie Marianne and Elmenreich, Wilfried and Trianni, Vito and Pinciroli, Carlo and Bredeche, Nicolas and Ferrante, Eliseo},
  title = {{Editorial: Designing Self-Organization in the Physical Realm}},
  journal = {Frontiers in Robotics and AI},
  year = {2020},
  abstract = {The design and deployment of decentralized systems can benefit from self-organization as it introduces key features, such as resilience, scalability, and adaptivity to dynamic environments. However, whenever self-organization was demonstrated on physical platforms (e.g., robot swarms), this was performed mostly within controlled laboratory conditions. The real world comes with severe requirements, calling for robust design methodologies, their standardization, and validation via benchmarking toolsets. With this Research Topic, we collect, benchmark, and survey novel approaches to push self-organization toward real-world applications, focusing on embodied artificial systems, such as multi-robot, cyber-physical, and socio-technical systems.},
  doi = {10.3389/frobt.2020.597859},
  volume = {7},
  pages = {1--3},
  month = {11},
  url = {https://www.frontiersin.org/articles/10.3389/frobt.2020.597859/full},
  }

• E. Sharma, M. Mussetta, and W. Elmenreich, “Investigating the impact of data quality on the energy yield forecast using data mining techniques,” in 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), Piscataway (NJ), 2020, p. 599–603. doi:10.1109/ISGT-Europe47291.2020.9248920
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c47664606201766686aa3a0223,
  author = {Sharma, Ekanki and Mussetta, Marco and Elmenreich, Wilfried},
  title = {{Investigating the impact of data quality on the energy yield forecast using data mining techniques}},
  booktitle = { 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)},
  year = {2020},
  doi = {10.1109/ISGT-Europe47291.2020.9248920},
  pages = {599--603},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://mobile.aau.at/publications/sharma-2020-investigating\_the\_impact\_of\_data\_quality\_on\_the\_energy\_yield\_forecast\_using\_data\_mining\_techniques.pdf},
  }

• M. Zajc, A. Mujcic, A. M. Tonello, V. Delić, M. Koprivica, S. Rimac Drlje, U. Burnik, and N. Suljanovic, “ICT engineering study programs to meet modern society needs: Erasmus+ project BENEFIT,” in 29th International Electrotechnical and Computer Science Conference (ERK 2020), 2020, p. 393–396.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c6792ffd4e0179314306da003d,
  author = {Zajc, Matej and Mujcic, Aljo and Tonello, Andrea M. and Delić, Vlado and Koprivica, Mladen and Rimac Drlje, Snježana and Burnik, Urban and Suljanovic, Nermin},
  title = {{ICT engineering study programs to meet modern society needs: Erasmus+ project BENEFIT}},
  booktitle = {29th International Electrotechnical and Computer Science Conference (ERK 2020)},
  year = {2020},
  pages = {393--396},
  month = {9},
  url = {https://erk.fe.uni-lj.si/2020/program.php},
  }

• M. M. Schranz, G. A. Di Caro, T. Schmickl, W. Elmenreich, F. Arvin, A. Şekercioğlu, and M. Sende, “Swarm Intelligence and Cyber-Physical Systems: Concepts, Challenges and Future Trends,” Swarm and Evolutionary Computation, vol. 60, p. 1–17, 2020. doi:10.1016/j.swevo.2020.100762
  [BibTeX] [Abstract] [Download PDF]
  

  Swarm Intelligence (SI) is a popular multi-agent framework that has been originally inspired by swarm behaviors observed in natural systems, such as ant and bee colonies. In a system designed after swarm intelligence, each agent acts autonomously, reacts on dynamic inputs, and, implicitly or explicitly, works collaboratively with other swarm members without a central control. The system as a whole is expected to exhibit global patterns and behaviors. Although well-designed swarms can show advantages in adaptability, robustness, and scalability, it must be noted that SI system have not really found their way from lab demonstrations to real-world applications, so far. This is particularly true for embodied SI, where the agents are physical entities, such as in swarm robotics scenarios. In this paper, we start from these observations, outline different definitions and characterizations, and then discuss present challenges in the perspective of future use of swarm intelligence. These include application ideas, research topics, and new sources of inspiration from biology, physics, and human cognition. To motivate future applications of swarms, we make use of the notion of cyber-physical systems (CPS). CPSs are a way to encompass the large spectrum of technologies including robotics, internet of things (IoT), Systems on Chip (SoC), embedded systems, and so on. Thereby, we give concrete examples for visionary applications and their challenges representing the physical embodiment of swarm intelligence in autonomous driving and smart traffic, emergency response, environmental monitoring, electric energy grids, space missions, medical applications, and human networks. We do not aim to provide new solutions for the swarm intelligence or CPS community, but rather build a bridge between these two communities. This allows us to view the research problems of swarm intelligence from a broader perspective and motivate future research activities in modeling, design, validation/verification, and human-in-the-loop concepts.

  @article{0f4de0c67470a091017472f536c90062,
  author = {Schranz, Melanie Marianne and Di Caro, Gianni A. and Schmickl, Thomas and Elmenreich, Wilfried and Arvin, Farshad and Şekercioğlu, Ahmet and Sende, Micha},
  title = {{Swarm Intelligence and Cyber-Physical Systems: Concepts, Challenges and Future Trends}},
  journal = {Swarm and Evolutionary Computation},
  year = {2020},
  abstract = {Swarm Intelligence (SI) is a popular multi-agent framework that has been originally inspired by swarm behaviors observed in natural systems, such as ant and bee colonies. In a system designed after swarm intelligence, each agent acts autonomously, reacts on dynamic inputs, and, implicitly or explicitly, works collaboratively with other swarm members without a central control. The system as a whole is expected to exhibit global patterns and behaviors. Although well-designed swarms can show advantages in adaptability, robustness, and scalability, it must be noted that SI system have not really found their way from lab demonstrations to real-world applications, so far. This is particularly true for embodied SI, where the agents are physical entities, such as in swarm robotics scenarios. In this paper, we start from these observations, outline different definitions and characterizations, and then discuss present challenges in the perspective of future use of swarm intelligence. These include application ideas, research topics, and new sources of inspiration from biology, physics, and human cognition. To motivate future applications of swarms, we make use of the notion of cyber-physical systems (CPS). CPSs are a way to encompass the large spectrum of technologies including robotics, internet of things (IoT), Systems on Chip (SoC), embedded systems, and so on. Thereby, we give concrete examples for visionary applications and their challenges representing the physical embodiment of swarm intelligence in autonomous driving and smart traffic, emergency response, environmental monitoring, electric energy grids, space missions, medical applications, and human networks. We do not aim to provide new solutions for the swarm intelligence or CPS community, but rather build a bridge between these two communities. This allows us to view the research problems of swarm intelligence from a broader perspective and motivate future research activities in modeling, design, validation/verification, and human-in-the-loop concepts.},
  doi = {10.1016/j.swevo.2020.100762},
  volume = {60},
  pages = {1--17},
  month = {8},
  url = {https://www.sciencedirect.com/science/article/pii/S2210650220304156},
  }

• S. Borkotoky, U. Schilcher, and C. Raffelsberger, “Application-Layer Coding with Intermittent Feedback Under Delay and Duty-Cycle Constraints,” in Proceedings of the IEEE International Conference on Communications (ICC) 2020, Piscataway (NJ), 2020, p. 1–6. doi:10.1109/ICC40277.2020.9148646
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c573fa2e370173fba17c420019,
  author = {Borkotoky, Siddhartha and Schilcher, Udo and Raffelsberger, Christian},
  title = {{Application-Layer Coding with Intermittent Feedback Under Delay and Duty-Cycle Constraints}},
  booktitle = {Proceedings of the IEEE International Conference on Communications (ICC) 2020},
  year = {2020},
  doi = {10.1109/ICC40277.2020.9148646},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {7},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9148646},
  }

• U. Schilcher, S. Borkotoky, J. F. Schmidt, and C. Bettstetter, “Outage Duration in Poisson Networks and its Application to Erasure Codes,” in Proceedings of the IEEE International Conference on Communications (ICC) 2020, Piscataway (NJ), 2020, p. 1–4. doi:10.1109/ICC40277.2020.9149297
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c472def06d0172e131a01f00f5,
  author = {Schilcher, Udo and Borkotoky, Siddhartha and Schmidt, Jorge Friedrich and Bettstetter, Christian},
  title = {{Outage Duration in Poisson Networks and its Application to Erasure Codes}},
  booktitle = {Proceedings of the IEEE International Conference on Communications (ICC) 2020},
  year = {2020},
  doi = {10.1109/ICC40277.2020.9149297},
  pages = {1--4},
  address = {Piscataway (NJ)},
  month = {7},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9149297},
  }

• A. Faustine, L. Pereira, and C. Klemenjak, “Adaptive Weighted Recurrence Graphs for Appliance Recognition in Non-Intrusive Load Monitoring,” IEEE Transactions on Smart Grid, p. 398–406, 2020. doi:10.1109/TSG.2020.3010621
  [BibTeX] [Abstract] [Download PDF]
  

  To this day, hyperparameter tuning remains a cumbersome task in Non-Intrusive Load Monitoring (NILM) research, as researchers and practitioners are forced to invest a considerable amount of time in this task. This paper proposes adaptive weighted recurrence graph blocks (AWRG) for appliance feature representation in event-based NILM. An AWRG block can be combined with traditional deep neural network architectures such as Convolutional Neural Networks for appliance recognition. Our approach transforms one cycle per activation current into an weighted recurrence graph and treats the associated hyper-parameters as learn-able parameters. We evaluate our technique on two energy datasets, the industrial dataset LILACD and the residential PLAID dataset. The outcome of our experiments shows that transforming current waveforms into weighted recurrence graphs provides a better feature representation and thus, improved classification results. It is concluded that our approach can guarantee uniqueness of appliance features, leading to enhanced generalisation abilities when compared to the widely researched V-I image features. Furthermore, we show that the initialisation parameters of the AWRG’s have a significant impact on the performance and training convergence.

  @article{0f4de0c6737448ea017377d4df84007b,
  author = {Faustine, Anthony and Pereira, Lucas and Klemenjak, Christoph},
  title = {{Adaptive Weighted Recurrence Graphs for Appliance Recognition in Non-Intrusive Load Monitoring}},
  journal = {IEEE Transactions on Smart Grid},
  year = {2020},
  abstract = {To this day, hyperparameter tuning remains a cumbersome task in Non-Intrusive Load Monitoring (NILM) research, as researchers and practitioners are forced to invest a considerable amount of time in this task. This paper proposes adaptive weighted recurrence graph blocks (AWRG) for appliance feature representation in event-based NILM. An AWRG block can be combined with traditional deep neural network architectures such as Convolutional Neural Networks for appliance recognition. Our approach transforms one cycle per activation current into an weighted recurrence graph and treats the associated hyper-parameters as learn-able parameters. We evaluate our technique on two energy datasets, the industrial dataset LILACD and the residential PLAID dataset. The outcome of our experiments shows that transforming current waveforms into weighted recurrence graphs provides a better feature representation and thus, improved classification results. It is concluded that our approach can guarantee uniqueness of appliance features, leading to enhanced generalisation abilities when compared to the widely researched V-I image features. Furthermore, we show that the initialisation parameters of the AWRG’s have a significant impact on the performance and training convergence.},
  doi = {10.1109/TSG.2020.3010621},
  pages = {398--406},
  month = {7},
  url = {https://ieeexplore.ieee.org/abstract/document/9144492},
  }

• S. Hayat, E. Yanmaz, C. Bettstetter, and T. X. Brown, “Multi-objective drone path planning for search and rescue with quality-of-service requirements,” Autonomous Robots, vol. 44, 2020. doi:10.1007/s10514-020-09926-9
  [BibTeX] [Abstract] [Download PDF]
  

  We incorporate communication into the multi-UAV path planning problem for search and rescue missions to enable dynamic task allocation via information dissemination. Communication is not treated as a constraint but a mission goal. While achieving this goal, our aim is to avoid compromising the area coverage goal and the overall mission time. We define the mission tasks as: search, inform, and monitor at the best possible link quality. Building on our centralized simultaneous inform and connect (SIC) path planning strategy, we propose two adaptive strategies: (1) SIC with QoS (SICQ): optimizes search, inform, and monitor tasks simultaneously and (2) SIC following QoS (SIC+): first optimizes search and inform tasks together and then finds the optimum positions for monitoring. Both strategies utilize information as soon as it becomes available to determine UAV tasks. The strategies can be tuned to prioritize certain tasks in relation to others. We illustrate that more tasks can be performed in the given mission time by efficient incorporation of communication in the path design. We also observe that the quality of the resultant paths improves in terms of connectivity.

  @article{0f4de0c4765f39db017660efe6660045,
  author = {Hayat, Samira and Yanmaz, Evsen and Bettstetter, Christian and Brown, Timothy X},
  title = {{Multi-objective drone path planning for search and rescue with quality-of-service requirements}},
  journal = {Autonomous Robots},
  year = {2020},
  abstract = {We incorporate communication into the multi-UAV path planning problem for search and rescue missions to enable dynamic task allocation via information dissemination. Communication is not treated as a constraint but a mission goal. While achieving this goal, our aim is to avoid compromising the area coverage goal and the overall mission time. We define the mission tasks as: search, inform, and monitor at the best possible link quality. Building on our centralized simultaneous inform and connect (SIC) path planning strategy, we propose two adaptive strategies: (1) SIC with QoS (SICQ): optimizes search, inform, and monitor tasks simultaneously and (2) SIC following QoS (SIC+): first optimizes search and inform tasks together and then finds the optimum positions for monitoring. Both strategies utilize information as soon as it becomes available to determine UAV tasks. The strategies can be tuned to prioritize certain tasks in relation to others. We illustrate that more tasks can be performed in the given mission time by efficient incorporation of communication in the path design. We also observe that the quality of the resultant paths improves in terms of connectivity.},
  doi = {10.1007/s10514-020-09926-9},
  volume = {44},
  month = {7},
  url = {https://link.springer.com/article/10.1007\%2Fs10514-020-09926-9},
  }

• U. Schilcher, J. F. Schmidt, M. K. Atiq, and C. Bettstetter, “Autocorrelation and Coherence Time of Interference in Poisson Networks,” IEEE Transactions on Mobile Computing, vol. 19, iss. 7, p. 1506–1518, 2020. doi:10.1109/TMC.2019.2912373
  [BibTeX] [Abstract] [Download PDF]
  

  This article takes an analytical approach to investigate the temporal dynamics of interference in wireless networks. We propose a framework to calculate the autocorrelation of interference in Poisson networks and derive closed-form expressions for the case of Nakagami fading. The framework takes three correlation sources into account: the location of interferers, the wireless channel, and the data traffic. We introduce the interference coherence time—in analogy to the well-established channel coherence time—and show how its basic qualitative behavior depends on the source of correlation. The insights gained can be useful in the design of medium access control and retransmission protocols.

  @article{0f4de0c672a64a530172a7e01ffd008c,
  author = {Schilcher, Udo and Schmidt, Jorge Friedrich and Atiq, Mahin Khushbakht and Bettstetter, Christian},
  title = {{Autocorrelation and Coherence Time of Interference in Poisson Networks}},
  journal = {IEEE Transactions on Mobile Computing},
  year = {2020},
  abstract = {This article takes an analytical approach to investigate the temporal dynamics of interference in wireless networks. We propose a framework to calculate the autocorrelation of interference in Poisson networks and derive closed-form expressions for the case of Nakagami fading. The framework takes three correlation sources into account: the location of interferers, the wireless channel, and the data traffic. We introduce the interference coherence time—in analogy to the well-established channel coherence time—and show how its basic qualitative behavior depends on the source of correlation. The insights gained can be useful in the design of medium access control and retransmission protocols.},
  doi = {10.1109/TMC.2019.2912373},
  volume = {19},
  number = {7},
  pages = {1506--1518},
  month = {7},
  url = {https://ieeexplore.ieee.org/document/8697126},
  }

• A. Reinhardt and C. Klemenjak, “How does Load Disaggregation Performance Depend on Data Characteristics? Insights from a Benchmarking Study,” in In Proceedings of the Eleventh ACM International Conference on Future Energy Systems (e-Energy ’20), 2020, p. 167–177. doi:10.1145/3396851.3397691
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c472e93d250172eabef2640068,
  author = {Reinhardt, Andreas and Klemenjak, Christoph},
  title = {{How does Load Disaggregation Performance Depend on Data Characteristics? Insights from a Benchmarking Study}},
  booktitle = { In Proceedings of the Eleventh ACM International Conference on Future Energy Systems (e-Energy ’20)},
  year = {2020},
  doi = {10.1145/3396851.3397691},
  pages = {167--177},
  month = {6},
  publisher = {ACM New York},
  url = {https://www.areinhardt.de/publications/2020/Reinhardt\_eEnergy\_2020.pdf},
  }

• R. Muzaffar, C. Raffelsberger, D. Emini, A. Fakhreddine, J. Lopez Luque, and C. Bettstetter, “First Experiments with a 5G-Connected Drone,” in DroNet’20 Proceedings of the 6th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications, New York, NY, 2020. doi:10.1145/3396864.3400304
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c572e4172e0172e627ea7c0057,
  author = {Muzaffar, Raheeb and Raffelsberger, Christian and Emini, Driton and Fakhreddine, Aymen and Lopez Luque, Jose and Bettstetter, Christian},
  title = {{First Experiments with a 5G-Connected Drone}},
  booktitle = {DroNet'20 Proceedings of the 6th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications },
  year = {2020},
  doi = {10.1145/3396864.3400304},
  address = {New York, NY},
  month = {6},
  publisher = {ACM - New York},
  url = {https://dl.acm.org/doi/10.1145/3396864.3400304},
  }

• D. Mendez-Romero, M. J. Fernandez-Getino Garcia, A. M. Tonello, and O. Dobre, “Neural-Network-Switched Kalman Filters as Novel Trackers for Multipath Channels,” in IEEE ICC 2020 – Workshop Machine Learning on Communications, Piscataway (NJ), 2020. doi:10.1109/ICCWorkshops49005.2020.9145198
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c671a4cc550171a7e954ec00c5,
  author = {Mendez-Romero, Diego and Fernandez-Getino Garcia, Maria Julia and Tonello, Andrea M. and Dobre, Octavia},
  title = {{Neural-Network-Switched Kalman Filters as Novel Trackers for Multipath Channels}},
  booktitle = {IEEE ICC 2020 – Workshop Machine Learning on Communications},
  year = {2020},
  doi = {10.1109/ICCWorkshops49005.2020.9145198},
  address = {Piscataway (NJ)},
  month = {6},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9145198},
  }

• H. Bousbiat, C. Klemenjak, G. Leitner, and W. Elmenreich, “Augmenting an Assisted Living Lab with Non-Intrusive Load Monitoring,” in IEEE International Instrumentation and Measurement Technology Conference 2019 (I2MTC), Piscataway (NJ), 2020, p. 1–5.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c5724ebe870172519ac0e0006b,
  author = {Bousbiat, Hafsa and Klemenjak, Christoph and Leitner, Gerhard and Elmenreich, Wilfried},
  title = {{Augmenting an Assisted Living Lab with Non-Intrusive Load Monitoring}},
  booktitle = {IEEE International Instrumentation and Measurement Technology Conference 2019 (I2MTC)},
  year = {2020},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://arxiv.org/pdf/2002.05593},
  }

• C. Schmidt, M. Crussiere, J. Helard, and A. M. Tonello, “Improving Energy Efficiency in Massive MIMO: Joint Digital Beam-steering andTR-PAPR Reduction ,” IET Communications, 2020. doi:10.1049/iet-com.2019.1129
  [BibTeX] [Abstract] [Download PDF]
  

  In this study, the authors propose a novel architecture based on the combination of peak-to-average power ratio (PAPR) reduction with digital beamforming (BF) for mm-wave massive multiple-input multiple-output (MIMO) systems. In order to keep the power amplifiers (PAs) working at the same input back-off thus maximising the system power efficiency, they propose to perform time-domain transmit beam-steering by adding progressive time delays to the signals at each antenna element, while keeping the amplitude weights unitary. They show that these time delays can be obtained with a finite impulse response filter implementation of time-domain fractional delay filter structures such as Lagrange interpolation polynomials. They also introduce an analysis on the PAPR of the interpolated signals, where they derive an upper bound to it and show that its value is similar to that of the signal at the input of the interpolation filters, showing the feasibility of the proposed method. In addition, they present a detailed analysis where they show that a significant reduction in computational complexity is obtained when compared to frequency-domain BF. Simulation results validate that the novel proposed scheme combining PAPR reduction and digital BF offers high-precision beam-steering maintaining reduced PAPR in the delayed signals fed to the antennas.

  @article{0f4de0c4727d176e01727eff5b490033,
  author = {Schmidt, Christian and Crussiere, Matthieu and Helard, Jean-Francois and Tonello, Andrea M.},
  title = {{Improving Energy Efficiency in Massive MIMO: Joint Digital Beam-steering andTR-PAPR Reduction }},
  journal = {IET Communications},
  year = {2020},
  abstract = {In this study, the authors propose a novel architecture based on the combination of peak-to-average power ratio (PAPR) reduction with digital beamforming (BF) for mm-wave massive multiple-input multiple-output (MIMO) systems. In order to keep the power amplifiers (PAs) working at the same input back-off thus maximising the system power efficiency, they propose to perform time-domain transmit beam-steering by adding progressive time delays to the signals at each antenna element, while keeping the amplitude weights unitary. They show that these time delays can be obtained with a finite impulse response filter implementation of time-domain fractional delay filter structures such as Lagrange interpolation polynomials. They also introduce an analysis on the PAPR of the interpolated signals, where they derive an upper bound to it and show that its value is similar to that of the signal at the input of the interpolation filters, showing the feasibility of the proposed method. In addition, they present a detailed analysis where they show that a significant reduction in computational complexity is obtained when compared to frequency-domain BF. Simulation results validate that the novel proposed scheme combining PAPR reduction and digital BF offers high-precision beam-steering maintaining reduced PAPR in the delayed signals fed to the antennas.},
  doi = {10.1049/iet-com.2019.1129},
  month = {5},
  url = {https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.1129},
  }

• F. Marcuzzi, A. M. Tonello, and N. A. Letizia, “Discovering Routing Anomalies in Large PLC Metering Deployments from Field Data,” in IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020), Piscataway (NJ), 2020, p. 1–6. doi:10.1109/ISPLC48789.2020.9115397
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f12f232008d,
  author = {Marcuzzi, Francesco and Tonello, Andrea M. and Letizia, Nunzio Alexandro},
  title = {{Discovering Routing Anomalies in Large PLC Metering Deployments from Field Data}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020)},
  year = {2020},
  doi = {10.1109/ISPLC48789.2020.9115397},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9115397},
  }

• A. M. Tonello and M. De Piante, “Exploring joint impedance and voltage modulation for wired networks,” in IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020), Piscataway (NJ), 2020, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f1a89ce00df,
  author = {Tonello, Andrea M. and De Piante, Marco},
  title = {{Exploring joint impedance and voltage modulation for wired networks}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020)},
  year = {2020},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9115409},
  }

• N. A. Letizia, A. M. Tonello, and D. Righini, “Learning to Synthesize Noise: The Multiple Conductor Power Line Case,” in IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020), Piscataway (NJ), 2020, p. 1–6. doi:10.1109/ISPLC48789.2020.9115394
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f1876e400cb,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M. and Righini, Davide},
  title = {{Learning to Synthesize Noise: The Multiple Conductor Power Line Case}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020)},
  year = {2020},
  doi = {10.1109/ISPLC48789.2020.9115394},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9115394},
  }

• D. Righini and A. M. Tonello, “Non Intrusive Network Impedance Estimation with State of the Art PLC Modems,” in IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020), Piscataway (NJ), 2020, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f14a7f500a2,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{Non Intrusive Network Impedance Estimation with State of the Art PLC Modems}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020)},
  year = {2020},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9115400},
  }

• N. A. Letizia and A. M. Tonello, “Supervised Fault Detection in Energy Grids Measuring Electrical Quantities in the PLC Band,” in IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020), Piscataway (NJ), 2020, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f16cf9000b6,
  author = {Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Supervised Fault Detection in Energy Grids Measuring Electrical Quantities in the PLC Band}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2020 (ISPLC 2020)},
  year = {2020},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9115408},
  }

• A. Ebrahimi Jarihani, S. Sarafi, M. Köberle, J. Sturm, and A. M. Tonello, “A 16 Gbps, Full-Duplex Transceiver over Lossy On-Chip Interconnects in 28 nm CMOS Technology,” Electronics, p. 1–13, 2020. doi:10.3390/electronics9050717
  [BibTeX] [Abstract] [Download PDF]
  

  A high-speed full-duplex transceiver (FDT) over lossy on-chip interconnects is presented. The FDT employs a hybrid circuit to separate the inbound and outbound signals from each other and also performs echo-cancellation with the help of the main and the auxiliary drivers. A hybrid MOS device is utilized for impedance matching and conversion of the received voltage signal into a current signal for amplification. Moreover, a compensation capacitance (Cc) is used at the output of the main driver to minimize the residual echo signal and achieve a higher data rate. The entire FDT architecture has been designed in TSMC 28 nm CMOS standard process with 0.9 V supply voltage. The performance results validate a 16 Gbps FD operation with a root-mean-square (RMS) jitter of 16.4 ps, and a power efficiency of 0.16 pJ/b/mm over a 5 mm on-chip interconnect without significant effect due to process-voltage-temperature (PVT) variations. To the best knowledge of the authors, this work shows the highest achievable full-duplex data rate, among the solutions reported in the literature to date, yet with low complexity, low layout area of 1581 µm2 and competitive power efficiency.

  @article{0f4de0c771e299230171e4edd02d0022,
  author = {Ebrahimi Jarihani, Arash and Sarafi, Sahar and Köberle, Michael and Sturm, Johannes and Tonello, Andrea M.},
  title = {{A 16 Gbps, Full-Duplex Transceiver over Lossy On-Chip Interconnects in 28 nm CMOS Technology}},
  journal = {Electronics},
  year = {2020},
  abstract = {A high-speed full-duplex transceiver (FDT) over lossy on-chip interconnects is presented. The FDT employs a hybrid circuit to separate the inbound and outbound signals from each other and also performs echo-cancellation with the help of the main and the auxiliary drivers. A hybrid MOS device is utilized for impedance matching and conversion of the received voltage signal into a current signal for amplification. Moreover, a compensation capacitance (Cc) is used at the output of the main driver to minimize the residual echo signal and achieve a higher data rate. The entire FDT architecture has been designed in TSMC 28 nm CMOS standard process with 0.9 V supply voltage. The performance results validate a 16 Gbps FD operation with a root-mean-square (RMS) jitter of 16.4 ps, and a power efficiency of 0.16 pJ/b/mm over a 5 mm on-chip interconnect without significant effect due to process-voltage-temperature (PVT) variations. To the best knowledge of the authors, this work shows the highest achievable full-duplex data rate, among the solutions reported in the literature to date, yet with low complexity, low layout area of 1581 µm2 and competitive power efficiency.},
  doi = {10.3390/electronics9050717},
  pages = {1--13},
  month = {4},
  url = {https://www.mdpi.com/2079-9292/9/5/717},
  }

• C. Klemenjak, C. Kovatsch, M. Herold, and W. Elmenreich, “A synthetic energy dataset for non-intrusive load monitoring in households,” Scientific Data, p. 1–17, 2020. doi:10.1038/s41597-020-0434-6
  [BibTeX] [Abstract] [Download PDF]
  

  Research on smart grid technologies is expected to result in effective climate change mitigation. Non-Intrusive Load Monitoring (NILM) is seen as a key technique for enabling innovative smart-grid services. By breaking down the energy consumption of households and industrial facilities into its components, NILM techniques provide information on present appliances and can be applied to perform diagnostics. As with related Machine Learning problems, research and development requires a sufficient amount of data to train and validate new approaches. As a viable alternative to collecting datasets in buildings during expensive and time-consuming measurement campaigns, the idea of generating synthetic datasets for NILM gain momentum recently. With SynD, we present a synthetic energy dataset with focus on residential buildings. We release 180 days of synthetic power data on aggregate level (i.e. mains) and individual appliances. SynD is the result of a custom simulation process that relies on power traces of real household appliances. In addition, we present several case studies that demonstrate similarity of our dataset and four real-world energy datasets.

  @article{0f4de0c67185e671017187bad6850050,
  author = {Klemenjak, Christoph and Kovatsch, Christoph and Herold, Manuel and Elmenreich, Wilfried},
  title = {{A synthetic energy dataset for non-intrusive load monitoring in households}},
  journal = {Scientific Data},
  year = {2020},
  abstract = {Research on smart grid technologies is expected to result in effective climate change mitigation. Non-Intrusive Load Monitoring (NILM) is seen as a key technique for enabling innovative smart-grid services. By breaking down the energy consumption of households and industrial facilities into its components, NILM techniques provide information on present appliances and can be applied to perform diagnostics. As with related Machine Learning problems, research and development requires a sufficient amount of data to train and validate new approaches. As a viable alternative to collecting datasets in buildings during expensive and time-consuming measurement campaigns, the idea of generating synthetic datasets for NILM gain momentum recently. With SynD, we present a synthetic energy dataset with focus on residential buildings. We release 180 days of synthetic power data on aggregate level (i.e. mains) and individual appliances. SynD is the result of a custom simulation process that relies on power traces of real household appliances. In addition, we present several case studies that demonstrate similarity of our dataset and four real-world energy datasets.},
  doi = {10.1038/s41597-020-0434-6},
  pages = {1--17},
  month = {4},
  url = {https://www.nature.com/articles/s41597-020-0434-6},
  }

• F. Passerini and A. M. Tonello, “Secure PHY Layer Key Generation in the Asymmetric Power Line Communication Channel,” Electronics, p. 1–21, 2020. doi:10.3390/electronics9040605
  [BibTeX] [Abstract] [Download PDF]
  

  Leakage of information in power line communication (PLC) networks is a threat to privacy and security. A way to enhance security is to encode the transmitted information with the use of a secret key. If the communication channel exhibits common characteristics at both ends and these are unknown to a potential eavesdropper, then it is possible to locally generate a common secret key at the two communication ends without the need for sharing it through the broadcast channel. This is known as physical layer key generation. To this aim, known techniques have been developed exploiting the transfer function of symmetric channels. However, the PLC channel is in general not symmetric, but just reciprocal. Therefore, in this paper, we first analyze the characteristics of the channel to verify whether physical layer key generation can be implemented. Then, we propose two novel methods that exploit the reciprocity of the PLC channel to generate common information by the two intended users. This information is processed through different quantization techniques to generate secret keys locally. To assess the security of the generated keys, we analyze the spatial correlation of PLC channels. This allows verifying whether the eavesdropper’s channels are weakly correlated with the intended users’ channel. Consequently, it is found that the information leaked to a possible eavesdropper has very low correlation to the locally generated key. The analysis and proposed methods are validated on a measurement dataset.

  @article{0f4de0c671a4cc550171a7ee99e80107,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Secure PHY Layer Key Generation in the Asymmetric Power Line Communication Channel}},
  journal = {Electronics},
  year = {2020},
  abstract = {Leakage of information in power line communication (PLC) networks is a threat to privacy and security. A way to enhance security is to encode the transmitted information with the use of a secret key. If the communication channel exhibits common characteristics at both ends and these are unknown to a potential eavesdropper, then it is possible to locally generate a common secret key at the two communication ends without the need for sharing it through the broadcast channel. This is known as physical layer key generation. To this aim, known techniques have been developed exploiting the transfer function of symmetric channels. However, the PLC channel is in general not symmetric, but just reciprocal. Therefore, in this paper, we first analyze the characteristics of the channel to verify whether physical layer key generation can be implemented. Then, we propose two novel methods that exploit the reciprocity of the PLC channel to generate common information by the two intended users. This information is processed through different quantization techniques to generate secret keys locally. To assess the security of the generated keys, we analyze the spatial correlation of PLC channels. This allows verifying whether the eavesdropper’s channels are weakly correlated with the intended users’ channel. Consequently, it is found that the information leaked to a possible eavesdropper has very low correlation to the locally generated key. The analysis and proposed methods are validated on a measurement dataset.},
  doi = {10.3390/electronics9040605},
  pages = {1--21},
  month = {4},
  url = {https://www.mdpi.com/2079-9292/9/4/605},
  }

• M. M. Schranz, M. Umlauft, M. Sende, and W. Elmenreich, “Swarm Robotic Behaviors and Current Applications,” Frontiers in Robotics and AI, vol. 7, iss. 36, p. 1–20, 2020. doi:10.3389/frobt.2020.00036
  [BibTeX] [Abstract] [Download PDF]
  

  In swarm robotics multiple robots collectively solve problems by forming advantageous structures and behaviors similar to the ones observed in natural systems, such as swarms of bees, birds, or fish. However, the step to industrial applications has not yet been made successfully. Literature is light on real-world swarm applications that apply actual swarm algorithms. Typically, only parts of swarm algorithms are used which we refer to as basic swarm behaviors. In this paper we collect and categorize these behaviors into spatial organization, navigation, decision making, and miscellaneous. This taxonomy is then applied to categorize a number of existing swarm robotic applications from research and industrial domains. Along with the classification, we give a comprehensive overview of research platforms that can be used for testing and evaluating swarm behavior, systems that are already on the market, and projects that target a specific market. Results from this survey show that swarm robotic applications are still rare today. Many industrial projects still rely on centralized control, and even though a solution with multiple robots is employed, the principal idea of swarm robotics of distributed decision making is neglected. We identified mainly following reasons: First of all, swarm behavior emerging from local interactions is hard to predict and a proof of its eligibility for applications in an industrial context is difficult to provide. Second, current communication architectures often do not match requirements for swarm communication, which often leads to a system with a centralized communication infrastructure. Finally, testing swarms for real industrial applications is an issue, since deployment in a productive environment is typically too risky and simulations of a target system may not be sufficiently accurate. In contrast, the research platforms present a means for transforming swarm robotics solutions from theory to prototype industrial systems.

  @article{0f4de0c4722fd8390172310383980001,
  author = {Schranz, Melanie Marianne and Umlauft, Martina and Sende, Micha and Elmenreich, Wilfried},
  title = {{Swarm Robotic Behaviors and Current Applications}},
  journal = {Frontiers in Robotics and AI},
  year = {2020},
  abstract = {In swarm robotics multiple robots collectively solve problems by forming advantageous structures and behaviors similar to the ones observed in natural systems, such as swarms of bees, birds, or fish. However, the step to industrial applications has not yet been made successfully. Literature is light on real-world swarm applications that apply actual swarm algorithms. Typically, only parts of swarm algorithms are used which we refer to as basic swarm behaviors. In this paper we collect and categorize these behaviors into spatial organization, navigation, decision making, and miscellaneous. This taxonomy is then applied to categorize a number of existing swarm robotic applications from research and industrial domains. Along with the classification, we give a comprehensive overview of research platforms that can be used for testing and evaluating swarm behavior, systems that are already on the market, and projects that target a specific market. Results from this survey show that swarm robotic applications are still rare today. Many industrial projects still rely on centralized control, and even though a solution with multiple robots is employed, the principal idea of swarm robotics of distributed decision making is neglected. We identified mainly following reasons: First of all, swarm behavior emerging from local interactions is hard to predict and a proof of its eligibility for applications in an industrial context is difficult to provide. Second, current communication architectures often do not match requirements for swarm communication, which often leads to a system with a centralized communication infrastructure. Finally, testing swarms for real industrial applications is an issue, since deployment in a productive environment is typically too risky and simulations of a target system may not be sufficiently accurate. In contrast, the research platforms present a means for transforming swarm robotics solutions from theory to prototype industrial systems.},
  doi = {10.3389/frobt.2020.00036},
  volume = {7},
  number = {36},
  pages = {1--20},
  month = {4},
  url = {https://www.frontiersin.org/articles/10.3389/frobt.2020.00036/pdf},
  }

• B. Salamat and A. M. Tonello, “Energy Based Control of a Swash Mass Helicopter through Decoupling Change of Coordinates,” IEEE Access, vol. 8, p. 1–11, 2020. doi:10.1109/ACCESS.2020.2990113
  [BibTeX] [Abstract] [Download PDF]
  

  We consider a small helicopter structure that is maneuvered through the control of moving masses. It is referred to as a swash mass helicopter (SMH). This paper addresses the trajectory tracking control problem for the SMH, with a specific focus on the decoupling change of coordinates of both rotationalandtranslationaldynamics.Weproposeacontrolschemeinwhichpositiontrackingistheprimary objective, while the attitude tracking task is considered as a secondary objective. The intermediate control signals related to the attitude dynamics exploit the structural properties of the SMH and are enhanced with terms that grant a more accurate tracking of the target trajectory. The closed-loop system stability under the trajectory tracking objective is obtained following the Interconnection and Damping Assignment PassivityBased Control (IDA-PBC) approach. In addition, the presence of external disturbances can diminish the trajectory tracking performance. For this reason, a nonlinear outer loop controller is added to the IDAPBC to compensate the disturbances. Finally, the results of several simulations are reported to evaluate the performance of the control strategy.

  @article{0f4de0c771e7bf7a0171e89a071d000b,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Energy Based Control of a Swash Mass Helicopter through Decoupling Change of Coordinates}},
  journal = {IEEE Access},
  year = {2020},
  abstract = {We consider a small helicopter structure that is maneuvered through the control of moving masses. It is referred to as a swash mass helicopter (SMH). This paper addresses the trajectory tracking control problem for the SMH, with a specific focus on the decoupling change of coordinates of both rotationalandtranslationaldynamics.Weproposeacontrolschemeinwhichpositiontrackingistheprimary objective, while the attitude tracking task is considered as a secondary objective. The intermediate control signals related to the attitude dynamics exploit the structural properties of the SMH and are enhanced with terms that grant a more accurate tracking of the target trajectory. The closed-loop system stability under the trajectory tracking objective is obtained following the Interconnection and Damping Assignment PassivityBased Control (IDA-PBC) approach. In addition, the presence of external disturbances can diminish the trajectory tracking performance. For this reason, a nonlinear outer loop controller is added to the IDAPBC to compensate the disturbances. Finally, the results of several simulations are reported to evaluate the performance of the control strategy.},
  doi = {10.1109/ACCESS.2020.2990113},
  volume = {8},
  pages = {1--11},
  month = {4},
  url = {https://ieeexplore.ieee.org/document/9076666},
  }

• S. Moaveninejad, A. Kumar, M. Elgenedy, A. M. Tonello, N. Al-Dhahir, and M. Magarini, “Simpler than FRESH Filter: A Parametrric Approach for Cyclostationary Noise Generation in NB-PLC,” IEEE Communications Letters, p. 1–5, 2020. doi:10.1109/LCOMM.2020.2985130
  [BibTeX] [Abstract] [Download PDF]
  

  A key challenge in narrowband power line communications (NB-PLC) is the mitigation of impairments introduced by the correlated cyclostationary noise. The frequency-shift (FRESH) filtering approach has been recently proposed to reproduce a cyclostationary NB-PLC noise with characteristics similar to those obtained from field measurements. In this paper, we use a classification of the noise generated by the FRESH filter into three classes to propose a simple method to produce noise samples with statistics similar to those obtained at its output. The approach consists of parametrized spectral and temporal shapings applied to a white Gaussian noise sequence. We validate our proposed method by comparing its generated noise samples with those obtained using the FRESH filter and using measurements in terms of: i) normalized mean-squared error between the cyclic auto-correlations; ii) bit error rate.

  @article{0f4de0c671a4cc550171a7f14fc7011d,
  author = {Moaveninejad, Sadaf and Kumar, Atul and Elgenedy, Mahmoud and Tonello, Andrea M. and Al-Dhahir, Naofal and Magarini, Maurizio},
  title = {{Simpler than FRESH Filter: A Parametrric Approach for Cyclostationary Noise Generation in NB-PLC}},
  journal = {IEEE Communications Letters},
  year = {2020},
  abstract = {A key challenge in narrowband power line communications (NB-PLC) is the mitigation of impairments introduced by the correlated cyclostationary noise. The frequency-shift (FRESH) filtering approach has been recently proposed to reproduce a cyclostationary NB-PLC noise with characteristics similar to those obtained from field measurements. In this paper, we use a classification of the noise generated by the FRESH filter into three classes to propose a simple method to produce noise samples with statistics similar to those obtained at its output. The approach consists of parametrized spectral and temporal shapings applied to a white Gaussian noise sequence. We validate our proposed method by comparing its generated noise samples with those obtained using the FRESH filter and using measurements in terms of: i) normalized mean-squared error between the cyclic auto-correlations; ii) bit error rate.},
  doi = {10.1109/LCOMM.2020.2985130},
  pages = {1--5},
  month = {4},
  url = {https://ieeexplore.ieee.org/document/9055119/keywords\#keywords},
  }

• N. A. Letizia, B. Salamat, and A. M. Tonello, “A New Recursive Framework for Trajectory Generation of UAVs,” in IEEE Aerospace Conference 2020, Piscataway (NJ), 2020. doi:10.1109/AERO47225.2020.9172656
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f0c73390071,
  author = {Letizia, Nunzio Alexandro and Salamat, Babak and Tonello, Andrea M.},
  title = {{A New Recursive Framework for Trajectory Generation of UAVs}},
  booktitle = {IEEE Aerospace Conference 2020},
  year = {2020},
  doi = {10.1109/AERO47225.2020.9172656},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9172656},
  }

• B. Salamat and A. M. Tonello, “Robust Energy Based Control of a Swash Mass Helicopter Subjected to Matched Disturbances,” in IEEE Aerospace Conference 2020, Piscataway (NJ), 2020. doi:10.1109/AERO47225.2020.9172315
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4727d176e01727f0aebc9005d,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Robust Energy Based Control of a Swash Mass Helicopter Subjected to Matched Disturbances}},
  booktitle = {IEEE Aerospace Conference 2020},
  year = {2020},
  doi = {10.1109/AERO47225.2020.9172315},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9172315},
  }

• J. F. Schmidt, D. A. Chernov, and C. Bettstetter, “Towards Industrial Ultra-Wideband Networks: Experiments for Machine Vibration Monitoring,” IEEE Access, vol. 8, p. 42576–42583, 2020. doi:10.1109/ACCESS.2020.2976846
  [BibTeX] [Abstract] [Download PDF]
  

  We discuss the potential of ultra-wideband (UWB) technology for realizing use cases in industry 4.0 and demonstrate the implementation of an UWB sensor network with off-the-shelf transceivers for machine vibration monitoring. We propose a flexible medium access layer tailored for industrial sensing and show how the choice of its parameters is affected by the propagation environment and hardware constraints. Our real-world experiments reveal that links up to 20 meters can be achieved in industrial environments with an average packet loss rate in the order of 10-6 for typical links. A comparison with a commercial vibration monitoring system based on IEEE 802.15.4 spread spectrum shows that UWB attains a twenty-times higher throughput for similar link ranges.

  @article{0f4de0c5719a802801719c0be6560042,
  author = {Schmidt, Jorge Friedrich and Chernov, Denis Alekseevich and Bettstetter, Christian},
  title = {{Towards Industrial Ultra-Wideband Networks: Experiments for Machine Vibration Monitoring}},
  journal = {IEEE Access},
  year = {2020},
  abstract = {We discuss the potential of ultra-wideband (UWB) technology for realizing use cases in industry 4.0 and demonstrate the implementation of an UWB sensor network with off-the-shelf transceivers for machine vibration monitoring. We propose a flexible medium access layer tailored for industrial sensing and show how the choice of its parameters is affected by the propagation environment and hardware constraints. Our real-world experiments reveal that links up to 20 meters can be achieved in industrial environments with an average packet loss rate in the order of 10-6 for typical links. A comparison with a commercial vibration monitoring system based on IEEE 802.15.4 spread spectrum shows that UWB attains a twenty-times higher throughput for similar link ranges.},
  doi = {10.1109/ACCESS.2020.2976846},
  volume = {8},
  pages = {42576--42583},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/9015958},
  }

• P. Mazdin, M. Barcis, H. Hellwagner, and B. Rinner, “Distributed Task Assignment in Multi-Robot Systems based on Information Utility,” in Proceedings of the IEEE 16th International Conference on Automation Science and Engineering (CASE), 2020, p. 734–740. doi:10.1109/CASE48305.2020.9216982
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c77543c5ba017544f726a50037,
  author = {Mazdin, Petra and Barcis, Michal and Hellwagner, Hermann and Rinner, Bernhard},
  title = {{Distributed Task Assignment in Multi-Robot Systems based on Information Utility}},
  booktitle = {Proceedings of the IEEE 16th International Conference on Automation Science and Engineering (CASE) },
  year = {2020},
  doi = {10.1109/CASE48305.2020.9216982},
  pages = {734--740},
  publisher = {IEEE},
  url = {https://doi.org/10.1109/CASE48305.2020.9216982},
  }

• N. Bisagno, A. Xamin, F. De Natale, N. Conci, and B. Rinner, “Dynamic Camera Reconfiguration with Reinforcement Learning and Stochastic Methods for Crowd Surveillance,” Sensors, vol. 20, iss. 17, p. 1–15, 2020. doi:10.3390/s20174691
  [BibTeX] [Download PDF]

  @article{0f4de0c7741e3ada01741f7fe1fc0023,
  author = {Bisagno, Niccoló and Xamin, Alberto and De Natale, Francesco and Conci, Nicola and Rinner, Bernhard},
  title = {{Dynamic Camera Reconfiguration with Reinforcement Learning and Stochastic Methods for Crowd Surveillance}},
  journal = {Sensors},
  year = {2020},
  doi = {10.3390/s20174691},
  volume = {20},
  number = {17},
  pages = {1--15},
  url = {https://www.mdpi.com/1424-8220/20/17/4691},
  }

• R. Muzaffar, E. Yanmaz, C. Raffelsberger, C. Bettstetter, and A. Cavallaro, “Live multicast video streaming from drones: an experimental study,” Autonomous Robots, vol. 44, iss. 1, p. 75–91, 2020. doi:10.1007/s10514-019-09851-6
  [BibTeX] [Abstract] [Download PDF]
  

  We present and evaluate a multicast framework for point-to-multipoint and multipoint-to-point-to-multipoint video streaming that is applicable if both source and receiver nodes are mobile. Receiver nodes can join a multicast group by selecting a particular video stream and are dynamically elected as designated nodes based on their signal quality to provide feedback about packet reception. We evaluate the proposed application-layer rate-adaptive multicast video streaming over an aerial ad-hoc network that uses IEEE 802.11, a desirable protocol that, however, does not support a reliable multicast mechanism due to its inability to provide feedback from the receivers. Our rate-adaptive approach outperforms legacy multicast in terms of goodput, delay, and packet loss. Moreover, we obtain a gain in video quality (PSNR) of 30\% for point-to-multipoint and of 20\% for multipoint-to-point-to-multipoint streaming.

  @article{0f4de0c66feab5ff016feb772e5900c5,
  author = {Muzaffar, Raheeb and Yanmaz, Evsen and Raffelsberger, Christian and Bettstetter, Christian and Cavallaro, Andrea},
  title = {{Live multicast video streaming from drones: an experimental study}},
  journal = {Autonomous Robots},
  year = {2020},
  abstract = {We present and evaluate a multicast framework for point-to-multipoint and multipoint-to-point-to-multipoint video streaming that is applicable if both source and receiver nodes are mobile. Receiver nodes can join a multicast group by selecting a particular video stream and are dynamically elected as designated nodes based on their signal quality to provide feedback about packet reception. We evaluate the proposed application-layer rate-adaptive multicast video streaming over an aerial ad-hoc network that uses IEEE 802.11, a desirable protocol that, however, does not support a reliable multicast mechanism due to its inability to provide feedback from the receivers. Our rate-adaptive approach outperforms legacy multicast in terms of goodput, delay, and packet loss. Moreover, we obtain a gain in video quality (PSNR) of 30\% for point-to-multipoint and of 20\% for multipoint-to-point-to-multipoint streaming.},
  doi = {10.1007/s10514-019-09851-6},
  volume = {44},
  number = {1},
  pages = {75--91},
  month = {1},
  url = {https://link.springer.com/article/10.1007\%2Fs10514-019-09851-6},
  }

• J. Scherer and B. Rinner, “Multi-Robot Patrolling with Sensing Idleness and Data Delay Objectives,” Journal of Intelligent & Robotic Systems, p. 1–19, 2020. doi:10.1007/s10846-020-01156-6
  [BibTeX] [Download PDF]

  @article{0f4de0c772017f11017202a1d99f001c,
  author = {Scherer, Jürgen and Rinner, Bernhard},
  title = {{Multi-Robot Patrolling with Sensing Idleness and Data Delay Objectives}},
  journal = {Journal of Intelligent \& Robotic Systems},
  year = {2020},
  doi = {10.1007/s10846-020-01156-6},
  pages = {1--19},
  url = {https://doi.org/10.1007/s10846-020-01156-6},
  }

• J. Scherer and B. Rinner, “Multi-Robot Persistent Surveillance With Connectivity Constraints,” IEEE Access, vol. 8, p. 15093–15109, 2020. doi:10.1109/ACCESS.2020.2967650
  [BibTeX] [Download PDF]

  @article{0f4de0c772017f1101720292b4f80004,
  author = {Scherer, Jürgen and Rinner, Bernhard},
  title = {{Multi-Robot Persistent Surveillance With Connectivity Constraints}},
  journal = {IEEE Access},
  year = {2020},
  doi = {10.1109/ACCESS.2020.2967650},
  volume = {8},
  pages = {15093--15109},
  url = {https://ieeexplore.ieee.org/document/8962007},
  }

• C. Regazzoni, L. Marcenaro, D. Campo, and B. Rinner, “Multisensorial Generative and Descriptive Self-Awareness Models for Autonomous Systems,” Proceedings of the IEEE, vol. 108, iss. 7, p. 987–1010, 2020. doi:10.1109/JPROC.2020.2986602
  [BibTeX]

  @article{0f4de0c572d4a3d20172d5e43b560000,
  author = {Regazzoni, Carlo and Marcenaro, Lucio and Campo, Damian and Rinner, Bernhard},
  title = {{Multisensorial Generative and Descriptive Self-Awareness Models for Autonomous Systems}},
  journal = {Proceedings of the IEEE},
  year = {2020},
  doi = {10.1109/JPROC.2020.2986602},
  volume = {108},
  number = {7},
  pages = {987--1010},
  }

• J. Scherer and B. Rinner, “Multi-UAV Surveillance With Minimum Information Idleness and Latency Constraints,” IEEE Robotics and Automation Letters, vol. 5, iss. 3, p. 4812–4819, 2020. doi:10.1109/LRA.2020.3003884
  [BibTeX] [Download PDF]

  @article{0f4de0c67308233e0173090cf7060000,
  author = {Scherer, Jürgen and Rinner, Bernhard},
  title = {{Multi-UAV Surveillance With Minimum Information Idleness and Latency Constraints}},
  journal = {IEEE Robotics and Automation Letters},
  year = {2020},
  doi = {10.1109/LRA.2020.3003884},
  volume = {5},
  number = {3},
  pages = {4812--4819},
  url = {https://ieeexplore.ieee.org/document/9121685},
  }

• F. Passerini and A. M. Tonello, “Power Line Communications for Grid Discovery and Diagnostics,” in Encyclopedia of Wireless Networks, Berlin und London: Springer Nature, 2020. doi:10.1007/978-3-319-32903-1_244-1
  [BibTeX] [Abstract] [Download PDF]
  

  Grid discovery and diagnostics refers to characterizing both the electrical and topological properties of the grid, and to monitor their evolution over time. It can beperformed using two technical approaches. The first approach employs a series ofelectrical meters that are directly branched to the network and specifically designedto sense different electrical quantities. The gathered information is then shared between the nodes or directly with a central unit using a separate communication device. The second approach exploits power line communications (PLC) both as sensing and communication technology. PLC transmitters generate signals according totheir specific communication standard, while the receivers, apart from the classicalcommunication function, exploit those signals to perform grid discovery and diagnostics. The sensing signals have a frequency range from few Hz to few kHz in thefirst approach, while in the second, as per PLC standards, the frequency range goesfrom few kHz to several MHz.

  @incollection{0f4de0c576a752ff0176a9e754c30064,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Power Line Communications for Grid Discovery and Diagnostics}},
  booktitle = {Encyclopedia of Wireless Networks},
  publisher = {Springer Nature},
  year = {2020},
  abstract = {Grid discovery and diagnostics refers to characterizing both the electrical and topological properties of the grid, and to monitor their evolution over time. It can beperformed using two technical approaches. The first approach employs a series ofelectrical meters that are directly branched to the network and specifically designedto sense different electrical quantities. The gathered information is then shared between the nodes or directly with a central unit using a separate communication device. The second approach exploits power line communications (PLC) both as sensing and communication technology. PLC transmitters generate signals according totheir specific communication standard, while the receivers, apart from the classicalcommunication function, exploit those signals to perform grid discovery and diagnostics. The sensing signals have a frequency range from few Hz to few kHz in thefirst approach, while in the second, as per PLC standards, the frequency range goesfrom few kHz to several MHz.},
  doi = {10.1007/978-3-319-32903-1\_244-1},
  address = {Berlin und London},
  isbn = {978-3-319-78261-4},
  url = {https://link.springer.com/referenceworkentry/10.1007\%2F978-3-319-32903-1\_244-1},
  }

• N. Dutt, C. Regazzoni, B. Rinner, and X. Yao, “Self-Awareness for Autonomous Systems,” Proceedings of the IEEE, vol. 108, iss. 7, p. 971–975, 2020. doi:10.1109/JPROC.2020.2990784
  [BibTeX]

  @article{0f4de0c572d4a3d20172d5ef16be0023,
  author = {Dutt, Nikil and Regazzoni, Carlo and Rinner, Bernhard and Yao, Xin},
  title = {{Self-Awareness for Autonomous Systems}},
  journal = {Proceedings of the IEEE},
  year = {2020},
  doi = {10.1109/JPROC.2020.2990784},
  volume = {108},
  number = {7},
  pages = {971--975},
  }

• C. Klemenjak, S. Makonin, and W. Elmenreich, “Towards Comparability in Non-Intrusive Load Monitoring: On Data and Performance Evaluation ,” in 2020 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), Piscataway (NJ), 2020, p. 1–5. doi:10.1109/ISGT45199.2020.9087706
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c46fc1e3b3016fc2f5016502d6,
  author = {Klemenjak, Christoph and Makonin, Stephen and Elmenreich, Wilfried},
  title = {{Towards Comparability in Non-Intrusive Load Monitoring: On Data and Performance Evaluation }},
  booktitle = {2020 IEEE Power \& Energy Society Innovative Smart Grid Technologies Conference (ISGT)},
  year = {2020},
  doi = {10.1109/ISGT45199.2020.9087706},
  pages = {1--5},
  address = {Piscataway (NJ)},
  publisher = {IEEE},
  url = {https://arxiv.org/pdf/2001.07708.pdf},
  }

2019

• A. Fuchs, C. Pichler-Koban, W. Elmenreich, and M. Jungmeier, “Game of Clones: Students Model the Dispersal and Fighting of Japanese Knotweed (Fallopia japonica),” in Diversity and Ecology of Invasive Plants, S. C. Sahu and S. Kumar, Eds., London: IntechOpen, 2019, p. 243–263. doi:10.5772/intechopen.82873
  [BibTeX] [Abstract] [Download PDF]
  

  Fallopia japonica as an invasive alien species in Europe and North America presents a significant problem to the existing flora as well as to infrastructures and agricultural land. That is why measures and attempts to control the plant are increasing rapidly. However, conservationists are not yet able to agree on the most suitable method. In the research project ‘Game of Clones’, a team of scientists together with the help of high school students is spatially modeling the spreading behavior of knotweed under different circumstances and is creating and providing a board game as well as a computer simulation as an experimental platform. To develop sustainable assumptions to be able to model the responses of knotweed to each control measure, a vast understanding of the plant is necessary. The chapter covers the results of research activities and experiments within the project and gives a comprehensive review about Japanese knotweed.

  @incollection{0f4de0c46faef0bb016fb341a4f001e7,
  author = {Fuchs, Anneliese and Pichler-Koban, Christina and Elmenreich, Wilfried and Jungmeier, Michael},
  title = {{Game of Clones: Students Model the Dispersal and Fighting of Japanese Knotweed (Fallopia japonica)}},
  booktitle = {Diversity and Ecology of Invasive Plants},
  publisher = {IntechOpen},
  year = {2019},
  abstract = {Fallopia japonica as an invasive alien species in Europe and North America presents a significant problem to the existing flora as well as to infrastructures and agricultural land. That is why measures and attempts to control the plant are increasing rapidly. However, conservationists are not yet able to agree on the most suitable method. In the research project ‘Game of Clones’, a team of scientists together with the help of high school students is spatially modeling the spreading behavior of knotweed under different circumstances and is creating and providing a board game as well as a computer simulation as an experimental platform. To develop sustainable assumptions to be able to model the responses of knotweed to each control measure, a vast understanding of the plant is necessary. The chapter covers the results of research activities and experiments within the project and gives a comprehensive review about Japanese knotweed.},
  doi = {10.5772/intechopen.82873},
  editor = {Sudam Charan Sahu and Sanjeet Kumar},
  pages = {243--263},
  address = {London},
  month = {12},
  url = {https://www.intechopen.com/chapter/pdf-download/65049},
  }

• S. Borkotoky, U. Schilcher, and C. Bettstetter, “Cooperative Relaying in LoRa Sensor Networks,” in Proc. IEEE Global Communications Conference 2019, Piscataway (NJ), 2019. doi:10.1109/GLOBECOM38437.2019.9014071
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76f22b734016f22cb2922004a,
  author = {Borkotoky, Siddhartha and Schilcher, Udo and Bettstetter, Christian},
  title = {{Cooperative Relaying in LoRa Sensor Networks}},
  booktitle = {Proc. IEEE Global Communications Conference 2019},
  year = {2019},
  doi = {10.1109/GLOBECOM38437.2019.9014071},
  series = {GLOBECOM},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/9014071},
  }

• W. Elmenreich, P. Moll, S. Theuermann, and M. Lux, “Making simulation results reproducible – Survey, guidelines, and examples based on Gradle and Docker,” PeerJ Computer Science, vol. 5, iss. e240, p. 1–27, 2019. doi:10.7717/peerj-cs.240
  [BibTeX] [Abstract] [Download PDF]
  

  This article addresses two research questions related to reproducibility within the context of research related to computer science. First, a survey on reproducibility addressed to researchers in the academic and private sectors is described and evaluated. The survey indicates a strong need for open and easily accessible results, in particular, reproducing an experiment should not require too much effort. The results of the survey are then used to formulate guidelines for making research results reproducible. In addition, this article explores four approaches based on software tools that could bring forward reproducibility in research results. After a general analysis of tools, three examples are further investigated based on actual research projects which are used to evaluate previously introduced tools. Results indicate that the evaluated tools contribute well to making simulation results reproducible but due to conflicting requirements, none of the presented solutions fulfills all intended goals perfectly.

  @article{0f4de0c76eea1b3b016eeb91013c00fa,
  author = {Elmenreich, Wilfried and Moll, Philipp and Theuermann, Sebastian and Lux, Mathias},
  title = {{Making simulation results reproducible - Survey, guidelines, and examples based on Gradle and Docker}},
  journal = { PeerJ Computer Science },
  year = {2019},
  abstract = {This article addresses two research questions related to reproducibility within the context of research related to computer science. First, a survey on reproducibility addressed to researchers in the academic and private sectors is described and evaluated. The survey indicates a strong need for open and easily accessible results, in particular, reproducing an experiment should not require too much effort. The results of the survey are then used to formulate guidelines for making research results reproducible. In addition, this article explores four approaches based on software tools that could bring forward reproducibility in research results. After a general analysis of tools, three examples are further investigated based on actual research projects which are used to evaluate previously introduced tools. Results indicate that the evaluated tools contribute well to making simulation results reproducible but due to conflicting requirements, none of the presented solutions fulfills all intended goals perfectly.},
  doi = {10.7717/peerj-cs.240},
  volume = {5},
  number = {e240},
  pages = {1--27},
  month = {12},
  url = {https://peerj.com/articles/cs-240.pdf},
  }

• SavegameBerlin und London: Springer Nature, 2019. doi:10.1007/978-3-658-27395-8
  [BibTeX] [Download PDF]

  @proceedings{0f4de0c66ed59216016ed65bc19600c0,
  title = {{Savegame}},
  year = {2019},
  editor = {Elmenreich, Wilfried and Schallegger, René Reinhold and Schniz, Felix and Gabriel, Sonja and Pölsterl, Gerhard and Ruge, Wolfgang B.},
  doi = {10.1007/978-3-658-27395-8},
  series = {Perspektiven der Game Studies},
  address = {Berlin und London},
  month = {12},
  publisher = {Springer Nature},
  url = {https://www.springer.com/de/book/9783658273941},
  }

• W. Elmenreich, “Short Games,” in Savegame, Berlin und London, 2019, p. 41–53. doi:10.1007/978-3-658-27395-8_4
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66ed59216016ed66fc0440130,
  author = {Elmenreich, Wilfried},
  title = {{Short Games}},
  booktitle = {Savegame},
  year = {2019},
  editor = {Wilfried Elmenreich and René Reinhold Schallegger and Felix Schniz and Sonja Gabriel and Gerhard Pölsterl and Wolfgang B. Ruge},
  doi = {10.1007/978-3-658-27395-8\_4},
  series = {Perspektiven der Game Studies},
  pages = {41--53},
  address = {Berlin und London},
  month = {12},
  publisher = {Springer Nature},
  url = {https://mobile.aau.at/publications/elmenreich-2019-Short\_Games-Preprint.pdf},
  }

• D. Neuhold, C. Bettstetter, and A. F. Molisch, “HiPR: High-Precision UWB Ranging for Sensor Networks,” in Proceedings of the 22nd Int. ACM Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems, New York, NY, 2019, p. 103–107. doi:10.1145/3345768.3355931
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4849829f001849a52fe280086,
  author = {Neuhold, Daniel and Bettstetter, Christian and Molisch, Andreas F.},
  title = {{HiPR: High-Precision UWB Ranging for Sensor Networks}},
  booktitle = {Proceedings of the 22nd Int. ACM Conf. on Modeling, Analysis and Simulation of Wireless and Mobile Systems},
  year = {2019},
  doi = {10.1145/3345768.3355931},
  pages = {103--107},
  address = {New York, NY},
  month = {11},
  publisher = {ACM - New York},
  url = {https://dl.acm.org/doi/10.1145/3345768.3355931},
  }

• A. Barcis, M. Barcis, and C. Bettstetter, “Robots that Sync and Swarm: A Proof of Concept in ROS 2,” in International Symposium on Multi-Robot and Multi-Agent Systems (MRS), Piscataway (NJ), 2019. doi:10.1109/MRS.2019.8901095
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76fcde7f5016fd224b498039c,
  author = {Barcis, Agata and Barcis, Michal and Bettstetter, Christian},
  title = {{Robots that Sync and Swarm: A Proof of Concept in ROS 2}},
  booktitle = {International Symposium on Multi-Robot and Multi-Agent Systems (MRS)},
  year = {2019},
  doi = {10.1109/MRS.2019.8901095},
  address = {Piscataway (NJ)},
  month = {11},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8901095},
  }

• C. Klemenjak, A. Reinhardt, L. Pereira, M. Berges, S. Makonin, and W. Elmenreich, “Electricity Consumption Data Sets: Pitfalls and Opportunities,” in BuildSys ’19: The 6th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation, 2019, p. 1–4. doi:10.1145/3360322.3360867
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76dcf8038016dd00f34580011,
  author = {Klemenjak, Christoph and Reinhardt, Andreas and Pereira, Lucas and Berges, Mario and Makonin, Stephen and Elmenreich, Wilfried},
  title = {{Electricity Consumption Data Sets: Pitfalls and Opportunities}},
  booktitle = {BuildSys ’19: The 6th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation},
  year = {2019},
  doi = {10.1145/3360322.3360867},
  pages = {1--4},
  month = {11},
  publisher = {ACM New York},
  url = {http://makonin.com/doc/BuildSys\_2019.pdf},
  }

• F. Passerini and A. M. Tonello, “Smart Grid Monitoring Using Power Line Modems: Anomaly Detection and Localization,” IEEE Transactions on Smart Grid, vol. 10, iss. 6, p. 6178–6186, 2019. doi:10.1109/TSG.2019.2899264
  [BibTeX] [Abstract] [Download PDF]
  

  The main subject of this paper is the sensing of network anomalies that span from harmless impedance changes at some network termination to more or less pronounced electrical faults, considering also cable degradation over time. In this paper, we present how to harvest information about such anomalies in distribution grids using high frequency signals spanning from few kHz to several MHz. Given the wide bandwidth considered, we rely on power line modems as network sensors. We firstly discuss the front-end architectures needed to perform the measurement and then introduce two algorithms to detect, classify and locate the different kinds of network anomalies listed above. Simulation results are finally presented. They validate the concept of sensing in smart grids using power line modems and show the efficiency of the proposed algorithms.

  @article{0f4de0c76c1e706c016c1f41d640015b,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Smart Grid Monitoring Using Power Line Modems: Anomaly Detection and Localization}},
  journal = {IEEE Transactions on Smart Grid},
  year = {2019},
  abstract = {The main subject of this paper is the sensing of network anomalies that span from harmless impedance changes at some network termination to more or less pronounced electrical faults, considering also cable degradation over time. In this paper, we present how to harvest information about such anomalies in distribution grids using high frequency signals spanning from few kHz to several MHz. Given the wide bandwidth considered, we rely on power line modems as network sensors. We firstly discuss the front-end architectures needed to perform the measurement and then introduce two algorithms to detect, classify and locate the different kinds of network anomalies listed above. Simulation results are finally presented. They validate the concept of sensing in smart grids using power line modems and show the efficiency of the proposed algorithms.},
  doi = {10.1109/TSG.2019.2899264},
  volume = {10},
  number = {6},
  pages = {6178--6186},
  month = {11},
  url = {https://ieeexplore.ieee.org/document/8641473},
  }

• A. Ebrahimi Jarihani, S. Sarafi, M. Köberle, J. Sturm, and A. M. Tonello, “Characterization of On-Chip Interconnects: Case Study in 28 nm CMOS Technology,” in 2019 Austrochip Workshop on Microelectronics (Austrochip), Piscataway (NJ), 2019, p. 93–99. doi:10.1109/Austrochip.2019.00028
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66f872464016f89f3ad87028f,
  author = {Ebrahimi Jarihani, Arash and Sarafi, Sahar and Köberle, Michael and Sturm, Johannes and Tonello, Andrea M.},
  title = {{Characterization of On-Chip Interconnects: Case Study in 28 nm CMOS Technology}},
  booktitle = {2019 Austrochip Workshop on Microelectronics (Austrochip)},
  year = {2019},
  doi = {10.1109/Austrochip.2019.00028},
  pages = {93--99},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8904615/keywords\#keywords},
  }

• C. Raffelsberger, R. Muzaffar, and C. Bettstetter, “A Performance Evaluation Tool for Drone Communications in 4G Cellular Networks,” in Proc. of the 2019 16th International Symposium on Wireless Communication Systems (ISWCS), 2019. doi:10.1109/ISWCS.2019.8877360
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c4766986ca01766c0e1ce6015a,
  author = {Raffelsberger, Christian and Muzaffar, Raheeb and Bettstetter, Christian},
  title = {{A Performance Evaluation Tool for Drone Communications in 4G Cellular Networks}},
  booktitle = {Proc. of the 2019 16th International Symposium on Wireless Communication Systems (ISWCS)},
  year = {2019},
  doi = {10.1109/ISWCS.2019.8877360},
  month = {10},
  publisher = {IEEE Xplore Digital Library},
  url = {https://arxiv.org/abs/1905.00115},
  }

• D. Righini, N. A. Letizia, and A. M. Tonello, “Synthetic Power Line Communications Channel Generation with Autoencoders and GANs,” in IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids 2019 (SmartGridComm 2019), New York, 2019, p. 1–6. doi:10.1109/SmartGridComm.2019.8909700
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f728ebc030d,
  author = {Righini, Davide and Letizia, Nunzio Alexandro and Tonello, Andrea M.},
  title = {{Synthetic Power Line Communications Channel Generation with Autoencoders and GANs}},
  booktitle = {IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids 2019 (SmartGridComm 2019)},
  year = {2019},
  doi = {10.1109/SmartGridComm.2019.8909700},
  pages = {1--6},
  address = {New York},
  month = {10},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8909700},
  }

• M. Umlauft and W. Elmenreich, “Topology Characterization for Position-based Wireless Network Topology Generators,” in 15th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2019), Piscataway (NJ), 2019. doi:10.1109/WiMOB.2019.8923522
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76ed6bd7d016ed70dfcff0009,
  author = {Umlauft, Martina and Elmenreich, Wilfried},
  title = {{Topology Characterization for Position-based Wireless Network Topology Generators}},
  booktitle = {15th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2019) },
  year = {2019},
  editor = {Anna Maria Vegni},
  doi = {10.1109/WiMOB.2019.8923522},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://mobile.aau.at/publications/umlauft-2019-Topology\_Characterization\_for\_\_Position\_based\_Wireless\_Network\_Topology\_Generators.pdf},
  }

• J. Karpić, E. Sharma, T. Khatib, and W. Elmenreich, “Comparison of solar power measurements in alpine areas using a mobile dual-axis tracking system,” Energy Informatics, vol. 2(Suppl 1), iss. 23, p. 1–14, 2019. doi:10.1186/s42162-019-0091-1
  [BibTeX] [Download PDF]

  @article{0f4de0c66db577c0016db5b971550031,
  author = {Karpić, Jelenko and Sharma, Ekanki and Khatib, Tamer and Elmenreich, Wilfried},
  title = {{Comparison of solar power measurements in alpine areas using a mobile dual-axis tracking system}},
  journal = {Energy Informatics},
  year = {2019},
  doi = {10.1186/s42162-019-0091-1},
  volume = {2(Suppl 1)},
  number = {23},
  pages = {1--14},
  month = {9},
  url = {https://energyinformatics.springeropen.com/track/pdf/10.1186/s42162-019-0091-1},
  }

• K. Rabie, A. M. Tonello, N. Al-Dhahir, J. Song, and A. Sendin, “Guest Editorial on Advances in Power Line Communication and its Applications,” IEEE Access, vol. 6, p. 2169–3536, 2019. doi:10.1109/ACCESS.2019.2942516
  [BibTeX] [Abstract] [Download PDF]
  

  Power line communication (PLC) is a growing technology which utilizes the existing pre-installed power delivery infrastructure for data transmission. While it is true that the history of PLC technology goes back to the beginning of the last century, when the first data transmission over power lines took place for low data rate control and monitoring purposes, PLC has recently regained a considerable amount of research attention due to the dawn of the internet and the increasing need for fast connectivity. PLC is also expected to serve as a reliable communication medium for many emerging applications of Internet of Things (IoT) and Smart Grids (SGs).

  @article{0f4de0c66f854a53016f864469ce0191,
  author = {Rabie, Khaled and Tonello, Andrea M. and Al-Dhahir, Naofal and Song, Jian and Sendin, Alberto},
  title = {{Guest Editorial on Advances in Power Line Communication and its Applications}},
  journal = {IEEE Access},
  year = {2019},
  abstract = {Power line communication (PLC) is a growing technology which utilizes the existing pre-installed power delivery infrastructure for data transmission. While it is true that the history of PLC technology goes back to the beginning of the last century, when the first data transmission over power lines took place for low data rate control and monitoring purposes, PLC has recently regained a considerable amount of research attention due to the dawn of the internet and the increasing need for fast connectivity. PLC is also expected to serve as a reliable communication medium for many emerging applications of Internet of Things (IoT) and Smart Grids (SGs).},
  doi = {10.1109/ACCESS.2019.2942516},
  volume = {6},
  pages = {2169--3536},
  month = {9},
  url = {https://ieeexplore.ieee.org/document/8847672},
  }

• D. Borovina, M. Zajc, A. Mujcic, A. M. Tonello, and N. Suljanovic, “Error Performance Analysis and Modeling of Narrow-band PLC Technology Enabling Smart Metering Systems,” International Journal of Electrical Power & Energy Systems, p. 1–10, 2019. doi:10.1016/j.ijepes.2019.105536
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents an error performance analysis and a model of a narrow-band power line carrier (PLC) system for smart metering. Our work is founded on complex analysis based on the probability theory using limited, long-term measurement data of a rural 400 V distribution grid during operation. To obtain confident results, the analysis and modeling of the error performance were done in two steps. In the first step, the Neyman contagious distribution, originally derived in the fields of entomology and bacteriology, was applied to describe the probability distribution of errors in messages in consideration of the impulsive noise in the PLC channel and the influence of forward error correction techniques. In the second step, assuming the bit error rate (BER) was a random variable, where errors are randomly distributed in the sample rather than clustered into messages, the confidence interval of the true BER was calculated for different SNR values. The results served as a foundation for the error performance model proposed in this paper. The presented work is crucial for the research of upper layer communication protocols performance incorporating advanced phenomena at the physical layer.

  @article{0f4de0c66f854a53016f8650baef01db,
  author = {Borovina, Dzemo and Zajc, Matej and Mujcic, Aljo and Tonello, Andrea M. and Suljanovic, Nermin},
  title = {{Error Performance Analysis and Modeling of Narrow-band PLC Technology Enabling Smart Metering Systems}},
  journal = {International Journal of Electrical Power \& Energy Systems},
  year = {2019},
  abstract = {This paper presents an error performance analysis and a model of a narrow-band power line carrier (PLC) system for smart metering. Our work is founded on complex analysis based on the probability theory using limited, long-term measurement data of a rural 400 V distribution grid during operation. To obtain confident results, the analysis and modeling of the error performance were done in two steps. In the first step, the Neyman contagious distribution, originally derived in the fields of entomology and bacteriology, was applied to describe the probability distribution of errors in messages in consideration of the impulsive noise in the PLC channel and the influence of forward error correction techniques. In the second step, assuming the bit error rate (BER) was a random variable, where errors are randomly distributed in the sample rather than clustered into messages, the confidence interval of the true BER was calculated for different SNR values. The results served as a foundation for the error performance model proposed in this paper. The presented work is crucial for the research of upper layer communication protocols performance incorporating advanced phenomena at the physical layer.},
  doi = {10.1016/j.ijepes.2019.105536},
  pages = {1--10},
  month = {9},
  url = {https://www.sciencedirect.com/science/article/pii/S0142061519309184\#ab005},
  }

• M. K. Atiq, U. Schilcher, and C. Bettstetter, “On Interference Pikes in Poisson Networks,” in Proc. European Signal Processing Conference 2019, Piscataway (NJ), 2019, p. 1–5. doi:10.23919/EUSIPCO.2019.8902721
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66f1f15ed016f22b197cd00f6,
  author = {Atiq, Mahin Khushbakht and Schilcher, Udo and Bettstetter, Christian},
  title = {{On Interference Pikes in Poisson Networks}},
  booktitle = {Proc. European Signal Processing Conference 2019},
  year = {2019},
  doi = {10.23919/EUSIPCO.2019.8902721},
  volume = {27},
  series = {EUSIPCO},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8902721},
  }

• B. Salamat and A. M. Tonello, “A Modelling Approach to Generate Representative UAV Trajectories Using PSO,” in 27th European Signal Processing Conference (EUSIPCO 2019), Piscataway (NJ), 2019, p. 1–5. doi:10.23919/EUSIPCO.2019.8902345
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66f872464016f89fcee8c02d3,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{A Modelling Approach to Generate Representative UAV Trajectories Using PSO}},
  booktitle = {27th European Signal Processing Conference (EUSIPCO 2019)},
  year = {2019},
  doi = {10.23919/EUSIPCO.2019.8902345},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8902345/keywords\#keywords},
  }

• A. Pin, R. Rinaldo, A. M. Tonello, C. Marshall, M. Driusso, A. Biason, and A. Dalla Torre, “LTE Ranging Measurement Using Uplink Opportunistic Signals and the SAGE algorithm,” in 27th European Signal Processing Conference (EUSIPCO 2019), Piscataway (NJ), 2019, p. 1–5. doi:10.23919/EUSIPCO.2019.8902842
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66f872464016f8a0a880302ea,
  author = {Pin, Alessandro and Rinaldo, Roberto and Tonello, Andrea M. and Marshall, Chris and Driusso, Marco and Biason, Alessandro and Dalla Torre, Andrea},
  title = {{LTE Ranging Measurement Using Uplink Opportunistic Signals and the SAGE algorithm}},
  booktitle = {27th European Signal Processing Conference (EUSIPCO 2019)},
  year = {2019},
  doi = {10.23919/EUSIPCO.2019.8902842},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {9},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8902842},
  }

• A. Barcis and C. Bettstetter, “Beyond Sync: Distributed Temporal Coordination and Its Implementation in a Multi-Robot System,” in International Conference on Self-Adaptive and Self-Organizing Systems (SASO), Piscataway (NJ), 2019. doi:10.1109/SASO.2019.00020
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76fcde7f5016fd2850ce004ec,
  author = {Barcis, Agata and Bettstetter, Christian},
  title = {{Beyond Sync: Distributed Temporal Coordination and Its Implementation in a Multi-Robot System}},
  booktitle = {International Conference on Self-Adaptive and Self-Organizing Systems (SASO)},
  year = {2019},
  doi = {10.1109/SASO.2019.00020},
  address = {Piscataway (NJ)},
  month = {8},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8780556},
  }

• E. Khatmi, W. Elmenreich, K. Wogatai, M. M. Schranz, M. Umlauft, W. Laure, and A. Wuttei, “Swarm Intelligence Layer to ControlAutonomous Agents (SWILT),” in CEUR Workshop Proceedings, Aachen, 2019, p. 91–96.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c108a23016c1a03db400207,
  author = {Khatmi, Elnaz and Elmenreich, Wilfried and Wogatai, Kristina and Schranz, Melanie Marianne and Umlauft, Martina and Laure, Walter and Wuttei, Andreas},
  title = {{Swarm Intelligence Layer to ControlAutonomous Agents (SWILT)}},
  booktitle = {CEUR Workshop Proceedings},
  year = {2019},
  pages = {91--96},
  address = {Aachen},
  month = {7},
  publisher = {CEUR Workshop Proceedings (CEUR-WS.org)},
  url = {http://ceur-ws.org/Vol-2405/16\_paper.pdf},
  }

• M. Jdeed, M. Schranz, A. Bagnato, S. Suleri, G. Prato, D. Conzon, M. Sende, E. Brosse, C. Pastrone, and W. Elmenreich, “The CPSwarm Technology for Designing Swarms of Cyber-Physical Systems,” in CEUR Workshop Proceedings, Aachen, 2019, p. 85–90.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c108a23016c19a1cea000b7,
  author = {Jdeed, Midhat and Schranz, Melanie and Bagnato, Alessandra and Suleri, Sarah and Prato, Gianluca and Conzon, Davide and Sende, Micha and Brosse, Etienne and Pastrone, Claudio and Elmenreich, Wilfried},
  title = {{The CPSwarm Technology for Designing Swarms of Cyber-Physical Systems}},
  booktitle = {CEUR Workshop Proceedings},
  year = {2019},
  pages = {85--90},
  address = {Aachen},
  month = {7},
  publisher = {CEUR Workshop Proceedings (CEUR-WS.org)},
  url = {http://ceur-ws.org/Vol-2405/15\_paper.pdf},
  }

• M. Sende, D. Conzon, A. Pitman, M. M. Schranz, E. Ferrera, M. Jdeed, C. Pastrone, and W. Elmenreich, “Scalable Distributed Simulation for Evolutionary Optimization of Swarms of Cyber-Physical Systems ,” International Journal On Advances in Systems and Measurements, vol. 12, iss. 1/2, p. 135–147, 2019.
  [BibTeX] [Abstract] [Download PDF]
  

  Swarms of cyber-physical systems can be used to tackle many challenges that traditional multi-robot systems fail to address. In particular, the self-organizing nature of swarms ensures they are both scalable and adaptable. Such benefits come at the cost of having a highly complex system that is extremely hard to design manually. Therefore, an automated process is required for designing the local interactions between the cyber-physical systems that lead to the desired swarm behavior. In this work, the authors employ evolutionary design methodologies to generate the local controllers of the cyber-physical systems. This requires many simulation runs, which can be parallelized. Two approaches are proposed for distributing simulations among multiple servers. First, an approach where the distributed simulators are controlled centrally and second, a distributed approach where the controllers are exported to the simulators running stand-alone. The authors show that the distributed approach is suited for most scenarios and propose a network-based architecture. To evaluate the performance, the authors provide an implementation that builds upon the eXtensible Messaging and Presence Protocol (XMPP) and supersedes a previous implementation based on the Message Queue Telemetry Transport (MQTT) protocol. Measurements of the total optimization time show that it outperforms the previous implementation in certain cases by a factor greater than three. A scalability analysis shows that it is inversely proportional to the number of simulation servers and scales very well. Finally, a proof of concept demonstrates the ability to deploy the resulting controller onto cyber-physical systems. The results demonstrate the flexibility of the architecture and its performance. Therefore, it is well suited for distributing the simulation workload among multiple servers.

  @article{0f4de0c66ce2fd3d016cf27be77d00f4,
  author = {Sende, Micha and Conzon, Davide and Pitman, Arthur and Schranz, Melanie Marianne and Ferrera, Enrico and Jdeed, Midhat and Pastrone, Claudio and Elmenreich, Wilfried},
  title = {{Scalable Distributed Simulation for Evolutionary Optimization of Swarms of Cyber-Physical Systems }},
  journal = {International Journal On Advances in Systems and Measurements},
  year = {2019},
  abstract = {Swarms of cyber-physical systems can be used to tackle many challenges that traditional multi-robot systems fail to address. In particular, the self-organizing nature of swarms ensures they are both scalable and adaptable. Such benefits come at the cost of having a highly complex system that is extremely hard to design manually. Therefore, an automated process is required for designing the local interactions between the cyber-physical systems that lead to the desired swarm behavior. In this work, the authors employ evolutionary design methodologies to generate the local controllers of the cyber-physical systems. This requires many simulation runs, which can be parallelized. Two approaches are proposed for distributing simulations among multiple servers. First, an approach where the distributed simulators are controlled centrally and second, a distributed approach where the controllers are exported to the simulators running stand-alone. The authors show that the distributed approach is suited for most scenarios and propose a network-based architecture. To evaluate the performance, the authors provide an implementation that builds upon the eXtensible Messaging and Presence Protocol (XMPP) and supersedes a previous implementation based on the Message Queue Telemetry Transport (MQTT) protocol. Measurements of the total optimization time show that it outperforms the previous implementation in certain cases by a factor greater than three. A scalability analysis shows that it is inversely proportional to the number of simulation servers and scales very well. Finally, a proof of concept demonstrates the ability to deploy the resulting controller onto cyber-physical systems. The results demonstrate the flexibility of the architecture and its performance. Therefore, it is well suited for distributing the simulation workload among multiple servers.},
  volume = {12},
  number = {1/2},
  pages = {135--147},
  month = {6},
  url = {http://www.thinkmind.org/download.php?articleid=sysmea\_v12\_n12\_2019\_13},
  }

• S. Hayat, C. Bettstetter, A. Fakhreddine, R. Muzaffar, and D. Emini, “An Experimental Evaluation of LTE-A Throughput for Drones,” in DroNet’19 Proceedings of the 5th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications, New York, NY, 2019, p. 3–8. doi:10.1145/3325421.3329765
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66bfc4c24016bfffa55af016c,
  author = {Hayat, Samira and Bettstetter, Christian and Fakhreddine, Aymen and Muzaffar, Raheeb and Emini, Driton},
  title = {{An Experimental Evaluation of LTE-A Throughput for Drones}},
  booktitle = {DroNet'19 Proceedings of the 5th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications},
  year = {2019},
  doi = {10.1145/3325421.3329765},
  pages = {3--8},
  address = {New York, NY},
  month = {6},
  publisher = {ACM Digital Library},
  url = {https://doi.org/10.1145/3325421.3329765},
  }

• A. Fakhreddine, C. Bettstetter, S. Hayat, D. Emini, and R. Muzaffar, “Handover challenges for cellular-connected drones,” in DroNet’19 Proceedings of the 5th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications, New York, NY, 2019, p. 9–14. doi:10.1145/3325421.3329770
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66bfc4c24016bfff15a040145,
  author = {Fakhreddine, Aymen and Bettstetter, Christian and Hayat, Samira and Emini, Driton and Muzaffar, Raheeb},
  title = {{Handover challenges for cellular-connected drones}},
  booktitle = {DroNet'19 Proceedings of the 5th Workshop on Micro Aerial Vehicle Networks, Systems, and Applications},
  year = {2019},
  doi = {10.1145/3325421.3329770},
  pages = {9--14},
  address = {New York, NY},
  month = {6},
  publisher = {ACM Digital Library},
  url = {https://dl.acm.org/citation.cfm?id=3329770},
  }

• A. M. Tonello, N. A. Letizia, D. Righini, and F. Marcuzzi, “Machine Learning Tips and Tricks for Power Line Communications,” IEEE Access, vol. 7, p. 82434–84452, 2019. doi:10.1109/ACCESS.2019.2923321
  [BibTeX] [Abstract] [Download PDF]
  

  A great deal of attention has been recently given to Machine Learning (ML) techniques in many different application fields. This paper provides a vision of what ML can do in Power Line Communications (PLC). We first and briefly describe classical formulations of the ML, and distinguish deterministic from statistical learning models with relevance to communications. We then discuss ML applications in PLC for each layer, namely, for characterization and modeling, for the development of physical layer algorithms, for media access control and networking. Finally, other applications of the PLC that can benefit from the usage of ML, as grid diagnostics, are analyzed. Illustrative numerical examples are reported to serve the purpose of validating the ideas and motivate future research endeavors in this stimulating signal/data processing field.

  @article{0f4de0c76c1e706c016c1f28d55600b3,
  author = {Tonello, Andrea M. and Letizia, Nunzio Alexandro and Righini, Davide and Marcuzzi, Francesco},
  title = {{Machine Learning Tips and Tricks for Power Line Communications}},
  journal = {IEEE Access},
  year = {2019},
  abstract = {A great deal of attention has been recently given to Machine Learning (ML) techniques in many different application fields. This paper provides a vision of what ML can do in Power Line Communications (PLC). We first and briefly describe classical formulations of the ML, and distinguish deterministic from statistical learning models with relevance to communications. We then discuss ML applications in PLC for each layer, namely, for characterization and modeling, for the development of physical layer algorithms, for media access control and networking. Finally, other applications of the PLC that can benefit from the usage of ML, as grid diagnostics, are analyzed. Illustrative numerical examples are reported to serve the purpose of validating the ideas and motivate future research endeavors in this stimulating signal/data processing field.},
  doi = {10.1109/ACCESS.2019.2923321},
  volume = {7},
  pages = {82434--84452},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/8737766},
  }

• A. M. Tonello, Learning, processing and communication in smart energy grids, 2019. doi:10.1109/IWSSIP.2019.8787288
  [BibTeX] [Abstract] [Download PDF]
  

  The introduction of renewables and the goal of increasing efficiency and reliability is revolutionizing energy grids. Energy grids must become intelligent and be able to manage energy flows and flexibly adapt to changes in production and demand. This paradigm has fostered the creation of new business models on top of technology advances. The physical infrastructure must embed sensing, communication and processing capabilities. This talk will provide an overview of relevant applications (from metering and diagnostics to energy management) and discuss the role of sensing, processing and inference. It will also cover relevant communication technologies to provide connectivity and in particular new applications of power line communication that enable grid diagnostics by processing high frequency signals. In this context, we will also elaborate on the concept of learning the system model and discuss how top-down phenomenological approaches followed by machine learning paradigms can be merged with bottom-up physical domain approaches.

  @misc{0f4de0c66f872464016f8a1249d10324,
  abstract = {The introduction of renewables and the goal of increasing efficiency and reliability is revolutionizing energy grids. Energy grids must become intelligent and be able to manage energy flows and flexibly adapt to changes in production and demand. This paradigm has fostered the creation of new business models on top of technology advances. The physical infrastructure must embed sensing, communication and processing capabilities. This talk will provide an overview of relevant applications (from metering and diagnostics to energy management) and discuss the role of sensing, processing and inference. It will also cover relevant communication technologies to provide connectivity and in particular new applications of power line communication that enable grid diagnostics by processing high frequency signals. In this context, we will also elaborate on the concept of learning the system model and discuss how top-down phenomenological approaches followed by machine learning paradigms can be merged with bottom-up physical domain approaches.},
  doi = {10.1109/IWSSIP.2019.8787288},
  author = {Tonello, Andrea M.},
  title = {Learning, processing and communication in smart energy grids},
  howpublished = {Online},
  month = {6},
  year = {2019},
  isbn = {978-1-7281-3227-3},
  url = {https://ieeexplore.ieee.org/document/8787288},
  }

• C. Schmidt, J. L. Figueroa, J. E. Cousseau, and A. M. Tonello, “Pilot-Based TI-ADC Mismatch Error Calibration for IR-UWB Receivers,” IEEE Access, vol. 7, p. 74340–74350, 2019. doi:10.1109/ACCESS.2019.2921091
  [BibTeX] [Abstract] [Download PDF]
  

  In this work, we first provide an overview of the state of the art in mismatch error estimation and correction for time-interleaved analog to digital converters (TI-ADCs). Then, we present a novel pilot-based on-line adaptive timing mismatch error estimation approach for TI-ADCs in the context of an impulse radio ultra wideband (IR-UWB) receiver with correlation-based detection. We introduce the developed method and derive the expressions for both additive white Gaussian noise (AWGN) and Rayleigh multipath fading (RMPF) channels. We also derive a lower bound on the required ADC resolution to attain a certain estimation precision. Simulations show the effectiveness of the technique when combined with an adequate compensator. We analyze the estimation error behavior as a function of signal to noise ratio (SNR) and investigate the ADC performance before and after compensation. While all mismatches combined cause the effective number of bits (ENOB) to drop to 3 bits and to 6 bits when considering only timing mismatch, estimation and correction of these errors with the proposed technique can restore a close to ideal behavior. We also show the performance loss at the receiver in terms of bit error rate (BER) and how compensation is able to significantly improve performance.

  @article{0f4de0c76c1e706c016c1f2e938100cc,
  author = {Schmidt, Christian and Figueroa, José L. and Cousseau, Juan E. and Tonello, Andrea M.},
  title = {{Pilot-Based TI-ADC Mismatch Error Calibration for IR-UWB Receivers}},
  journal = {IEEE Access},
  year = {2019},
  abstract = {In this work, we first provide an overview of the state of the art in mismatch error estimation and correction for time-interleaved analog to digital converters (TI-ADCs). Then, we present a novel pilot-based on-line adaptive timing mismatch error estimation approach for TI-ADCs in the context of an impulse radio ultra wideband (IR-UWB) receiver with correlation-based detection. We introduce the developed method and derive the expressions for both additive white Gaussian noise (AWGN) and Rayleigh multipath fading (RMPF) channels. We also derive a lower bound on the required ADC resolution to attain a certain estimation precision. Simulations show the effectiveness of the technique when combined with an adequate compensator. We analyze the estimation error behavior as a function of signal to noise ratio (SNR) and investigate the ADC performance before and after compensation. While all mismatches combined cause the effective number of bits (ENOB) to drop to 3 bits and to 6 bits when considering only timing mismatch, estimation and correction of these errors with the proposed technique can restore a close to ideal behavior. We also show the performance loss at the receiver in terms of bit error rate (BER) and how compensation is able to significantly improve performance.},
  doi = {10.1109/ACCESS.2019.2921091},
  volume = {7},
  pages = {74340--74350},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/8731991},
  }

• H. T. Haider, D. H. Muhsen, H. I. Shahadi, O. H. See, and W. Elmenreich, “Dynamic Smart Grid Communication Parameters based Cognitive Radio Network,” Acta Polytechnica, Journal of Advanced Engineering, vol. 59, iss. 3, p. 248–259, 2019. doi:10.14311/AP.2019.59.0248
  [BibTeX] [Abstract] [Download PDF]
  

  The demand for more spectrums in a smart grid communication network is a significant challenge in originally scarce spectrum resources. Cognitive radio (CR) is a powerful technique for solving the spectrum scarcity problem by adapting the transmission parameters according to predefined objectives in an active wireless communication network. This paper presents a cognitive radio decision engine that dynamically selects optimal radio transmission parameters for wireless home area networks (HAN) of smart grid applications via the multi-objective differential evolution (MODE) optimization method. The proposed system helps to drive optimal communication parameters to realize power saving, maximum throughput and minimum bit error rate communication modes. A differential evolution algorithm is used to select the optimal transmission parameters for given communication modes based on a fitness function that combines multiple objectives based on appropriate weights. Simulation results highlight the superiority of the proposed system in terms of accuracy and convergence as compared with other evolution algorithms (genetic optimization, particle swarm optimization, and ant colony optimization) for different communication modes (power saving mode, high throughput mode, emergency communication mode, and balanced mode).

  @article{0f4de0c76bd74f74016be0d089310314,
  author = {Haider, Haider Tarish and Muhsen, Dhiaa Halboot and Shahadi, Haider Ismael and See, Ong Hang and Elmenreich, Wilfried},
  title = {{Dynamic Smart Grid Communication Parameters based Cognitive Radio Network}},
  journal = {Acta Polytechnica, Journal of Advanced Engineering},
  year = {2019},
  abstract = {The demand for more spectrums in a smart grid communication network is a significant challenge in originally scarce spectrum resources. Cognitive radio (CR) is a powerful technique for solving the spectrum scarcity problem by adapting the transmission parameters according to predefined objectives in an active wireless communication network. This paper presents a cognitive radio decision engine that dynamically selects optimal radio transmission parameters for wireless home area networks (HAN) of smart grid applications via the multi-objective differential evolution (MODE) optimization method. The proposed system helps to drive optimal communication parameters to realize power saving, maximum throughput and minimum bit error rate communication modes. A differential evolution algorithm is used to select the optimal transmission parameters for given communication modes based on a fitness function that combines multiple objectives based on appropriate weights. Simulation results highlight the superiority of the proposed system in terms of accuracy and convergence as compared with other evolution algorithms (genetic optimization, particle swarm optimization, and ant colony optimization) for different communication modes (power saving mode, high throughput mode, emergency communication mode, and balanced mode).},
  doi = {10.14311/AP.2019.59.0248},
  volume = {59},
  number = {3},
  pages = {248--259},
  month = {6},
  url = {https://ojs.cvut.cz/ojs/index.php/ap/article/viewFile/5194/5031},
  }

• P. Grippa, U. Schilcher, and C. Bettstetter, “On Access Control in Cabin-Based Transport Systems,” IEEE Transactions on Intelligent Transportation Systems, 2019. doi:10.1109/TITS.2018.2864551
  [BibTeX] [Abstract] [Download PDF]
  

  We analyze a boarding solution for a transport system in which the number of passengers allowed to enter a transport cabin is automatically controlled. Expressions characterizing the stochastic properties of the passenger queue length, waiting time, and cabin capacity are derived using queuing theory for a transport line with deterministic arrivals of cabins and Poisson arrivals of passengers. The expected cabin capacity and stability threshold for each station are derived for a general passenger arrival distribution. The results show that a significant reduction of the waiting time at a given station is only possible at the cost of making the stability of one of the preceding stations worse than that of the given station. Studies with real passenger arrivals are necessary to draw firm conclusions.

  @article{0f4de0c76674139d016676da39100088,
  author = {Grippa, Pasquale and Schilcher, Udo and Bettstetter, Christian},
  title = {{On Access Control in Cabin-Based Transport Systems}},
  journal = { IEEE Transactions on Intelligent Transportation Systems},
  year = {2019},
  abstract = {We analyze a boarding solution for a transport system in which the number of passengers allowed to enter a transport cabin is automatically controlled. Expressions characterizing the stochastic properties of the passenger queue length, waiting time, and cabin capacity are derived using queuing theory for a transport line with deterministic arrivals of cabins and Poisson arrivals of passengers. The expected cabin capacity and stability threshold for each station are derived for a general passenger arrival distribution. The results show that a significant reduction of the waiting time at a given station is only possible at the cost of making the stability of one of the preceding stations worse than that of the given station. Studies with real passenger arrivals are necessary to draw firm conclusions.},
  doi = {10.1109/TITS.2018.2864551},
  month = {6},
  url = {https://doi.org/10.1109/TITS.2018.2864551},
  }

• P. Valet, D. Giotta, S. Trampitsch, and A. M. Tonello, “Switched State-Space Model for High Speed Current-Steering Digital-to-Analog Converter,” in International Symposium on Circuits and Systems 2019 (ISCAS 2019), Piscataway (NJ), 2019, p. 1–5. doi:10.1109/ISCAS.2019.8702247
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c968852cea016894bf815b0fc4,
  author = {Valet, Patrick and Giotta, Dario and Trampitsch, Stefan and Tonello, Andrea M.},
  title = {{Switched State-Space Model for High Speed Current-Steering Digital-to-Analog Converter}},
  booktitle = {International Symposium on Circuits and Systems 2019 (ISCAS 2019)},
  year = {2019},
  doi = {10.1109/ISCAS.2019.8702247},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {5},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8702247},
  }

• S. Moaveninejad, A. Kumar, M. Elgenedy, M. Magarini, N. Al-Dhahir, and A. M. Tonello, “Gaussian-Middleton Classification of Cyclostationary Correlated Noise in Hybrid MIMO-OFDM WiNPLC,” in IEEE International Conference on Communications 2019 (ICC 2019), New York, 2019, p. 1–7. doi:10.1109/ICC.2019.8761152
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f460906017a,
  author = {Moaveninejad, Sadaf and Kumar, Atul and Elgenedy, Mahmoud and Magarini, Maurizio and Al-Dhahir, Naofal and Tonello, Andrea M.},
  title = {{Gaussian-Middleton Classification of Cyclostationary Correlated Noise in Hybrid MIMO-OFDM WiNPLC}},
  booktitle = { IEEE International Conference on Communications 2019 (ICC 2019) },
  year = {2019},
  doi = {10.1109/ICC.2019.8761152},
  pages = {1--7},
  address = {New York},
  month = {5},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8761152},
  }

• K. O’Keeffe and C. Bettstetter, “A Review of Swarmalators and Their Potential in Bio-Inspired Computing,” in Proc. SPIE Micro- and Nanotechnology Sensors, Systems, and Applications, San Jose (CA), 2019. doi:10.1117/12.2518682
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66aa1ced8016ab525571c00c2,
  author = {O’Keeffe, Kevin and Bettstetter, Christian},
  title = {{A Review of Swarmalators and Their Potential in Bio-Inspired Computing}},
  booktitle = {Proc. SPIE Micro- and Nanotechnology Sensors, Systems, and Applications},
  year = {2019},
  doi = {10.1117/12.2518682},
  volume = {10982},
  address = {San Jose (CA)},
  month = {5},
  publisher = {SPIE},
  url = {https://doi.org/10.1117/12.2518682},
  }

• S. Borkotoky, C. Bettstetter, U. Schilcher, and C. Raffelsberger, “Allocation of Repetition Redundancy in LoRa,” in European Wireless 2019, Frankfurt am Main, 2019, p. 61–66.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66d3a5e67016d3f38bec500db,
  author = {Borkotoky, Siddhartha and Bettstetter, Christian and Schilcher, Udo and Raffelsberger, Christian},
  title = {{Allocation of Repetition Redundancy in LoRa}},
  booktitle = {European Wireless 2019},
  year = {2019},
  pages = {61--66},
  address = {Frankfurt am Main},
  month = {5},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  url = {https://ieeexplore.ieee.org/document/8835940},
  }

• J. F. Schmidt, D. A. Chernov, M. Pauritsch, and C. Bettstetter, “Study of a Self-Powered UWB Sensor Network for Industrial Applications,” in European Wireless 2019, Frankfurt am Main, 2019, p. 77–82.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66bfc4c24016bff42d72f0088,
  author = {Schmidt, Jorge Friedrich and Chernov, Denis Alekseevich and Pauritsch, Manfred and Bettstetter, Christian},
  title = {{Study of a Self-Powered UWB Sensor Network for Industrial Applications}},
  booktitle = {European Wireless 2019},
  year = {2019},
  pages = {77--82},
  address = {Frankfurt am Main},
  month = {5},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  url = {https://ieeexplore.ieee.org/document/8835943},
  }

• D. Neuhold, J. F. Schmidt, C. Bettstetter, J. Sebald, and J. Klaue, “UWB Connectivity Inside a Space Launch Vehicle,” in European Wireless 2019, Frankfurt am Main, 2019, p. 142–145.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66bfc4c24016bff288f0d003c,
  author = {Neuhold, Daniel and Schmidt, Jorge Friedrich and Bettstetter, Christian and Sebald, Johannes and Klaue, Jirka},
  title = {{UWB Connectivity Inside a Space Launch Vehicle}},
  booktitle = {European Wireless 2019},
  year = {2019},
  pages = {142--145},
  address = {Frankfurt am Main},
  month = {5},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  url = {https://ieeexplore.ieee.org/document/8835953},
  }

• B. Rinner, “Can We Trust Smart Cameras,” Computer, vol. 52, iss. 5, p. 67–70, 2019. doi:10.1109/MC.2019.2905171
  [BibTeX]

  @article{0f4de0c66c1a9b90016c1d5e22a50044,
  author = {Rinner, Bernhard},
  title = {{Can We Trust Smart Cameras}},
  journal = {Computer},
  year = {2019},
  doi = {10.1109/MC.2019.2905171},
  volume = {52},
  number = {5},
  pages = {67--70},
  month = {5},
  }

• S. Shaikh and A. M. Tonello, “Comparison of Two Baseline AoA Estimation Methods in a EM Lens Assisted MAA System,” in 23rd International ITG Workshop on Smart Antennas 2019, 2019, p. 1–5.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f5f09dc0270,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{Comparison of Two Baseline AoA Estimation Methods in a EM Lens Assisted MAA System}},
  booktitle = {23rd International ITG Workshop on Smart Antennas 2019},
  year = {2019},
  pages = {1--5},
  month = {4},
  publisher = {VDA},
  url = {https://ieeexplore.ieee.org/document/8727228},
  }

• D. Inserra, A. M. Tonello, and G. Wen, “DoA Estimation in Multipath Channels for Packet Transmission Communication Systems,” in 23rd International ITG Workshop on Smart Antennas 2019, 2019, p. 1–5.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f62a0b40287,
  author = {Inserra, Daniele and Tonello, Andrea M. and Wen, Guangjun},
  title = {{DoA Estimation in Multipath Channels for Packet Transmission Communication Systems}},
  booktitle = {23rd International ITG Workshop on Smart Antennas 2019},
  year = {2019},
  pages = {1--5},
  month = {4},
  publisher = {VDA},
  url = {https://ieeexplore.ieee.org/document/8727197},
  }

• A. Pin, R. Rinaldo, A. M. Tonello, C. Marshall, M. Driusso, and A. Biason, “LTE Uplink TOA Opportunistic Measurement Based on DM-RS,” in 23rd International ITG Workshop on Smart Antennas 2019, 2019, p. 87–92.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f57be510222,
  author = {Pin, Alessandro and Rinaldo, Roberto and Tonello, Andrea M. and Marshall, Chris and Driusso, Marco and Biason, Alessandro},
  title = {{LTE Uplink TOA Opportunistic Measurement Based on DM-RS}},
  booktitle = {23rd International ITG Workshop on Smart Antennas 2019},
  year = {2019},
  pages = {87--92},
  month = {4},
  publisher = {VDA},
  url = {https://ieeexplore.ieee.org/document/8727199},
  }

• A. M. Tonello and F. Passerini, New Paradigms for Energy Grids Diagnostics and Maintenance, 2019.
  [BibTeX] [Abstract] [Download PDF]
  

  PLC is not a mere communication technology. The power grid is a fully interconnected system where all electrical phenomena affect the entire network. Moreover, it is influenced by external physical events. Hence, PLC nodes can be used to sense the grid itself as well as the surrounding environment. In other words, PLC transceivers can act as probes for grid diagnostics by analyzing the electromagnetic field and the data traffic in the PLC frequency bands. The results are significantly more accurate than those currently achieved by conventional sensors and measurement units, e.g. PMUs. Possible applications of PLC for sensing are fault detection, cable aging, load identification, grid topology reconstruction and derivation.

  @misc{0f4de0c68a4e8a36018a518161050261,
  abstract = {PLC is not a mere communication technology. The power grid is a fully interconnected system where all electrical phenomena affect the entire network. Moreover, it is influenced by external physical events. Hence, PLC nodes can be used to sense the grid itself as well as the surrounding environment. In other words, PLC transceivers can act as probes for grid diagnostics by analyzing the electromagnetic field and the data traffic in the PLC frequency bands. The results are significantly more accurate than those currently achieved by conventional sensors and measurement units, e.g. PMUs. Possible applications of PLC for sensing are fault detection, cable aging, load identification, grid topology reconstruction and derivation.},
  author = {Tonello, Andrea M. and Passerini, Federico},
  title = {New Paradigms for Energy Grids Diagnostics and Maintenance},
  howpublished = {Ton-, Bild- oder Datenträger},
  month = {4},
  year = {2019},
  url = {https://isplc2019.ieee-isplc.org/program/index.html},
  }

• F. Marcuzzi and A. M. Tonello, “Artificial-Intelligence-Based Performance Enhancement of the G3-PLC LOADng Routing Protocol for Sensor Networks,” in IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019), New York, 2019, p. 1–6. doi:10.1109/ISPLC.2019.8693390
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f6e74ce02ed,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{Artificial-Intelligence-Based Performance Enhancement of the G3-PLC LOADng Routing Protocol for Sensor Networks}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019)},
  year = {2019},
  doi = {10.1109/ISPLC.2019.8693390},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8693390},
  }

• D. Righini and A. M. Tonello, “Automatic Clustering of Noise in Multi-Conductor Narrow Band PLC Channels,” in IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019), New York, 2019, p. 1–6. doi:10.1109/ISPLC.2019.8693272
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f67ef4002bd,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{Automatic Clustering of Noise in Multi-Conductor Narrow Band PLC Channels}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019)},
  year = {2019},
  doi = {10.1109/ISPLC.2019.8693272},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8693272},
  }

• M. De Piante and A. M. Tonello, “Channel and Admittance Dependence Analysis in PLC with Implications to Power Loading/Savings,” in IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019), New York, 2019, p. 1–6. doi:10.1109/ISPLC.2019.8693391
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76c1e706c016c1f6b543902d5,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{Channel and Admittance Dependence Analysis in PLC with Implications to Power Loading/Savings}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2019 (ISPLC 2019)},
  year = {2019},
  doi = {10.1109/ISPLC.2019.8693391},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8693391},
  }

• U. Challita, W. Saad, and C. Bettstetter, “Interference Management for Cellular-Connected UAVs: A Deep Reinforcement Learning Approach,” IEEE Transactions on Wireless Communications, vol. 18, iss. 4, p. 2125–2140, 2019. doi:10.1109/TWC.2019.2900035
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, an interference-aware path planning scheme for a network of cellular-connected unmanned aerial vehicles (UAVs) is proposed. In particular, each UAV aims at achieving a tradeoff between maximizing energy efficiency and minimizing both wireless latency and the interference caused on the ground network along its path. The problem is cast as a dynamic game among UAVs. To solve this game, a deep reinforcement learning algorithm, based on echo state network (ESN) cells, is proposed. The introduced deep ESN architecture is trained to allow each UAV to map each observation of the network state to an action, with the goal of minimizing a sequence of time-dependent utility functions. Each UAV uses the ESN to learn its optimal path, transmission power, and cell association vector at different locations along its path. The proposed algorithm is shown to reach a subgame perfect Nash equilibrium upon convergence. Moreover, an upper bound and a lower bound for the altitude of the UAVs are derived thus reducing the computational complexity of the proposed algorithm. The simulation results show that the proposed scheme achieves better wireless latency per UAV and rate per ground user (UE) while requiring a number of steps that are comparable to a heuristic baseline that considers moving via the shortest distance toward the corresponding destinations. The results also show that the optimal altitude of the UAVs varies based on the ground network density and the UE data rate requirements and plays a vital role in minimizing the interference level on the ground UEs as well as the wireless transmission delay of the UAV.

  @article{0f4de0c76a8d9db9016aa04bc80506c5,
  author = {Challita, Ursula and Saad, Walid and Bettstetter, Christian},
  title = {{Interference Management for Cellular-Connected UAVs: A Deep Reinforcement Learning Approach}},
  journal = {IEEE Transactions on Wireless Communications},
  year = {2019},
  abstract = {In this paper, an interference-aware path planning scheme for a network of cellular-connected unmanned aerial vehicles (UAVs) is proposed. In particular, each UAV aims at achieving a tradeoff between maximizing energy efficiency and minimizing both wireless latency and the interference caused on the ground network along its path. The problem is cast as a dynamic game among UAVs. To solve this game, a deep reinforcement learning algorithm, based on echo state network (ESN) cells, is proposed. The introduced deep ESN architecture is trained to allow each UAV to map each observation of the network state to an action, with the goal of minimizing a sequence of time-dependent utility functions. Each UAV uses the ESN to learn its optimal path, transmission power, and cell association vector at different locations along its path. The proposed algorithm is shown to reach a subgame perfect Nash equilibrium upon convergence. Moreover, an upper bound and a lower bound for the altitude of the UAVs are derived thus reducing the computational complexity of the proposed algorithm. The simulation results show that the proposed scheme achieves better wireless latency per UAV and rate per ground user (UE) while requiring a number of steps that are comparable to a heuristic baseline that considers moving via the shortest distance toward the corresponding destinations. The results also show that the optimal altitude of the UAVs varies based on the ground network density and the UE data rate requirements and plays a vital role in minimizing the interference level on the ground UEs as well as the wireless transmission delay of the UAV.},
  doi = {10.1109/TWC.2019.2900035},
  volume = {18},
  number = {4},
  pages = {2125--2140},
  month = {4},
  url = {https://doi.org/10.1109/TWC.2019.2900035},
  }

• B. Salamat and A. M. Tonello, “Adaptive Nonlinear PID Control for a Quadrotor UAV Using Particle Swarm Optimization,” in IEEE Aerospace Conference 2019, Piscataway (NJ), 2019, p. 1–12. doi:10.1109/AERO.2019.8741829
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c968852cea016894c9eb461031,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Adaptive Nonlinear PID Control for a Quadrotor UAV Using Particle Swarm Optimization}},
  booktitle = {IEEE Aerospace Conference 2019},
  year = {2019},
  doi = {10.1109/AERO.2019.8741829},
  pages = {1--12},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8741829},
  }

• B. Salamat and A. M. Tonello, “A Generalized Multi-Objective Framework for UAV Mission Planning,” in IEEE Aerospace Conference 2019, Piscataway (NJ), 2019, p. 1–6. doi:10.1109/AERO.2019.8741898
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c968852cea016894c7ac50101e,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{A Generalized Multi-Objective Framework for UAV Mission Planning}},
  booktitle = {IEEE Aerospace Conference 2019},
  year = {2019},
  doi = {10.1109/AERO.2019.8741898},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8741898},
  }

• F. Passerini and A. M. Tonello, “Smart Grid Monitoring Using Power Line Modems: Effect of Anomalies on Signal Propagation,” IEEE Access, vol. 7, p. 27302–27312, 2019. doi:10.1109/ACCESS.2019.2901861
  [BibTeX] [Abstract] [Download PDF]
  

  The aim of this paper is to provide the theoretical fundamentals needed to monitor power grids using high-frequency sensors. In our context, network monitoring refers to the harvesting of different kinds of information: topology of the grid, load changes, presence of faults, and cable degradation. We rely on the transmission line theory to carry out a thorough analysis of how high-frequency signals, such those produced by power line communication modems, propagate through multi-conductor power networks. We also consider the presence of electrical anomalies on the network and analyze how they affect the signal propagation. In this context, we propose two models that rely on reflectometric and end-to-end measurements to extrapolate information about possible anomalies. An in-depth discussion is carried out to explain the properties of each model and measurement method, in order to enable the development of appropriate anomaly detection and location algorithms.

  @article{0f4de0c76c1e706c016c1f3611f70111,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Smart Grid Monitoring Using Power Line Modems: Effect of Anomalies on Signal Propagation}},
  journal = {IEEE Access},
  year = {2019},
  abstract = {The aim of this paper is to provide the theoretical fundamentals needed to monitor power grids using high-frequency sensors. In our context, network monitoring refers to the harvesting of different kinds of information: topology of the grid, load changes, presence of faults, and cable degradation. We rely on the transmission line theory to carry out a thorough analysis of how high-frequency signals, such those produced by power line communication modems, propagate through multi-conductor power networks. We also consider the presence of electrical anomalies on the network and analyze how they affect the signal propagation. In this context, we propose two models that rely on reflectometric and end-to-end measurements to extrapolate information about possible anomalies. An in-depth discussion is carried out to explain the properties of each model and measurement method, in order to enable the development of appropriate anomaly detection and location algorithms.},
  doi = {10.1109/ACCESS.2019.2901861},
  volume = {7},
  pages = {27302--27312},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/8653266},
  }

• F. Passerini and A. M. Tonello, “Analog Full-Duplex Amplify-and-Forward Relay for Power Line Communication Networks,” IEEE Communications Letters, vol. 23, iss. 4, p. 676–679, 2019. doi:10.1109/LCOMM.2019.2901480
  [BibTeX] [Abstract] [Download PDF]
  

  Signal relays in power line communication networks are usually implemented using the decode-and-forward protocol, which requires complex relays. In this letter, we propose a real-time amplify-and-forward relay that is mainly based on an analog full-duplex architecture. The speed of analog circuits enables the amplification of the incoming signal without introducing a significant communication delay. Our system-level analysis explains the optimization of the relay design and, based on a measured channel database, shows what increase in communication rate can be achieved by using the proposed solution.

  @article{0f4de0c76c1e706c016c1f3a145b012d,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Analog Full-Duplex Amplify-and-Forward Relay for Power Line Communication Networks}},
  journal = {IEEE Communications Letters},
  year = {2019},
  abstract = {Signal relays in power line communication networks are usually implemented using the decode-and-forward protocol, which requires complex relays. In this letter, we propose a real-time amplify-and-forward relay that is mainly based on an analog full-duplex architecture. The speed of analog circuits enables the amplification of the incoming signal without introducing a significant communication delay. Our system-level analysis explains the optimization of the relay design and, based on a measured channel database, shows what increase in communication rate can be achieved by using the proposed solution.},
  doi = {10.1109/LCOMM.2019.2901480},
  volume = {23},
  number = {4},
  pages = {676--679},
  month = {2},
  url = {https://ieeexplore.ieee.org/document/8651351},
  }

• M. Jdeed, A. Pitman, and W. Elmenreich, “Evolving Swarm Behavior for Simulated Spiderino Robots,” in The Eleventh International Conference on Adaptive and Self-Adaptive Systems and Applications, 2019, p. 21–26.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c76be4c81e016bf4fd46900176,
  author = {Jdeed, Midhat and Pitman, Arthur and Elmenreich, Wilfried},
  title = {{Evolving Swarm Behavior for Simulated Spiderino Robots}},
  booktitle = {The Eleventh International Conference on Adaptive and Self-Adaptive Systems and Applications},
  year = {2019},
  pages = {21--26},
  month = {2},
  publisher = {International Academy, Research, and Industry Association (IARIA)},
  url = {https://www.thinkmind.org/download.php?articleid=adaptive\_2019\_2\_20\_50028},
  }

• J. Simonjan and B. Rinner, “Decentralized and resource-efficient self-calibration of visual sensor networks,” Ad Hoc Networks, vol. 88, p. 112–128, 2019. doi:10.1016/j.adhoc.2019.01.007
  [BibTeX] [Abstract] [Download PDF]
  

  Many multi-camera applications rely on the knowledge of the spatial relationship among the individual nodes. However, establishing such a network-wide calibration is typically a time-consuming task and requires user interaction. In this paper we present a decentralized and resource-aware algorithm for estimating the poses of all network nodes without any user interaction. This self-calibration of the network is achieved in two steps: First, overlapping camera pairs estimate relative positions and orientations by exchanging locally measured distances and angles to detected objects. Second, calibration information of overlapping cameras is spread throughout the network such that poses of non-overlapping cameras can also be estimated. Our approach does not rely on a priori topological information and delivers the extrinsic camera parameters with respect to a common coordinate system. In a simulation study we analyze the performance of our approach concerning the achieved spatial accuracy and computational effort considering noisy measurements and different communication schemes.

  @article{0f4de0c66a2a67be016a4dfb7af9050b,
  author = {Simonjan, Jennifer and Rinner, Bernhard},
  title = {{Decentralized and resource-efficient self-calibration of visual sensor networks}},
  journal = {Ad Hoc Networks},
  year = {2019},
  abstract = {Many multi-camera applications rely on the knowledge of the spatial relationship among the individual nodes. However, establishing such a network-wide calibration is typically a time-consuming task and requires user interaction. In this paper we present a decentralized and resource-aware algorithm for estimating the poses of all network nodes without any user interaction. This self-calibration of the network is achieved in two steps: First, overlapping camera pairs estimate relative positions and orientations by exchanging locally measured distances and angles to detected objects. Second, calibration information of overlapping cameras is spread throughout the network such that poses of non-overlapping cameras can also be estimated. Our approach does not rely on a priori topological information and delivers the extrinsic camera parameters with respect to a common coordinate system. In a simulation study we analyze the performance of our approach concerning the achieved spatial accuracy and computational effort considering noisy measurements and different communication schemes.},
  doi = {10.1016/j.adhoc.2019.01.007},
  volume = {88},
  pages = {112--128},
  month = {2},
  url = {https://www.sciencedirect.com/science/article/pii/S1570870518301975?via\%3Dihub},
  }

• P. Grippa, D. Behrens, F. Wall, and C. Bettstetter, “Drone Delivery Systems: Job Assignment and Dimensioning,” Autonomous Robots, p. 1–14, 2019. doi:10.1007/s10514-018-9768-8
  [BibTeX] [Abstract] [Download PDF]
  

  This article studies how to dimension and control at the system level a fleet of autonomous aerial vehicles delivering goods from depots to customers. Customer requests (jobs) arrive according to a space-time stochastic process.We compute a lower bound for the infrastructure expenditure required to achieve a certain expected delivery time. It is shown that job assignment policies can exhibit a tipping point behavior: One vehicle makes the difference between almost optimal delivery time and instability. This phenomenon calls for careful dimensioning of the system.We thus demonstrate the trade-off between financial costs and service quality. We propose a policy that assigns each incoming job to the vehicle that will do the job faster than other ones, seeking to minimize the overall workload in the system in the long term. This policy is scalable with the number of depots and vehicles, performs optimal in low load, and works well up to high loads. Simulations suggest that it stabilizes the system for any load if the number of vehicles per depot is sufficient.

  @article{0f4de0c9663a9da901663e80ced300f7,
  author = {Grippa, Pasquale and Behrens, Doris and Wall, Friederike and Bettstetter, Christian},
  title = {{Drone Delivery Systems: Job Assignment and Dimensioning}},
  journal = {Autonomous Robots},
  year = {2019},
  abstract = {This article studies how to dimension and control at the system level a fleet of autonomous aerial vehicles delivering goods from depots to customers. Customer requests (jobs) arrive according to a space-time stochastic process.We compute a lower bound for the infrastructure expenditure required to achieve a certain expected delivery time. It is shown that job assignment policies can exhibit a tipping point behavior: One vehicle makes the difference between almost optimal delivery time and instability. This phenomenon calls for careful dimensioning of the system.We thus demonstrate the trade-off between financial costs and service quality. We propose a policy that assigns each incoming job to the vehicle that will do the job faster than other ones, seeking to minimize the overall workload in the system in the long term. This policy is scalable with the number of depots and vehicles, performs optimal in low load, and works well up to high loads. Simulations suggest that it stabilizes the system for any load if the number of vehicles per depot is sufficient.},
  doi = {10.1007/s10514-018-9768-8},
  pages = {1--14},
  month = {2},
  url = {http://dx.doi.org/10.1007/s10514-018-9768-8},
  }

• S. Shaikh and A. M. Tonello, “Radio Source Localization in Multipath Channels Using EM Lens AssistedMassive Antennas Arrays,” IEEE Access, vol. 7, iss. 1, p. 9001–9012, 2019. doi:10.1109/ACCESS.2019.2891110
  [BibTeX] [Abstract] [Download PDF]
  

  The focusing ability of the lens antennas can significantly contribute to perform precise radio localization with low complexity in a massive antennas array (MAA) system. Thus, by combining lens antennas with an MAA, we propose an approach for radio source localization through an angle of arrival (AoA) estimation in a multipath propagation scenario. We discuss two simplified antenna selection techniques to select and process the focused subsets of antennas. Then, we implement a low-complexity time of arrival estimation scheme to detect the first arrival path (FAP) that contains the actual AoA information. Finally, the FAP signal is processed to estimate the AoA very efficiently, by applying one of the traditional subspace-based methods. To further simplify the system architecture with only slight degradation in performance, we also propose a mixed analog–digital AoA estimation structure based on the application of the sum–difference signal patterns technique. The simulated root mean squared error performance curves as a function of the signal-to-noise-ratio demonstrate that the proposed approach is capable of providing good AoA estimation results while considerably reducing the overall system complexity compared with the MAA system without the lens.j

  @article{0f4de0c968852cea016894b777970f72,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{Radio Source Localization in Multipath Channels Using EM Lens AssistedMassive Antennas Arrays}},
  journal = {IEEE Access},
  year = {2019},
  abstract = {The focusing ability of the lens antennas can significantly contribute to perform precise radio localization with low complexity in a massive antennas array (MAA) system. Thus, by combining lens antennas with an MAA, we propose an approach for radio source localization through an angle of arrival (AoA) estimation in a multipath propagation scenario. We discuss two simplified antenna selection techniques to select and process the focused subsets of antennas. Then, we implement a low-complexity time of arrival estimation scheme to detect the first arrival path (FAP) that contains the actual AoA information. Finally, the FAP signal is processed to estimate the AoA very efficiently, by applying one of the traditional subspace-based methods. To further simplify the system architecture with only slight degradation in performance, we also propose a mixed analog–digital AoA estimation structure based on the application of the sum–difference signal patterns technique. The simulated root mean squared error performance curves as a function of the signal-to-noise-ratio demonstrate that the proposed approach is capable of providing good AoA estimation results while considerably reducing the overall system complexity compared with the MAA system without the lens.j},
  doi = {10.1109/ACCESS.2019.2891110},
  volume = {7},
  number = {1},
  pages = {9001--9012},
  month = {1},
  url = {https://ieeexplore.ieee.org/document/8603676},
  }

• O. Sarwar, B. Rinner, and A. Cavallaro, “A Privacy-Preserving Filter for Oblique Face Images Based on Adaptive Hopping Gaussian Mixtures,” IEEE Access, vol. 7, iss. 1, p. 142623–142639, 2019. doi:10.1109/ACCESS.2019.2944861
  [BibTeX] [Download PDF]

  @article{0f4de0c66db577c0016db932c7ce008a,
  author = {Sarwar, Omair and Rinner, Bernhard and Cavallaro, Andrea},
  title = {{A Privacy-Preserving Filter for Oblique Face Images Based on Adaptive Hopping Gaussian Mixtures}},
  journal = {IEEE Access},
  year = {2019},
  doi = {10.1109/ACCESS.2019.2944861},
  volume = {7},
  number = {1},
  pages = {142623--142639},
  url = {https://doi.org/10.1109/ACCESS.2019.2944861},
  }

• P. Mazdin and B. Rinner, “Coordination of Mobile Agents for Simultaneous Coverage,” in International Conference on Principles and Practice of Multi-Agent Systems, Berlin, 2019, p. 170–185. doi:10.1007/978-3-030-33792-6_11
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66fab2657016fad6a9f1e00d5,
  author = {Mazdin, Petra and Rinner, Bernhard},
  title = {{Coordination of Mobile Agents for Simultaneous Coverage}},
  booktitle = {International Conference on Principles and Practice of Multi-Agent Systems},
  year = {2019},
  doi = {10.1007/978-3-030-33792-6\_11},
  pages = {170--185},
  address = {Berlin},
  publisher = {Springer},
  url = {https://link.springer.com/chapter/10.1007/978-3-030-33792-6\_11},
  }

• D. Errath, S. Kletz, A. Leibetseder, P. Moll, J. Zraunig, and W. Elmenreich, “Digitalisierung und Anthropozän,” in Das Anthropozän., H. Egner and H. P. Groß, Eds., München, Wien: Profil Verlag, 2019, p. 133–176.
  [BibTeX] [Abstract]
  

  Das Anthropozän bezeichnet ein neues Erdzeitalter, in dem die Menschheit deutliche Spuren hinterlässt. Diese reichen von Gesteinsschichten mit radioaktiven Ablagerungen aus Atomtests über ausgerottete Tier- und Pflanzenarten bis hin zum allgegenwärtigen Klimawandel. Für manche dieser Spuren ist technologischer Fortschritt ein erheblicher Einflussfaktor. Während Mensch und Technik zusammen Spuren hinterlassen, beeinflusst auch die Technik den Menschen. Insbesondere die Digitalisierung könnte einen besonderen Einfluss auf das neue Erdzeitalter nehmen, in dem digitales Grundverständnis und Computational Thinking notwendige Kompetenzen auf dem Weg in die Zukunft darstellen. Wie diese aussieht, ist aufgrund der hohen Dynamik der gegenwärtigen Systeme ungewiss, insbesondere da durch die digitale Vernetzung eine hohe Produktivität einer großen Volatilität bei der Langzeitarchivierung gegenübersteht. In diesem Buchkapitel spannen wir einen Bogen vom Anthropozän über derzeitige Auswirkungen der menschlichen Intervention hin zur Entwicklung und Wirkung von Kommunikations- und Computertechnik in der heutigen Welt, zusammengefasst als digitale (R)evolution. In einem weiteren Schritt beschäftigen wir uns mit der gegenwärtig vorherrschenden und uns täglich umgebenden “digitalen Welt” und der Notwendigkeit zu digitalem Grundverständnis und Computational Thinking. Den Abschluss des Kapitels bildet ein Ausblick in die Zukunft und erläutert mögliche Zukunftsszenarien im digitalen Bereich.

  @incollection{0f4de0c76c43349d016c47fa4e81108c,
  author = {Errath, Daniela and Kletz, Sabrina and Leibetseder, Andreas and Moll, Philipp and Zraunig, Julia and Elmenreich, Wilfried},
  title = {{Digitalisierung und Anthropozän}},
  booktitle = {Das Anthropozän. },
  publisher = {Profil Verlag},
  year = {2019},
  abstract = {Das Anthropozän bezeichnet ein neues Erdzeitalter, in dem die Menschheit deutliche Spuren hinterlässt. Diese reichen von Gesteinsschichten mit radioaktiven Ablagerungen aus Atomtests über ausgerottete Tier- und Pflanzenarten bis hin zum allgegenwärtigen Klimawandel. Für manche dieser Spuren ist technologischer Fortschritt ein erheblicher Einflussfaktor. Während Mensch und Technik zusammen Spuren hinterlassen, beeinflusst auch die Technik den Menschen. Insbesondere die Digitalisierung könnte einen besonderen Einfluss auf das neue Erdzeitalter nehmen, in dem digitales Grundverständnis und Computational Thinking notwendige Kompetenzen auf dem Weg in die Zukunft darstellen. Wie diese aussieht, ist aufgrund der hohen Dynamik der gegenwärtigen Systeme ungewiss, insbesondere da durch die digitale Vernetzung eine hohe Produktivität einer großen Volatilität bei der Langzeitarchivierung gegenübersteht. In diesem Buchkapitel spannen wir einen Bogen vom Anthropozän über derzeitige Auswirkungen der menschlichen Intervention hin zur Entwicklung und Wirkung von Kommunikations- und Computertechnik in der heutigen Welt, zusammengefasst als digitale (R)evolution. In einem weiteren Schritt beschäftigen wir uns mit der gegenwärtig vorherrschenden und uns täglich umgebenden “digitalen Welt” und der Notwendigkeit zu digitalem Grundverständnis und Computational Thinking. Den Abschluss des Kapitels bildet ein Ausblick in die Zukunft und erläutert mögliche Zukunftsszenarien im digitalen Bereich.},
  editor = {Heike Egner and Horst Peter Groß},
  pages = {133--176},
  address = {München, Wien},
  isbn = {978-3-89019-722-7},
  }

• P. Mazdin and B. Rinner, “Efficient and QoS-aware Drone Coordination for Simultaneous Environment Coverage,” in Proceedings of the IEEE International Conference on Multimedia Information Processing and Retrieval (MIPR 2019), Piscataway (NJ), 2019, p. 333–338. doi:10.1109/MIPR.2019.00066
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66c1a9b90016c1d71766b0063,
  author = {Mazdin, Petra and Rinner, Bernhard},
  title = {{Efficient and QoS-aware Drone Coordination for Simultaneous Environment Coverage}},
  booktitle = { Proceedings of the IEEE International Conference on Multimedia Information Processing and Retrieval (MIPR 2019)},
  year = {2019},
  doi = {10.1109/MIPR.2019.00066},
  pages = {333--338},
  address = {Piscataway (NJ)},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8695397},
  }

• J. Simonjan, B. Dieber, and B. Rinner, “Resilient Self-Calibration in Distributed Visual Sensor Networks,” in Proceedings of the International Conference on Distributed Computing in Sensor Systems Workshops, Piscataway (NJ), 2019, p. 271–278. doi:10.1109/DCOSS.2019.00065
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66a07cb09016a1fa18b5b049d,
  author = {Simonjan, Jennifer and Dieber, Bernhard and Rinner, Bernhard},
  title = {{Resilient Self-Calibration in Distributed Visual Sensor Networks}},
  booktitle = {Proceedings of the International Conference on Distributed Computing in Sensor Systems Workshops},
  year = {2019},
  doi = {10.1109/DCOSS.2019.00065},
  pages = {271--278},
  address = {Piscataway (NJ)},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8804797},
  }

• C. Torkar, S. Yahyanejad, H. Pichler, M. Hofbaur, and B. Rinner, “RNN-based Human Pose Prediction for Human-Robot Interaction,” in Proceedings of the Austrian Robotics Workshop, Graz, 2019, p. 1–5. doi:10.3217/978-3-85125-663-5
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c66c1a9b90016c1d5720b30019,
  author = {Torkar, Chris and Yahyanejad, Saeed and Pichler, Horst and Hofbaur, Michael and Rinner, Bernhard},
  title = {{RNN-based Human Pose Prediction for Human-Robot Interaction}},
  booktitle = {Proceedings of the Austrian Robotics Workshop},
  year = {2019},
  editor = {Peter Roth and Andreas Pichler and Robert Sablatnig and Gernot Stübl and Markus Vincze},
  doi = {10.3217/978-3-85125-663-5},
  pages = {1--5},
  address = {Graz},
  publisher = {Verlag der Technischen Universität Graz},
  url = {https://www.tugraz-verlag.at/gesamtverzeichnis/informatik-und-biomedizinische-technik/proceedings-of-the-joint-arw-oagm-workshop-2019/},
  }

• S. Ullah, L. Marcenaro, and B. Rinner, “Secure Smart Cameras by Aggregate-Signcryption with Decryption Fairness for Multi-Receiver IoT Applications,” Sensors, vol. 19, p. 1–22, 2019.
  [BibTeX] [Abstract] [Download PDF]
  

  Smart cameras are key sensors in Internet of Things (IoT) applications and often capturehighly sensitive information. Therefore, security and privacy protection is a key concern. This paperintroduces a lightweight security approach for smart camera IoT applications based on elliptic-curve(EC) signcryption that performs data signing and encryption in a single step. We deploy signcryptionto efficiently protect sensitive data onboard the cameras and secure the data transfer from multiplecameras to multiple monitoring devices. Our multi-sender/multi-receiver approach providesintegrity, authenticity, and confidentiality of data with decryption fairness for multiple receiversthroughout the entire lifetime of the data. It further provides public verifiability and forward secrecyof data. Our certificateless multi-receiver aggregate-signcryption protection has been implementedfor a smart camera IoT scenario, and the runtime and communication effort has been compared withsingle-sender/single-receiver and multi-sender/single-receiver setups.

  @article{0f4de0c9685622d9016857e3ba730570,
  author = {Ullah, Subhan and Marcenaro, Lucio and Rinner, Bernhard},
  title = {{Secure Smart Cameras by Aggregate-Signcryption with Decryption Fairness for Multi-Receiver IoT Applications}},
  journal = {Sensors},
  year = {2019},
  abstract = {Smart cameras are key sensors in Internet of Things (IoT) applications and often capturehighly sensitive information. Therefore, security and privacy protection is a key concern. This paperintroduces a lightweight security approach for smart camera IoT applications based on elliptic-curve(EC) signcryption that performs data signing and encryption in a single step. We deploy signcryptionto efficiently protect sensitive data onboard the cameras and secure the data transfer from multiplecameras to multiple monitoring devices. Our multi-sender/multi-receiver approach providesintegrity, authenticity, and confidentiality of data with decryption fairness for multiple receiversthroughout the entire lifetime of the data. It further provides public verifiability and forward secrecyof data. Our certificateless multi-receiver aggregate-signcryption protection has been implementedfor a smart camera IoT scenario, and the runtime and communication effort has been compared withsingle-sender/single-receiver and multi-sender/single-receiver setups.},
  volume = {19},
  pages = {1--22},
  url = {https://www.mdpi.com/1424-8220/19/2/327},
  }

• S. Perez-Carabaza, J. Scherer, B. Rinner, J. A. Lopez-Orozco, and E. Besada-Potas, “UAV trajectory optimization for Minimum Time Search with communication constraints and collision avoidance,” Engineering Applications of Artificial Intelligence, vol. 85, p. 357–371, 2019. doi:10.1016/j.engappai.2019.06.002
  [BibTeX] [Download PDF]

  @article{0f4de0c76bad932a016bc18a3a860633,
  author = {Perez-Carabaza, Sara and Scherer, Jürgen and Rinner, Bernhard and Lopez-Orozco, Jose A. and Besada-Potas, Eva},
  title = {{UAV trajectory optimization for Minimum Time Search with communication constraints and collision avoidance}},
  journal = {Engineering Applications of Artificial Intelligence},
  year = {2019},
  doi = {10.1016/j.engappai.2019.06.002},
  volume = {85},
  pages = {357--371},
  url = {https://doi.org/10.1016/j.engappai.2019.06.002},
  }

2018

• P. Grippa, E. Yanmaz, P. Ladinig, and C. Bettstetter, “Guarded by Gamora: How Access Control Balances Out Waiting Times in Transport Systems,” in 2018 21st International Conference on Intelligent Transportation Systems (ITSC), Piscataway (NJ), 2018. doi:10.1109/ITSC.2018.8569305
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c7682d218501682df4e13a0203,
  author = {Grippa, Pasquale and Yanmaz, Evsen and Ladinig, Paul and Bettstetter, Christian},
  title = {{Guarded by Gamora: How Access Control Balances Out Waiting Times in Transport Systems}},
  booktitle = { 2018 21st International Conference on Intelligent Transportation Systems (ITSC)},
  year = {2018},
  editor = {Pasquale Grippa and Evsen Yanmaz and Paul Ladinig and Christian Bettstetter},
  doi = {10.1109/ITSC.2018.8569305},
  address = {Piscataway (NJ)},
  month = {12},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8569305},
  }

• D. Borovina, M. Zajc, A. Mujcic, A. M. Tonello, and N. Suljanovic, “Error Performance Analysis of Narrow-Band PLC Technology Enabling Smart Metering Systems,” in 2018 Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion, 2018, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c7685ca0f301686196ec8405cc,
  author = {Borovina, Dzemo and Zajc, Matej and Mujcic, Aljo and Tonello, Andrea M. and Suljanovic, Nermin},
  title = {{Error Performance Analysis of Narrow-Band PLC Technology Enabling Smart Metering Systems}},
  booktitle = {2018 Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion},
  year = {2018},
  pages = {1--6},
  month = {11},
  url = {http://medpower2018.com/},
  }

• C. Klemenjak, S. Jost, and W. Elmenreich, “YoMoPie: A User-Oriented Energy Monitor to Enhance Energy Efficiency in Households,” in 2018 IEEE Conference on Technologies for Sustainability (SusTech), Piscataway (NJ): IEEE, 2018, p. 1–7. doi:10.1109/SusTech.2018.8671331
  [BibTeX] [Abstract] [Download PDF]
  

  Computational methods for the enhancement of energy efficiency rely on a measurement process with sufficient accuracy and number of measurements. Networked energy meters, energy monitors, serve as vital link between energy consumption of households and key insights that reveal strategies to achieve significant energy savings. During the design of such an energy monitor, several aspects such as data update rate or variety of measured physical quantities have to be considered. This paper introduces YoMoPie, a user-oriented energy monitor based on the Raspberry Pi platform that aims to enable intelligent energy services in households. YoMoPie measures active as well as apparent power, stores data locally, and integrates an easy to use Python library. Furthermore, the presented energy monitor comes with a Python API enabling the execution of user-designed services to enhance energy efficiency in buildings and households. Along with the presented design, possible applications that could run on top of this system such as residential demand response, immediate user feedback, smart meter data analytics, or energy disaggregation are discussed. Finally, a case study is presented, which compares the measurement accuracy of YoMoPie to a certified energy analyser for a selection of common household appliances.

  @incollection{0f4de0c9673a6a7e01673b78d10500cc,
  author = {Klemenjak, Christoph and Jost, Stefan and Elmenreich, Wilfried},
  title = {{YoMoPie: A User-Oriented Energy Monitor to Enhance Energy Efficiency in Households}},
  booktitle = {2018 IEEE Conference on Technologies for Sustainability (SusTech)},
  publisher = {IEEE},
  year = {2018},
  abstract = {Computational methods for the enhancement of energy efficiency rely on a measurement process with sufficient accuracy and number of measurements. Networked energy meters, energy monitors, serve as vital link between energy consumption of households and key insights that reveal strategies to achieve significant energy savings. During the design of such an energy monitor, several aspects such as data update rate or variety of measured physical quantities have to be considered. This paper introduces YoMoPie, a user-oriented energy monitor based on the Raspberry Pi platform that aims to enable intelligent energy services in households. YoMoPie measures active as well as apparent power, stores data locally, and integrates an easy to use Python library. Furthermore, the presented energy monitor comes with a Python API enabling the execution of user-designed services to enhance energy efficiency in buildings and households. Along with the presented design, possible applications that could run on top of this system such as residential demand response, immediate user feedback, smart meter data analytics, or energy disaggregation are discussed. Finally, a case study is presented, which compares the measurement accuracy of YoMoPie to a certified energy analyser for a selection of common household appliances.},
  doi = {10.1109/SusTech.2018.8671331},
  pages = {1--7},
  address = {Piscataway (NJ)},
  month = {11},
  url = {http://mobile.nes.aau.at/publications/klemenjak-2018-yomopie.pdf},
  }

• E. Sharma, “Energy forecasting based on predictive data mining techniques in smart energy grids,” Energy Informatics, vol. 1, iss. 44, p. 367–428, 2018. doi:10.1186/s42162-018-0048-9
  [BibTeX] [Download PDF]

  @article{0f4de0c767a72fa30167a78fdf850064,
  author = {Sharma, Ekanki},
  title = {{Energy forecasting based on predictive data mining techniques in smart energy grids}},
  journal = {Energy Informatics},
  year = {2018},
  doi = {10.1186/s42162-018-0048-9},
  volume = {1},
  number = {44},
  pages = {367--428},
  month = {10},
  url = {https://energyinformatics.springeropen.com/track/pdf/10.1186/s42162-018-0048-9},
  }

• O. Sarwar, A. Cavallaro, and B. Rinner, “Temporally smooth privacy-protected airborne videos,” in Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Piscataway (NJ), 2018, p. 1–6. doi:10.1109/IROS.2018.8594493
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c764d705b60164eab0f56c0208,
  author = {Sarwar, Omair and Cavallaro, Andrea and Rinner, Bernhard},
  title = {{Temporally smooth privacy-protected airborne videos}},
  booktitle = {Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
  year = {2018},
  doi = {10.1109/IROS.2018.8594493},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {10},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8594493},
  }

• F. Passerini and A. M. Tonello, Exploitation of the PLC channel properties to enable secure communications, 2018.
  [BibTeX] [Download PDF]

  @misc{0f4de0c767cc4a4001681321ea081b36,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {Exploitation of the PLC channel properties to enable secure communications},
  howpublished = {Online},
  month = {9},
  year = {2018},
  url = {http://wsplc2018.fe.uni-lj.si/index.php/programme/},
  }

• D. Righini and A. M. Tonello, New Findings about Multi Conductor Noise in Narrow Band PLC, 2018.
  [BibTeX] [Abstract] [Download PDF]
  

  The market projection for Internet of Things (IoT) systems is appealing for the Power Line Communication (PLC) technology. A massive growth and a pervasive presence of these IoT objects is expected in our everyday life. About 20 billion of IoT devices are forecasted to be installed in the next two years. PLC is a compelling technology that could become essential for certain IoT applications. For example, sensor nodes and actuators used in the Smart Buildings domain can be connected through PLC. In this case, the PLC network will work as a backbone for the in-building communication. PLC systems, in this domain, will help to solve or reduce the overcrowded-spectrum problem, exploiting the existing cable infrastructure. Narrow band (NB) PLC is probably the most suitable type of PLC technology for IoT applications. The main reasons are: simple hardware, good coverage, appropriate bit-rate and low cost. Nevertheless, to guarantee reliable connectivity further analysis and improvements should be done. There are such as signal propagation discontinuities, high channel attenuation and noise. Despite the fact that PLC noise is a well-known problem, it still poses several challenges for this technology. This paper aims at adding some new consideration on this topic. This paper describes new results on MC NB noise. The MC noise is measured between the Live-Protective Earth (L-PE) and between Neutral-Protective Earth (N-PE) pairs (L-PE-N configuration), to exploit the symmetries of the channel. The analysis in this paper considers the whole PLC NB frequency spectrum that ranges from 3 kHz to 500 kHz. It considers the noise observed at the two output ports of a given outlet in an in-building network with three conductors.

  @misc{0f4de0c767cc4a4001680daf25c31678,
  abstract = {The market projection for Internet of Things (IoT) systems is appealing for the Power Line Communication (PLC) technology. A massive growth and a pervasive presence of these IoT objects is expected in our everyday life. About 20 billion of IoT devices are forecasted to be installed in the next two years. PLC is a compelling technology that could become essential for certain IoT applications. For example, sensor nodes and actuators used in the Smart Buildings domain can be connected through PLC. In this case, the PLC network will work as a backbone for the in-building communication. PLC systems, in this domain, will help to solve or reduce the overcrowded-spectrum problem, exploiting the existing cable infrastructure. Narrow band (NB) PLC is probably the most suitable type of PLC technology for IoT applications. The main reasons are: simple hardware, good coverage, appropriate bit-rate and low cost. Nevertheless, to guarantee reliable connectivity further analysis and improvements should be done. There are such as signal propagation discontinuities, high channel attenuation and noise. Despite the fact that PLC noise is a well-known problem, it still poses several challenges for this technology. This paper aims at adding some new consideration on this topic. This paper describes new results on MC NB noise. The MC noise is measured between the Live-Protective Earth (L-PE) and between Neutral-Protective Earth (N-PE) pairs (L-PE-N configuration), to exploit the symmetries of the channel. The analysis in this paper considers the whole PLC NB frequency spectrum that ranges from 3 kHz to 500 kHz. It considers the noise observed at the two output ports of a given outlet in an in-building network with three conductors.},
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {New Findings about Multi Conductor Noise in Narrow Band PLC},
  howpublished = {Online},
  month = {9},
  year = {2018},
  url = {https://arxiv.org/abs/1812.03102},
  }

• F. Marcuzzi and A. M. Tonello, Synthetic Training of a Machine Learning Approach for Routing in PLC Networks, 2018.
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents an AI-inspired approach to analyze the performance of a PLC network based on its topology and geometrical parameters. Transmission Line Theory allows the performance analysis of cabled links based on their physical properties. In this case it is used as a basis to synthetically train an AI to infer a link's capacity based on geometrical properties of the network, such as number of nodes, average distance between nodes, standard deviation of the distances and actual distance between a communicating pair. Eventually, the inferred capacity is used to optimize the polling procedure in an Automatic Meter Reading application by using the AI to choose which nodes should act as repeaters.

  @misc{0f4de0c767cc4a400168130a40991ac0,
  abstract = {This paper presents an AI-inspired approach to analyze the performance of a PLC network based on its topology and geometrical parameters. Transmission Line Theory allows the performance analysis of cabled links based on their physical properties. In this case it is used as a basis to synthetically train an AI to infer a link\'s capacity based on geometrical properties of the network, such as number of nodes, average distance between nodes, standard deviation of the distances and actual distance between a communicating pair. Eventually, the inferred capacity is used to optimize the polling procedure in an Automatic Meter Reading application by using the AI to choose which nodes should act as repeaters.},
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {Synthetic Training of a Machine Learning Approach for Routing in PLC Networks},
  howpublished = {Online},
  month = {9},
  year = {2018},
  url = {http://wsplc2018.fe.uni-lj.si/index.php/programme/},
  }

• F. Marcuzzi and A. M. Tonello, Radio Access Network Backhauling using Power Line Communications, Intech, 2018. doi:10.5772/intechopen.7339
  [BibTeX] [Abstract] [Download PDF]
  

  Nowadays, radio access networks (RANs) are moving toward a small cell-based paradigm,where the macro-cell antennas are aided by additional ones with lower coverage capabilities. This paradigm shift brings a new problem into the equation: a backhaul link is neededto carry the traffic from the small cell base stations to the network gateway. Currently, bothwired and wireless solutions exist, but none is universally considered optimal. Power linecommunications (PLC) can be considered as a broadband access solution for this backhaulbranch. Recent developments helped to push PLC performances to a point where stateof-the-art solutions can achieve very high-speed data transfers. Aided by traffic generationbased simulations, we will show how the PLC technology can be assessed for the describedapplication. The reader will be guided through the process by discussing small cell networks, the power line infrastructure and basics of traffic generation modeling. The chapterwill then discuss a quality-of-service (QoS)-driven analysis and use numerical results toshow how requirements can be defined for the backhauling technology. Overall, this chapterwill address how PLC and small cell network technologies can be brought together in aunified model to foster future small cell technology

  @book{0f4de0c9636952fa016369a20afc006e,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{Radio Access Network Backhauling using Power Line Communications}},
  publisher = {Intech},
  year = {2018},
  abstract = {Nowadays, radio access networks (RANs) are moving toward a small cell-based paradigm,where the macro-cell antennas are aided by additional ones with lower coverage capabilities. This paradigm shift brings a new problem into the equation: a backhaul link is neededto carry the traffic from the small cell base stations to the network gateway. Currently, bothwired and wireless solutions exist, but none is universally considered optimal. Power linecommunications (PLC) can be considered as a broadband access solution for this backhaulbranch. Recent developments helped to push PLC performances to a point where stateof-the-art solutions can achieve very high-speed data transfers. Aided by traffic generationbased simulations, we will show how the PLC technology can be assessed for the describedapplication. The reader will be guided through the process by discussing small cell networks, the power line infrastructure and basics of traffic generation modeling. The chapterwill then discuss a quality-of-service (QoS)-driven analysis and use numerical results toshow how requirements can be defined for the backhauling technology. Overall, this chapterwill address how PLC and small cell network technologies can be brought together in aunified model to foster future small cell technology},
  doi = {10.5772/intechopen.7339},
  month = {9},
  isbn = {978-1-78923-743-6},
  url = {https://www.intechopen.com/books/broadband-communications-networks-recent-advances-and-lessons-from-practice/radio-access-network-backhauling-using-power-line-communications},
  }

• J. Simonjan, J. M. Jornet, I. F. Akyildiz, and B. Rinner, “Nano-Cameras: A Key Enabling Technology for the Internet of Multimedia Nano-Things,” in Proceedings of the 5th ACM International Conference on Nanoscale Computing and Communication, New York, NY: ACM Digital Library, 2018. doi:10.1145/3233188.3233209
  [BibTeX] [Abstract] [Download PDF]
  

  Nanotechnology is enabling the development of a new generation of devices which are able to sense, process and communicate, while being in the scale of tens to hundreds of cubic nanometers. Such small, imperceptible devices enhance not only current applications but enable entirely new paradigms. This paper introduces the concept of nano-cameras, which are built upon nanoscale photodetectors, lenses and electronic circuitry. The state-of-the-art in nanoscale photodetectors and lenses is presented and the expected performance of nano-cameras is numerically evaluated through simulation studies. Finally, the open challenges towards integrating nano-cameras in practical applications and ultimately building the Internet of Multimedia Nano-Things are discussed.

  @incollection{0f4de0c7648f347d0164a1cee8a601c7,
  author = {Simonjan, Jennifer and Jornet, Josep Miquel and Akyildiz, Ian F. and Rinner, Bernhard},
  title = {{Nano-Cameras: A Key Enabling Technology for the Internet of Multimedia Nano-Things}},
  booktitle = {Proceedings of the 5th ACM International Conference on Nanoscale Computing and Communication},
  publisher = {ACM Digital Library},
  year = {2018},
  abstract = {Nanotechnology is enabling the development of a new generation of devices which are able to sense, process and communicate, while being in the scale of tens to hundreds of cubic nanometers. Such small, imperceptible devices enhance not only current applications but enable entirely new paradigms. This paper introduces the concept of nano-cameras, which are built upon nanoscale photodetectors, lenses and electronic circuitry. The state-of-the-art in nanoscale photodetectors and lenses is presented and the expected performance of nano-cameras is numerically evaluated through simulation studies. Finally, the open challenges towards integrating nano-cameras in practical applications and ultimately building the Internet of Multimedia Nano-Things are discussed.},
  doi = {10.1145/3233188.3233209},
  address = {New York, NY},
  month = {9},
  url = {https://dl.acm.org/citation.cfm?id=3233209},
  }

• U. Challita, W. Saad, and C. Bettstetter, “Deep Reinforcement Learning for Interference-Aware Path Planning of Cellular-Connected UAVs,” in Proceedings 2018 IEEE International Conference on Communications (ICC), Piscataway (NJ), 2018. doi:10.1109/ICC.2018.8422706
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c9682d21e3016831be57190065,
  author = {Challita, Ursula and Saad, Walid and Bettstetter, Christian},
  title = {{Deep Reinforcement Learning for Interference-Aware Path Planning of Cellular-Connected UAVs}},
  booktitle = {Proceedings 2018 IEEE International Conference on Communications (ICC)},
  year = {2018},
  doi = {10.1109/ICC.2018.8422706},
  address = {Piscataway (NJ)},
  month = {7},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8422706},
  }

• S. R. P. Chitturi, E. Sharma, and W. Elmenreich, “Efficiency of Photovoltaic Systems in Mountainous Areas,” in 2018 IEEE International Energy Conference (ENERGYCON), Piscataway (NJ): IEEE, 2018. doi:10.1109/ENERGYCON.2018.8398766
  [BibTeX] [Download PDF]

  @incollection{0f4de0c765f11a730165f21af0d8002b,
  author = {Chitturi, Sri Rama Phanindra and Sharma, Ekanki and Elmenreich, Wilfried},
  title = {{Efficiency of Photovoltaic Systems in Mountainous Areas}},
  booktitle = {2018 IEEE International Energy Conference (ENERGYCON)},
  publisher = {IEEE},
  year = {2018},
  doi = {10.1109/ENERGYCON.2018.8398766},
  address = {Piscataway (NJ)},
  month = {6},
  isbn = {978-1-5386-3669-5},
  url = {https://arxiv.org/pdf/1810.06692.pdf},
  }

• M. Jdeed, E. Sharma, C. Klemenjak, and W. Elmenreich, “Smart Grid Modeling and Simulation – Comparing GridLAB-D and RAPSim via two Case Studies,” in 2018 IEEE International Energy Conference (ENERGYCON), Piscataway (NJ): IEEE, 2018. doi:10.1109/ENERGYCON.2018.8398768
  [BibTeX] [Abstract] [Download PDF]
  

  One of the most important tools for the development of the smart grid is simulation. Therefore, analyzing, designing, modeling, and simulating the smart grid will allow to explore future scenarios and support decision making for the grid's development. In this paper, we compare two open source simulation tools for the smart grid, GridLAB-Distribution (GridLAB-D) and Renewable Alternative Power systems Simulation (RAPSim). The comparison is based on the implementation of two case studies related to a power flow problem and the integration of renewable energy resources to the grid. Results show that even for very simple case studies, specific properties such as weather simulation or load modeling are influencing the results in a way that they are not reproducible with a different simulator.

  @incollection{0f4de0c765f11a7301660ad61d820378,
  author = {Jdeed, Midhat and Sharma, Ekanki and Klemenjak, Christoph and Elmenreich, Wilfried},
  title = {{Smart Grid Modeling and Simulation - Comparing GridLAB-D and RAPSim via two Case Studies}},
  booktitle = {2018 IEEE International Energy Conference (ENERGYCON)},
  publisher = {IEEE},
  year = {2018},
  abstract = {One of the most important tools for the development of the smart grid is simulation. Therefore, analyzing, designing, modeling, and simulating the smart grid will allow to explore future scenarios and support decision making for the grid\'s development. In this paper, we compare two open source simulation tools for the smart grid, GridLAB-Distribution (GridLAB-D) and Renewable Alternative Power systems Simulation (RAPSim). The comparison is based on the implementation of two case studies related to a power flow problem and the integration of renewable energy resources to the grid. Results show that even for very simple case studies, specific properties such as weather simulation or load modeling are influencing the results in a way that they are not reproducible with a different simulator.},
  doi = {10.1109/ENERGYCON.2018.8398768},
  address = {Piscataway (NJ)},
  month = {6},
  isbn = {978-1-5386-3669-5},
  url = {https://arxiv.org/pdf/1809.08309.pdf},
  }

• S. Einspieler, B. Steinwender, and W. Elmenreich, “Integrating time-triggered and event-triggered traffic in a hard real-time system,” in Proceedings of the IEEE Industrial Cyber-Physical Systems (ICPS), , 2018, p. 122–128. doi:10.1109/ICPHYS.2018.8387647
  [BibTeX] [Download PDF]

  @incollection{0f4de0c765f11a730165f1e5b607000b,
  author = {Einspieler, Sascha and Steinwender, Benjamin and Elmenreich, Wilfried},
  title = {{Integrating time-triggered and event-triggered traffic in a hard real-time system}},
  booktitle = {Proceedings of the IEEE Industrial Cyber-Physical Systems (ICPS)},
  year = {2018},
  doi = {10.1109/ICPHYS.2018.8387647},
  pages = {122--128},
  month = {6},
  isbn = {978-1-5386-6531-2},
  url = {http://mobile.aau.at/publications/einspieler-2018-ICPS18\_IntegratingTTandET.pdf},
  }

• J. F. Schmidt, D. Neuhold, J. Klaue, D. Schupke, and C. Bettstetter, “Experimental Study of UWB Connectivity in Industrial Environments,” in Proceedings European Wireless 2018, Frankfurt am Main, 2018.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c9682d21e3016831ea062501c0,
  author = {Schmidt, Jorge Friedrich and Neuhold, Daniel and Klaue, Jirka and Schupke, Dominic and Bettstetter, Christian},
  title = {{Experimental Study of UWB Connectivity in Industrial Environments}},
  booktitle = {Proceedings European Wireless 2018},
  year = {2018},
  address = {Frankfurt am Main},
  month = {6},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  url = {https://ieeexplore.ieee.org/document/8385525},
  }

• M. You, J. Jiang, A. M. Tonello, T. Doukoglou, and H. Sun, “On Statistical Power Grid Observability under Communication Constraints,” IET Smart Grid, p. 1–8, 2018. doi:10.1049/iet-stg.2018.0009
  [BibTeX] [Abstract] [Download PDF]
  

  Phasor Measurement Units (PMUs) have enabled real-time power grid monitoring and control applications realizing an integrated power grid and communication system. The communication network formed by PMUs has strict latency requirements. If PMU measurements cannot reach the control centre within the latency bound, they will be invalid for calculation and may compromise the observability of the whole power grid as well as related applications. To address this issue, this study proposes a model to account for the power grid observability under communication constraints, where effective capacity is adopted to perform a cross-layer statistical analysis in the communication system. Based on this model, three algorithms are proposed for improving power grid observability, which are an observability redundancy algorithm, an observability sensitivity algorithm and an observability probability algorithm. These three algorithms aim at enhancing the power system observability via the optimal communication resource allocation for a given grid infrastructure. Case studies show that the proposed algorithms can improve the power system performance under constrained wireless communication resources.

  @article{0f4de0c9636952fa0163698c399f0007,
  author = {You, Minglei and Jiang, Jing and Tonello, Andrea M. and Doukoglou, Tilemachos and Sun, Hongjian},
  title = {{On Statistical Power Grid Observability under Communication Constraints}},
  journal = {IET Smart Grid},
  year = {2018},
  abstract = {Phasor Measurement Units (PMUs) have enabled real-time power grid monitoring and control applications realizing an integrated power grid and communication system. The communication network formed by PMUs has strict latency requirements. If PMU measurements cannot reach the control centre within the latency bound, they will be invalid for calculation and may compromise the observability of the whole power grid as well as related applications. To address this issue, this study proposes a model to account for the power grid observability under communication constraints, where effective capacity is adopted to perform a cross-layer statistical analysis in the communication system. Based on this model, three algorithms are proposed for improving power grid observability, which are an observability redundancy algorithm, an observability sensitivity algorithm and an observability probability algorithm. These three algorithms aim at enhancing the power system observability via the optimal communication resource allocation for a given grid infrastructure. Case studies show that the proposed algorithms can improve the power system performance under constrained wireless communication resources.},
  doi = {10.1049/iet-stg.2018.0009},
  pages = {1--8},
  month = {6},
  url = {http://digital-library.theiet.org/content/journals/10.1049/iet-stg.2018.0009;jsessionid=f4bo6640lgk0p.x-iet-live-01},
  }

• M. Arif Mughal, X. Luo, A. Ullah, S. Ullah, and Z. Mahmood, “A Lightweight Digital Signature Based Security Scheme for Human-Centered Internet of Things,” IEEE Access, iss. 6, p. 31630–31643, 2018. doi:10.1109/ACCESS.2018.2844406
  [BibTeX] [Abstract] [Download PDF]
  

  Internet of Things (IoT) comprises of large number of smart devices that can exchange sensed data by availing online services. Smart devices can directly interact with the human beings for sensing the healthcare parameters and transmitting to a central repository. During the data exchange, it is mandatory to secure the messages between sender and receiver to handle the malicious human based attacks. For providing secure communication, a number ofsignature-based schemes are explored in literature but smart devices need more lightweight operations by ensuring desired security strengths. The main problem during signature based approaches is the computational overhead due to large real numbers required for signature and verification processes. This paper presents a light weight shortened complex digital signature algorithm for providing secure communication between smart devices in human centeredIoT. We have used less extensive operations to achieve signature and verification processes like human beings do signatures on legal documents and verify later as per witness. We have also presented a multi-option parameter selection to use a signature-verification pair of expressions at particular index by adopting the common practice of human beings for using different signatures as per document criticality level. It enhances the security strength to guard against traffic analysis attacks. We have developed an experimental setup where a number of cell phones and smart devices are considered for secure communication using existing and proposed digital signature schemes. Results demonstrate the supremacy of our scheme as compared to preliminaries.

  @article{0f4de0c968dd57c90168e137f5c2007e,
  author = {Arif Mughal, Muhammad and Luo, Xiong and Ullah, Ata and Ullah, Subhan and Mahmood, Zahid},
  title = {{A Lightweight Digital Signature Based Security Scheme for Human-Centered Internet of Things}},
  journal = {IEEE Access},
  year = {2018},
  abstract = {Internet of Things (IoT) comprises of large number of smart devices that can exchange sensed data by availing online services. Smart devices can directly interact with the human beings for sensing the healthcare parameters and transmitting to a central repository. During the data exchange, it is mandatory to secure the messages between sender and receiver to handle the malicious human based attacks. For providing secure communication, a number ofsignature-based schemes are explored in literature but smart devices need more lightweight operations by ensuring desired security strengths. The main problem during signature based approaches is the computational overhead due to large real numbers required for signature and verification processes. This paper presents a light weight shortened complex digital signature algorithm for providing secure communication between smart devices in human centeredIoT. We have used less extensive operations to achieve signature and verification processes like human beings do signatures on legal documents and verify later as per witness. We have also presented a multi-option parameter selection to use a signature-verification pair of expressions at particular index by adopting the common practice of human beings for using different signatures as per document criticality level. It enhances the security strength to guard against traffic analysis attacks. We have developed an experimental setup where a number of cell phones and smart devices are considered for secure communication using existing and proposed digital signature schemes. Results demonstrate the supremacy of our scheme as compared to preliminaries.},
  doi = {10.1109/ACCESS.2018.2844406},
  number = {6},
  pages = {31630--31643},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/8374035},
  }

• S. Ullah, F. Russo, L. Marcenaro, and B. Rinner, “Aggregate-Signcryption for Securing Smart Camera IoT Applications,” in Proceedings of the Global IoT Summit, , 2018, p. 1–6. doi:10.1109/GIOTS.2018.8534434
  [BibTeX] [Download PDF]

  @incollection{0f4de0c763f7f7ef0163fd52757801e5,
  author = {Ullah, Subhan and Russo, Federico and Marcenaro, Lucio and Rinner, Bernhard},
  title = {{Aggregate-Signcryption for Securing Smart Camera IoT Applications}},
  booktitle = {Proceedings of the Global IoT Summit},
  year = {2018},
  doi = {10.1109/GIOTS.2018.8534434},
  pages = {1--6},
  month = {6},
  url = {https://ieeexplore.ieee.org/document/8534434},
  }

• K. Rabbie, B. Adebisi, A. M. Tonello, and G. Nauryzbayev, “For More Energy Efficient Dual-hop DF Cooperative Relaying PLC Systems,” IEEE Systems Journal, vol. 12, iss. 2, p. 2005–2016, 2018. doi:10.1109/JSYST.2016.2639321
  [BibTeX] [Abstract] [Download PDF]
  

  Energy efficiency in multihop cooperative power-line communication (PLC) systems has recently received considerable attention in the literature. In order to make such systems more energy efficient, this paper proposes a relaying technique equipped with energy-harvesting capabilities. More specifically, we consider a dual-hop decode-and-forward (DF) broadband PLC relaying system in which the relay exploits the high noise inherent in PLC channels to further enhance energy efficiency; this system will be referred to as DF with energy harvesting (DF-EH). This study deploys, particularly, the time-switching relaying protocol for energy harvesting. An accurate analytical expression for the energy efficiency and a closed-form expression for the average outage probability of the proposed system are derived and then verified with Monte Carlo simulations. For the sake of comparison and to highlight the achievable gains, we also analyze the energy-efficiency performances and the average outage probabilities of the conventional DF relaying system, i.e., without energy harvesting, as well as that of the direct-link approach. Furthermore, various frequency selection and power allocation strategies, namely, optimal frequency selection, random frequency selection, and equal power allocation, exploiting the multiple power cables, are studied. Then, the impact of several system parameters such as the energy-harvesting time factor, various idle power consumption profiles, relay location, power allocation as well as different noise scenarios are examined. The results reveal that the proposed DF-EH system is able to provide energy efficiency improvements of more than 30\% compared to the conventional DF relaying scheme. It is also shown that the proposed system with optimal frequency selection performs better at low SNR, whereas at high SNR the equal power allocation based system will have the best performance.

  @article{0f4de0c9592b888201596457d27a114d,
  author = {Rabbie, Khaled and Adebisi, Bamidele and Tonello, Andrea M. and Nauryzbayev, Galymzhan},
  title = {{For More Energy Efficient Dual-hop DF Cooperative Relaying PLC Systems}},
  journal = {IEEE Systems Journal},
  year = {2018},
  abstract = {Energy efficiency in multihop cooperative power-line communication (PLC) systems has recently received considerable attention in the literature. In order to make such systems more energy efficient, this paper proposes a relaying technique equipped with energy-harvesting capabilities. More specifically, we consider a dual-hop decode-and-forward (DF) broadband PLC relaying system in which the relay exploits the high noise inherent in PLC channels to further enhance energy efficiency; this system will be referred to as DF with energy harvesting (DF-EH). This study deploys, particularly, the time-switching relaying protocol for energy harvesting. An accurate analytical expression for the energy efficiency and a closed-form expression for the average outage probability of the proposed system are derived and then verified with Monte Carlo simulations. For the sake of comparison and to highlight the achievable gains, we also analyze the energy-efficiency performances and the average outage probabilities of the conventional DF relaying system, i.e., without energy harvesting, as well as that of the direct-link approach. Furthermore, various frequency selection and power allocation strategies, namely, optimal frequency selection, random frequency selection, and equal power allocation, exploiting the multiple power cables, are studied. Then, the impact of several system parameters such as the energy-harvesting time factor, various idle power consumption profiles, relay location, power allocation as well as different noise scenarios are examined. The results reveal that the proposed DF-EH system is able to provide energy efficiency improvements of more than 30\% compared to the conventional DF relaying scheme. It is also shown that the proposed system with optimal frequency selection performs better at low SNR, whereas at high SNR the equal power allocation based system will have the best performance.},
  doi = {10.1109/JSYST.2016.2639321},
  volume = {12},
  number = {2},
  pages = {2005--2016},
  month = {6},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7807318},
  }

• M. M. Schranz, W. Elmenreich, and M. Rappaport, “Designing Cyber-physical Systems with Evolutionary Algorithms,” in Cyber-Physical Laboratories in Engineering and Science Education, M. E. Auer, A. K. M. Azad, A. Edwards, and T. de Jong, Eds., Berlin: Springer, 2018, p. 111–135. doi:10.1007/978-3-319-76935-6_5
  [BibTeX] [Abstract] [Download PDF]
  

  Cyber physical systems (CPSs) find their application in different domains, including smart cities, Internet of Things (IoT), and Industry 4.0. The increasing degree of interaction among CPSs leads to unpredictable and partially unexpected behavior. The major steps to manage emerging behavior in CPSs are taken in the design process. Although a high number of methods and tools already exist from related disciplines (including complex system research, embedded system design, and self-organization), there is no comprehensive toolset available to address the extensive CPS design process. This chapter presents a proposal for a common CPS design toolset. It combines existing and emerging tools to design, simulate, evaluate, and deploy solutions for complex, real-world problems using evolutionary algorithms on the example of swarms of unmanned aerial vehicles (UAVs).

  @incollection{0f4de0c968852cea016894aa014c0f53,
  author = {Schranz, Melanie Marianne and Elmenreich, Wilfried and Rappaport, Micha},
  title = {{Designing Cyber-physical Systems with Evolutionary Algorithms}},
  booktitle = {Cyber-Physical Laboratories in Engineering and Science Education},
  publisher = {Springer},
  year = {2018},
  abstract = {Cyber physical systems (CPSs) find their application in different domains, including smart cities, Internet of Things (IoT), and Industry 4.0. The increasing degree of interaction among CPSs leads to unpredictable and partially unexpected behavior. The major steps to manage emerging behavior in CPSs are taken in the design process. Although a high number of methods and tools already exist from related disciplines (including complex system research, embedded system design, and self-organization), there is no comprehensive toolset available to address the extensive CPS design process. This chapter presents a proposal for a common CPS design toolset. It combines existing and emerging tools to design, simulate, evaluate, and deploy solutions for complex, real-world problems using evolutionary algorithms on the example of swarms of unmanned aerial vehicles (UAVs).},
  doi = {10.1007/978-3-319-76935-6\_5},
  editor = {Michael E. Auer and Abul K.M. Azad and Arthur Edwards and Ton de Jong},
  pages = {111--135},
  address = {Berlin},
  month = {4},
  url = {https://link.springer.com/chapter/10.1007\%2F978-3-319-76935-6\_5},
  }

• F. Passerini, D. Righini, and A. M. Tonello, “A Bottom-Up PLC Channel Model that Includes Radiation Effects,” in IEEE International Symposium on Power Line Communications – ISPLC 2018, New York, 2018, p. 1–6. doi:10.1109/ISPLC.2018.8360224
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c963644571016367f9121a0122,
  author = {Passerini, Federico and Righini, Davide and Tonello, Andrea M.},
  title = {{A Bottom-Up PLC Channel Model that Includes Radiation Effects}},
  booktitle = { IEEE International Symposium on Power Line Communications - ISPLC 2018},
  year = {2018},
  doi = {10.1109/ISPLC.2018.8360224},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8360224/},
  }

• F. Passerini and A. M. Tonello, “Adaptive hybrid circuit for enhanced echo cancellation in full duplex PLC,” in IEEE International Symposium on Power Line Communications – ISPLC 2018, New York, 2018, p. 1–6. doi:10.1109/ISPLC.2018.8360238
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c963644571016367ef8f9d00da,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Adaptive hybrid circuit for enhanced echo cancellation in full duplex PLC}},
  booktitle = { IEEE International Symposium on Power Line Communications - ISPLC 2018},
  year = {2018},
  doi = {10.1109/ISPLC.2018.8360238},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8360238/},
  }

• F. Marcuzzi and A. M. Tonello, “Artifical Intelligence Based Routing in PLC Networks,” in IEEE International Symposium on Power Line Communications – ISPLC 2018, New York, 2018, p. 1–6. doi:10.1109/ISPLC.2018.8360241
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c963644571016367f6aee40109,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{Artifical Intelligence Based Routing in PLC Networks}},
  booktitle = { IEEE International Symposium on Power Line Communications - ISPLC 2018},
  year = {2018},
  doi = {10.1109/ISPLC.2018.8360241},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8360241/},
  }

• D. Righini and A. M. Tonello, “Noise Determinism in Multi-Conductor Narrow Band PLC Channels,” in IEEE International Symposium on Power Line Communications – ISPLC 2018, New York, 2018, p. 1–6. doi:10.1109/ISPLC.2018.8360239
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c963644571016367f349c800f5,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{Noise Determinism in Multi-Conductor Narrow Band PLC Channels}},
  booktitle = { IEEE International Symposium on Power Line Communications - ISPLC 2018},
  year = {2018},
  doi = {10.1109/ISPLC.2018.8360239},
  pages = {1--6},
  address = {New York},
  month = {4},
  publisher = {IEEE ComSoc},
  url = {https://ieeexplore.ieee.org/document/8360239/},
  }

• S. Shaikh and A. M. Tonello, “DoA Estimation in EM Lens Assisted Massive Antenna System Using Subsets Based Antenna Selection and High Resolution Algorithms,” Radioengineering, vol. 27, iss. 1, p. 159–168, 2018. doi:10.13164/re.2018.0159
  [BibTeX] [Abstract] [Download PDF]
  

  In recent times, massive antenna array technologyhas captured significant attention among wirelesscommunication researchers. This is a field with strong potentialto increase rates of data transfer; mitigate interferenceand serve a large number of users simultaneously. Tocontribute further to this emerging technology, this paperpresents an approach for the line-of-sight (LoS) based directionof arrival (DoA) estimation using the electromagnetic(EM) lens-focusing antenna concept. The EM lens focusesthe received signal energy as a function of the angle of arrival(AoA) to a small subset/area of the antenna array. This isadvantageous, as it helps to reduce both hardware implementation(RF chains) and the complexity of signal processingin the large number of antennas system. Furthermore, thisfocusing capability of the EM lens provides additional interferencerejection gain which leads to estimate the DoA ofuser terminals precisely. Hence, in this work, subsets basedantenna selection approach and subspace-based high resolutionDoA estimation algorithms have been considered incombination with the EM lens assisted massive antenna system.In simulations where the DoA is estimated with the EMlens, the results are comparable with conventional methods ofDoA estimation without an EM lens, despite the significantlyreduced overall system complexity.

  @article{0f4de0c9636952fa016369990786004e,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{DoA Estimation in EM Lens Assisted Massive Antenna System Using Subsets Based Antenna Selection and High Resolution Algorithms}},
  journal = {Radioengineering},
  year = {2018},
  abstract = {In recent times, massive antenna array technologyhas captured significant attention among wirelesscommunication researchers. This is a field with strong potentialto increase rates of data transfer; mitigate interferenceand serve a large number of users simultaneously. Tocontribute further to this emerging technology, this paperpresents an approach for the line-of-sight (LoS) based directionof arrival (DoA) estimation using the electromagnetic(EM) lens-focusing antenna concept. The EM lens focusesthe received signal energy as a function of the angle of arrival(AoA) to a small subset/area of the antenna array. This isadvantageous, as it helps to reduce both hardware implementation(RF chains) and the complexity of signal processingin the large number of antennas system. Furthermore, thisfocusing capability of the EM lens provides additional interferencerejection gain which leads to estimate the DoA ofuser terminals precisely. Hence, in this work, subsets basedantenna selection approach and subspace-based high resolutionDoA estimation algorithms have been considered incombination with the EM lens assisted massive antenna system.In simulations where the DoA is estimated with the EMlens, the results are comparable with conventional methods ofDoA estimation without an EM lens, despite the significantlyreduced overall system complexity.},
  doi = {10.13164/re.2018.0159},
  volume = {27},
  number = {1},
  pages = {159--168},
  month = {4},
  url = {https://www.radioeng.cz/fulltexts/2018/18\_01\_0159\_0168.pdf},
  }

• K. Witrisal, C. Antón-Haro, J. del Peral-Rosado, G. Seco-Granados, R. Raulefs, E. Leitinger, S. Grebien, T. Wilding, D. Dardari, E. S. Lohan, H. Wymeersch, J. Floch, A. M. Tonello, S. Shaikh, T. Zemen, T. Pedersen, T. Fath, C. Fernández-Prades, J. Vilà-Valls, R. Thoma, M. Nogueira, R. Zetik, W. Joseph, V. Degli Esposti, A. Navarro Cadavid, W. Arleth Cruz Lopez, B. Chitambira, F. Quitin, M. Nicoli, R. Olivera, D. Pletz, T. Baykas, B. Biljana Risteska Stojkoska, T. Trivodaliev, G. Soatti, M. Ulmschneider, B. Fleury, F. Tufvesson, F. Ponte Mueller, G. Destino, O. Renaudin, N. Franke, M. Alawieh, and B. Sackenreuter, “Whitepaper on New Localization Methods for 5G Wireless Systems and the Internet-of-Things,” 2018.
  [BibTeX] [Abstract] [Download PDF]
  

  Disruptive technologies proposed for 5G wirelesssystems and the IoT hold promise of providing unprecedentedlocalization capabilities for a wide range of application scenariosand target environments. This whitepaper summarizes the expectedfeatures and resulting properties of upcoming localizationsystems exploiting 5G and IoT technologies. It also identifies theimportant theoretical limitations and practical implementationchallenges at hand and recommends potential paths forward towardsmore accurate, robust, and secure location-based services

  @techreport{0f4de0c9636952fa016369a02b9e0061,
  author = {Witrisal, Klaus and Antón-Haro, Carles and del Peral-Rosado, José and Seco-Granados, Gonzalo and Raulefs, Ronald and Leitinger, Erik and Grebien, Stefan and Wilding, Thomas and Dardari, Davide and Lohan, Elena Simona and Wymeersch, Henk and Floch, Jean-Jacques and Tonello, Andrea M. and Shaikh, Sarmad and Zemen, Thomas and Pedersen, Troels and Fath, Thilo and Fernández-Prades, Carles and Vilà-Valls, Jordi and Thoma, Reiner and Nogueira, Marcelo and Zetik, Rudolf and Joseph, Wout and Degli Esposti, Vittorio and Navarro Cadavid, Andrés and Arleth Cruz Lopez, William and Chitambira, Benny and Quitin, Francois and Nicoli, Monica and Olivera, Rodolfo and Pletz, David and Baykas, Tuncer and Biljana Risteska Stojkoska, Biljana and Trivodaliev, Trivodaliev and Soatti, Gloria and Ulmschneider, Markus and Fleury, Bernard and Tufvesson, Fredrik and Ponte Mueller, Fabian and Destino, Giuseppe and Renaudin, Olivier and Franke, Norbert and Alawieh, Mohammad and Sackenreuter, Benjamin},
  title = {{Whitepaper on New Localization Methods for 5G Wireless Systems and the Internet-of-Things}},
  year = {2018},
  abstract = {Disruptive technologies proposed for 5G wirelesssystems and the IoT hold promise of providing unprecedentedlocalization capabilities for a wide range of application scenariosand target environments. This whitepaper summarizes the expectedfeatures and resulting properties of upcoming localizationsystems exploiting 5G and IoT technologies. It also identifies theimportant theoretical limitations and practical implementationchallenges at hand and recommends potential paths forward towardsmore accurate, robust, and secure location-based services},
  month = {4},
  url = {http://www.iracon.org/wp-content/uploads/2018/03/IRACON-WP2.pdf},
  }

• A. M. Tonello and V. S. R. P. Pathuri Bhuvana, “Exploiting Antenna Arrays for Position Tracking of Unmanned Aerial Vehicles,” in 22nd International ITG Workshop on Smart Antennas (WSA 2018), Frankfurt am Main, 2018, p. 1–6.
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c963644571016367fd9884013f,
  author = {Tonello, Andrea M. and Pathuri Bhuvana, Venkata Satya Rajendra Pr},
  title = {{Exploiting Antenna Arrays for Position Tracking of Unmanned Aerial Vehicles}},
  booktitle = {22nd International ITG Workshop on Smart Antennas (WSA 2018)},
  year = {2018},
  pages = {1--6},
  address = {Frankfurt am Main},
  month = {3},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  url = {https://ieeexplore.ieee.org/document/8385503/},
  }

• B. Salamat and A. M. Tonello, “Novel Trajectory Generation and Adaptive Evolutionary Feedback Controller for Quadrotors,” in IEEE Aerospace Conference 2018, Piscataway (NJ), 2018, p. 1–8. doi:10.1109/AERO.2018.8396552
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c96364457101636801580f0159,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Novel Trajectory Generation and Adaptive Evolutionary Feedback Controller for Quadrotors}},
  booktitle = {IEEE Aerospace Conference 2018},
  year = {2018},
  doi = {10.1109/AERO.2018.8396552},
  pages = {1--8},
  address = {Piscataway (NJ)},
  month = {3},
  publisher = {IEEE},
  url = {https://ieeexplore.ieee.org/document/8396552/},
  }

• V. S. R. P. Pathuri Bhuvana, C. Preissl, A. M. Tonello, and M. Huemer, “Multi-Sensor Information Filtering with Information based Sensor Selection and Outlier Rejection,” IEEE Sensors Journal, vol. 18, iss. 6, p. 2442–2452, 2018. doi:10.1109/JSEN.2017.2789239
  [BibTeX] [Abstract] [Download PDF]
  

  Nowadays, multi-sensor networks are evolving into large scale networks with limited bandwidth and energy reservoirs. Hence, reducing the number of information exchanges among the sensors is an efficient approach to meet the stringent requirements of bandwidth and energy in the context of multisensor state estimation. In this paper, a surprisal based multisensor information filtering is proposed to allow on average a desired number of sensors with most informative measurements to participate in the information exchange while discarding the sensors with non-informative measurements and outliers. The concept of surprisal is used to facilitate the sensors in the network to independently classify their measurements as informative, noninformative and outliers by setting upper and lower thresholds. Simulation results show that the proposed scheme ensures that on average only a desired number of sensors with the most informative measurements participate in the information exchange and achieves greater estimation accuracy compared to the method where the sensors are selected randomly for the same number of transmissions.

  @article{0f4de0c9610ea75c01611e92639b1253,
  author = {Pathuri Bhuvana, Venkata Satya Rajendra Pr and Preissl, Christoph and Tonello, Andrea M. and Huemer, Mario},
  title = {{Multi-Sensor Information Filtering with Information based Sensor Selection and Outlier Rejection}},
  journal = {IEEE Sensors Journal},
  year = {2018},
  abstract = {Nowadays, multi-sensor networks are evolving into large scale networks with limited bandwidth and energy reservoirs. Hence, reducing the number of information exchanges among the sensors is an efficient approach to meet the stringent requirements of bandwidth and energy in the context of multisensor state estimation. In this paper, a surprisal based multisensor information filtering is proposed to allow on average a desired number of sensors with most informative measurements to participate in the information exchange while discarding the sensors with non-informative measurements and outliers. The concept of surprisal is used to facilitate the sensors in the network to independently classify their measurements as informative, noninformative and outliers by setting upper and lower thresholds. Simulation results show that the proposed scheme ensures that on average only a desired number of sensors with the most informative measurements participate in the information exchange and achieves greater estimation accuracy compared to the method where the sensors are selected randomly for the same number of transmissions.},
  doi = {10.1109/JSEN.2017.2789239},
  volume = {18},
  number = {6},
  pages = {2442--2452},
  month = {3},
  url = {https://ieeexplore.ieee.org/document/8245799/},
  }

• K. Rabie, B. Adebisi, A. M. Tonello, S. Yarkan, and M. Ijaz, “Two-Stage Non-Orthogonal Multiple Access Over Power Line Communication Channels,” IEEE Access, vol. 6, p. 17368–17376, 2018. doi:10.1109/ACCESS.2018.2820175
  [BibTeX] [Abstract] [Download PDF]
  

  Non-orthogonal multiple access (NOMA) has recently been proposed for dual-hop cooperative relaying power line communication (PLC) systems. Unlike conventional NOMA-PLC schemes which deploy NOMA only at the relay, this paper proposes to enhance the performance of such systems by implementing the principle of NOMA at both the source and relaying modems. The system performance is evaluated in terms of the average sum capacity for which analytical expressions are derived for both the improved and conventional NOMA-PLC systems. Throughout our analysis, the PLC channel is assumed narrow-band modeled with log-normal amplitude distribution and the total PLC noise consists of both background and impulsive noise. Monte Carlo simulations are provided to corroborate the accuracy of our theoretical analysis. The derived expressions are utilized to examine the impact of various system parameters on the average capacity performance; this includes: impulsive noise probability, network branching, power allocation coefficients, and transmit power. The optimization problem of the power allocation coefficients is also addressed for both NOMA-PLC systems under consideration. Results reveal that significant gains in the average capacity can be attained with the improved NOMA-PLC approach compared to the conventional system. In addition, the improved system is able to meet a given performance requirement with smaller transmit power offering more relaxed electromagnetic compatibility issues associated with PLCs. Finally, it is demonstrated that optimizing the power allocation coefficients at both the source and relay modems is crucial to maximize performance.

  @article{0f4de0c763210b2801632a951f910322,
  author = {Rabie, Khaled and Adebisi, Bamidele and Tonello, Andrea M. and Yarkan, Serhan and Ijaz, Muhammad},
  title = {{Two-Stage Non-Orthogonal Multiple Access Over Power Line Communication Channels}},
  journal = {IEEE Access},
  year = {2018},
  abstract = {Non-orthogonal multiple access (NOMA) has recently been proposed for dual-hop cooperative relaying power line communication (PLC) systems. Unlike conventional NOMA-PLC schemes which deploy NOMA only at the relay, this paper proposes to enhance the performance of such systems by implementing the principle of NOMA at both the source and relaying modems. The system performance is evaluated in terms of the average sum capacity for which analytical expressions are derived for both the improved and conventional NOMA-PLC systems. Throughout our analysis, the PLC channel is assumed narrow-band modeled with log-normal amplitude distribution and the total PLC noise consists of both background and impulsive noise. Monte Carlo simulations are provided to corroborate the accuracy of our theoretical analysis. The derived expressions are utilized to examine the impact of various system parameters on the average capacity performance; this includes: impulsive noise probability, network branching, power allocation coefficients, and transmit power. The optimization problem of the power allocation coefficients is also addressed for both NOMA-PLC systems under consideration. Results reveal that significant gains in the average capacity can be attained with the improved NOMA-PLC approach compared to the conventional system. In addition, the improved system is able to meet a given performance requirement with smaller transmit power offering more relaxed electromagnetic compatibility issues associated with PLCs. Finally, it is demonstrated that optimizing the power allocation coefficients at both the source and relay modems is crucial to maximize performance.},
  doi = {10.1109/ACCESS.2018.2820175},
  volume = {6},
  pages = {17368--17376},
  month = {3},
  url = {https://ieeexplore.ieee.org/document/8327593/},
  }

• M. Rappaport, D. Conzon, M. Jdeed, M. M. Schranz, E. Ferrera, and W. Elmenreich, “Distributed Simulation for Evolutionary Design of Swarms of Cyber-Physical Systems,” in Proceedings International Conference on Adaptive and Self-Adaptive Systems and Applications, , 2018, p. 60–65.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c762e3589d0162f19d06880095,
  author = {Rappaport, Micha and Conzon, Davide and Jdeed, Midhat and Schranz, Melanie Marianne and Ferrera, Enrico and Elmenreich, Wilfried},
  title = {{Distributed Simulation for Evolutionary Design of Swarms of Cyber-Physical Systems}},
  booktitle = { Proceedings International Conference on Adaptive and Self-Adaptive Systems and Applications},
  year = {2018},
  pages = {60--65},
  month = {2},
  isbn = {978-1-61208-610-1},
  url = {http://www.thinkmind.org/index.php?view=article\&articleid=adaptive\_2018\_2\_40\_58001},
  }

• D. Righini, F. Passerini, and A. M. Tonello, “Modeling Transmission and Radiation Effects When Exploiting Power Line Networks for Communication,” IEEE Transactions on Electromagnetic Compatibility, vol. 60, iss. 1, p. 59–67, 2018. doi:10.1109/TEMC.2017.2728370
  [BibTeX] [Abstract] [Download PDF]
  

  Power distribution grids are exploited by power line communication (PLC) technology to convey high-frequency data signals. The natural conformation of such power line networks causes a relevant part of the high-frequency signals traveling through them to be radiated instead of being conducted. This causes not only electromagnetic interference with devices positioned next to power line cables, but also a consistent deterioration of the signal integrity. Since existing PLC channel models do not take into account losses due to radiation phenomenon, this paper responds to the need of developing accurate network simulators. A thorough analysis is herein presented about the conducted and radiated effects on the signal integrity, digging into differential mode to common mode signal conversion due to network imbalances. The outcome of this work allows each network element to be described by a mixed-mode transmission matrix. Furthermore, the classical per-unit-length equivalent circuit of transmission lines is extended to incorporate radiation resistances. The results of this paper lay the foundations for future developments of comprehensive power line network models that incorporate conducted and radiated phenomena

  @article{0f4de0c95d049960015d0882127b0261,
  author = {Righini, Davide and Passerini, Federico and Tonello, Andrea M.},
  title = {{Modeling Transmission and Radiation Effects When Exploiting Power Line Networks for Communication}},
  journal = {IEEE Transactions on Electromagnetic Compatibility},
  year = {2018},
  abstract = {Power distribution grids are exploited by power line communication (PLC) technology to convey high-frequency data signals. The natural conformation of such power line networks causes a relevant part of the high-frequency signals traveling through them to be radiated instead of being conducted. This causes not only electromagnetic interference with devices positioned next to power line cables, but also a consistent deterioration of the signal integrity. Since existing PLC channel models do not take into account losses due to radiation phenomenon, this paper responds to the need of developing accurate network simulators. A thorough analysis is herein presented about the conducted and radiated effects on the signal integrity, digging into differential mode to common mode signal conversion due to network imbalances. The outcome of this work allows each network element to be described by a mixed-mode transmission matrix. Furthermore, the classical per-unit-length equivalent circuit of transmission lines is extended to incorporate radiation resistances. The results of this paper lay the foundations for future developments of comprehensive power line network models that incorporate conducted and radiated phenomena},
  doi = {10.1109/TEMC.2017.2728370},
  volume = {60},
  number = {1},
  pages = {59--67},
  month = {2},
  url = {http://ieeexplore.ieee.org/document/8017566/?arnumber=8017566\&source=authoralert},
  }

• L. Esterle and B. Rinner, ” An Architecture for Self-aware IoT Applications,” in Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, Piscataway (NJ): IEEE, 2018, p. 6588–6592. doi:10.1109/ICASSP.2018.8462005
  [BibTeX]

  @incollection{0f4de0c9646f79d901646fc7ead40007,
  author = {Esterle, Lukas and Rinner, Bernhard},
  title = {{ An Architecture for Self-aware IoT Applications}},
  booktitle = { Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing},
  publisher = {IEEE},
  year = {2018},
  doi = {10.1109/ICASSP.2018.8462005},
  pages = {6588--6592},
  address = {Piscataway (NJ)},
  }

• A. Khan, A. Cavallaro, and B. Rinner, “Cooperative Robots to Observe Moving Targets: Review,” IEEE Transactions on Cybernetics, vol. 48, p. 187–198, 2018. doi:10.1109/TCYB.2016.2628161
  [BibTeX]

  @article{0f4de0c759d1433a0159d522a37b04ea,
  author = {Khan, Asif and Cavallaro, Andrea and Rinner, Bernhard},
  title = {{Cooperative Robots to Observe Moving Targets: Review}},
  journal = {IEEE Transactions on Cybernetics},
  year = {2018},
  doi = {10.1109/TCYB.2016.2628161},
  volume = {48},
  pages = {187--198},
  month = {1},
  }

• E. Yanmaz, S. Yahyanejad, B. Rinner, H. Hellwagner, and C. Bettstetter, “Drone networks: Communications, coordination, and sensing,” Ad Hoc Networks, vol. 68, p. 1–15, 2018. doi:10.1016/j.adhoc.2017.09.001
  [BibTeX]

  @article{0f4de0c95f47c59d015f51f8b0190667,
  author = {Yanmaz, Evsen and Yahyanejad, Saeed and Rinner, Bernhard and Hellwagner, Hermann and Bettstetter, Christian},
  title = {{Drone networks: Communications, coordination, and sensing}},
  journal = {Ad Hoc Networks},
  year = {2018},
  doi = {10.1016/j.adhoc.2017.09.001},
  volume = {68},
  pages = {1--15},
  }

• N. Bisagno, N. Conci, and B. Rinner, “Dynamic Camera Network Reconfiguration for Crowd Surveillance,” in Proceedings of the 12th International Conference on Distributed Smart Cameras, New York, NY: ACM Digital Library, 2018, p. 1–6. doi:10.1145/3243394.3243704
  [BibTeX]

  @incollection{0f4de0c767319da801673a4219640392,
  author = {Bisagno, Niccoló and Conci, Nicola and Rinner, Bernhard},
  title = {{Dynamic Camera Network Reconfiguration for Crowd Surveillance}},
  booktitle = {Proceedings of the 12th International Conference on Distributed Smart Cameras },
  publisher = {ACM Digital Library},
  year = {2018},
  doi = {10.1145/3243394.3243704},
  pages = {1--6},
  address = {New York, NY},
  }

• W. Elmenreich, M. Jungmeier, and C. Pichler-Koban, Game of Clones: Schülerinnen und Schüler modellieren die Bekämpfung des Staudenknöterichs (Fallopia japonica), 2018.
  [BibTeX] [Abstract] [Download PDF]
  

  Der Staudenknöterich (Fallopia japonica) ist ein bekannter konkurrenzstarker Neophyt. Aufgrund seiner außergewöhnlichen physiologischen und morphologischen Eigenschaften konnte sich der Staudenknöterich in Europa massiv ausbreiten. Die Ausbreitung erfolgt primär über ein raschwüchsiges Rhizom-System, aus dem bis zu vier Meter hohe klonale Bestände erwachsen. Die mono dominanten Bestände verursachen grundlegende Veränderungen bestehender Ökosysteme und Biotope im Hinblick auf Artenausstattung, Struktur und Erscheinungsbild. In naturschutzfachlich wertvollen Flächen, insbesondere an Gewässern, in Auwäldern, Feuchtlebensräumen und -brachen aber auch entlang von Bahntrassen oder Straßen ist das ein erhebliches Problem. In vielen Regionen Europas, insbesondere in Naturschutzgebieten, wird Fallopia daher aktiv bekämpft. Versuche, die Pflanze zurückzudrängen oder auch nur ihre Ausbreitung einzudämmen, sind oft erfolglos, selbst wenn aufwändige Verfahren und unterschiedliche Maßnahmen zum Einsatz kommen.In einem Projekt des Forschungsprogramms Sparkling Science arbeitet ein interdisziplinäres Forschungsteam gemeinsam mit Schülerinnen und Schülern daran, das Ausbreitungsverhalten der Pflanze unter verschiedenen Bedingungen zu analysieren, räumlich zu modellieren und in einer Computersimulation zusammenzuführen. Die dabei gewonnenen Erkenntnisse und die unterschiedlichen Bekämpfungsmaßnahmen werden im Strategiespiel Game of Clones aufbereitet. Dieses soll als analoges Brettspiel wie auch als Computerspiel zur Verfügung stehen. Je nach Ausgangslage können unterschiedliche Maßnahmen und Maßnahmenkombinationen zum Erfolg führen, das heißt die Pflanze in ihrem Wachstum eindämmen. Neben einer umfassenden Literaturauswertung beruht die Modellierung auf Beobachtungen und Experimenten. Im Wesentlichen erfolgen Kartierungen, eine genetische Zuordnung der Klone (Barcoding), die Analyse von Zeitreihen, eine groß angelegte Rhizomfreilegung sowie eine Beobachtung der Rhizome unter kontrollierten Bedingungen (Rhizoboxen). Die Umsetzung des Simulationsmodells erfolgt mittels eines zellulären Automaten. Dies erfolgt in einer browserbasierten Programmierung und erlaubt es, verschiedene Ausbreitungs- und Bekämpfungsszenarien spielerisch nachzuvollziehen. Das Projekt ist im Umsetzungsstadium, erste Ergebnisse liegen bereits vor. Auf die Angabe von Literatur wird im Abstract verzichtet. Jedoch wird auf eine umfassende Bibliographie von aktuell etwa 350 Zitaten verwiesen, die separat zur Verfügung gestellt werden kann.

  @misc{0f4de0c968a4b89e0168a8b34fe20176,
  abstract = {Der Staudenknöterich (Fallopia japonica) ist ein bekannter konkurrenzstarker Neophyt. Aufgrund seiner außergewöhnlichen physiologischen und morphologischen Eigenschaften konnte sich der Staudenknöterich in Europa massiv ausbreiten. Die Ausbreitung erfolgt primär über ein raschwüchsiges Rhizom-System, aus dem bis zu vier Meter hohe klonale Bestände erwachsen. Die mono dominanten Bestände verursachen grundlegende Veränderungen bestehender Ökosysteme und Biotope im Hinblick auf Artenausstattung, Struktur und Erscheinungsbild. In naturschutzfachlich wertvollen Flächen, insbesondere an Gewässern, in Auwäldern, Feuchtlebensräumen und -brachen aber auch entlang von Bahntrassen oder Straßen ist das ein erhebliches Problem. In vielen Regionen Europas, insbesondere in Naturschutzgebieten, wird Fallopia daher aktiv bekämpft. Versuche, die Pflanze zurückzudrängen oder auch nur ihre Ausbreitung einzudämmen, sind oft erfolglos, selbst wenn aufwändige Verfahren und unterschiedliche Maßnahmen zum Einsatz kommen.In einem Projekt des Forschungsprogramms Sparkling Science arbeitet ein interdisziplinäres Forschungsteam gemeinsam mit Schülerinnen und Schülern daran, das Ausbreitungsverhalten der Pflanze unter verschiedenen Bedingungen zu analysieren, räumlich zu modellieren und in einer Computersimulation zusammenzuführen. Die dabei gewonnenen Erkenntnisse und die unterschiedlichen Bekämpfungsmaßnahmen werden im Strategiespiel Game of Clones aufbereitet. Dieses soll als analoges Brettspiel wie auch als Computerspiel zur Verfügung stehen. Je nach Ausgangslage können unterschiedliche Maßnahmen und Maßnahmenkombinationen zum Erfolg führen, das heißt die Pflanze in ihrem Wachstum eindämmen. Neben einer umfassenden Literaturauswertung beruht die Modellierung auf Beobachtungen und Experimenten. Im Wesentlichen erfolgen Kartierungen, eine genetische Zuordnung der Klone (Barcoding), die Analyse von Zeitreihen, eine groß angelegte Rhizomfreilegung sowie eine Beobachtung der Rhizome unter kontrollierten Bedingungen (Rhizoboxen). Die Umsetzung des Simulationsmodells erfolgt mittels eines zellulären Automaten. Dies erfolgt in einer browserbasierten Programmierung und erlaubt es, verschiedene Ausbreitungs- und Bekämpfungsszenarien spielerisch nachzuvollziehen. Das Projekt ist im Umsetzungsstadium, erste Ergebnisse liegen bereits vor. Auf die Angabe von Literatur wird im Abstract verzichtet. Jedoch wird auf eine umfassende Bibliographie von aktuell etwa 350 Zitaten verwiesen, die separat zur Verfügung gestellt werden kann.},
  author = {Elmenreich, Wilfried and Jungmeier, Michael and Pichler-Koban, Christina},
  title = {Game of Clones: Schülerinnen und Schüler modellieren die Bekämpfung des Staudenknöterichs (Fallopia japonica)},
  howpublished = {Print},
  year = {2018},
  isbn = {978-3-85328-081-2},
  url = {http://mobile.aau.at/publications/elmenreich-2018-GameOfClones.pdf},
  }

• A. Ibrahim, T. Khatib, A. Mohamed, and W. Elmenreich, “Modeling of the output current of a photovoltaic grid-connected system using random forests technique,” Energy Exploration & Exploitation, vol. 36, iss. 1, p. 132–148, 2018. doi:10.1177/0144598717723648
  [BibTeX] [Download PDF]

  @article{0f4de0c7614add2c01614c6b9f0c00bc,
  author = {Ibrahim, A. and Khatib, Tamer and Mohamed, A. and Elmenreich, Wilfried},
  title = {{Modeling of the output current of a photovoltaic grid-connected system using random forests technique}},
  journal = {Energy Exploration \& Exploitation},
  year = {2018},
  doi = {10.1177/0144598717723648},
  volume = {36},
  number = {1},
  pages = {132--148},
  url = {http://journals.sagepub.com/doi/abs/10.1177/0144598717723648},
  }

• M. M. Schranz, A. Bagnato, E. Brosse, and W. Elmenreich, “Modelling a CPS Swarm System: A Simple Case Study,” in Proceedings of the 6th International Conference on Model-Driven Engineering and Software Development, Setubal, 2018, p. 615–624. doi:10.5220/0006731106150624
  [BibTeX] [Download PDF]

  @inproceedings{0f4de0c968852cea016894bee6b40fad,
  author = {Schranz, Melanie Marianne and Bagnato, Alessandra and Brosse, Etienne and Elmenreich, Wilfried},
  title = {{Modelling a CPS Swarm System: A Simple Case Study}},
  booktitle = { Proceedings of the 6th International Conference on Model-Driven Engineering and Software Development},
  year = {2018},
  editor = {Slimane Hammoudi and Luis Ferreira Pires and Bran Selic},
  doi = {10.5220/0006731106150624},
  pages = {615--624},
  address = {Setubal},
  month = {1},
  publisher = {SciTePress - Science and Technology Publications},
  url = {http://www.scitepress.org/PublicationsDetail.aspx?ID=JzM4VZaTL/k=\&t=1},
  }

• A. Erdelyi, T. Winkler, and B. Rinner, ” Privacy Protection vs. Utility in Visual Data: An Objective Evaluation Framework,” Multimedia Tools and Applications, vol. 77, iss. 2, p. 2285–2312, 2018. doi:10.1007/s11042-016-4337-7
  [BibTeX] [Download PDF]

  @article{0f4de0c759d1433a0159d466b471014a,
  author = {Erdelyi, Adam and Winkler, Thomas and Rinner, Bernhard},
  title = {{ Privacy Protection vs. Utility in Visual Data: An Objective Evaluation Framework}},
  journal = {Multimedia Tools and Applications },
  year = {2018},
  doi = {10.1007/s11042-016-4337-7},
  volume = {77},
  number = {2},
  pages = {2285--2312},
  url = {https://link.springer.com/content/pdf/10.1007\%2Fs11042-016-4337-7.pdf},
  }

• M. Gabriel, S. Rabitsch, W. Elmenreich, and J. N. A. Brown, Set Phasers to Teach! Star Trek in Research and Teaching, Springer International Publishing AG, 2018. doi:10.16995/zff.1918
  [BibTeX]

  @book{0f4de0c765390fe201654185fc6f001d,
  author = {Gabriel, Martin and Rabitsch, Stefan and Elmenreich, Wilfried and Brown, John N. A.},
  title = {{Set Phasers to Teach! Star Trek in Research and Teaching}},
  publisher = {Springer International Publishing AG},
  year = {2018},
  doi = {10.16995/zff.1918},
  isbn = {978-3-319-73775-1},
  }

• W. Elmenreich, “The Energy System in Star Trek and Its Real-Life Counterparts,” in Set Phasers to Teach!, Berlin: Springer, 2018, p. 63–70. doi:10.1007/978-3-319-73776-8_6
  [BibTeX] [Download PDF]

  @incollection{0f4de0c765f11a730165f21b7cd90038,
  author = {Elmenreich, Wilfried},
  title = {{The Energy System in Star Trek and Its Real-Life Counterparts}},
  booktitle = {Set Phasers to Teach!},
  publisher = {Springer},
  year = {2018},
  doi = {10.1007/978-3-319-73776-8\_6},
  pages = {63--70},
  address = {Berlin},
  isbn = {978-3-319-73775-1},
  url = {https://link.springer.com/chapter/10.1007\%2F978-3-319-73776-8\_6},
  }

• S. C. Akkaladevi, M. Plasch, S. Maddukuri, C. Eitzinger, A. Pichler, and B. Rinner, “Toward an Interactive Reinforcement Based Learning Framework for Human Robot Collaborative Assembly Processes,” Frontiers in Robotics and AI, vol. 5, p. 1–15, 2018. doi:10.3389/frobt.2018.00126
  [BibTeX] [Download PDF]

  @article{0f4de0c767319da801673a07225e032a,
  author = {Akkaladevi, Sharath Chandra and Plasch, Matthias and Maddukuri, Sriniwas and Eitzinger, Christian and Pichler, Andreas and Rinner, Bernhard},
  title = {{Toward an Interactive Reinforcement Based Learning Framework for Human Robot Collaborative Assembly Processes}},
  journal = {Frontiers in Robotics and AI},
  year = {2018},
  doi = {10.3389/frobt.2018.00126},
  volume = {5},
  pages = {1--15},
  url = {https://www.frontiersin.org/articles/10.3389/frobt.2018.00126/full},
  }

• S. C. Akkaladevi, M. Plasch, C. Eitzinger, A. Pichler, and B. Rinner, “Towards a Context Enhanced Framework for Multi Object Tracking in Human Robot Collaboration,” in Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems, Piscataway (NJ): IEEE, 2018, p. 168–173. doi:10.1109/IROS.2018.8593842
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9646f79d901646ff28f6d0044,
  author = {Akkaladevi, Sharath Chandra and Plasch, Matthias and Eitzinger, Christian and Pichler, Andreas and Rinner, Bernhard},
  title = {{Towards a Context Enhanced Framework for Multi Object Tracking in Human Robot Collaboration}},
  booktitle = {Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems},
  publisher = {IEEE},
  year = {2018},
  doi = {10.1109/IROS.2018.8593842},
  pages = {168--173},
  address = {Piscataway (NJ)},
  url = {https://ieeexplore.ieee.org/document/8593842},
  }

• M. Weyrer and B. Rinner, “UAV Motion Planning and Control for Multi-Coverage of 3D Environments,” in Proceedings of the 2018 International Conference on Unmanned Aircraft Systems, , 2018, p. 939–946. doi:10.1109/ICUAS.2018.8453427
  [BibTeX]

  @incollection{0f4de0c9646f79d901646fed9c1d0026,
  author = {Weyrer, Mathias and Rinner, Bernhard},
  title = {{UAV Motion Planning and Control for Multi-Coverage of 3D Environments}},
  booktitle = {Proceedings of the 2018 International Conference on Unmanned Aircraft Systems},
  year = {2018},
  doi = {10.1109/ICUAS.2018.8453427},
  pages = {939--946},
  }

2017

• J. Scherer and B. Rinner, “Short and Full Horizon Motion Planning for Persistent multi-UAV Surveillance with Energy and Communication Constraints,” in Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Piscataway (NJ): IEEE, 2017, p. 230–235. doi:10.1109/IROS.2017.8202162
  [BibTeX] [Download PDF]

  @incollection{0f4de0c75f01a895015f05179ab70011,
  author = {Scherer, Jürgen and Rinner, Bernhard},
  title = {{Short and Full Horizon Motion Planning for Persistent multi-UAV Surveillance with Energy and Communication Constraints}},
  booktitle = {Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
  publisher = {IEEE},
  year = {2017},
  doi = {10.1109/IROS.2017.8202162},
  pages = {230--235},
  address = {Piscataway (NJ)},
  month = {12},
  isbn = {978-1-5386-2682-5},
  url = {http://ieeexplore.ieee.org/document/8202162/},
  }

• F. Passerini and A. M. Tonello, “Analysis of High Frequency Impedance Measurement Techniques for Power Line Network Sensing,” IEEE Sensors Journal, vol. 17, iss. 3, p. 7630–7640, 2017. doi:10.1109/JSEN.2017.2732737
  [BibTeX] [Abstract] [Download PDF]
  

  A major aspect in power line distribution networks is the constant monitoring of the network properties. With the advent of the smart grid concept, distributed monitoring has started complementing the information of the central stations. In this paper, power line communications modems deployed throughout the network provide a tool to monitor high-frequency components of the signals traveling through a power line network. We propose, therefore, to use them not only as communication devices but also as network sensors. Besides classical voltage measurements, these sensors can be designed to monitor high-frequency impedances, which provide useful information about the power line network, as for instance status of the topology, cable degradation, and occurrence of faults. In this paper, we provide a technical analysis of different voltage and impedance measurement techniques that can be integrated into power line modems. We assess the accuracy of the techniques under analysis in the presence of network noise, and we discuss the statistical characteristics of the measurement noise. We finally compare the performances of the examined techniques when applied to the fault detection problem in distribution networks, in order to establish which technique gives more accurate results

  @article{0f4de0c75d4fbbb5015d5025ee7e0000,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Analysis of High Frequency Impedance Measurement Techniques for Power Line Network Sensing}},
  journal = {IEEE Sensors Journal},
  year = {2017},
  abstract = {A major aspect in power line distribution networks is the constant monitoring of the network properties. With the advent of the smart grid concept, distributed monitoring has started complementing the information of the central stations. In this paper, power line communications modems deployed throughout the network provide a tool to monitor high-frequency components of the signals traveling through a power line network. We propose, therefore, to use them not only as communication devices but also as network sensors. Besides classical voltage measurements, these sensors can be designed to monitor high-frequency impedances, which provide useful information about the power line network, as for instance status of the topology, cable degradation, and occurrence of faults. In this paper, we provide a technical analysis of different voltage and impedance measurement techniques that can be integrated into power line modems. We assess the accuracy of the techniques under analysis in the presence of network noise, and we discuss the statistical characteristics of the measurement noise. We finally compare the performances of the examined techniques when applied to the fault detection problem in distribution networks, in order to establish which technique gives more accurate results},
  doi = {10.1109/JSEN.2017.2732737},
  volume = {17},
  number = {3},
  pages = {7630--7640},
  month = {12},
  url = {http://ieeexplore.ieee.org/document/7994720/?arnumber=7994720\&source=authoralert},
  }

• D. Neuhold, J. F. Schmidt, J. Klaue, D. Schupke, and C. Bettstetter, “Experimental Study of Packet Loss in a UWB Sensor Network for Aircraft,” in 20th ACM International Conference on Modelling, Analysis and Simulation of Wireless and Mobile Systems, New York, NY: ACM Digital Library, 2017, p. 137–142. doi:10.1145/3127540.3127549
  [BibTeX] [Abstract] [Download PDF]
  

  There is a strong demand in the aviation industry to replace cables in airplanes by wireless connectivity to gain flexibility and reduce weight. Such in-plane wireless communications must be reliable and robust against interference. As part of our activities in this domain, we present a proof-of-concept for an ultra-wideband (UWB) sensor network deployed in a mockup of a small passenger cabin of a commercial aircraft with a few passengers and report experimental results on the packet loss rate with off-the-shelf IEEE\textasciitilde802.15.4-2011 compliant UWB transceivers. It is shown that a combination of spatial and temporal diversity can significantly lower the packet loss rate of different link types without degrading throughput.

  @incollection{0f4de0c96046086b0160542c3452112d,
  author = {Neuhold, Daniel and Schmidt, Jorge Friedrich and Klaue, Jirka and Schupke, Dominic and Bettstetter, Christian},
  title = {{Experimental Study of Packet Loss in a UWB Sensor Network for Aircraft}},
  booktitle = {20th ACM International Conference on Modelling, Analysis and Simulation of Wireless and Mobile Systems},
  publisher = {ACM Digital Library},
  year = {2017},
  abstract = {There is a strong demand in the aviation industry to replace cables in airplanes by wireless connectivity to gain flexibility and reduce weight. Such in-plane wireless communications must be reliable and robust against interference. As part of our activities in this domain, we present a proof-of-concept for an ultra-wideband (UWB) sensor network deployed in a mockup of a small passenger cabin of a commercial aircraft with a few passengers and report experimental results on the packet loss rate with off-the-shelf IEEE\textasciitilde802.15.4-2011 compliant UWB transceivers. It is shown that a combination of spatial and temporal diversity can significantly lower the packet loss rate of different link types without degrading throughput.},
  doi = {10.1145/3127540.3127549},
  pages = {137--142},
  address = {New York, NY},
  month = {11},
  isbn = {978-1-4503-5162-1},
  url = {https://dl.acm.org/citation.cfm?id=3127549},
  }

• M. K. Atiq, U. Schilcher, J. F. Schmidt, and C. Bettstetter, “Semi-Blind Interference Prediction in Wireless Networks,” in 20th ACM International Conference on Modelling, Analysis and Simulation of Wireless and Mobile Systems, New York, NY: ACM Digital Library, 2017, vol. 20, p. 19–23. doi:10.1145/3127540.3127579
  [BibTeX] [Abstract] [Download PDF]
  

  Our research investigates the concept of interference prediction as an unprecedented approach for interference management and medium access in wireless networks. This paper is a first step in this direction: it proposes and evaluates a simple interference prediction technique that is based on low-complexity learning. Nodes predict the interference situation they expect to experience in the near future and select the most favorable time slot to start the transmission of a multislot message. The performance gain is evaluated in a small-scale fading environment in terms of link outage and delay against random slot selection. Simulation results show that interference prediction is a promising building block for wireless systems. Additional studies are needed to explore advanced techniques and assess their feasibility.

  @incollection{0f4de0c76011155801602189dcf301ea,
  author = {Atiq, Mahin Khushbakht and Schilcher, Udo and Schmidt, Jorge Friedrich and Bettstetter, Christian},
  title = {{Semi-Blind Interference Prediction in Wireless Networks}},
  booktitle = {20th ACM International Conference on Modelling, Analysis and Simulation of Wireless and Mobile Systems},
  publisher = {ACM Digital Library},
  year = {2017},
  abstract = {Our research investigates the concept of interference prediction as an unprecedented approach for interference management and medium access in wireless networks. This paper is a first step in this direction: it proposes and evaluates a simple interference prediction technique that is based on low-complexity learning. Nodes predict the interference situation they expect to experience in the near future and select the most favorable time slot to start the transmission of a multislot message. The performance gain is evaluated in a small-scale fading environment in terms of link outage and delay against random slot selection. Simulation results show that interference prediction is a promising building block for wireless systems. Additional studies are needed to explore advanced techniques and assess their feasibility.},
  doi = {10.1145/3127540.3127579},
  volume = {20},
  series = {ACM MSWIM},
  pages = {19--23},
  address = {New York, NY},
  month = {11},
  isbn = {978-1-4503-5162-1},
  url = {https://dl.acm.org/citation.cfm?id=3127579\&CFID=1013214916\&CFTOKEN=34652805},
  }

• S. Shaikh and A. M. Tonello, “Performance Analysis of 180° HRR Coupler Used for Direction Finding with an Antenna Array,” International Journal of Online Engineering, vol. 13, iss. 10, p. 86–102, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents the performance analysis of hybrid rat race coupler, widely used in radio frequency (RF)/wireless communication systems to couple the power in the desired way. The hybrid ring coupler consists of 4 ports, two for the input signals and two for the output signals, where sum and difference patterns of the applied two signals can be obtained at two output ports and usually called sum and difference ports. In this work, the couplers have been designed and simulated at central frequencies (fo) of 2.4 and 10 GHz using different types of substrates such as RT Duroid 5880 and FR4. Furthermore, the coupler has been used for direction finding (angle-of-arrival estimation) application, where we combine the designed hybrid rat race coupler with a simple two antenna elements array (at fo=10GHz and RT Duroid =2.2) and fabricate the circuit in order to validate the performance of the coupler by measuring the direction of arrival (DoA) from and ports. The obtained results show that good performance can be achieved with the designs considered in this paper.

  @article{0f4de0c95f975b6a015f9cbc756f0339,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{Performance Analysis of 180° HRR Coupler Used for Direction Finding with an Antenna Array}},
  journal = {International Journal of Online Engineering},
  year = {2017},
  abstract = {This paper presents the performance analysis of hybrid rat race coupler, widely used in radio frequency (RF)/wireless communication systems to couple the power in the desired way. The hybrid ring coupler consists of 4 ports, two for the input signals and two for the output signals, where sum and difference patterns of the applied two signals can be obtained at two output ports and usually called sum and difference ports. In this work, the couplers have been designed and simulated at central frequencies (fo) of 2.4 and 10 GHz using different types of substrates such as RT Duroid 5880 and FR4. Furthermore, the coupler has been used for direction finding (angle-of-arrival estimation) application, where we combine the designed hybrid rat race coupler with a simple two antenna elements array (at fo=10GHz and RT Duroid =2.2) and fabricate the circuit in order to validate the performance of the coupler by measuring the direction of arrival (DoA) from and ports. The obtained results show that good performance can be achieved with the designs considered in this paper. },
  volume = {13},
  number = {10},
  pages = {86--102},
  month = {11},
  url = {http://online-journals.org/index.php/i-joe/article/view/7410},
  }

• J. Simonjan, M. M. Schranz, and B. Rinner, “Self-calibration and Cooperative State Estimation in a Resource-aware Visual Sensor Network,” in Proceedings of the International Conference on Distributed Smart Cameras, 2017, New York, NY: ACM Digital Library, 2017, p. 101–106. doi:10.1145/3131885.3131907
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper we present an algorithm, which enables distributedvisual sensor networks to autonomously calibrate the network anddynamically build clusters to achieve cooperative object trackingbased on state estimation. A main focus is thereby on resource-awareness and -efficiency, since we aim for low-power embeddedsmart camera networks. We do not require any human interven-tion or a-priori information about the network topology to achievecalibration and tracking. Camera nodes first estimate relative posi-tions and orientations and then use the common coordinate systemto enable cooperative state estimation. For that purpose, camerasdynamically build clusters depending on their available resources.New nodes joining the network are discovered and failing nodes donot prevent others from their tasks. Compared to other methods,our approach is not only able to handle sensor measurement er-rors but also faulty camera positions gathered during the networkcalibration process.

  @incollection{0f4de0c95f47c59d015f4dbb53e805a4,
  author = {Simonjan, Jennifer and Schranz, Melanie Marianne and Rinner, Bernhard},
  title = {{Self-calibration and Cooperative State Estimation in a Resource-aware Visual Sensor Network}},
  booktitle = {Proceedings of the International Conference on Distributed Smart Cameras, 2017},
  publisher = {ACM Digital Library},
  year = {2017},
  abstract = {In this paper we present an algorithm, which enables distributedvisual sensor networks to autonomously calibrate the network anddynamically build clusters to achieve cooperative object trackingbased on state estimation. A main focus is thereby on resource-awareness and -efficiency, since we aim for low-power embeddedsmart camera networks. We do not require any human interven-tion or a-priori information about the network topology to achievecalibration and tracking. Camera nodes first estimate relative posi-tions and orientations and then use the common coordinate systemto enable cooperative state estimation. For that purpose, camerasdynamically build clusters depending on their available resources.New nodes joining the network are discovered and failing nodes donot prevent others from their tasks. Compared to other methods,our approach is not only able to handle sensor measurement er-rors but also faulty camera positions gathered during the networkcalibration process.},
  doi = {10.1145/3131885.3131907},
  pages = {101--106},
  address = {New York, NY},
  month = {11},
  isbn = {978-1-4503-5487-5},
  url = {http://doi.acm.org/10.1145/3131885.3131907},
  }

• C. Klemenjak and W. Elmenreich, “On the Applicability of Correlation Filters for Appliance Detection in Smart Meter Readings,” in 2017 IEEE International Conference on Smart Grid Communications (SmartGridComm), Piscataway (NJ): IEEE, 2017, p. 183–188. doi:10.1109/SmartGridComm.2017.8340730
  [BibTeX] [Abstract] [Download PDF]
  

  Communication systems utilise correlation filters to detect waveforms. In a broader sense, these filters examine the amount of resemblance between a template pattern and the input pattern. In the domain of smart grids, many applications require the detection of active electrical appliances, their condition as well as their current state of operation.Furthermore, the identification of power eaters, the recognition of ageing effects, and the forecast of required maintenance represent important challenges in (home) energy management systems.In this paper, we examine the applicability of correlation filters as a possible solution to meet such challenges. First, we introduce the concept of predictability to power consumption patterns of electrical appliances.Second, we present our concept and the implementation of correlation filters for this kind of application. The correlation filters utilise a particular consumption pattern of an electrical appliance to detect the respective appliance in energy readings from smart meters and smart plugs.Lastly, we assess the performance of the correlation filters on the real-world energy consumption dataset GREEND, which provides readings from smart meter data as well as appliance-level measurement equipment. As the results approve, the correlation filters show a good performance for appliances with predictable consumption patterns such as refrigerators, dishwashers, or washing machines. Thus, we propose that future work should evaluate the applicability of correlation filters in appliance diagnosis systems.

  @incollection{0f4de0c95f542480015f5839aef800a0,
  author = {Klemenjak, Christoph and Elmenreich, Wilfried},
  title = {{On the Applicability of Correlation Filters for Appliance Detection in Smart Meter Readings}},
  booktitle = {2017 IEEE International Conference on Smart Grid Communications (SmartGridComm)},
  publisher = {IEEE},
  year = {2017},
  abstract = {Communication systems utilise correlation filters to detect waveforms. In a broader sense, these filters examine the amount of resemblance between a template pattern and the input pattern. In the domain of smart grids, many applications require the detection of active electrical appliances, their condition as well as their current state of operation.Furthermore, the identification of power eaters, the recognition of ageing effects, and the forecast of required maintenance represent important challenges in (home) energy management systems.In this paper, we examine the applicability of correlation filters as a possible solution to meet such challenges. First, we introduce the concept of predictability to power consumption patterns of electrical appliances.Second, we present our concept and the implementation of correlation filters for this kind of application. The correlation filters utilise a particular consumption pattern of an electrical appliance to detect the respective appliance in energy readings from smart meters and smart plugs.Lastly, we assess the performance of the correlation filters on the real-world energy consumption dataset GREEND, which provides readings from smart meter data as well as appliance-level measurement equipment. As the results approve, the correlation filters show a good performance for appliances with predictable consumption patterns such as refrigerators, dishwashers, or washing machines. Thus, we propose that future work should evaluate the applicability of correlation filters in appliance diagnosis systems.},
  doi = {10.1109/SmartGridComm.2017.8340730},
  pages = {183--188},
  address = {Piscataway (NJ)},
  month = {10},
  url = {http://mobile.nes.aau.at/publications/klemenjak-2017-Correlation\_Filters.pdf},
  }

• V. S. R. P. Pathuri Bhuvana and A. M. Tonello, “Appliance Load Disaggregation based on Maximum A-Posterior Particle Filter (MAP-PF),” in 2017 IEEE International Conference on Smart Grid Communications (SmartGridComm), Piscataway (NJ): IEEE, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  A fine-grained and real-time energy data provided by the smart meters is one of the main facilitators for achieving improved energy efficiency in future smart grids. Further disaggregating the information provided by smart meters into energy consumption of individual appliances, often referred as appliance load disaggregation (ALD), can provide valuable information.In this paper, we propose a non-intrusive ALD based on the maximum a-posterior particle filter (MAP-PF). The proposed non-intrusive ALD allows to identify state of an appliance by utilizing the probabilistic appliance models and the aggregatedpower of the household, measured by a single smart meter. A combination of multi-state appliances modeled by hidden Markov models and the corresponding aggregated power is modeled by a factorial hidden Markov model (FHMM). The FHMM models the household as a finite state machine with discrete states. Theproposed MAP-PF based ALD uses the principles of particle filter to infer the maximum probable state of the household and subsequently, the state of each appliance at a given time under the Viterbi framework. Furthermore, we evaluated the proposed method using a simulated and well known real-world data sets incomparison with the PF based ALD. In our simulation results, the proposed method achieves similar or higher estimation accuracy with significantly less computational complexity compared to the PF based ALD method

  @incollection{0f4de0c760c140b30160c6cce708024e,
  author = {Pathuri Bhuvana, Venkata Satya Rajendra Pr and Tonello, Andrea M.},
  title = {{Appliance Load Disaggregation based on Maximum A-Posterior Particle Filter (MAP-PF)}},
  booktitle = {2017 IEEE International Conference on Smart Grid Communications (SmartGridComm)},
  publisher = {IEEE},
  year = {2017},
  abstract = {A fine-grained and real-time energy data provided by the smart meters is one of the main facilitators for achieving improved energy efficiency in future smart grids. Further disaggregating the information provided by smart meters into energy consumption of individual appliances, often referred as appliance load disaggregation (ALD), can provide valuable information.In this paper, we propose a non-intrusive ALD based on the maximum a-posterior particle filter (MAP-PF). The proposed non-intrusive ALD allows to identify state of an appliance by utilizing the probabilistic appliance models and the aggregatedpower of the household, measured by a single smart meter. A combination of multi-state appliances modeled by hidden Markov models and the corresponding aggregated power is modeled by a factorial hidden Markov model (FHMM). The FHMM models the household as a finite state machine with discrete states. Theproposed MAP-PF based ALD uses the principles of particle filter to infer the maximum probable state of the household and subsequently, the state of each appliance at a given time under the Viterbi framework. Furthermore, we evaluated the proposed method using a simulated and well known real-world data sets incomparison with the PF based ALD. In our simulation results, the proposed method achieves similar or higher estimation accuracy with significantly less computational complexity compared to the PF based ALD method},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5386-4055-5},
  url = {http://sgc2017.ieee-smartgridcomm.org/program},
  }

• F. Passerini and A. M. Tonello, “Full Duplex Power Line Communication Modems for Network Sensing,” in 2017 IEEE International Conference on Smart Grid Communications (SmartGridComm), Piscataway (NJ): IEEE, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Power distribution networks have peculiar characteristics that make sensing and control challenging. The topological structure is complex and often variable; different type of faults are common and often cause undetectable damage to the network; the power cables of aerial and especially those of buried lines are subject to aging that eventually causes degradation in power and signal distribution. In this paper, we show different techniques to monitor all these characteristics by leveraging the recently investigated in-band full duplex power line technology.As an explanatory example, we show simulation results about monitoring of the cable aging phenomenon. We also present a technique that can be used to precisely localize the detected faults or cable imperfections.

  @incollection{0f4de0c760c140b30160c6ca09880236,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Full Duplex Power Line Communication Modems for Network Sensing}},
  booktitle = {2017 IEEE International Conference on Smart Grid Communications (SmartGridComm)},
  publisher = {IEEE},
  year = {2017},
  abstract = {Power distribution networks have peculiar characteristics that make sensing and control challenging. The topological structure is complex and often variable; different type of faults are common and often cause undetectable damage to the network; the power cables of aerial and especially those of buried lines are subject to aging that eventually causes degradation in power and signal distribution. In this paper, we show different techniques to monitor all these characteristics by leveraging the recently investigated in-band full duplex power line technology.As an explanatory example, we show simulation results about monitoring of the cable aging phenomenon. We also present a technique that can be used to precisely localize the detected faults or cable imperfections.},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5386-4055-5},
  url = {http://sgc2017.ieee-smartgridcomm.org/program},
  }

• B. Salamat and A. M. Tonello, “Altitude and Attitude Tracking of a Quadrotor Helicopter UAV Using a Novel Evolutionary Feedback Controller,” in International Conference on Smart Systems and Technologies (SST) 2017, Piscataway (NJ): IEEE, 2017, p. 327–331. doi:10.1109/SST.2017.8188719
  [BibTeX] [Abstract] [Download PDF]
  

  Although there are classical methods for designing afeedback controller, modern techniques make use of the power ofmulti objective optimization algorithms. In this paper, we proposea novel evolutionary feedback controller (EFC) for altitude andattitude tracking of a quadrotor helicopter unmanned aerialvehicle (UAV). In particular, an improved genetic algorithm isused to adapt the coefficients of the feedback control gains.Contrary to classical approaches in control theory, the EFCmethodology can be used in both nonlinear and linear systems.Furthermore, an inertial navigation system (INS) and globalpositioning system (GPS) are embedded in the UAV to provideinputs to the controller.Index Terms—Unmanned aerial vehicle (UAV), Evolutionaryfeedback controller (EFC), improved genetic algorithm (IGA),inertial navigation system (INS), global positioning system (GPS).

  @incollection{0f4de0c760c140b30160c656877b01b4,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Altitude and Attitude Tracking of a Quadrotor Helicopter UAV Using a Novel Evolutionary Feedback Controller}},
  booktitle = {International Conference on Smart Systems and Technologies (SST) 2017},
  publisher = {IEEE},
  year = {2017},
  abstract = {Although there are classical methods for designing afeedback controller, modern techniques make use of the power ofmulti objective optimization algorithms. In this paper, we proposea novel evolutionary feedback controller (EFC) for altitude andattitude tracking of a quadrotor helicopter unmanned aerialvehicle (UAV). In particular, an improved genetic algorithm isused to adapt the coefficients of the feedback control gains.Contrary to classical approaches in control theory, the EFCmethodology can be used in both nonlinear and linear systems.Furthermore, an inertial navigation system (INS) and globalpositioning system (GPS) are embedded in the UAV to provideinputs to the controller.Index Terms—Unmanned aerial vehicle (UAV), Evolutionaryfeedback controller (EFC), improved genetic algorithm (IGA),inertial navigation system (INS), global positioning system (GPS).},
  doi = {10.1109/SST.2017.8188719},
  pages = {327--331},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5386-2101-1},
  url = {http://ieeexplore.ieee.org/document/8188719/},
  }

• S. Shaikh and A. M. Tonello, “EM Lens-clustering Based Direction of Arrival Estimation in Massive Antenna Systems,” in International Conference on Smart Systems and Technologies (SST) 2017, Piscataway (NJ): IEEE, 2017, p. 127–131. doi:10.1109/SST.2017.8188682
  [BibTeX] [Abstract] [Download PDF]
  

  Direction of arrival (DoA) estimation in the massive antenna systems with reduced hardware and signal processing complexity is a challenging task. To address the issue, this paper presents an approach to estimate the DoA in a large number of antennas system combined with an electromagnetic (EM) lens. An EM lens has the ability to focus the received signal energy as a function of the angle of arrival (AoA) to a small subset/area of the antenna array at the base station (BS). Thus, it helps to estimate the DoA efficiently while minimizing the number of radio frequency (RF) chains and the associated signal processing costs. Moreover, by defining a cluster over a group of closely spaced subsets, the computational efforts of the DoA estimation algorithm can be further reduced.

  @incollection{0f4de0c760c140b30160c650c863019b,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{EM Lens-clustering Based Direction of Arrival Estimation in Massive Antenna Systems}},
  booktitle = {International Conference on Smart Systems and Technologies (SST) 2017},
  publisher = {IEEE},
  year = {2017},
  abstract = {Direction of arrival (DoA) estimation in the massive antenna systems with reduced hardware and signal processing complexity is a challenging task. To address the issue, this paper presents an approach to estimate the DoA in a large number of antennas system combined with an electromagnetic (EM) lens. An EM lens has the ability to focus the received signal energy as a function of the angle of arrival (AoA) to a small subset/area of the antenna array at the base station (BS). Thus, it helps to estimate the DoA efficiently while minimizing the number of radio frequency (RF) chains and the associated signal processing costs. Moreover, by defining a cluster over a group of closely spaced subsets, the computational efforts of the DoA estimation algorithm can be further reduced.},
  doi = {10.1109/SST.2017.8188682},
  pages = {127--131},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5386-2101-1},
  url = {http://ieeexplore.ieee.org/document/8188682/},
  }

• I. Haider and B. Rinner, “Private Space Monitoring with SoC-based Smart Cameras,” in Proceedings of the 14th IEEE International Conference on Mobile Ad Hoc and Sensor Systems, Piscataway (NJ): IEEE, 2017, p. 19–27. doi:10.1109/MASS.2017.15
  [BibTeX] [Abstract] [Download PDF]
  

  Cameras and other sensors are increasingly deployed for private space monitoring applications such as home monitoring, assisted/enhanced living and child monitoring. Since these cameras capture highly sensitive information and transfer it over public communication infrastructures, security and privacy is a major concern. This work presents a secure camera device along with a secure data delivery and archiving solution for private space monitoring applications using untrusted public cloud storage services. Integrity, authenticity, confidentiality and freshness of captured data are protected on-board using physically unclonable functions (PUF). The protection holds true for entire lifetime of the data until it is consumed by an authorized end-user.Experimental results obtained from our Zynq7010 SoCbased prototype shows that the device is able to secure videos with 30 frames per second at 640480 resolution with marginal overhead. The presented solution is not limited to visual sensing but can be applied to a wide range of pervasive sensing and secure data delivery scenarios.

  @incollection{0f4de0c95f975b6a015fa018e0d5040b,
  author = {Haider, Ihtesham and Rinner, Bernhard},
  title = {{Private Space Monitoring with SoC-based Smart Cameras}},
  booktitle = {Proceedings of the 14th IEEE International Conference on Mobile Ad Hoc and Sensor Systems},
  publisher = {IEEE},
  year = {2017},
  abstract = {Cameras and other sensors are increasingly deployed for private space monitoring applications such as home monitoring, assisted/enhanced living and child monitoring. Since these cameras capture highly sensitive information and transfer it over public communication infrastructures, security and privacy is a major concern. This work presents a secure camera device along with a secure data delivery and archiving solution for private space monitoring applications using untrusted public cloud storage services. Integrity, authenticity, confidentiality and freshness of captured data are protected on-board using physically unclonable functions (PUF). The protection holds true for entire lifetime of the data until it is consumed by an authorized end-user.Experimental results obtained from our Zynq7010 SoCbased prototype shows that the device is able to secure videos with 30 frames per second at 640480 resolution with marginal overhead. The presented solution is not limited to visual sensing but can be applied to a wide range of pervasive sensing and secure data delivery scenarios.},
  doi = {10.1109/MASS.2017.15},
  pages = {19--27},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5386-2323-7},
  url = {http://ieeexplore.ieee.org/xpl/conhome.jsp?reload=true\&punumber=1001499},
  }

• M. Rappaport and C. Bettstetter, “Coordinated Recharging of Mobile Robots during Exploration,” in Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Piscataway (NJ): IEEE, 2017, p. 6809–6816. doi:10.1109/IROS.2017.8206600
  [BibTeX] [Abstract] [Download PDF]
  

  Mobile robots in explorer missions need to charge their batteries from time to time. Different policies for coordinated recharging in teams of robots are evaluated.

  @incollection{0f4de0c75ffcfd8a015ffda2076100e2,
  author = {Rappaport, Micha and Bettstetter, Christian},
  title = {{Coordinated Recharging of Mobile Robots during Exploration}},
  booktitle = {Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
  publisher = {IEEE},
  year = {2017},
  abstract = {Mobile robots in explorer missions need to charge their batteries from time to time. Different policies for coordinated recharging in teams of robots are evaluated.},
  doi = {10.1109/IROS.2017.8206600},
  pages = {6809--6816},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-5386-2681-8},
  url = {http://ieeexplore.ieee.org/document/8206600/},
  }

• F. Passerini and A. M. Tonello, “Advanced Grid Diagnostics Enabled by PLC for Sensing,” in Workshop on Power Line Communications 2017, , 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Nowadays Power Line Communications (PLC) is an established and consolidated technology for communication in smart grids. Although there is always space for enhancements, the power line channel has been widely investigated and a considerable amount of scientific research has led the development of very performing communication solutions. For this reason, in the last years the research efforts about PLC have started moving from pure wired communications to other applications. One of these is using the power line modems (PLM) as network sensors. This means that PLM can not only be used for data transmission, but also to actively monitor the network and provide valuable information about its state and possible anomalies.Some recent papers [1], [2], [3], [4] have shown that continuously monitoring the power line channel response can be used to detect and localize a fault, but also to monitor the cable degradation. In particular, [1] focuses on single-ended measurements, i.e. measuring the echo channel response of a single modem. On the other side, [3], [4] focus on double-ended measurements, i.e. measuring the channel response between two communicating modems. Other techniques based either on single-ended or double-ended measurement have demonstrated that PLM can be used to identify and track the topology of a power line network[5], [6], [7], [8].In this paper, we introduce the possibility of exploiting at the same time both single-ended and double-ended measurements for all the aforementioned diagnostic tasks. This possibility is given by the in-band full duplex (IBFD) technology, which has recently been introduced for PLC. With this technology, PLM modems can at the same time sense the echo response of the transmitted signal and measure the channel response of a signal coming from a far end [9]. The fusion of this double information enhances the diagnostic capability of each communicating node, merging both the advantages of single-ended and double-ended measurements. In fact, single-ended measurements allow good diagnostics of the network part that is close to the transmitting PLM over a radial area, while their efficacy decreases for diagnostic operations in distant network parts.Conversely, double-ended measurements provide the best results for diagnostics in or around the main path connecting the two modems involved, while their performance decreases elsewhere. With IBFD is hence possible not only to sense the electrical properties of a power line network in a radial area around the transmitting PLM, but also to enhance the sensing capability in one direction, based on the position of the second modem. Considering finally many PLM branched to the same network, the sensing capability can be enhanced in different directions at different times, increasing the self diagnostic capabilities of the network.

  @incollection{0f4de0c760c140b30160c6bac4c401f8,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Advanced Grid Diagnostics Enabled by PLC for Sensing}},
  booktitle = {Workshop on Power Line Communications 2017},
  year = {2017},
  abstract = {Nowadays Power Line Communications (PLC) is an established and consolidated technology for communication in smart grids. Although there is always space for enhancements, the power line channel has been widely investigated and a considerable amount of scientific research has led the development of very performing communication solutions. For this reason, in the last years the research efforts about PLC have started moving from pure wired communications to other applications. One of these is using the power line modems (PLM) as network sensors. This means that PLM can not only be used for data transmission, but also to actively monitor the network and provide valuable information about its state and possible anomalies.Some recent papers [1], [2], [3], [4] have shown that continuously monitoring the power line channel response can be used to detect and localize a fault, but also to monitor the cable degradation. In particular, [1] focuses on single-ended measurements, i.e. measuring the echo channel response of a single modem. On the other side, [3], [4] focus on double-ended measurements, i.e. measuring the channel response between two communicating modems. Other techniques based either on single-ended or double-ended measurement have demonstrated that PLM can be used to identify and track the topology of a power line network[5], [6], [7], [8].In this paper, we introduce the possibility of exploiting at the same time both single-ended and double-ended measurements for all the aforementioned diagnostic tasks. This possibility is given by the in-band full duplex (IBFD) technology, which has recently been introduced for PLC. With this technology, PLM modems can at the same time sense the echo response of the transmitted signal and measure the channel response of a signal coming from a far end [9]. The fusion of this double information enhances the diagnostic capability of each communicating node, merging both the advantages of single-ended and double-ended measurements. In fact, single-ended measurements allow good diagnostics of the network part that is close to the transmitting PLM over a radial area, while their efficacy decreases for diagnostic operations in distant network parts.Conversely, double-ended measurements provide the best results for diagnostics in or around the main path connecting the two modems involved, while their performance decreases elsewhere. With IBFD is hence possible not only to sense the electrical properties of a power line network in a radial area around the transmitting PLM, but also to enhance the sensing capability in one direction, based on the position of the second modem. Considering finally many PLM branched to the same network, the sensing capability can be enhanced in different directions at different times, increasing the self diagnostic capabilities of the network.},
  month = {9},
  url = {https://wsplc2017.fel.cvut.cz/program.php},
  }

• D. Righini and A. M. Tonello, “EMI in PLC: New Results on Predicting Transmission and Radiation Effects,” in Workshop on Power Line Communications 2017, , 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Power distribution grids are exploited by Power Line Communication (PLC) technology to convey information in the context of Smart Grids and In-Home environments [1]. Their feature of using the existing cable infrastructure has the advantage for utilities of being proprietary and for residential users of granting wider range and possibly higher coverage compared to wireless technologies. On the other hand, the structure of such power line networks causes a relevant part of the high frequency signals traveling through them to be radiated instead of being conducted. This induce not only electromagnetic interference (EMI) with devices located next to power line cables, but also a consistent deterioration of the signal integrity.Although this phenomenon is known by the PLC community since its foundation, only few research papers deal with it [2], [3]. Since existing PLC channel models do not take into account losses due to radiation phenomena, this paper responds to the need of developing accurate network simulators.

  @incollection{0f4de0c760c140b30160c6bf6e020221,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{EMI in PLC: New Results on Predicting Transmission and Radiation Effects}},
  booktitle = {Workshop on Power Line Communications 2017},
  year = {2017},
  abstract = {Power distribution grids are exploited by Power Line Communication (PLC) technology to convey information in the context of Smart Grids and In-Home environments [1]. Their feature of using the existing cable infrastructure has the advantage for utilities of being proprietary and for residential users of granting wider range and possibly higher coverage compared to wireless technologies. On the other hand, the structure of such power line networks causes a relevant part of the high frequency signals traveling through them to be radiated instead of being conducted. This induce not only electromagnetic interference (EMI) with devices located next to power line cables, but also a consistent deterioration of the signal integrity.Although this phenomenon is known by the PLC community since its foundation, only few research papers deal with it [2], [3]. Since existing PLC channel models do not take into account losses due to radiation phenomena, this paper responds to the need of developing accurate network simulators.},
  month = {9},
  url = {https://wsplc2017.fel.cvut.cz/program.php},
  }

• F. Marcuzzi and A. M. Tonello, “Smart Routing for Improved PLC Backhauling of the Radio Access Network,” in Workshop on Power Line Communications 2017, , 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Nowadays, the population of connected cellular devices around the world is growing exponentially. In order to provide high-quality and seamless coverage, small-cell networks are being employed by telecommunication operators to increase spatial fragmentation and the reuse of cellular frequencies [1]. The downside of this practice lies in the necessity for an additional step in the network's hierarchy, namely the back-haul section needed between the small cells and the Radio Access Network's (RAN) hub, located in the macro-cell's antenna.Supporting the customers traffic requirements, reliability, easy deployment and maintenance and not exploiting end-user spectrum to avoid interference are basic ground rules to keep in mind when designing this back-haul section. Naturally, specific needs pertain to different application scenarios, which is the reason why there is no unique method to design an infrastructure apt to transfer data from small-cells to the RAN's hub. Both wired and wireless solutions are currently employed for this application, although neither of them offer the universally optimal solution, as there is a trade of between installation/maintenance costs, data rate capabilities and environmental factors to consider. The power-line infrastructure offers an interesting asset for this application because of its wide-spread reach of devices.

  @incollection{0f4de0c760c140b30160c6bd242e020d,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{Smart Routing for Improved PLC Backhauling of the Radio Access Network}},
  booktitle = {Workshop on Power Line Communications 2017},
  year = {2017},
  abstract = {Nowadays, the population of connected cellular devices around the world is growing exponentially. In order to provide high-quality and seamless coverage, small-cell networks are being employed by telecommunication operators to increase spatial fragmentation and the reuse of cellular frequencies [1]. The downside of this practice lies in the necessity for an additional step in the network\'s hierarchy, namely the back-haul section needed between the small cells and the Radio Access Network\'s (RAN) hub, located in the macro-cell\'s antenna.Supporting the customers traffic requirements, reliability, easy deployment and maintenance and not exploiting end-user spectrum to avoid interference are basic ground rules to keep in mind when designing this back-haul section. Naturally, specific needs pertain to different application scenarios, which is the reason why there is no unique method to design an infrastructure apt to transfer data from small-cells to the RAN\'s hub. Both wired and wireless solutions are currently employed for this application, although neither of them offer the universally optimal solution, as there is a trade of between installation/maintenance costs, data rate capabilities and environmental factors to consider. The power-line infrastructure offers an interesting asset for this application because of its wide-spread reach of devices.},
  month = {9},
  url = {https://wsplc2017.fel.cvut.cz/program.php},
  }

• S. Shaikh and A. M. Tonello, “Complexity Reduced Direction Finding Massive Antenna System Using EM Lens,” in Workshop on Dependable Wireless Communications and Localization for the IoT 2017, Brussels: COST Association – European Cooperation in Science and Technology, 2017, p. 1–3.
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we propose a low complexity based direction finding approach in an electromagnetic (EM) lens assisted massive antenna system. The EM lens provide the advantage of focusing the received signal energy on a small area/subset of the antennas array at the base station (BS). Thus,by taking the advantage of this focusing ability, we propose a complexity reduced sum and difference pattern technique to find the direction of arrival (DoA) of the received radio frequency (RF) signals. The proposed technique is simple and implemented in RF.

  @incollection{0f4de0c760c140b30160c697f6ff01de,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{Complexity Reduced Direction Finding Massive Antenna System Using EM Lens}},
  booktitle = {Workshop on Dependable Wireless Communications and Localization for the IoT 2017},
  publisher = {COST Association - European Cooperation in Science and Technology},
  year = {2017},
  abstract = {In this paper, we propose a low complexity based direction finding approach in an electromagnetic (EM) lens assisted massive antenna system. The EM lens provide the advantage of focusing the received signal energy on a small area/subset of the antennas array at the base station (BS). Thus,by taking the advantage of this focusing ability, we propose a complexity reduced sum and difference pattern technique to find the direction of arrival (DoA) of the received radio frequency (RF) signals. The proposed technique is simple and implemented in RF.},
  pages = {1--3},
  address = {Brussels},
  month = {9},
  url = {https://www.tugraz.at/fileadmin/user\_upload/Projekte/Dependablethings/IRACON\_WS\_17/16\_Shaikh.pdf},
  }

• W. Elmenreich, T. Khatib, and A. Monacchi, “Smart Microgrids: Optimizing Local Resources toward Increased Efficiency and a More Sustainable Growth,” in Business, Management and Economics » “Research and Development Evolving Trends and Practices – Towards Human, Institutional and Economic Sectors Growth”, S. Maad, Ed., Vukovar: Intech, 2017, p. 53–72. doi:10.5772/intechopen.69369
  [BibTeX] [Abstract] [Download PDF]
  

  Smart microgrids are a possibility to reduce complexity by performing local optimization of power production, consumption and storage. We do not envision smart microgrids to be island solutions but rather to be integrated into a larger network of microgrids that form the future energy grid. Operating and controlling a smart microgrid involves optimization for using locally generated energy and to provide feedback to the user when and how to use devices. This chapter shows how these issues can be addressed starting with measuring and modeling energy consumption patterns by collecting an energy consumption dataset at device level. The open dataset allows to extract typical usage patterns and subsequently to model test scenarios for energy management algorithms. Section 3 discusses means for analyzing measured data and for providing detailed feedback about energy consumption to increase customers’ energy awareness. Section 4 shows how renewable energy sources can be integrated in a smart microgrid and how energy production can be accurately predicted. Section 5 introduces a self-organizing local energy system that autonomously coordinates production and consumption via an agent-based energy auction system. The final section discusses how the proposed methods contribute to sustainable growth and gives an outlook to future research.

  @incollection{0f4de0c7610347c00161049fe8280337,
  author = {Elmenreich, Wilfried and Khatib, Tamer and Monacchi, Andrea},
  title = {{Smart Microgrids: Optimizing Local Resources toward Increased Efficiency and a More Sustainable Growth}},
  booktitle = { Business, Management and Economics » "Research and Development Evolving Trends and Practices - Towards Human, Institutional and Economic Sectors Growth"},
  publisher = {Intech},
  year = {2017},
  abstract = {Smart microgrids are a possibility to reduce complexity by performing local optimization of power production, consumption and storage. We do not envision smart microgrids to be island solutions but rather to be integrated into a larger network of microgrids that form the future energy grid. Operating and controlling a smart microgrid involves optimization for using locally generated energy and to provide feedback to the user when and how to use devices. This chapter shows how these issues can be addressed starting with measuring and modeling energy consumption patterns by collecting an energy consumption dataset at device level. The open dataset allows to extract typical usage patterns and subsequently to model test scenarios for energy management algorithms. Section 3 discusses means for analyzing measured data and for providing detailed feedback about energy consumption to increase customers’ energy awareness. Section 4 shows how renewable energy sources can be integrated in a smart microgrid and how energy production can be accurately predicted. Section 5 introduces a self-organizing local energy system that autonomously coordinates production and consumption via an agent-based energy auction system. The final section discusses how the proposed methods contribute to sustainable growth and gives an outlook to future research.},
  doi = {10.5772/intechopen.69369},
  editor = {Soha Maad},
  pages = {53--72},
  address = {Vukovar},
  month = {9},
  isbn = {978-953-51-3479-4},
  url = {https://www.intechopen.com/books/research-and-development-evolving-trends-and-practices-towards-human-institutional-and-economic-sectors-growth/smart-microgrids-optimizing-local-resources-toward-increased-efficiency-and-a-more-sustainable-growt},
  }

• M. Girotto and A. M. Tonello, “Adaptive Zero Padded CB-FMT for LTE Uplink Transmission in the High Mobility Scenario,” in 25th European Signal Processing Conference (EUSIPCO) 2017, IEEE, 2017, p. 878–882. doi:10.23919/EUSIPCO.2017.8081333
  [BibTeX] [Abstract] [Download PDF]
  

  LTE is the most recent standard for the mobile cellular communication. To achieve high speed communications, multi-carrier modulations have been adopted both for the downlink and the uplink. In the LTE downlink, OFDMA (the multi-user version of OFDM) has been chosen. The LTE uplink uses instead SC-FDMA modulation, an OFDM alternative. In this work, the use of CB-FMT, jointly with SC-FDMA, is analyzed in the high mobility scenario. Numerical results show that CB-FMT outperforms SC-FDMA in several cases. Thus, an adaptive implementation architecture that allows to flexibly choose the modulation scheme is proposed to maximize the achievable rate. Furthermore, for compliance with existing LTE parameters, frequency domain zero padded CB-FMT is proposed, and the problem of designing optimal capacity wise waveforms is considered.

  @incollection{0f4de0c760c140b30160c64a8ee3017e,
  author = {Girotto, Mauro and Tonello, Andrea M.},
  title = {{Adaptive Zero Padded CB-FMT for LTE Uplink Transmission in the High Mobility Scenario}},
  booktitle = {25th European Signal Processing Conference (EUSIPCO) 2017},
  publisher = {IEEE},
  year = {2017},
  abstract = {LTE is the most recent standard for the mobile cellular communication. To achieve high speed communications, multi-carrier modulations have been adopted both for the downlink and the uplink. In the LTE downlink, OFDMA (the multi-user version of OFDM) has been chosen. The LTE uplink uses instead SC-FDMA modulation, an OFDM alternative. In this work, the use of CB-FMT, jointly with SC-FDMA, is analyzed in the high mobility scenario. Numerical results show that CB-FMT outperforms SC-FDMA in several cases. Thus, an adaptive implementation architecture that allows to flexibly choose the modulation scheme is proposed to maximize the achievable rate. Furthermore, for compliance with existing LTE parameters, frequency domain zero padded CB-FMT is proposed, and the problem of designing optimal capacity wise waveforms is considered.},
  doi = {10.23919/EUSIPCO.2017.8081333},
  pages = {878--882},
  month = {8},
  isbn = {978-0-9928626-7-1},
  url = {http://ieeexplore.ieee.org/document/8081333/},
  }

• V. S. R. P. Pathuri Bhuvana and A. M. Tonello, “Distributed Object Tracking Based on Information Weighted UAV Selection with Priory Objects,” in 25th European Signal Processing Conference (EUSIPCO) 2017, IEEE, 2017, p. 2046–20150. doi:10.23919/EUSIPCO.2017.8081569
  [BibTeX] [Abstract] [Download PDF]
  

  In this work, we propose a distributed cubatureinformation filter based multi-object tracking method with aninformation weighted selection for unmanned aerial vehicle (UAV)networks. In an UAV network, multiple UAVs can observemultiple objects in the region of interest. Further, the UAVs canexchange the objects local information among themselves andfuse them together to obtain the global state of the objects. Asthe number of UAVs in the network increases, the informationexchange among the UAVs suffers from scalability, bandwidthand energy limitations. Thus, it is usually desirable to allow onlya desired number of UAVs with highly relevant information toparticipate in the information exchange. In our approach, theinnovation vector within the information filtering framework isused to calculate the amount of information associated witheach UAV. Further, a threshold based selection mechanism isproposed to facilitate the UAVs to take independent decisions onwhether to participate in the information exchange or not. In theproposed method, the UAVs take the decision to participate in theinformation exchange based on the information associated with adynamic subset of objects known as priory objects while keepingthe total number of information exchanges in the network to adesired number (on average).

  @incollection{0f4de0c760c140b30160c645257f0161,
  author = {Pathuri Bhuvana, Venkata Satya Rajendra Pr and Tonello, Andrea M.},
  title = {{Distributed Object Tracking Based on Information Weighted UAV Selection with Priory Objects}},
  booktitle = {25th European Signal Processing Conference (EUSIPCO) 2017},
  publisher = {IEEE},
  year = {2017},
  abstract = {In this work, we propose a distributed cubatureinformation filter based multi-object tracking method with aninformation weighted selection for unmanned aerial vehicle (UAV)networks. In an UAV network, multiple UAVs can observemultiple objects in the region of interest. Further, the UAVs canexchange the objects local information among themselves andfuse them together to obtain the global state of the objects. Asthe number of UAVs in the network increases, the informationexchange among the UAVs suffers from scalability, bandwidthand energy limitations. Thus, it is usually desirable to allow onlya desired number of UAVs with highly relevant information toparticipate in the information exchange. In our approach, theinnovation vector within the information filtering framework isused to calculate the amount of information associated witheach UAV. Further, a threshold based selection mechanism isproposed to facilitate the UAVs to take independent decisions onwhether to participate in the information exchange or not. In theproposed method, the UAVs take the decision to participate in theinformation exchange based on the information associated with adynamic subset of objects known as priory objects while keepingthe total number of information exchanges in the network to adesired number (on average).},
  doi = {10.23919/EUSIPCO.2017.8081569},
  pages = {2046--20150},
  month = {8},
  url = {http://ieeexplore.ieee.org/document/8081569/},
  }

• C. Klemenjak and W. Elmenreich, “YaY – An Open-Hardware Energy Measurement System for Feedback and Appliance Detection based on the Arduino Platform,” in 13th Workshop on Intelligent Solutions in Embedded Systems (WISES 2017), , 2017, p. 1–8. doi:10.1109/WISES.2017.7986924
  [BibTeX] [Abstract] [Download PDF]
  

  To analyse user behaviour and energy consumption data in contemporary and future households, we need to monitor electrical appliance features as well as ambient appliance features.For this purpose, a distributed measurement system is required, which measures the entire power consumption of the household, the power consumption of selected household appliances, and the effect of these appliances on their environment.In this paper we present a distributed measurement system that records and monitors electrical household appliances. Our low-cost measurement system integrates the YaY smart meter, a set of smart plugs, and several networked ambient sensors.In conjunction with energy advisor tools the presented measurement system provides an efficient low-cost alternative to commercial energy monitoring systems by surpassing them with machine learning techniques, appliance identification methods, and applications based on load disaggregation.

  @incollection{0f4de0c75ce4e400015cee107f6f0242,
  author = {Klemenjak, Christoph and Elmenreich, Wilfried},
  title = {{YaY - An Open-Hardware Energy Measurement System for Feedback and Appliance Detection based on the Arduino Platform}},
  booktitle = {13th Workshop on Intelligent Solutions in Embedded Systems (WISES 2017) },
  year = {2017},
  abstract = {To analyse user behaviour and energy consumption data in contemporary and future households, we need to monitor electrical appliance features as well as ambient appliance features.For this purpose, a distributed measurement system is required, which measures the entire power consumption of the household, the power consumption of selected household appliances, and the effect of these appliances on their environment.In this paper we present a distributed measurement system that records and monitors electrical household appliances. Our low-cost measurement system integrates the YaY smart meter, a set of smart plugs, and several networked ambient sensors.In conjunction with energy advisor tools the presented measurement system provides an efficient low-cost alternative to commercial energy monitoring systems by surpassing them with machine learning techniques, appliance identification methods, and applications based on load disaggregation.},
  doi = {10.1109/WISES.2017.7986924},
  pages = {1--8},
  month = {7},
  isbn = {978-1-5386-1157-9},
  url = {https://mobile.aau.at/publications/klemenjak-2017\_YaY\_An\_Open-Hardware\_Energy\_Measurement\_System.pdf},
  }

• M. Jungmeier, F. Rauch, R. Hübner, and W. Elmenreich, “Aporetische Konflikte – Lernpotenziale im Bereich Bildung für nachhaltige Entwicklung Illustrationen am Beispiel nachhaltiger Regionalentwicklung ,” SOCIENCE – Journal of Science-Society Interfaces, vol. 1, p. 57–63, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Nachhaltige Entwicklung geht oft mit Konflikten und Dilemmata einher. Dabei spielen Aporien, also Konflikte, die systemlogisch nicht aufgelöst werden können, eine besondere Rolle. In diesem Artikel vertreten wir die Annahme, dass eine nachhaltige Entwicklung im Widerspruch zu derzeit praktizierten und als nicht nachhaltig eingestuften Entwicklungspfaden steht. Einige dieser Widersprüche weisen Merkmale aporetischer Konflikte auf. Gerade diese enthalten große Lern- und Gestaltungspotenziale, die in der universitären Lehre vermittelt werden sollen. Im Rahmen einer fakultätsübergreifenden Zusammenarbeit bietet die Alpen-Adria-Universität in Klagenfurt ein Wahlfachmodul „Nachhaltige Entwicklung“ an. Der Artikel illustriert am Beispiel nachhaltiger Regionalentwicklung aus diesem Lehrveranstaltungsmodul, welche Widersprüche und aporetische Konflikte im Zusammenhang mit Transformationsprozessen zu erwarten bzw. festzustellen sind. Diese werden aus unterschiedlichen disziplinären Perspektiven betrachtet und in Folge identifiziert, beschrieben und eingeordnet. Abschließend werden Potenziale für Bildungsprozesse identifiziert und reflektiert.

  @article{0f4de0c47aa2c75c017aa4a225be00c4,
  author = {Jungmeier, Michael and Rauch, Franz and Hübner, Renate and Elmenreich, Wilfried},
  title = {{Aporetische Konflikte – Lernpotenziale im Bereich Bildung für nachhaltige Entwicklung Illustrationen am Beispiel nachhaltiger Regionalentwicklung }},
  journal = {SOCIENCE - Journal of Science-Society Interfaces},
  year = {2017},
  abstract = {Nachhaltige Entwicklung geht oft mit Konflikten und Dilemmata einher. Dabei spielen Aporien, also Konflikte, die systemlogisch nicht aufgelöst werden können, eine besondere Rolle. In diesem Artikel vertreten wir die Annahme, dass eine nachhaltige Entwicklung im Widerspruch zu derzeit praktizierten und als nicht nachhaltig eingestuften Entwicklungspfaden steht. Einige dieser Widersprüche weisen Merkmale aporetischer Konflikte auf. Gerade diese enthalten große Lern- und Gestaltungspotenziale, die in der universitären Lehre vermittelt werden sollen. Im Rahmen einer fakultätsübergreifenden Zusammenarbeit bietet die Alpen-Adria-Universität in Klagenfurt ein Wahlfachmodul „Nachhaltige Entwicklung“ an. Der Artikel illustriert am Beispiel nachhaltiger Regionalentwicklung aus diesem Lehrveranstaltungsmodul, welche Widersprüche und aporetische Konflikte im Zusammenhang mit Transformationsprozessen zu erwarten bzw. festzustellen sind. Diese werden aus unterschiedlichen disziplinären Perspektiven betrachtet und in Folge identifiziert, beschrieben und eingeordnet. Abschließend werden Potenziale für Bildungsprozesse identifiziert und reflektiert.},
  volume = {1},
  pages = {57--63},
  month = {7},
  url = {https://openjournals.wu.ac.at/ojs/index.php/socience/article/view/183/136},
  }

• P. Grippa, D. Behrens, C. Bettstetter, and F. Wall, “Job Selection in a Network of Autonomous UAVs for Delivery of Goods,” in Proceedings of Robotics: Science and Systems XIII, N. Amato, S. Srinivasa, N. Ayanian, and S. Kuindersma, Eds., , 2017. doi:10.15607/RSS.2017.XIII.018
  [BibTeX] [Abstract] [Download PDF]
  

  This article analyzes two classes of job selection policies that control how a network of autonomous aerial vehicles delivers goods from depots to customers. Customer requests(jobs) occur according to a spatio-temporal stochastic process not known by the system. If job selection uses a policy in which the first job (FJ) is served first, the system may collapse to instability by removing just one vehicle. Policies that serve the nearest job (NJ) first show such threshold behavior only in some settings and can be implemented in a distributed manner. The timing of job selection has significant impact on delivery time and stability for NJ while it has no impact for FJ. Based on these findings we introduce a methodological approach for decision making support to set up and operate such a system, taking into account the trade-off between monetary cost and service quality.In particular, we compute a lower bound for the infrastructure expenditure required to achieve a certain expected delivery time.The approach includes three time horizons: long-term decisions on the number of depots to deploy in the service area, midterm decisions on the number of vehicles to use, and short-term decisions on the policy to operate the vehicles.

  @incollection{0f4de0c95ec786e8015ec8de884900b4,
  author = {Grippa, Pasquale and Behrens, Doris and Bettstetter, Christian and Wall, Friederike},
  title = {{Job Selection in a Network of Autonomous UAVs for Delivery of Goods}},
  booktitle = {Proceedings of Robotics: Science and Systems XIII},
  year = {2017},
  abstract = {This article analyzes two classes of job selection policies that control how a network of autonomous aerial vehicles delivers goods from depots to customers. Customer requests(jobs) occur according to a spatio-temporal stochastic process not known by the system. If job selection uses a policy in which the first job (FJ) is served first, the system may collapse to instability by removing just one vehicle. Policies that serve the nearest job (NJ) first show such threshold behavior only in some settings and can be implemented in a distributed manner. The timing of job selection has significant impact on delivery time and stability for NJ while it has no impact for FJ. Based on these findings we introduce a methodological approach for decision making support to set up and operate such a system, taking into account the trade-off between monetary cost and service quality.In particular, we compute a lower bound for the infrastructure expenditure required to achieve a certain expected delivery time.The approach includes three time horizons: long-term decisions on the number of depots to deploy in the service area, midterm decisions on the number of vehicles to use, and short-term decisions on the policy to operate the vehicles.},
  doi = {10.15607/RSS.2017.XIII.018},
  editor = {Nancy Amato and Siddhartha Srinivasa and Nora Ayanian and Scott Kuindersma},
  month = {7},
  isbn = {978-0-9923747-3-0},
  url = {http://www.roboticsproceedings.org/rss13/index.html},
  }

• M. Jdeed, S. Zhevzhyk, F. Steinkellner, and W. Elmenreich, “Spiderino – A low-cost robot for swarm research and educational purposes,” in 13th Workshop on Intelligent Solutions in Embedded Systems (WISES 2017), , 2017, p. 35–39. doi:10.1109/WISES.2017.7986929
  [BibTeX] [Abstract] [Download PDF]
  

  This paper presents a design for a low-cost research robot based on the small size of the Hexbug Spider toy. Our basic modification replaces the robot head with a 3D-printed adapter, consisting of two parts to provide space for sensors, a larger battery, and a printed circuit board (PCB) with Arduino microcontroller, Wi-Fi module, and motor controller. We address the assembling process of such a robot and the programming using Arduino studio. The presented prototype costs less than 70 Euro, and is suitable for swarm robotic experiments and educational purposes.

  @incollection{0f4de0c95d884da6015d98c01f1f02ba,
  author = {Jdeed, Midhat and Zhevzhyk, Sergii and Steinkellner, Florian and Elmenreich, Wilfried},
  title = {{Spiderino - A low-cost robot for swarm research and educational purposes}},
  booktitle = {13th Workshop on Intelligent Solutions in Embedded Systems (WISES 2017) },
  year = {2017},
  abstract = {This paper presents a design for a low-cost research robot based on the small size of the Hexbug Spider toy. Our basic modification replaces the robot head with a 3D-printed adapter, consisting of two parts to provide space for sensors, a larger battery, and a printed circuit board (PCB) with Arduino microcontroller, Wi-Fi module, and motor controller. We address the assembling process of such a robot and the programming using Arduino studio. The presented prototype costs less than 70 Euro, and is suitable for swarm robotic experiments and educational purposes.},
  doi = {10.1109/WISES.2017.7986929},
  pages = {35--39},
  month = {7},
  isbn = {9781538611579},
  url = {http://mobile.aau.at/publications/jdeed-2017-Spiderino\_low-cost\_robot\_for\_swarm\_research\_and\_educational\_purposes.pdf},
  }

• A. M. Tonello, “Why You Should Consider the Uptake of PLC Tech,” ESI Africa Magazine, iss. 3, p. 34–36, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Power line communication (PLC) technology exploits power lines to convey datasignals. Due to the pervasive deployment of electrical wires, PLC has the potentialto offer data connectivity in a number of scenarios without requiring new oradditional infrastructure.

  @article{0f4de0c75d4fbbb5015d50299bb80017,
  author = {Tonello, Andrea M.},
  title = {{Why You Should Consider the Uptake of PLC Tech}},
  journal = {ESI Africa Magazine},
  year = {2017},
  abstract = {Power line communication (PLC) technology exploits power lines to convey datasignals. Due to the pervasive deployment of electrical wires, PLC has the potentialto offer data connectivity in a number of scenarios without requiring new oradditional infrastructure.},
  number = {3},
  pages = {34--36},
  month = {7},
  url = {http://spintelligentpublishing.com/Digital/ESI-Africa/issue3-2017/index.html},
  }

• S. Ullah, B. Rinner, and L. Marcenaro, “Smart Cameras with onboard Signcryption for Securing IoT Applications,” in Proceedings of the Global IoT Summit, , 2017, p. 1–6.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c95d328fd5015d3597bae20066,
  author = {Ullah, Subhan and Rinner, Bernhard and Marcenaro, Lucio},
  title = {{Smart Cameras with onboard Signcryption for Securing IoT Applications}},
  booktitle = {Proceedings of the Global IoT Summit},
  year = {2017},
  pages = {1--6},
  month = {6},
  isbn = {978-1-5090-5873-0},
  url = {http://ieeexplore.ieee.org/abstract/document/8016279/},
  }

• A. Pittolo and A. M. Tonello, “A Synthetic Statistical MIMO PLC Channel Model Applied to an In-Home Scenario,” IEEE Transactions on Communications, vol. 65, iss. 6, p. 2543–2553, 2017. doi:10.1109/TCOMM.2017.2677938
  [BibTeX] [Abstract] [Download PDF]
  

  This paper proposes a synthetic statistical top-down MIMO power line communications channel model based on a pure phenomenological approach. The basic idea consists of directly synthesizing the experimental channel statistical properties to obtain an extremely compact model that requires a small set of parameters. The model is derived from the analysis of the in-home 2 × 3 MIMO PLC channel data set obtained by the ETSI Specialist Task Force 410 measurement campaign in the band 1.8–100 MHz. The challenge of modeling the channel statistical correlation, exhibited among the frequencies and between the MIMO modes, in compact form is tackled and it is shown that a small set of parameters can be used to reconstruct such a correlation behavior. The model is validated and compared to the measured channels, showing a good agreement in terms of average channel gain, root-mean-square delay spread, coherence bandwidth, and channel capacity distribution.

  @article{0f4de0c95b623807015b7d2f10420285,
  author = {Pittolo, Alberto and Tonello, Andrea M.},
  title = {{A Synthetic Statistical MIMO PLC Channel Model Applied to an In-Home Scenario}},
  journal = {IEEE Transactions on Communications},
  year = {2017},
  abstract = {This paper proposes a synthetic statistical top-down MIMO power line communications channel model based on a pure phenomenological approach. The basic idea consists of directly synthesizing the experimental channel statistical properties to obtain an extremely compact model that requires a small set of parameters. The model is derived from the analysis of the in-home 2 × 3 MIMO PLC channel data set obtained by the ETSI Specialist Task Force 410 measurement campaign in the band 1.8–100 MHz. The challenge of modeling the channel statistical correlation, exhibited among the frequencies and between the MIMO modes, in compact form is tackled and it is shown that a small set of parameters can be used to reconstruct such a correlation behavior. The model is validated and compared to the measured channels, showing a good agreement in terms of average channel gain, root-mean-square delay spread, coherence bandwidth, and channel capacity distribution.},
  doi = {10.1109/TCOMM.2017.2677938},
  volume = {65},
  number = {6},
  pages = {2543--2553},
  month = {6},
  url = {http://ieeexplore.ieee.org/document/7870625/},
  }

• R. M. W. Masood, J. F. Schmidt, G. Brandner, and C. Bettstetter, “DISTY: Dynamic Stochastic Time Synchronization for Wireless Sensor Networks,” IEEE Transactions on Industrial Informatics, vol. 13, iss. 3, p. 1421–1429, 2017. doi:10.1109/TII.2016.2618348
  [BibTeX] [Abstract] [Download PDF]
  

  A time synchronization technique for networked devices with low-precision oscillators and low computational power is proposed and evaluated. We apply a dynamic stochastic model inserted into a Kalman filter formulation to track the clock evolution of oscillators and achieve synchrony to a central time reference. Indoor and outdoor experiments performed with commercially available wireless sensor platforms over several days serve as a proof of concept and show the synchronization accuracy under stable and varying temperature conditions.

  @article{0f4de0c76166a7a2016166e94d090000,
  author = {Masood, Rao Muhammad Wasif and Schmidt, Jorge Friedrich and Brandner, Günther and Bettstetter, Christian},
  title = {{DISTY: Dynamic Stochastic Time Synchronization for Wireless Sensor Networks}},
  journal = {IEEE Transactions on Industrial Informatics },
  year = {2017},
  abstract = {A time synchronization technique for networked devices with low-precision oscillators and low computational power is proposed and evaluated. We apply a dynamic stochastic model inserted into a Kalman filter formulation to track the clock evolution of oscillators and achieve synchrony to a central time reference. Indoor and outdoor experiments performed with commercially available wireless sensor platforms over several days serve as a proof of concept and show the synchronization accuracy under stable and varying temperature conditions.},
  doi = {10.1109/TII.2016.2618348 },
  volume = {13},
  number = {3},
  pages = {1421--1429},
  month = {6},
  url = {https:// http://ieeexplore.ieee.org/document/7592904/},
  }

• K. Rabbie, B. Adebisi, E. Yousif, H. Gacanin, and A. M. Tonello, “A Comparison between Orthogonal and Non-Orthogonal Multiple Access in Cooperative Relaying Power Line Communication Systems,” IEEE Access, vol. 5, p. 10118–10129, 2017. doi:10.1109/ACCESS.2017.2710280
  [BibTeX] [Abstract] [Download PDF]
  

  Most, if not all, existing studies on power line communication (PLC) systems as well as industrial PLC standards are based on orthogonal multiple access schemes, such as orthogonal frequency-division multiplexing and code-division multiple access. In this paper, we propose non-orthogonal multiple access (NOMA) for decode-and-forward cooperative relaying PLC systems to achieve higher throughput and improve user fairness. To quantitatively characterize the proposed system performance, we also study conventional cooperative relaying (CCR) PLC systems. We evaluate the performance of the two systems in terms of the average capacity. In this respect, accurate analytical expressions for the average capacity are derived and validated with Monte Carlo simulations. The impact of several system parameters, such as the branching, impulsive noise probability, cable lengths, the power allocation coefficients, and input signal-to-noise ratio, is investigated. The results reveal that the performance of the proposed NOMA-PLC scheme is superior compared with that of the CCR-PLC system. It is also shown that the NOMA-PLC system can be more effective in reducing electromagnetic compatibility associated with PLC and that increasing the network branches can considerably degrade the performance. Moreover, optimizing the power allocation coefficients is found to be of utmost importance to maximize the performance of the proposed system.

  @article{0f4de0c75c57e6eb015c586f644c0040,
  author = {Rabbie, Khaled and Adebisi, Bamidele and Yousif, Ebtihal and Gacanin, Haris and Tonello, Andrea M.},
  title = {{A Comparison between Orthogonal and Non-Orthogonal Multiple Access in Cooperative Relaying Power Line Communication Systems}},
  journal = {IEEE Access},
  year = {2017},
  abstract = {Most, if not all, existing studies on power line communication (PLC) systems as well as industrial PLC standards are based on orthogonal multiple access schemes, such as orthogonal frequency-division multiplexing and code-division multiple access. In this paper, we propose non-orthogonal multiple access (NOMA) for decode-and-forward cooperative relaying PLC systems to achieve higher throughput and improve user fairness. To quantitatively characterize the proposed system performance, we also study conventional cooperative relaying (CCR) PLC systems. We evaluate the performance of the two systems in terms of the average capacity. In this respect, accurate analytical expressions for the average capacity are derived and validated with Monte Carlo simulations. The impact of several system parameters, such as the branching, impulsive noise probability, cable lengths, the power allocation coefficients, and input signal-to-noise ratio, is investigated. The results reveal that the performance of the proposed NOMA-PLC scheme is superior compared with that of the CCR-PLC system. It is also shown that the NOMA-PLC system can be more effective in reducing electromagnetic compatibility associated with PLC and that increasing the network branches can considerably degrade the performance. Moreover, optimizing the power allocation coefficients is found to be of utmost importance to maximize the performance of the proposed system.},
  doi = {10.1109/ACCESS.2017.2710280},
  volume = {5},
  pages = {10118--10129},
  month = {5},
  url = {http://ieeexplore.ieee.org/document/7936664/},
  }

• S. Hayat, E. Yanmaz, T. X. Brown, and C. Bettstetter, “Multi-Objective UAV Path Planning for Search and Rescue,” in IEEE International Conference on Robotics & Automation (ICRA), Piscataway (NJ): IEEE, 2017, p. 5569–5574. doi:10.1109/ICRA.2017.7989656
  [BibTeX] [Download PDF]

  @incollection{0f4de0c759fa92d40159fea17aa6027d,
  author = {Hayat, Samira and Yanmaz, Evsen and Brown, Timothy X and Bettstetter, Christian},
  title = {{Multi-Objective UAV Path Planning for Search and Rescue}},
  booktitle = {IEEE International Conference on Robotics \& Automation (ICRA)},
  publisher = {IEEE},
  year = {2017},
  doi = {10.1109/ICRA.2017.7989656},
  pages = {5569--5574},
  address = {Piscataway (NJ)},
  month = {5},
  isbn = {978-1-5090-4633-1},
  url = {http://ieeexplore.ieee.org/document/7989656/},
  }

• S. Liu, F. Yang, W. Ding, J. Song, and A. M. Tonello, “Structured Compressed Sensing Based Narrowband Interference Elimination for In-Home Power Line Communications,” IEEE Transactions on Consumer Electronics, vol. 63, iss. 1, p. 10–18, 2017. doi:10.1109/TCE.2017.014667
  [BibTeX] [Abstract] [Download PDF]
  

  The structured compressed sensing based framework for the estimation of NarrowBand Interference (NBI) in power line communication is proposed, which facilitates in-home interconnection and prevents the wired consumer electronics devices from contamination of NBI. To recover the NBI accurately, the Structured Compressed Sensing (SCS) theory is introduced, and the method of SCS based Temporal Differential Measuring (SCS-TDM) is proposed, which fully exploits the temporal correlation of NBI. By exploiting the repeated training sequences, the NBI measurements matrix is acquired. With the exploitation of the prior partial support information, a more effective greedy algorithm, structured prior aided sparsity adaptive matching pursuit, is proposed. The performance of the proposed algorithm is theoretically guaranteed, and simulation results validate that the proposed method significantly outperforms existing counterparts.

  @article{0f4de0c95b623807015b7d3a3f0502bd,
  author = {Liu, Sicong and Yang, Fang and Ding, Wenbo and Song, Jian and Tonello, Andrea M.},
  title = {{Structured Compressed Sensing Based Narrowband Interference Elimination for In-Home Power Line Communications}},
  journal = {IEEE Transactions on Consumer Electronics},
  year = {2017},
  abstract = {The structured compressed sensing based framework for the estimation of NarrowBand Interference (NBI) in power line communication is proposed, which facilitates in-home interconnection and prevents the wired consumer electronics devices from contamination of NBI. To recover the NBI accurately, the Structured Compressed Sensing (SCS) theory is introduced, and the method of SCS based Temporal Differential Measuring (SCS-TDM) is proposed, which fully exploits the temporal correlation of NBI. By exploiting the repeated training sequences, the NBI measurements matrix is acquired. With the exploitation of the prior partial support information, a more effective greedy algorithm, structured prior aided sparsity adaptive matching pursuit, is proposed. The performance of the proposed algorithm is theoretically guaranteed, and simulation results validate that the proposed method significantly outperforms existing counterparts.},
  doi = {10.1109/TCE.2017.014667},
  volume = {63},
  number = {1},
  pages = {10--18},
  month = {5},
  url = {http://ieeexplore.ieee.org/document/7931965/},
  }

• F. Passerini and A. M. Tonello, “Power line network topology identification using admittance measurements and total least squares estimation,” in IEEE International Conference on Communications (ICC 2017), J. Beylat and H. Sari, Eds., Piscataway (NJ): IEEE, 2017, p. 1–6. doi:10.1109/ICC.2017.7996943
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we consider the identification of a smart grid network topology by means of admittance measurements performed at the network nodes. We show how the application of the transmission line theory allows the identification of the node-to-node connections. Thereby, a topology identification algorithm is presented. The identification error due to the network noise is reduced by performing repeated measurements, either at different time instants or over a set of frequencies, at each network node. The information is then fused by means of the total least square regression technique, which is also compared to a simpler estimator. A thorough analysis of the results is then presented, which shows good reliability of the proposed algorithm.

  @incollection{0f4de0c95e38dd44015e4c92e455018e,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Power line network topology identification using admittance measurements and total least squares estimation}},
  booktitle = {IEEE International Conference on Communications (ICC 2017)},
  publisher = {IEEE},
  year = {2017},
  abstract = {In this paper, we consider the identification of a smart grid network topology by means of admittance measurements performed at the network nodes. We show how the application of the transmission line theory allows the identification of the node-to-node connections. Thereby, a topology identification algorithm is presented. The identification error due to the network noise is reduced by performing repeated measurements, either at different time instants or over a set of frequencies, at each network node. The information is then fused by means of the total least square regression technique, which is also compared to a simpler estimator. A thorough analysis of the results is then presented, which shows good reliability of the proposed algorithm.},
  doi = {10.1109/ICC.2017.7996943},
  editor = {Jean-Luc Beylat and Hikmet Sari},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {5},
  url = {http://ieeexplore.ieee.org/document/7996943/},
  }

• A. Bagnato, R. K. Bíró, D. Bonino, C. Pastrone, W. Elmenreich, R. Reiners, M. M. Schranz, and E. Arnautovic, “Designing Swarms of Cyber-Physical Systems: the H2020 CPSwarm Project,” in Proceedings of the Computing Frontiers Conference, New York (NY): ACM Press, 2017, p. 305–312. doi:10.1145/3075564.3077628
  [BibTeX] [Abstract] [Download PDF]
  

  Cyber-Physical Systems (CPS) find applications in a number of large-scale, safety-critical domains e.g. transportation, smart cities, etc. As a matter of fact, the increasing interactions amongst different CPS are starting to generate unpredictable behaviors and emerging properties, often leading to unforeseen and/or undesired results. Rather than being an unwanted byproduct, these interactions could, however, become an advantage if they were explicitly managed, and accounted, since the early design stages. The CPSwarm project, presented in this paper, aims at tackling these kinds of challenges by easing development and integration of complex herds of heterogeneous CPS. Thanks to CPSwarm, systems designed through a combination of existing and emerging tools, will collaborate on the basis of local policies and exhibit a collective behavior capable of solving complex, real-world, problems. Three real-world use cases will demonstrate the validity of foundational assumptions of the presented approach as well as the viability of the developed tools and methodologies.

  @incollection{0f4de0c95d884da6015d990abf4f0307,
  author = {Bagnato, Alessandra and Bíró, Regina Krisztina and Bonino, Dario and Pastrone, Claudio and Elmenreich, Wilfried and Reiners, René and Schranz, Melanie Marianne and Arnautovic, Edin},
  title = {{Designing Swarms of Cyber-Physical Systems: the H2020 CPSwarm Project}},
  booktitle = {Proceedings of the Computing Frontiers Conference},
  publisher = {ACM Press},
  year = {2017},
  abstract = {Cyber-Physical Systems (CPS) find applications in a number of large-scale, safety-critical domains e.g. transportation, smart cities, etc. As a matter of fact, the increasing interactions amongst different CPS are starting to generate unpredictable behaviors and emerging properties, often leading to unforeseen and/or undesired results. Rather than being an unwanted byproduct, these interactions could, however, become an advantage if they were explicitly managed, and accounted, since the early design stages. The CPSwarm project, presented in this paper, aims at tackling these kinds of challenges by easing development and integration of complex herds of heterogeneous CPS. Thanks to CPSwarm, systems designed through a combination of existing and emerging tools, will collaborate on the basis of local policies and exhibit a collective behavior capable of solving complex, real-world, problems. Three real-world use cases will demonstrate the validity of foundational assumptions of the presented approach as well as the viability of the developed tools and methodologies.},
  doi = {10.1145/3075564.3077628},
  pages = {305--312},
  address = {New York (NY)},
  month = {5},
  isbn = {978-1-4503-4487-6},
  url = {https://mobile.aau.at/publications/bagnato-2017-Designing-Swarms-of-Cyber-Physical-Systems.pdf},
  }

• B. Salamat and A. M. Tonello, “Stochastic Trajectory Generation Using Particle Swarm Optimization for Quadrotor Unmanned Aerial Vehicles (UAVs),” Aerospace, p. 1–19, 2017. doi:10.3390/aerospace4020027
  [BibTeX] [Abstract] [Download PDF]
  

  The aim of this paper is to provide a realistic stochastic trajectory generation method for unmanned aerial vehicles that offers a tool for the emulation of trajectories in typical flight scenarios. Three scenarios are defined in this paper. The trajectories for these scenarios are implemented with quintic B-splines that grant smoothness in the second-order derivatives of Euler angles and accelerations. In order to tune the parameters of the quintic B-spline in the search space, a multi-objective optimization method called particle swarm optimization (PSO) is used. The proposed technique satisfies the constraints imposed by the configuration of the unmanned aerial vehicle (UAV). Further particular constraints can be introduced such as: obstacle avoidance, speed limitation, and actuator torque limitations due to the practical feasibility of the trajectories. Finally, the standard rapidly-exploring random tree (RRT*) algorithm, the standard (A*) algorithm and the genetic algorithm (GA) are simulated to make a comparison with the proposed algorithm in terms of execution time and effectiveness in finding the minimum length trajectory.

  @article{0f4de0c75c57e6eb015c587b3c990074,
  author = {Salamat, Babak and Tonello, Andrea M.},
  title = {{Stochastic Trajectory Generation Using Particle Swarm Optimization for Quadrotor Unmanned Aerial Vehicles (UAVs)}},
  journal = {Aerospace},
  year = {2017},
  abstract = {The aim of this paper is to provide a realistic stochastic trajectory generation method for unmanned aerial vehicles that offers a tool for the emulation of trajectories in typical flight scenarios. Three scenarios are defined in this paper. The trajectories for these scenarios are implemented with quintic B-splines that grant smoothness in the second-order derivatives of Euler angles and accelerations. In order to tune the parameters of the quintic B-spline in the search space, a multi-objective optimization method called particle swarm optimization (PSO) is used. The proposed technique satisfies the constraints imposed by the configuration of the unmanned aerial vehicle (UAV). Further particular constraints can be introduced such as: obstacle avoidance, speed limitation, and actuator torque limitations due to the practical feasibility of the trajectories. Finally, the standard rapidly-exploring random tree (RRT*) algorithm, the standard (A*) algorithm and the genetic algorithm (GA) are simulated to make a comparison with the proposed algorithm in terms of execution time and effectiveness in finding the minimum length trajectory.},
  doi = {10.3390/aerospace4020027},
  pages = {1--19},
  month = {5},
  url = {http://www.mdpi.com/2226-4310/4/2/27},
  }

• T. Khatib, W. Elmenreich, and A. Mohamed, “Simplified IV Characteristic Tester for Photovoltaic Modules Using a DC-DC Boost Converter,” Sustainability, vol. 9, iss. 4, 2017. doi:10.3390/su9040657
  [BibTeX] [Download PDF]

  @article{0f4de0c95d884da6015dade3f74f08e9,
  author = {Khatib, Tamer and Elmenreich, Wilfried and Mohamed, A.},
  title = {{Simplified IV Characteristic Tester for Photovoltaic Modules Using a DC-DC Boost Converter}},
  journal = {Sustainability},
  year = {2017},
  doi = {10.3390/su9040657},
  volume = {9},
  number = {4},
  month = {4},
  url = {http://www.mdpi.com/2071-1050/9/4/657/htm},
  }

• M. De Piante and A. M. Tonello, “Impedance Matching and Channel Capacity in Power Line Communication Systems,” in IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC), New York: IEEE Communications Society, 2017, p. 1–6. doi:10.1109/ISPLC.2017.7897101
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, the effects of impedance matching in the PLC systems in terms of capacity are investigated. Two different matching methods at the transmitter port are introduced. Since the punctual impedance matching is a difficult task for the electronics, firstly we illustrate an algorithm useful to measure the input PLC channel impedance at both the transmitter and the receiver sides. This is of fundamental importance for the matching operations. Once the input impedances are retrieved, we compare the achievable system capacity obtainable with the transmitter impedance optimized applying the considered matching criteria. Furthermore, the channel capacity loss with simplified and more implementable transmitter impedance profiles are investigated.

  @incollection{0f4de0c95b623807015b7d477b9002fc,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{Impedance Matching and Channel Capacity in Power Line Communication Systems}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC)},
  publisher = {IEEE Communications Society},
  year = {2017},
  abstract = {In this paper, the effects of impedance matching in the PLC systems in terms of capacity are investigated. Two different matching methods at the transmitter port are introduced. Since the punctual impedance matching is a difficult task for the electronics, firstly we illustrate an algorithm useful to measure the input PLC channel impedance at both the transmitter and the receiver sides. This is of fundamental importance for the matching operations. Once the input impedances are retrieved, we compare the achievable system capacity obtainable with the transmitter impedance optimized applying the considered matching criteria. Furthermore, the channel capacity loss with simplified and more implementable transmitter impedance profiles are investigated.},
  doi = {10.1109/ISPLC.2017.7897101},
  pages = {1--6},
  address = {New York},
  month = {4},
  isbn = {978-1-5090-2389-9},
  url = {http://ieeexplore.ieee.org/document/7897101/},
  }

• K. Rabie, B. Adebisi, A. M. Tonello, and G. Nauryzbayev, “More Robust Decode-and-forward Relaying over Impulsive Noise Power Line Channels,” in IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC), New York: IEEE Communications Society, 2017, p. 1–5. doi:10.1109/ISPLC.2017.7897096
  [BibTeX] [Abstract] [Download PDF]
  

  This paper discusses the issue of energy-efficiency in power line communication (PLC) systems and introduces decode-and-forward (DF) energy-harvesting based relaying. The performance of the proposed system is analyzed in terms of the energy efficiency for which accurate analytical expressions are derived. To highlight the achievable gains, we also evaluate the performance of both the conventional DF relaying and the direct-link systems. The presented simulated results clearly demonstrate the correctness of our analysis as well as the advantage of the proposed system over the conventional relaying and direct-link approaches. Additionally, it is shown that the proposed scheme will become more energy efficient as the harvested noise energy becomes larger.

  @incollection{0f4de0c95b623807015b7d49d1360311,
  author = {Rabie, Khaled and Adebisi, Bamidele and Tonello, Andrea M. and Nauryzbayev, Galymzhan},
  title = {{More Robust Decode-and-forward Relaying over Impulsive Noise Power Line Channels}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC)},
  publisher = {IEEE Communications Society},
  year = {2017},
  abstract = {This paper discusses the issue of energy-efficiency in power line communication (PLC) systems and introduces decode-and-forward (DF) energy-harvesting based relaying. The performance of the proposed system is analyzed in terms of the energy efficiency for which accurate analytical expressions are derived. To highlight the achievable gains, we also evaluate the performance of both the conventional DF relaying and the direct-link systems. The presented simulated results clearly demonstrate the correctness of our analysis as well as the advantage of the proposed system over the conventional relaying and direct-link approaches. Additionally, it is shown that the proposed scheme will become more energy efficient as the harvested noise energy becomes larger.},
  doi = {10.1109/ISPLC.2017.7897096},
  pages = {1--5},
  address = {New York},
  month = {4},
  isbn = {978-1-5090-2389-9},
  url = {http://ieeexplore.ieee.org/document/7897096/},
  }

• F. Passerini and A. M. Tonello, “Power Line Fault Detection and Localization Using High Frequency Impedance Measurement,” in IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC), New York: IEEE Communications Society, 2017, p. 1–5. doi:10.1109/ISPLC.2017.7897102
  [BibTeX] [Abstract] [Download PDF]
  

  The reliability and quality of electrical power networks are affected by the occurrence of electrical faults. In this paper, we propose a novel method to identify the occurrence of faults in distribution networks, based on impedance measurements performed at the central distribution office. The measurements can be performed using PLC modems that belong to the energy metering infrastructure. The fault is detected by means of continuous impedance monitoring and afterwards its distance from the central office is estimated using the same measurement traces, without requiring additional information. Different type of faults are tested, and the effect of the measurement bandwidth and the electrical noise on the measurement is also assessed.

  @incollection{0f4de0c95b623807015b7d439ee202e7,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Power Line Fault Detection and Localization Using High Frequency Impedance Measurement}},
  booktitle = {IEEE International Symposium on Power Line Communications and its Applications 2017 (ISPLC)},
  publisher = {IEEE Communications Society},
  year = {2017},
  abstract = {The reliability and quality of electrical power networks are affected by the occurrence of electrical faults. In this paper, we propose a novel method to identify the occurrence of faults in distribution networks, based on impedance measurements performed at the central distribution office. The measurements can be performed using PLC modems that belong to the energy metering infrastructure. The fault is detected by means of continuous impedance monitoring and afterwards its distance from the central office is estimated using the same measurement traces, without requiring additional information. Different type of faults are tested, and the effect of the measurement bandwidth and the electrical noise on the measurement is also assessed.},
  doi = {10.1109/ISPLC.2017.7897102},
  pages = {1--5},
  address = {New York},
  month = {4},
  isbn = {978-1-5090-2389-9},
  url = {http://ieeexplore.ieee.org/document/7897102/},
  }

• J. Klinglmayr, C. Bettstetter, M. Timme, and K. Christoph, “Convergence of Self-Organizing Pulse Coupled Oscillator Synchronization in Dynamic Networks,” IEEE Transactions on Automatic Control, vol. 62, iss. 4, p. 1606–1619, 2017. doi:10.1109/TAC.2016.2593642
  [BibTeX] [Abstract] [Download PDF]
  

  The theory of pulse-coupled oscillators provides a framework to formulate and develop self-organizing synchronization strategies for wireless communications and mobile computing. These strategies show low complexity and are adaptive to changes in the network. Even though several protocols have been proposed and theoretical insight was gained there is no proof that guarantees synchronization of the oscillator phases in general dynamic coupling topologies under technological constraints. Here, we introduce a family of coupling strategies for pulse-coupled oscillators and prove that synchronization emerges for systems with arbitrary connected and dynamic topologies, individually changing signal propagation and processing delays, and stochastic pulse emission. It is shown by simulations how unreliable links or intentionally incomplete communication between oscillators can improve synchronization performance.

  @article{0f4de0c75b1dba21015b1e6118550073,
  author = {Klinglmayr, Johannes and Bettstetter, Christian and Timme, Marc and Christoph, Kirst},
  title = {{Convergence of Self-Organizing Pulse Coupled Oscillator Synchronization in Dynamic Networks}},
  journal = {IEEE Transactions on Automatic Control},
  year = {2017},
  abstract = {The theory of pulse-coupled oscillators provides a framework to formulate and develop self-organizing synchronization strategies for wireless communications and mobile computing. These strategies show low complexity and are adaptive to changes in the network. Even though several protocols have been proposed and theoretical insight was gained there is no proof that guarantees synchronization of the oscillator phases in general dynamic coupling topologies under technological constraints. Here, we introduce a family of coupling strategies for pulse-coupled oscillators and prove that synchronization emerges for systems with arbitrary connected and dynamic topologies, individually changing signal propagation and processing delays, and stochastic pulse emission. It is shown by simulations how unreliable links or intentionally incomplete communication between oscillators can improve synchronization performance.},
  doi = {10.1109/TAC.2016.2593642},
  volume = {62},
  number = {4},
  pages = {1606--1619},
  month = {4},
  url = {http://ieeexplore.ieee.org/document/7517232/},
  }

• I. Haider and B. Rinner, “Securing Cloud-based IoT Applications with Trustworthy Sensing,” in Proceedings of 2nd EAI International Conference on Cloud, Networking for IoT Systems, Berlin: Springer, 2017.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c95c1befc1015c2f294fff0161,
  author = {Haider, Ihtesham and Rinner, Bernhard},
  title = {{Securing Cloud-based IoT Applications with Trustworthy Sensing}},
  booktitle = {Proceedings of 2nd EAI International Conference on Cloud, Networking for IoT Systems},
  publisher = {Springer},
  year = {2017},
  address = {Berlin},
  month = {4},
  url = {https://pervasive.aau.at/BR/pubs/2017/Haider\_CN4IOT2017.pdf},
  }

• U. Schilcher, G. Brandner, and C. Bettstetter, “Quantifying inhomogeneity of spatial point patterns,” Computer Networks, vol. 115, p. 65–81, 2017. doi:10.1016/j.comnet.2016.12.018
  [BibTeX] [Abstract] [Download PDF]
  

  This article compares measures for quantifying the level of inhomogeneity of a given spatial point pattern. Comparisons are based on two main metrics: first, we evaluate the performance of the measures on both certain stochastic point processes and on very specific point patterns designed to expose potential weaknesses of the inhomogeneity measures. Second, we evaluate the computational complexity of the measures. Results show that choosing a measure is a tradeoff between accurate assessment of inhomogeneity and computational complexity. The only exception is the proposed extended wrap-around measure, which is performing well in terms of both metrics.

  @article{0f4de0c95a8a2ac6015a8a6f03310008,
  author = {Schilcher, Udo and Brandner, Günther and Bettstetter, Christian},
  title = {{Quantifying inhomogeneity of spatial point patterns}},
  journal = {Computer Networks},
  year = {2017},
  abstract = {This article compares measures for quantifying the level of inhomogeneity of a given spatial point pattern. Comparisons are based on two main metrics: first, we evaluate the performance of the measures on both certain stochastic point processes and on very specific point patterns designed to expose potential weaknesses of the inhomogeneity measures. Second, we evaluate the computational complexity of the measures. Results show that choosing a measure is a tradeoff between accurate assessment of inhomogeneity and computational complexity. The only exception is the proposed extended wrap-around measure, which is performing well in terms of both metrics.},
  doi = {10.1016/j.comnet.2016.12.018},
  volume = {115},
  pages = {65--81},
  month = {3},
  url = {http://www.sciencedirect.com/science/article/pii/S1389128616304443},
  }

• F. Kupzog, W. Elmenreich, and R. Bieber, “Managing data and complexity in energy systems,” Computer Science – Research and Development, vol. 32, iss. 1, p. 1–2, 2017. doi:10.1007/s00450-016-0322-7
  [BibTeX] [Download PDF]

  @article{0f4de0c95bd778a3015bd7b9051b000c,
  author = {Kupzog, Friederich and Elmenreich, Wilfried and Bieber, Ronald},
  title = {{Managing data and complexity in energy systems}},
  journal = {Computer Science - Research and Development},
  year = {2017},
  doi = {10.1007/s00450-016-0322-7},
  volume = {32},
  number = {1},
  pages = {1--2},
  month = {3},
  url = {http://paperity.org/p/79275093/managing-data-and-complexity-in-energy-systems},
  }

• A. M. Tonello and M. Girotto, “EMC Regulations and Spectral Constraints for Multicarrier Modulation in PLC,” IEEE Access, vol. 5, p. 4954–4966, 2017. doi:10.1109/ACCESS.2017.2676352
  [BibTeX] [Abstract] [Download PDF]
  

  This paper considers Electromagnetic Compatibility (EMC) aspects in the context of Power Line Communication (PLC) systems. It offers a complete overview of both narrow band PLC and broad band PLC EMC norms. How to interpret and translate such norms and measurement procedures into typical constraints used by designers of communication systems,is discussed. In particular, the constraints to the modulated signal spectrum are considered and the ability of pulse shaped OFDM (PS-OFDM), used in most of the PLC standards as IEEE P1901 and P1901.2, to fulfill them is analyzed. In addition, aiming to improve the spectrum management ability, a novel scheme named Pulse Shaped Cyclic Block Filtered Multitone modulation (PSCB-FMT)is introduced and compared to PS-OFDM. It is shown that, PS-CB-FMT offers better ability to fulfill the norms which translates in higher system capacity.

  @article{0f4de0c95b623807015b7d360553029d,
  author = {Tonello, Andrea M. and Girotto, Mauro},
  title = {{EMC Regulations and Spectral Constraints for Multicarrier Modulation in PLC}},
  journal = {IEEE Access},
  year = {2017},
  abstract = {This paper considers Electromagnetic Compatibility (EMC) aspects in the context of Power Line Communication (PLC) systems. It offers a complete overview of both narrow band PLC and broad band PLC EMC norms. How to interpret and translate such norms and measurement procedures into typical constraints used by designers of communication systems,is discussed. In particular, the constraints to the modulated signal spectrum are considered and the ability of pulse shaped OFDM (PS-OFDM), used in most of the PLC standards as IEEE P1901 and P1901.2, to fulfill them is analyzed. In addition, aiming to improve the spectrum management ability, a novel scheme named Pulse Shaped Cyclic Block Filtered Multitone modulation (PSCB-FMT)is introduced and compared to PS-OFDM. It is shown that, PS-CB-FMT offers better ability to fulfill the norms which translates in higher system capacity.},
  doi = {10.1109/ACCESS.2017.2676352},
  volume = {5},
  pages = {4954--4966},
  month = {3},
  url = {http://ieeexplore.ieee.org/document/7867791/?arnumber=7867791\&source=authoralert},
  }

• F. Passerini and A. M. Tonello, “On the Exploitation of Admittance Measurements for Wired Network Topology Derivation,” IEEE Transactions on Instrumentation and Measurement, vol. 3, iss. 66, p. 374–382, 2017. doi:10.1109/TIM.2016.2636478
  [BibTeX] [Abstract] [Download PDF]
  

  The knowledge of the topology of a wired network is often of fundamental importance. For instance, in the context of power line communications networks it is helpful to implement data routing strategies, while in power distribution networks and smart microgrids it is required for grid monitoring and for power flow management. In this paper, we use the transmission line theory to shed new light and to show how the topological properties of a wired network can be found exploiting admittance measurements at the nodes. An analytic proof is reported to show that the derivation of the topology can be done in complex networks under certain assumptions. We also analyze the effect of the network background noise on admittance measurements. In this respect, we propose a topology derivation algorithm that works in the presence of noise. We finally analyze the performance of the algorithm in a setup that is typical of power line distribution networks.

  @article{0f4de0c9592b88820159645b602e116b,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{On the Exploitation of Admittance Measurements for Wired Network Topology Derivation}},
  journal = {IEEE Transactions on Instrumentation and Measurement},
  year = {2017},
  abstract = {The knowledge of the topology of a wired network is often of fundamental importance. For instance, in the context of power line communications networks it is helpful to implement data routing strategies, while in power distribution networks and smart microgrids it is required for grid monitoring and for power flow management. In this paper, we use the transmission line theory to shed new light and to show how the topological properties of a wired network can be found exploiting admittance measurements at the nodes. An analytic proof is reported to show that the derivation of the topology can be done in complex networks under certain assumptions. We also analyze the effect of the network background noise on admittance measurements. In this respect, we propose a topology derivation algorithm that works in the presence of noise. We finally analyze the performance of the algorithm in a setup that is typical of power line distribution networks.},
  doi = {10.1109/TIM.2016.2636478},
  volume = {3},
  number = {66},
  pages = {374--382},
  month = {3},
  url = {http://ieeexplore.ieee.org/abstract/document/7797477/},
  }

• A. Monacchi, F. Versolatto, M. Herold, D. Egarter, A. M. Tonello, and W. Elmenreich, “An Open Solution to Provide Personalized Feedback for Building Energy Management,” Journal of Ambient Intelligence and Smart Environments, vol. 9, iss. 2, p. 147–162, 2017. doi:10.3233/AIS-170422
  [BibTeX] [Abstract] [Download PDF]
  

  The integration of renewable energy sources increases the complexity in maintaining the power grid. In particular, the highly dynamic nature of generation and consumption demands for a better utilization of energy resources, which seen the cost of storage infrastructure, can only be achieved through demand-response. Accordingly, the availability of energy and potential overload situations can be reflected using a price signal. The effectiveness of this mechanism arises from the flexibility of device operation, which is nevertheless heavily reliant on the exchange of information between the grid and its consumers. In this paper, we investigate the capability of an interactive energy management system to timely inform users on energy usage, in order to promote an optimal use of local resources. In particular, we analyze data being collected in several households in Italy and Austria to gain insights into usage behavior and drive the design of more effective systems. The outcome is the formulation of energy efficiency policies for residential buildings, as well as the design of an energy management system, consisting of hardware measurement units and a management software. The Mjölnir framework, which we release for open use, provides a platform where various feedback concepts can be implemented and assessed. This includes widgets displaying disaggregated and aggregated consumption information, as well as daily production and tailored advices. The formulated policies were implemented as an advisor widget able to autonomously analyze usage and provide tailored energy feedback. The advisor is estimated leading to a potential of 34\% of savings using measurement data from the GREEND dataset.

  @article{0f4de0c7556e537101556ec2b130006d,
  author = {Monacchi, Andrea and Versolatto, Fabio and Herold, Martin and Egarter, Dominik and Tonello, Andrea M. and Elmenreich, Wilfried},
  title = {{An Open Solution to Provide Personalized Feedback for Building Energy Management}},
  journal = {Journal of Ambient Intelligence and Smart Environments},
  year = {2017},
  abstract = {The integration of renewable energy sources increases the complexity in maintaining the power grid. In particular, the highly dynamic nature of generation and consumption demands for a better utilization of energy resources, which seen the cost of storage infrastructure, can only be achieved through demand-response. Accordingly, the availability of energy and potential overload situations can be reflected using a price signal. The effectiveness of this mechanism arises from the flexibility of device operation, which is nevertheless heavily reliant on the exchange of information between the grid and its consumers. In this paper, we investigate the capability of an interactive energy management system to timely inform users on energy usage, in order to promote an optimal use of local resources. In particular, we analyze data being collected in several households in Italy and Austria to gain insights into usage behavior and drive the design of more effective systems. The outcome is the formulation of energy efficiency policies for residential buildings, as well as the design of an energy management system, consisting of hardware measurement units and a management software. The Mjölnir framework, which we release for open use, provides a platform where various feedback concepts can be implemented and assessed. This includes widgets displaying disaggregated and aggregated consumption information, as well as daily production and tailored advices. The formulated policies were implemented as an advisor widget able to autonomously analyze usage and provide tailored energy feedback. The advisor is estimated leading to a potential of 34\% of savings using measurement data from the GREEND dataset.},
  doi = {10.3233/AIS-170422},
  volume = {9},
  number = {2},
  pages = {147--162},
  month = {2},
  url = {https://mobile.aau.at/publications/monacchi-2017-An\%20open\%20solution\%20to\%20provide\%20personalized\%20feedback.pdf},
  }

• M. Girotto and A. M. Tonello, “Pulse Shaping Applied to Cyclic Block FMT for Improved Spectrum Usage,” in 11th International ITG Conference on Systems, Communications and Coding (SCC 2017), Frankfurt am Main: VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V., 2017, p. 1–6.
  [BibTeX] [Abstract] [Download PDF]
  

  Out-of-Band (OOB) emissions are a drawback that affect the OFDM scheme. To mitigate the issue, time domain pulse shaping (PS) has been introduced in the known Pulse Shaped OFDM (PS-OFDM) scheme. This paper extends the PS idea to the Cyclic Block Filtered Multitone (CB-FMT) modulation scheme. CB-FMT represents a filtered multitone modulation scheme where, however, the filter bank uses cyclic convolutions instead of linear convolutions. However, while PS-OFDM starts from OFDM that has sinc-like sub-channel frequency responses, Pulse Shaped CB-FMT (PS-CB-FMT) deploys well frequency localized sub-channel pulses. Therefore, PS-CB-FMT has a more confined spectrum which is of particular importance in applications that have to offer agile spectrum usage to fulfill norms and coexistence with other systems. One of these applications is Power Line Communication (PLC) which is subject to strict EMC regulations. In this context, we show that PS-CB-FMT is capable to fulfill the spectral masks much more efficiently than PS-OFDM adopted in all relevant PLC standards. In turn, this provides improved capacity performance.

  @incollection{0f4de0c95c7cf294015c868dc8ed0391,
  author = {Girotto, Mauro and Tonello, Andrea M.},
  title = {{Pulse Shaping Applied to Cyclic Block FMT for Improved Spectrum Usage}},
  booktitle = {11th International ITG Conference on Systems, Communications and Coding (SCC 2017)},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  year = {2017},
  abstract = {Out-of-Band (OOB) emissions are a drawback that affect the OFDM scheme. To mitigate the issue, time domain pulse shaping (PS) has been introduced in the known Pulse Shaped OFDM (PS-OFDM) scheme. This paper extends the PS idea to the Cyclic Block Filtered Multitone (CB-FMT) modulation scheme. CB-FMT represents a filtered multitone modulation scheme where, however, the filter bank uses cyclic convolutions instead of linear convolutions. However, while PS-OFDM starts from OFDM that has sinc-like sub-channel frequency responses, Pulse Shaped CB-FMT (PS-CB-FMT) deploys well frequency localized sub-channel pulses. Therefore, PS-CB-FMT has a more confined spectrum which is of particular importance in applications that have to offer agile spectrum usage to fulfill norms and coexistence with other systems. One of these applications is Power Line Communication (PLC) which is subject to strict EMC regulations. In this context, we show that PS-CB-FMT is capable to fulfill the spectral masks much more efficiently than PS-OFDM adopted in all relevant PLC standards. In turn, this provides improved capacity performance.},
  pages = {1--6},
  address = {Frankfurt am Main},
  month = {2},
  isbn = {978-3-8007-4362-9},
  url = {http://ieeexplore.ieee.org/document/7938057/},
  }

• A. Papaiz and A. M. Tonello, “Single-Receiver Switched Opportunistic Approach to AoA Estimation in Hardware Impaired Scenarios,” in 11th International ITG Conference on Systems, Communications and Coding (SCC 2017), Frankfurt am Main: VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V., 2017, p. 1–6.
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, a novel switched hardware approach to angle of arrival (AoA) estimation in radio systems that signal using quadrature amplitude modulations (QAM) is presented. The proposed algorithm, namely constellation statistical pattern identification and overlap (CSP-IDO), is based on the comparison of the probability density functions of successive signal snapshots from antennas (asynchronous approach). Contrariwise, other AoA techniques such as differential methods, beamforming and root-MUSIC are designed to acquire in parallel signals from the antennas (synchronous approach). CSP-IDO allows a significantly reduced hardware usage with respect to synchronous methods, without deteriorating precision. The proposed algorithm used with a time switched antenna approach leads to better performance in terms of overall hardware complexity, power consumption and possibly costs. Furthermore, CSP-IDO is robust to transmitter hardware impairments with respect to synchronous methods.

  @incollection{0f4de0c95c7cf294015c8684e5880367,
  author = {Papaiz, Andrea and Tonello, Andrea M.},
  title = {{Single-Receiver Switched Opportunistic Approach to AoA Estimation in Hardware Impaired Scenarios}},
  booktitle = {11th International ITG Conference on Systems, Communications and Coding (SCC 2017)},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  year = {2017},
  abstract = {In this paper, a novel switched hardware approach to angle of arrival (AoA) estimation in radio systems that signal using quadrature amplitude modulations (QAM) is presented. The proposed algorithm, namely constellation statistical pattern identification and overlap (CSP-IDO), is based on the comparison of the probability density functions of successive signal snapshots from antennas (asynchronous approach). Contrariwise, other AoA techniques such as differential methods, beamforming and root-MUSIC are designed to acquire in parallel signals from the antennas (synchronous approach). CSP-IDO allows a significantly reduced hardware usage with respect to synchronous methods, without deteriorating precision. The proposed algorithm used with a time switched antenna approach leads to better performance in terms of overall hardware complexity, power consumption and possibly costs. Furthermore, CSP-IDO is robust to transmitter hardware impairments with respect to synchronous methods.},
  pages = {1--6},
  address = {Frankfurt am Main},
  month = {2},
  isbn = {978-3-8007-4362-9},
  url = {http://ieeexplore.ieee.org/document/7938054/},
  }

• F. Marcuzzi and A. M. Tonello, ” Stochastic Geometry for the Analysis of Small Radio Cells and PLC Back-Hauling,” in 11th International ITG Conference on Systems, Communications and Coding (SCC 2017), Frankfurt am Main: VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V., 2017, p. 1–6.
  [BibTeX] [Abstract] [Download PDF]
  

  Although powerlines have not been designed for data transmission, recent technical developments in Power Line Communication (PLC) have pushed the offered capacity much higher than expected, making PLC an interesting technology for last mile connections like the back-hauling considered in this work. On the other hand, cellular traffic is doubling every year, and this growth trend is not expected to end soon. Small cells have been advocated as a solution to fragment the network and increase the local capacity; in addition, new generation of mobile communication is likely to employ high frequency bands that will cover smaller areas, hence, an increase in cell density is expected. This will increase the challenge for the realization of a cost effective high performance back-haul to bridge the small cell network with the core network. Nowadays, the back-haul portion of the network is either wireless or high speed wireline (ADSL, optical fiber). This paper introduces the idea of employing PLC to support back-hauling for small radio cells. To assess the backhaul requirements and the performance of the integrated radio-PLC network, a topology model is proposed to describe both the small radio cell network layout and the power delivery grid used to both power and “data” connect the base stations. Then, a parametric cell traffic model is considered to measure the overall traffic to be transported through the PLC network and determine whether (under the power grid topology constraints) the PLC back-haul can meet the traffic demands.

  @incollection{0f4de0c95c7cf294015c868a0950037c,
  author = {Marcuzzi, Francesco and Tonello, Andrea M.},
  title = {{ Stochastic Geometry for the Analysis of Small Radio Cells and PLC Back-Hauling}},
  booktitle = {11th International ITG Conference on Systems, Communications and Coding (SCC 2017)},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  year = {2017},
  abstract = {Although powerlines have not been designed for data transmission, recent technical developments in Power Line Communication (PLC) have pushed the offered capacity much higher than expected, making PLC an interesting technology for last mile connections like the back-hauling considered in this work. On the other hand, cellular traffic is doubling every year, and this growth trend is not expected to end soon. Small cells have been advocated as a solution to fragment the network and increase the local capacity; in addition, new generation of mobile communication is likely to employ high frequency bands that will cover smaller areas, hence, an increase in cell density is expected. This will increase the challenge for the realization of a cost effective high performance back-haul to bridge the small cell network with the core network. Nowadays, the back-haul portion of the network is either wireless or high speed wireline (ADSL, optical fiber). This paper introduces the idea of employing PLC to support back-hauling for small radio cells. To assess the backhaul requirements and the performance of the integrated radio-PLC network, a topology model is proposed to describe both the small radio cell network layout and the power delivery grid used to both power and "data" connect the base stations. Then, a parametric cell traffic model is considered to measure the overall traffic to be transported through the PLC network and determine whether (under the power grid topology constraints) the PLC back-haul can meet the traffic demands.},
  pages = {1--6},
  address = {Frankfurt am Main},
  month = {2},
  isbn = {978-3-8007-4362-9},
  url = {http://ieeexplore.ieee.org/document/7938082/},
  }

• Z. Guettatfi, P. Hübner, M. Platzner, and B. Rinner, ” Computational Self-Awareness as Design Approach for Visual Sensor Nodes,” in Proceedings of the International Symposium on Reconfigurable Communication-centric Systems-on-Chip, Piscataway (NJ): IEEE, 2017, p. 1–8. doi:10.1109/ReCoSoC.2017.8016147
  [BibTeX]

  @incollection{0f4de0c95d328fd5015d35a15e4f0082,
  author = {Guettatfi, Zakarya and Hübner, Philipp and Platzner, Marco and Rinner, Bernhard},
  title = {{ Computational Self-Awareness as Design Approach for Visual Sensor Nodes}},
  booktitle = {Proceedings of the International Symposium on Reconfigurable Communication-centric Systems-on-Chip},
  publisher = {IEEE},
  year = {2017},
  doi = {10.1109/ReCoSoC.2017.8016147},
  pages = {1--8},
  address = {Piscataway (NJ)},
  }

• S. C. Akkaladevi, M. Plasch, C. Eitzinger, and B. Rinner, ” Context Enhanced Multi Object Tracker for Human Robot Interaction,” in Proceedings of the International Conference on Human Computer Interaction, Berlin: Springer, 2017, p. 61–62. doi:10.1145/3029798.3038406
  [BibTeX] [Download PDF]

  @incollection{0f4de0c95d328fd5015d358402830020,
  author = {Akkaladevi, Sharath Chandra and Plasch, Matthias and Eitzinger, Christian and Rinner, Bernhard},
  title = {{ Context Enhanced Multi Object Tracker for Human Robot Interaction}},
  booktitle = {Proceedings of the International Conference on Human Computer Interaction},
  publisher = {Springer},
  year = {2017},
  doi = {10.1145/3029798.3038406},
  pages = {61--62},
  address = {Berlin},
  url = {http://dl.acm.org/ft\_gateway.cfm?id=3038406\&ftid=1850592\&dwn=1\&CFID=784674312\&CFTOKEN=12414143},
  }

• A. Ghiasimonfared, F. Marcuzzi, D. Righini, and A. M. Tonello, “Development of a Hybrid LoRa/G3-PLC IoT Sensing Network: an Application Oriented Approach,” in IEEE International Conference on Smart Grid Communications (SmartGridComm2017), Piscataway (NJ): IEEE, 2017.
  [BibTeX] [Abstract] [Download PDF]
  

  Nowadays, IoT and smart Grids are trending topics in research and technology applications: in fact the market for both services and products were in the hundred billions of dollars yearly in 2016. This work describes how the LoRaTMand G3-PLC technologies are brought together to create a hybrid sensor network testbed to deliver IoT applications in a campus of ten buildings, through a business model approach. The idea derives from the pursuit of the creation of an added value for a real service: in a campus owned by a private renter, an internal sensor network can be an opportunistic tool for the improvement of energy management, control and energy consumption metering.The reader will be guided through the process steps that the team took in order to obtain the results here presented: first the architectural structure of the network will be explained, then its implementation will be described. A campaign of measurements is presented, which was carried out to test the fitness of LoRaTMas an outdoor connectivity technology, of PLC as an indoor solution and globally assessing the performance of our network.

  @incollection{0f4de0c9610ea75c01611ea72bfe129f,
  author = {Ghiasimonfared, Alireza and Marcuzzi, Francesco and Righini, Davide and Tonello, Andrea M.},
  title = {{Development of a Hybrid LoRa/G3-PLC IoT Sensing Network: an Application Oriented Approach}},
  booktitle = {IEEE International Conference on Smart Grid Communications (SmartGridComm2017)},
  publisher = {IEEE},
  year = {2017},
  abstract = {Nowadays, IoT and smart Grids are trending topics in research and technology applications: in fact the market for both services and products were in the hundred billions of dollars yearly in 2016. This work describes how the LoRaTMand G3-PLC technologies are brought together to create a hybrid sensor network testbed to deliver IoT applications in a campus of ten buildings, through a business model approach. The idea derives from the pursuit of the creation of an added value for a real service: in a campus owned by a private renter, an internal sensor network can be an opportunistic tool for the improvement of energy management, control and energy consumption metering.The reader will be guided through the process steps that the team took in order to obtain the results here presented: first the architectural structure of the network will be explained, then its implementation will be described. A campaign of measurements is presented, which was carried out to test the fitness of LoRaTMas an outdoor connectivity technology, of PLC as an indoor solution and globally assessing the performance of our network.},
  address = {Piscataway (NJ)},
  isbn = {978-1-5386-4055-5},
  url = {http://sgc2017.ieee-smartgridcomm.org/program},
  }

• J. Simonjan and B. Rinner, “Distributed Visual Sensor Network Calibration based on Joint Object Detections,” in Proceedings of the IEEE International Conference on Distributed Computing in Sensor Systems, Piscataway (NJ): IEEE, 2017, p. 1–8.
  [BibTeX]

  @incollection{0f4de0c95d328fd5015d358fb3440047,
  author = {Simonjan, Jennifer and Rinner, Bernhard},
  title = {{Distributed Visual Sensor Network Calibration based on Joint Object Detections}},
  booktitle = {Proceedings of the IEEE International Conference on Distributed Computing in Sensor Systems},
  publisher = {IEEE},
  year = {2017},
  pages = {1--8},
  address = {Piscataway (NJ)},
  }

2016

• A. Monacchi and W. Elmenreich, “Assisted energy management in smart microgrids,” Journal of Ambient Intelligence and Humanized Computing, vol. 7, iss. 6, p. 901–913, 2016. doi:10.1007/s12652-016-0392-1
  [BibTeX] [Download PDF]

  @article{0f4de0c759e005ab0159e73442ec0b00,
  author = {Monacchi, Andrea and Elmenreich, Wilfried},
  title = {{Assisted energy management in smart microgrids}},
  journal = {Journal of Ambient Intelligence and Humanized Computing},
  year = {2016},
  doi = {10.1007/s12652-016-0392-1},
  volume = {7},
  number = {6},
  pages = {901--913},
  month = {12},
  url = {https://arxiv.org/pdf/1606.01949},
  }

• T. Szkaliczki, A. Sobe, and W. Elmenreich, “Convergence and monotonicity of the hormone levels in a hormone-based content delivery system,” Central European Journal of Operations Research, vol. 24, iss. 4, p. 939–964, 2016. doi:10.1007/s10100-015-0412-9
  [BibTeX] [Download PDF]

  @article{0f4de0c9518c7b9601518e6886750072,
  author = {Szkaliczki, Tibor and Sobe, Anita and Elmenreich, Wilfried},
  title = {{Convergence and monotonicity of the hormone levels in a hormone-based content delivery system}},
  journal = {Central European Journal of Operations Research},
  year = {2016},
  doi = {10.1007/s10100-015-0412-9},
  volume = {24},
  number = {4},
  pages = {939--964},
  month = {12},
  url = {https://mobile.aau.at/publications/szkaliczki\_Convergence\_and\_monotonicity\_of\_the\_hormone\_levels\_in\_a\_hormone-based\_content\_deli},
  }

• S. C. Akkaladevi, M. Plasch, J. Eitzinger, S. C. Maddukuri, and B. Rinner, “Towards Learning to Handle Deviations using User Preferences in a Human Robot Collaboration Scenario,” in Proceedings of the International Conference on Human Computer Interaction, Berlin: Springer, 2016, p. 1–12.
  [BibTeX]

  @incollection{0f4de0c9587bf1570158813dd8df0027,
  author = {Akkaladevi, Sharath Chandra and Plasch, Matthias and Eitzinger, Josef and Maddukuri, Sriniwas Chowdhary and Rinner, Bernhard},
  title = {{Towards Learning to Handle Deviations using User Preferences in a Human Robot Collaboration Scenario}},
  booktitle = {Proceedings of the International Conference on Human Computer Interaction},
  publisher = {Springer},
  year = {2016},
  pages = {1--12},
  address = {Berlin},
  month = {12},
  }

• D. Errath and W. Elmenreich, “Metering Systems for Office and Home Application with Real-Time Intervention,” in 1st AARC PHD Students Conference on Environment and Sustainable Energy, D. Mlaka, Ed., Maribor: Mariborska Knjižnica, 2016, p. 9–13.
  [BibTeX]

  @incollection{0f4de0c959e1b14d0159ef84c90a054e,
  author = {Errath, Daniela and Elmenreich, Wilfried},
  title = {{Metering Systems for Office and Home Application with Real-Time Intervention}},
  booktitle = {1st AARC PHD Students Conference on Environment and Sustainable Energy},
  publisher = {Mariborska Knjižnica},
  year = {2016},
  editor = {Damir Mlaka},
  pages = {9--13},
  address = {Maribor},
  month = {11},
  isbn = {978-961-6567-22-0},
  }

• M. Girotto and A. M. Tonello, “Orthogonal Design of Cyclic Block Filtered Multitone Modulation,” IEEE Transactions on Communications, vol. 64, iss. 11, p. 4667–4679, 2016. doi:10.1109/TCOMM.2016.2606624
  [BibTeX] [Abstract] [Download PDF]
  

  The orthogonal design of a cyclic block filtered multititone modulation (CB-FMT) system is addressed. CB-FMT is a filter bank modulation scheme that uses frequency confined prototype pulses, similarly to FMT. Differently from FMT, where the linear convolution is used, the cyclic convolution is exploited in CB-FMT. This allows to efficiently implement the system via a concatenation of discrete Fourier transforms. The necessary and sufficient orthogonality conditions are derived in time domain and frequency domain. Then, these conditions are expressed in matrix form, and the prototype pulse coefficients are parameterized with hyper-spherical coordinates. The effect of a linear time-variant transmission medium is discussed.In such a scenario, the optimal filter bank orthogonal design is considered with the objective of maximizing either the in-band-to-out-band sub-channel energy ratio or the achievable rate. Numerical results and comparisons show the performance improvements attainable with several designed optimal pulses also with respect to the use of the baseline root-raised-cosine pulse.

  @article{0f4de0c9576abeb201576b56649200d2,
  author = {Girotto, Mauro and Tonello, Andrea M.},
  title = {{Orthogonal Design of Cyclic Block Filtered Multitone Modulation}},
  journal = {IEEE Transactions on Communications},
  year = {2016},
  abstract = {The orthogonal design of a cyclic block filtered multititone modulation (CB-FMT) system is addressed. CB-FMT is a filter bank modulation scheme that uses frequency confined prototype pulses, similarly to FMT. Differently from FMT, where the linear convolution is used, the cyclic convolution is exploited in CB-FMT. This allows to efficiently implement the system via a concatenation of discrete Fourier transforms. The necessary and sufficient orthogonality conditions are derived in time domain and frequency domain. Then, these conditions are expressed in matrix form, and the prototype pulse coefficients are parameterized with hyper-spherical coordinates. The effect of a linear time-variant transmission medium is discussed.In such a scenario, the optimal filter bank orthogonal design is considered with the objective of maximizing either the in-band-to-out-band sub-channel energy ratio or the achievable rate. Numerical results and comparisons show the performance improvements attainable with several designed optimal pulses also with respect to the use of the baseline root-raised-cosine pulse.},
  doi = {10.1109/TCOMM.2016.2606624},
  volume = {64},
  number = {11},
  pages = {4667--4679},
  month = {11},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7562543},
  }

• J. F. Schmidt, U. Schilcher, and C. Bettstetter, “Exact bit error rate expressions for interference-limited Poisson networks,” IET Electronics Letters, vol. 52, iss. 23, p. 1961–1963, 2016. doi:10.1049/el.2016.2688
  [BibTeX] [Download PDF]

  @article{0f4de0c75824a67b015829d6e2300250,
  author = {Schmidt, Jorge Friedrich and Schilcher, Udo and Bettstetter, Christian},
  title = {{Exact bit error rate expressions for interference-limited Poisson networks}},
  journal = {IET Electronics Letters},
  year = {2016},
  doi = {10.1049/el.2016.2688},
  volume = {52},
  number = {23},
  pages = {1961--1963},
  month = {11},
  url = {http://digital-library.theiet.org/deliver/fulltext/el/52/23/EL.2016.2688.pdf;jsessionid=10hhsq3ekd48i.x-iet-live-01?itemId=/cont},
  }

• D. Shrestha, A. M. Tonello, X. Mestre, and M. Payaro, “Simultaneous cancellation of narrow band interference and impulsive noise in PLC systems,” in IEEE International Conference on Smart Grid Communications (SmartGridComm 2016), Piscataway (NJ): IEEE, 2016, p. 1–6. doi:10.1109/SmartGridComm.2016.7778782
  [BibTeX] [Abstract] [Download PDF]
  

  The two major sources of disturbances for an efficient and reliable data transmission through power lines, known as power line communication (PLC), are impulsive noise (IN) and narrow band interference (NBI). In this paper, we propose an algorithm to cancel the IN and NBI simultaneously for an OFDM based PLC system. The proposed method exploits the duality of the problem, where the IN is sparse in the time domain and the NBI is sparse in the frequency domain. By virtue of this duality, we use multiple signal characterization (MUSIC) algorithm to estimate both the IN support (in time domain) and the frequency of NBI (in frequency domain). Furthermore, the minimum mean square error (MMSE) estimator is used to estimate the amplitude and phase of IN samples at the determined locations and the least square (LS) estimator is used to estimate the amplitude and phase of the NBI. Finally, the estimated IN and NBI are canceled out from the received signal, providing noise mitigated samples for demodulation. The performance of the proposed scheme is verified via numerical simulations.

  @incollection{0f4de0c959d545f80159d68575ef0639,
  author = {Shrestha, Deep and Tonello, Andrea M. and Mestre, Xavier and Payaro, Miquel},
  title = {{Simultaneous cancellation of narrow band interference and impulsive noise in PLC systems}},
  booktitle = {IEEE International Conference on Smart Grid Communications (SmartGridComm 2016)},
  publisher = {IEEE},
  year = {2016},
  abstract = {The two major sources of disturbances for an efficient and reliable data transmission through power lines, known as power line communication (PLC), are impulsive noise (IN) and narrow band interference (NBI). In this paper, we propose an algorithm to cancel the IN and NBI simultaneously for an OFDM based PLC system. The proposed method exploits the duality of the problem, where the IN is sparse in the time domain and the NBI is sparse in the frequency domain. By virtue of this duality, we use multiple signal characterization (MUSIC) algorithm to estimate both the IN support (in time domain) and the frequency of NBI (in frequency domain). Furthermore, the minimum mean square error (MMSE) estimator is used to estimate the amplitude and phase of IN samples at the determined locations and the least square (LS) estimator is used to estimate the amplitude and phase of the NBI. Finally, the estimated IN and NBI are canceled out from the received signal, providing noise mitigated samples for demodulation. The performance of the proposed scheme is verified via numerical simulations.},
  doi = {10.1109/SmartGridComm.2016.7778782},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {11},
  isbn = {978-1-5090-4075-9},
  url = {http://ieeexplore.ieee.org/document/7778782/},
  }

• F. Passerini and A. M. Tonello, “Novel Grid Topology Estimation Technique Exploiting PLC Modems,” in Workshop on Power Line Communications 2016 (WSPLC 2016), , 2016, p. 1–2.
  [BibTeX] [Abstract] [Download PDF]
  

  Power Line Communications (PLC) have been extensively deployed both for in-home high speed networking and for smart grid operation management. In this latter context, PLC are used as a mean of controlling and monitoring the power flow of the grid. They enable the exange of information among devices as meters as well as monitoring/control devices and switches. A fundamental requirement is the knowledge of the network topology, which might not be complete or might not properly track the topological changes due to, for instance, the commutation of power switches. In this work, we present a novel method to derive the topology of a distribution network that exploits the capability of PLC modems to measure the network admittance, and we report the most significant results.

  @incollection{0f4de0c757b243cb0157b3de0cbd0098,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{Novel Grid Topology Estimation Technique Exploiting PLC Modems}},
  booktitle = {Workshop on Power Line Communications 2016 (WSPLC 2016)},
  year = {2016},
  abstract = {Power Line Communications (PLC) have been extensively deployed both for in-home high speed networking and for smart grid operation management. In this latter context, PLC are used as a mean of controlling and monitoring the power flow of the grid. They enable the exange of information among devices as meters as well as monitoring/control devices and switches. A fundamental requirement is the knowledge of the network topology, which might not be complete or might not properly track the topological changes due to, for instance, the commutation of power switches. In this work, we present a novel method to derive the topology of a distribution network that exploits the capability of PLC modems to measure the network admittance, and we report the most significant results.},
  pages = {1--2},
  month = {10},
  url = {http://www.wsplc2016.fr/wp-content/uploads/2016/05/WSPLC2016\_5.5.pdf},
  }

• D. Righini and A. M. Tonello, “Broadband MIMO Couplers Characterization and Comparison,” in Workshop on Power Line Communications 2016 (WSPLC 2016), , 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  This paper focuses on MIMO Power Line Communication (PLC) to provide increased performance. In MIMO PLC,appropriate coupling methods are necessary in order to enable the effective injection of the signal through the PLCchannel [1]. In the literature, different kind of couplers are proposed [2],[3]. In this paper, we want to characterize inan analytic way strengths and weaknesses of each coupler design (topology) from an electrical circuit perspective. Wedwell on the description and analysis of the three main and common configurations used for the MIMO couplers: star (S),triangle (∆) and T. For each configuration, we study different connection formats for the input generators and output loads:star, triangle and T. Furthermore, we consider MIMO 2×3, 2×4, 3×3, 3×4 architectures, where the fourth received signal isreferred to as common mode signal.The purpose in this study is to clearly define the equations that describe the output signals as a function of the inputsignals and the impedances present in the circuit. This is achieved analyzing the transfer function of the circuit under survey.A model is presented to be able to identify how much the nonidealities of components, such as, uncoupling/protectiondevices and filters, affect the coupling and cross coupling between signals. All these components add, inside the transmissionchain, undesired effects in the signal of interest. Our aim is to define a procedure that, knowing the characteristics of thesenonideal components, allows us to compensate this effects working on circuit parts and signals.Moreover, the effect of the line impedance variation on the coupled voltage is investigated. This is an important aspectsince the line impedance may have a time variant behavior as a result of network loads that are time variant [4]. In particular,we consider the impedance mismatch problem [5] under a source load constraint with distinct coupler topologies: star,triangle and T.Finally, a comparison of the best combination of TX-RX coupler configurations is carried out.

  @incollection{0f4de0c959d545f80159d698d74606c2,
  author = {Righini, Davide and Tonello, Andrea M.},
  title = {{Broadband MIMO Couplers Characterization and Comparison}},
  booktitle = {Workshop on Power Line Communications 2016 (WSPLC 2016)},
  year = {2016},
  abstract = {This paper focuses on MIMO Power Line Communication (PLC) to provide increased performance. In MIMO PLC,appropriate coupling methods are necessary in order to enable the effective injection of the signal through the PLCchannel [1]. In the literature, different kind of couplers are proposed [2],[3]. In this paper, we want to characterize inan analytic way strengths and weaknesses of each coupler design (topology) from an electrical circuit perspective. Wedwell on the description and analysis of the three main and common configurations used for the MIMO couplers: star (S),triangle (∆) and T. For each configuration, we study different connection formats for the input generators and output loads:star, triangle and T. Furthermore, we consider MIMO 2x3, 2x4, 3x3, 3x4 architectures, where the fourth received signal isreferred to as common mode signal.The purpose in this study is to clearly define the equations that describe the output signals as a function of the inputsignals and the impedances present in the circuit. This is achieved analyzing the transfer function of the circuit under survey.A model is presented to be able to identify how much the nonidealities of components, such as, uncoupling/protectiondevices and filters, affect the coupling and cross coupling between signals. All these components add, inside the transmissionchain, undesired effects in the signal of interest. Our aim is to define a procedure that, knowing the characteristics of thesenonideal components, allows us to compensate this effects working on circuit parts and signals.Moreover, the effect of the line impedance variation on the coupled voltage is investigated. This is an important aspectsince the line impedance may have a time variant behavior as a result of network loads that are time variant [4]. In particular,we consider the impedance mismatch problem [5] under a source load constraint with distinct coupler topologies: star,triangle and T.Finally, a comparison of the best combination of TX-RX coupler configurations is carried out.},
  month = {10},
  url = {http://www.wsplc2016.fr/wp-content/uploads/2016/05/WSPLC2016\_1.2.pdf},
  }

• A. M. Tonello and F. Marcuzzi, “Statistical Assessment of PLC Networking for Front-Hauling in Small Radio Cells,” in Workshop on Power Line Communications 2016 (WSPLC 2016), , 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  The employment of power lines for communications (PLC) has been theorized almost a century ago; although the physicalmedium is not meant for data transmission, recent technical developments pushed the capacity boundary much higher thanexpected, allowing to consider PLC for new applications as the one considered in this contribution, i.e., as a solution for smallcell back/front-hauling. In principle, back-hauling for cellular networks via PLC is very attractive given how pervasive thepower line infrastructure is. Telecom operators are looking for solutions that can handle the traffic increase which is doublingevery year. This calls for improvements of both cellular systems and front-hauling technologies that have to bridge the radionetwork with the core network. Small cells are currently advocated as the solution to spatially fragment the network and offerhigh capacity in densely populated areas; this is also due to the availability of spectrum at high frequency (mmWave links)which inherently offers large bandwidth but forces the cells to become smaller due to the short distance coverage. Therefore,it appears that mobile operators may eventually have to deploy an order of magnitude more (small) cells compared to existingnetworks having macro cells. This translates in a high density cellular network that poses more challenges for the back-haul.

  @incollection{0f4de0c959d545f80159d6918ef80683,
  author = {Tonello, Andrea M. and Marcuzzi, Francesco},
  title = {{Statistical Assessment of PLC Networking for Front-Hauling in Small Radio Cells}},
  booktitle = {Workshop on Power Line Communications 2016 (WSPLC 2016)},
  year = {2016},
  abstract = {The employment of power lines for communications (PLC) has been theorized almost a century ago; although the physicalmedium is not meant for data transmission, recent technical developments pushed the capacity boundary much higher thanexpected, allowing to consider PLC for new applications as the one considered in this contribution, i.e., as a solution for smallcell back/front-hauling. In principle, back-hauling for cellular networks via PLC is very attractive given how pervasive thepower line infrastructure is. Telecom operators are looking for solutions that can handle the traffic increase which is doublingevery year. This calls for improvements of both cellular systems and front-hauling technologies that have to bridge the radionetwork with the core network. Small cells are currently advocated as the solution to spatially fragment the network and offerhigh capacity in densely populated areas; this is also due to the availability of spectrum at high frequency (mmWave links)which inherently offers large bandwidth but forces the cells to become smaller due to the short distance coverage. Therefore,it appears that mobile operators may eventually have to deploy an order of magnitude more (small) cells compared to existingnetworks having macro cells. This translates in a high density cellular network that poses more challenges for the back-haul.},
  month = {10},
  url = {http://www.wsplc2016.fr/wp-content/uploads/2016/05/WSPLC2016\_5.2.pdf},
  }

• P. Grippa, “Decision Making in a UAV-Based Delivery System with Impatient Customers,” in Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Piscataway (NJ): IEEE, 2016. doi:10.1109/IROS.2016.7759739
  [BibTeX] [Abstract] [Download PDF]
  

  This article introduces a framework to computedecision making policies (mission planning) for a UAV-baseddelivery system serving impatient customers. Customers arriveon a finite number of locations L separated by arbitrary butfixed distances and eventually leave if not served. Policies seekto minimize the average net cost (maximize the average netrevenue), i.e. loss from customers’ abandonment deprived ofthe revenue from successful services. We introduce a novelmodel for the stochastic and dynamic pickup and deliveryproblem based on semi-Markov decision processes, and showthe dependence of the optimal average net cost on the minimumdistance between locations δ. Furthermore, we propose afeature-based state aggregation method to overcome the curseof dimensionality due to the exact modeling. The selection ofrelevant features is based on their correlation with the optimalperformance. We show that the distance to the nearest pickuplocation dominates on other features for almost all δ. Based onthis observation, we introduce the policy nearest neighbor ornone, a policy with computational complexity O(L 3 ) in manycases of interest. We show that this policy performs considerablybetter that the nearest neighbor (greedy) policy, and reachesthe optimum for some δ.

  @incollection{0f4de0c758cdaf640158ce517f1c0144,
  author = {Grippa, Pasquale},
  title = {{Decision Making in a UAV-Based Delivery System with Impatient Customers}},
  booktitle = {Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
  publisher = {IEEE},
  year = {2016},
  abstract = {This article introduces a framework to computedecision making policies (mission planning) for a UAV-baseddelivery system serving impatient customers. Customers arriveon a finite number of locations L separated by arbitrary butfixed distances and eventually leave if not served. Policies seekto minimize the average net cost (maximize the average netrevenue), i.e. loss from customers’ abandonment deprived ofthe revenue from successful services. We introduce a novelmodel for the stochastic and dynamic pickup and deliveryproblem based on semi-Markov decision processes, and showthe dependence of the optimal average net cost on the minimumdistance between locations δ. Furthermore, we propose afeature-based state aggregation method to overcome the curseof dimensionality due to the exact modeling. The selection ofrelevant features is based on their correlation with the optimalperformance. We show that the distance to the nearest pickuplocation dominates on other features for almost all δ. Based onthis observation, we introduce the policy nearest neighbor ornone, a policy with computational complexity O(L 3 ) in manycases of interest. We show that this policy performs considerablybetter that the nearest neighbor (greedy) policy, and reachesthe optimum for some δ.},
  doi = {10.1109/IROS.2016.7759739},
  address = {Piscataway (NJ)},
  month = {10},
  isbn = {978-1-5090-3762-9},
  url = {http://ieeexplore.ieee.org/document/7759739/},
  }

• R. Muzaffar, E. Yanmaz, C. Bettstetter, and A. Cavallaro, “Application-Layer Rate-Adaptive Multicast Video Streaming over 802.11 for Mobile Devices,” in Proceedings of the ACM Multimedia Conference, New York (NY): ACM Press, 2016, p. 506–510. doi:10.1145/2964284.2967272
  [BibTeX] [Abstract] [Download PDF]
  

  Multicast video streaming over IEEE 802.11 is unreliable due to the lack of feedback from receivers. High data rates and variable link conditions require feedback from the receivers for link estimation to improve reliability and rate adaptation accordingly. In this paper, we validate on a test platform an application-layer rate-adaptive video multicast streaming framework using an 802.11 ad-hoc network applicable for mobile senders and receivers. Experimental results serve as a proof of concept and show the performance in terms of goodput, delay, packet loss, and received video quality.

  @incollection{0f4de0c759d669ee0159db73d2f50234,
  author = {Muzaffar, Raheeb and Yanmaz, Evsen and Bettstetter, Christian and Cavallaro, Andrea},
  title = {{Application-Layer Rate-Adaptive Multicast Video Streaming over 802.11 for Mobile Devices}},
  booktitle = {Proceedings of the ACM Multimedia Conference},
  publisher = {ACM Press},
  year = {2016},
  abstract = {Multicast video streaming over IEEE 802.11 is unreliable due to the lack of feedback from receivers. High data rates and variable link conditions require feedback from the receivers for link estimation to improve reliability and rate adaptation accordingly. In this paper, we validate on a test platform an application-layer rate-adaptive video multicast streaming framework using an 802.11 ad-hoc network applicable for mobile senders and receivers. Experimental results serve as a proof of concept and show the performance in terms of goodput, delay, packet loss, and received video quality.},
  doi = {10.1145/2964284.2967272},
  pages = {506--510},
  address = {New York (NY)},
  month = {10},
  isbn = {978-1-4503-3603-1},
  url = {http://dl.acm.org/citation.cfm?id=2967272},
  }

• H. T. Haider, O. H. See, and W. Elmenreich, “Residential demand response scheme based on adaptive consumption level pricing,” Energy, vol. 113, p. 301–308, 2016. doi:10.1016/j.energy.2016.07.052
  [BibTeX] [Download PDF]

  @article{0f4de0c759e005ab0159e73d62490b22,
  author = {Haider, Haider Tarish and See, Ong Hang and Elmenreich, Wilfried},
  title = {{Residential demand response scheme based on adaptive consumption level pricing}},
  journal = {Energy},
  year = {2016},
  doi = {10.1016/j.energy.2016.07.052},
  volume = {113},
  pages = {301--308},
  month = {10},
  url = {http://www.sciencedirect.com/science/article/pii/S0360544216309768},
  }

• D. D. Egarter, M. Rabl-Pöchacker, and W. Elmenreich, “Complexity of Power Draws for Load Disaggregation,” in Proceedings of the 5th D-A-CH+ Energy Informatics Conference in conjunction with 7th Symposium on Communications for Energy Systems (ComForEn), F. Kupzog, Ed., Wien: Österreichischer Verband für Elektrotechnik (OVE), 2016, p. 81–92.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c95e38dd44015e4c310ff10130,
  author = {Egarter, Dominik Daniel and Rabl-Pöchacker, Manfred and Elmenreich, Wilfried},
  title = {{Complexity of Power Draws for Load Disaggregation}},
  booktitle = {Proceedings of the 5th D-A-CH+ Energy Informatics Conference in conjunction with 7th Symposium on Communications for Energy Systems (ComForEn)},
  publisher = {Österreichischer Verband für Elektrotechnik (OVE)},
  year = {2016},
  editor = {Friederich Kupzog},
  pages = {81--92},
  address = {Wien},
  month = {9},
  isbn = {978-3-85133-090-8},
  url = {https://arxiv.org/pdf/1501.02954},
  }

• C. Klemenjak and P. Goldsborough, “Non-Intrusive Load Monitoring: A Review and Outlook,” in INFORMATIK 2016, H. C. Mayr and M. Pinzger, Eds., Bonn: Gesellschaft für Informatik e.V., 2016, p. 2199–2210.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9579f0b8701579fb509480036,
  author = {Klemenjak, Christoph and Goldsborough, Peter},
  title = {{Non-Intrusive Load Monitoring: A Review and Outlook}},
  booktitle = {INFORMATIK 2016},
  publisher = {Gesellschaft für Informatik e.V.},
  year = {2016},
  editor = {Heinrich C. Mayr and Martin Pinzger},
  pages = {2199--2210},
  address = {Bonn},
  month = {9},
  isbn = {978-3-88579-653-4},
  url = {https://128.84.21.199/pdf/1610.01191v1},
  }

• A. Papaiz and A. M. Tonello, “Azimuth and Elevation Dynamic Tracking of UAVs via 3-Axial ULA and Particle Filtering,” International Journal of Aerospace Engineering, vol. 2016, p. 1–9, 2016. doi:10.1155/2016/7630950
  [BibTeX] [Abstract] [Download PDF]
  

  Unmanned Aerial Vehicles (UAVs) localization has become crucial in recent years, mainly for navigation or self-positioning and for UAV based security monitoring and surveillance. In this paper, azimuth and elevation radio positioning of UAVs are considered. The localization is based on multiple differential phase-of-arrival measures exploiting a 3-Axial Uniform Linear Array of antennas. An ad hoc particle filtering algorithm is applied to improve the positioning performance using a dynamic motion model. A novel adaptive algorithm, namely, Particles Swarm Adaptive Scattering (PSAS), is proposed to increment the algorithm stability and precision. To assess performance a Confined Area Random Aerial Trajectory Emulator (CARATE) algorithm has been developed to generate actual paths of flying UAVs. The algorithm performance is compared with the baseline method and with the average trajectory Cramér Rao lower bound to show the effectiveness of the proposed algorithm.

  @article{0f4de0c7556e537101556eb10bb60015,
  author = {Papaiz, Andrea and Tonello, Andrea M.},
  title = {{Azimuth and Elevation Dynamic Tracking of UAVs via 3-Axial ULA and Particle Filtering}},
  journal = {International Journal of Aerospace Engineering},
  year = {2016},
  abstract = {Unmanned Aerial Vehicles (UAVs) localization has become crucial in recent years, mainly for navigation or self-positioning and for UAV based security monitoring and surveillance. In this paper, azimuth and elevation radio positioning of UAVs are considered. The localization is based on multiple differential phase-of-arrival measures exploiting a 3-Axial Uniform Linear Array of antennas. An ad hoc particle filtering algorithm is applied to improve the positioning performance using a dynamic motion model. A novel adaptive algorithm, namely, Particles Swarm Adaptive Scattering (PSAS), is proposed to increment the algorithm stability and precision. To assess performance a Confined Area Random Aerial Trajectory Emulator (CARATE) algorithm has been developed to generate actual paths of flying UAVs. The algorithm performance is compared with the baseline method and with the average trajectory Cramér Rao lower bound to show the effectiveness of the proposed algorithm.},
  doi = {10.1155/2016/7630950},
  volume = {2016},
  pages = {1--9},
  month = {9},
  url = {https://www.hindawi.com/journals/ijae/2016/7630950/},
  }

• S. Shaikh and A. M. Tonello, “Localization Based on Angle of Arrival in EM Lens-Focusing Massive MIMO,” in IEEE International Conference on Consumer Electronics – ICCE 2016, Piscataway (NJ): IEEE, 2016, p. 1–5. doi:10.1109/ICCE-Berlin.2016.7684736
  [BibTeX] [Abstract] [Download PDF]
  

  This paper proposes a novel algorithm for user localization using the angle of arrival (AoA) concept. We propose to combine the electromagnetic (EM) lens with the massive multiple-input multiple-output (MIMO) antenna array at the base station (BS). EM lens have the advantage of focusing the signal power on a subset of antennas as a function of the AoA. Thus, the provide an opportunity to estimate the location of user more efficiently with reduced number of radio frequency (RF) chains and computational costs. The obtained numerical results have shown that the EM lens based massive MIMO is capable of providing better AoA estimation.

  @incollection{0f4de0c7556e537101556ebace6b003b,
  author = {Shaikh, Sarmad and Tonello, Andrea M.},
  title = {{Localization Based on Angle of Arrival in EM Lens-Focusing Massive MIMO}},
  booktitle = {IEEE International Conference on Consumer Electronics - ICCE 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {This paper proposes a novel algorithm for user localization using the angle of arrival (AoA) concept. We propose to combine the electromagnetic (EM) lens with the massive multiple-input multiple-output (MIMO) antenna array at the base station (BS). EM lens have the advantage of focusing the signal power on a subset of antennas as a function of the AoA. Thus, the provide an opportunity to estimate the location of user more efficiently with reduced number of radio frequency (RF) chains and computational costs. The obtained numerical results have shown that the EM lens based massive MIMO is capable of providing better AoA estimation.},
  doi = {10.1109/ICCE-Berlin.2016.7684736},
  pages = {1--5},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-5090-2096-6},
  url = {http://ieeexplore.ieee.org/document/7684736/},
  }

• E. Yanmaz, M. Quaritsch, S. Yahyanejad, B. Rinner, H. Hellwagner, and C. Bettstetter, “Communication and Coordination for Drone Networks,” in Proceedings of the EAI International Conference on Ad Hoc Networks (ADHOCNETS), , 2016, p. 1–12. doi:10.1007/978-3-319-51204-4_7
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9587bf15701588133ebba0006,
  author = {Yanmaz, Evsen and Quaritsch, Markus and Yahyanejad, Saeed and Rinner, Bernhard and Hellwagner, Hermann and Bettstetter, Christian},
  title = {{Communication and Coordination for Drone Networks}},
  booktitle = {Proceedings of the EAI International Conference on Ad Hoc Networks (ADHOCNETS)},
  year = {2016},
  doi = {10.1007/978-3-319-51204-4\_7},
  pages = {1--12},
  month = {9},
  isbn = {978-3-319-51204-4},
  url = {http://dx.doi.org/10.1007/978-3-319-51204-4\_7},
  }

• O. Khalid, A. Cavallaro, and B. Rinner, “Detecting tracking errors via forecasting,” in Proceedings of the British Machine Vision Conference (BMVC), The British Machine Vision Association and Society for Pattern Recognition, 2016, p. 1–12.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c756d5c36c0156e4822fa702f8,
  author = {Khalid, Obaidullah and Cavallaro, Andrea and Rinner, Bernhard},
  title = {{Detecting tracking errors via forecasting}},
  booktitle = {Proceedings of the British Machine Vision Conference (BMVC)},
  publisher = {The British Machine Vision Association and Society for Pattern Recognition },
  year = {2016},
  pages = {1--12},
  month = {9},
  url = {https://pervasive.aau.at/BR/pubs/2016/Khalid\_BMVC2016.pdf},
  }

• M. Michalopoulou, M. Petrova, M. Rappaport, and P. Mähönen, “Employing Minority Games in self-organizing wireless networks: Dynamic channel allocation,” in Proc. Int. Wireless Communications and Mobile Computing Conference (IWCMC), Piscataway (NJ): IEEE, 2016. doi:10.1109/IWCMC.2016.7577136
  [BibTeX] [Abstract] [Download PDF]
  

  Designing distributed protocols with limited requirements for exchange of feedback information between the nodes is a key element in the development of cognitive and self-organizing ad hoc networks. We argue that the Minority Game (MG) and its variations can constitute useful tools towards this direction. In particular, the MG formulation is well suited for addressing a variety of resource allocation problems in self-organizing wireless networks. In this paper we illustrate the employment of MGs by presenting a paradigm of an MG-based model for dynamic channel allocation.

  @incollection{0f4de0c75886089501588b79df22010b,
  author = {Michalopoulou, Maria and Petrova, Marina and Rappaport, Micha and Mähönen, Petri},
  title = {{Employing Minority Games in self-organizing wireless networks: Dynamic channel allocation}},
  booktitle = {Proc. Int. Wireless Communications and Mobile Computing Conference (IWCMC)},
  publisher = {IEEE},
  year = {2016},
  abstract = {Designing distributed protocols with limited requirements for exchange of feedback information between the nodes is a key element in the development of cognitive and self-organizing ad hoc networks. We argue that the Minority Game (MG) and its variations can constitute useful tools towards this direction. In particular, the MG formulation is well suited for addressing a variety of resource allocation problems in self-organizing wireless networks. In this paper we illustrate the employment of MGs by presenting a paradigm of an MG-based model for dynamic channel allocation.},
  doi = {10.1109/IWCMC.2016.7577136},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-5090-0304-4},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7577136},
  }

• S. C. Akkaladevi, M. Plasch, A. Pichler, and B. Rinner, ” Human Robot Collaboration to Reach a Common Goal in an Assembly Process,” in Proceedings of the European Conference on Artificial Intelligence, Amsterdam: IOS Press, 2016, p. 1–12. doi:10.3233/978-1-61499-682-8-3
  [BibTeX]

  @incollection{0f4de0c756d5c36c0156e4a462090376,
  author = {Akkaladevi, Sharath Chandra and Plasch, Matthias and Pichler, Andreas and Rinner, Bernhard},
  title = {{ Human Robot Collaboration to Reach a Common Goal in an Assembly Process}},
  booktitle = { Proceedings of the European Conference on Artificial Intelligence},
  publisher = {IOS Press},
  year = {2016},
  doi = {10.3233/978-1-61499-682-8-3},
  pages = {1--12},
  address = {Amsterdam},
  month = {9},
  }

• T. H. Nawaz, B. Rinner, and J. Ferrymen, ” User-centric, embedded vision-based human monitoring: A concept and a healthcare use case,” in Proceedings of the 10th International Conference on Distributed Smart Cameras, Piscataway (NJ): IEEE, 2016, p. 1–6.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c756d5c36c0156e48d6ed80318,
  author = {Nawaz, Tahir Habib and Rinner, Bernhard and Ferrymen, James},
  title = {{ User-centric, embedded vision-based human monitoring: A concept and a healthcare use case}},
  booktitle = {Proceedings of the 10th International Conference on Distributed Smart Cameras},
  publisher = {IEEE},
  year = {2016},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {9},
  url = {https://pervasive.aau.at/BR/pubs/2016/Nawaz\_ICDSC2016.pdf},
  }

• G. Reiner, C. Bettstetter, P. Grippa, A. Kercek, B. Oberegger, T. M. Schlechter, and E. Yanmaz, Integrated Inventory and Capacity Management for Cabin-Based Transport Systems, 2016.
  [BibTeX]

  @misc{0f4de0c956b7f8ea0156d16d46350385,
  author = {Reiner, Gerald and Bettstetter, Christian and Grippa, Pasquale and Kercek, Andreas and Oberegger, Bernhard and Schlechter, Thomas Marc and Yanmaz, Evsen},
  title = {Integrated Inventory and Capacity Management for Cabin-Based Transport Systems},
  howpublished = {Print},
  month = {8},
  year = {2016},
  isbn = {978-615-5270-25-3},
  }

• O. Sarwar, B. Rinner, and A. Cavallaro, ” Design Space Exploration for Adaptive Privacy Protection in Airborne Images,” in Proceedings of the IEEE International Conference on Advanced Video and Signal-based Surveillance (AVSS), Piscataway (NJ): IEEE, 2016, p. 1–6.
  [BibTeX]

  @incollection{0f4de0c756d5c36c0156e49e4e430358,
  author = {Sarwar, Omair and Rinner, Bernhard and Cavallaro, Andrea},
  title = {{ Design Space Exploration for Adaptive Privacy Protection in Airborne Images}},
  booktitle = { Proceedings of the IEEE International Conference on Advanced Video and Signal-based Surveillance (AVSS)},
  publisher = {IEEE},
  year = {2016},
  pages = {1--6},
  address = {Piscataway (NJ)},
  month = {8},
  }

• A. Monacchi, S. Zhevzhyk, and W. Elmenreich, “HEMS: a home energy market simulator,” Computer Science – Research and Development, vol. 31, iss. 3, p. 111–118, 2016. doi:10.1007/s00450-014-0291-7
  [BibTeX] [Download PDF]

  @article{0f4de0c94a05b01d014a0b6ccb9b094f,
  author = {Monacchi, Andrea and Zhevzhyk, Sergii and Elmenreich, Wilfried},
  title = {{HEMS: a home energy market simulator}},
  journal = {Computer Science - Research and Development},
  year = {2016},
  doi = {10.1007/s00450-014-0291-7},
  volume = {31},
  number = {3},
  pages = {111--118},
  month = {8},
  url = {https://mobile.aau.at/publications/monacchi-2014-A\_Home\_Energy\_Market\_Simulator.pdf},
  }

• J. Scherer and B. Rinner, ” Persistent Multi-UAV Surveillance with Energy and Communication Constraints,” in Proceedings of the IEEE International Conference on Automation Science and Engineering (CASE), Piscataway (NJ): IEEE, 2016, p. 1225–1230. doi:10.1109/COASE.2016.7743546
  [BibTeX]

  @incollection{0f4de0c756d5c36c0156e4958d0d033d,
  author = {Scherer, Jürgen and Rinner, Bernhard},
  title = {{ Persistent Multi-UAV Surveillance with Energy and Communication Constraints}},
  booktitle = {Proceedings of the IEEE International Conference on Automation Science and Engineering (CASE)},
  publisher = {IEEE},
  year = {2016},
  doi = {10.1109/COASE.2016.7743546},
  pages = {1225--1230},
  address = {Piscataway (NJ)},
  month = {8},
  isbn = {978-1-5090-2408-7},
  }

• P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, “Conclusions and Outlook,” in Self-aware Computing Systems, P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, Eds., Berlin: Springer, 2016, p. 297–300. doi:10.1007/978-3-319-39675-0_15
  [BibTeX]

  @incollection{0f4de0c756d5c36c0156e4c81f2d0429,
  author = {Lewis, Peter R. and Platzner, Marco and Rinner, Bernhard and Tørresen, Jim and Yao, Xin},
  title = {{Conclusions and Outlook}},
  booktitle = {Self-aware Computing Systems},
  publisher = {Springer},
  year = {2016},
  doi = {10.1007/978-3-319-39675-0\_15},
  editor = {Peter R. Lewis and Marco Platzner and Bernhard Rinner and Jim Tørresen and Xin Yao},
  pages = {297--300},
  address = {Berlin},
  month = {7},
  isbn = {978-3-319-39674-3},
  }

• D. Malone, L. Lampe, A. M. Tonello, and A. Dabak, Guest Editorial Power Line Communications and Its Integration With the Networking Ecosystem, 2016. doi:10.1109/JSAC.2016.2566198
  [BibTeX] [Download PDF]

  @misc{0f4de0c9592b88820159644733ec1116,
  doi = {10.1109/JSAC.2016.2566198},
  author = {Malone, David and Lampe, Lutz and Tonello, Andrea M. and Dabak, Anand},
  title = { Guest Editorial Power Line Communications and Its Integration With the Networking Ecosystem},
  howpublished = {Online},
  month = {7},
  year = {2016},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=7492321},
  }

• J. Simonjan, B. Dieber, and B. Rinner, “Middleware Support for Self-aware Computing Systems,” in Self-aware Computing Systems, P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, Eds., Berlin: Springer, 2016, p. 215–238. doi:10.1007/978-3-319-39675-0_11
  [BibTeX] [Download PDF]

  @incollection{0f4de0c756d5c36c0156e4c12be403de,
  author = {Simonjan, Jennifer and Dieber, Bernhard and Rinner, Bernhard},
  title = {{Middleware Support for Self-aware Computing Systems}},
  booktitle = {Self-aware Computing Systems},
  publisher = {Springer},
  year = {2016},
  doi = {10.1007/978-3-319-39675-0\_11},
  editor = {Peter R. Lewis and Marco Platzner and Bernhard Rinner and Jim Tørresen and Xin Yao},
  pages = {215--238},
  address = {Berlin},
  month = {7},
  isbn = {978-3-319-39674-3},
  url = {https://pervasive.aau.at/BR/pubs/2016/Simonjan\_SACS2016.pdf},
  }

• M. De Piante and A. M. Tonello, “On Impedance Matching in a Power Line Communication System,” IEEE Transactions on Circuits and Systems-II, vol. 63, iss. 7, p. 653–657, 2016. doi:10.1109/TCSII.2016.2530218
  [BibTeX] [Abstract] [Download PDF]
  

  Abstract:Impedance matching plays an important role in a power-line-communication system. We investigate the effect on the signal-to-noise ratio at the receiver and on the system capacity of three different impedance matching criteria at the transmitter, assuming broad-band communication. We show that optimal impedance matching shall maximize the amplitude of the signal voltage at the channel input port. Since the line impedance exhibits highly frequency-dependent behavior, simplified impedance matching criteria are also proposed.

  @article{0f4de0c751c3c9060151c45c7e6500ab,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{On Impedance Matching in a Power Line Communication System}},
  journal = {IEEE Transactions on Circuits and Systems-II},
  year = {2016},
  abstract = {Abstract:Impedance matching plays an important role in a power-line-communication system. We investigate the effect on the signal-to-noise ratio at the receiver and on the system capacity of three different impedance matching criteria at the transmitter, assuming broad-band communication. We show that optimal impedance matching shall maximize the amplitude of the signal voltage at the channel input port. Since the line impedance exhibits highly frequency-dependent behavior, simplified impedance matching criteria are also proposed.},
  doi = {10.1109/TCSII.2016.2530218},
  volume = {63},
  number = {7},
  pages = {653--657},
  month = {7},
  url = {http://ieeexplore.ieee.org/document/7407357/},
  }

• P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, “Self-aware Computing: Introduction and Motivation,” in Self-aware Computing Systems, P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, Eds., Berlin: Springer, 2016, p. 1–5. doi:10.1007/978-3-319-39675-0_1
  [BibTeX]

  @incollection{0f4de0c756d5c36c0156e4bcdd2c03bf,
  author = {Lewis, Peter R. and Platzner, Marco and Rinner, Bernhard and Tørresen, Jim and Yao, Xin},
  title = {{Self-aware Computing: Introduction and Motivation}},
  booktitle = {Self-aware Computing Systems},
  publisher = {Springer},
  year = {2016},
  doi = {10.1007/978-3-319-39675-0\_1},
  editor = {Peter R. Lewis and Marco Platzner and Bernhard Rinner and Jim Tørresen and Xin Yao},
  pages = {1--5},
  address = {Berlin},
  month = {7},
  isbn = {978-3-319-39674-3},
  }

• P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, Self-aware Computing Systems, Springer, 2016. doi:10.1007/978-3-319-39675-0
  [BibTeX]

  @book{0f4de0c756d5c36c0156e4aa650b039c,
  author = {Lewis, Peter R. and Platzner, Marco and Rinner, Bernhard and Tørresen, Jim and Yao, Xin},
  title = {{Self-aware Computing Systems}},
  publisher = {Springer},
  year = {2016},
  doi = {10.1007/978-3-319-39675-0},
  month = {7},
  isbn = {978-3-319-39674-3},
  }

• L. Esterle, J. Simonjan, G. Nebehay, R. Pflugfelder, G. F. Domínguez, and B. Rinner, “Self-aware Object Tracking in Multi-Camera Networks,” in Self-aware Computing Systems, P. R. Lewis, M. Platzner, B. Rinner, J. Tørresen, and X. Yao, Eds., Berlin: Springer, 2016, p. 261–277. doi:10.1007/978-3-319-39675-0_13
  [BibTeX] [Download PDF]

  @incollection{0f4de0c756d5c36c0156e4c3d9050402,
  author = {Esterle, Lukas and Simonjan, Jennifer and Nebehay, Georg and Pflugfelder, Roman and Domínguez, Gustavo Fernández and Rinner, Bernhard},
  title = {{Self-aware Object Tracking in Multi-Camera Networks}},
  booktitle = {Self-aware Computing Systems},
  publisher = {Springer},
  year = {2016},
  doi = {10.1007/978-3-319-39675-0\_13},
  editor = {Peter R. Lewis and Marco Platzner and Bernhard Rinner and Jim Tørresen and Xin Yao},
  pages = {261--277},
  address = {Berlin},
  month = {7},
  isbn = {978-3-319-39674-3},
  url = {https://pervasive.aau.at/BR/pubs/2016/Esterle\_SACS2016.pdf},
  }

• C. Cano, A. Pittolo, D. Malone, L. Lampe, A. M. Tonello, and A. Dabak, “State-of-the-art in Power Line Communications: from the Applications to the Medium,” IEEE Journal on Selected Areas in Communications (JSAC), vol. 34, iss. 7, p. 1935–1952, 2016. doi:10.1109/JSAC.2016.2566018
  [BibTeX] [Abstract] [Download PDF]
  

  In recent decades, power line communication (PLC) has attracted considerable attention from the research community and industry, as well as from regulatory and standardization bodies. In this paper, we provide an overview of both narrowband and broadband systems, covering potential applications, regulatory and standardization efforts, and recent research advancements in channel characterization, physical layer performance, medium access, and higher layer specifications and evaluations. We also identify the areas of current and further study that will enable the continued success of PLC technology.

  @article{0f4de0c951ce98610152174dbb741227,
  author = {Cano, Cristina and Pittolo, Alberto and Malone, David and Lampe, Lutz and Tonello, Andrea M. and Dabak, Anand},
  title = {{State-of-the-art in Power Line Communications: from the Applications to the Medium}},
  journal = {IEEE Journal on Selected Areas in Communications (JSAC)},
  year = {2016},
  abstract = {In recent decades, power line communication (PLC) has attracted considerable attention from the research community and industry, as well as from regulatory and standardization bodies. In this paper, we provide an overview of both narrowband and broadband systems, covering potential applications, regulatory and standardization efforts, and recent research advancements in channel characterization, physical layer performance, medium access, and higher layer specifications and evaluations. We also identify the areas of current and further study that will enable the continued success of PLC technology.},
  doi = {10.1109/JSAC.2016.2566018},
  volume = {34},
  number = {7},
  pages = {1935--1952},
  month = {7},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7467440},
  }

• M. Rappaport, “Energy-Aware Mobile Robot Exploration with Adaptive Decision Thresholds,” in Proc. Int. Symposium on Robotics, Frankfurt am Main: VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V., 2016, p. 236–243.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c955773b8b01557d59dba200a9,
  author = {Rappaport, Micha},
  title = {{Energy-Aware Mobile Robot Exploration with Adaptive Decision Thresholds}},
  booktitle = {Proc. Int. Symposium on Robotics},
  publisher = {VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. },
  year = {2016},
  pages = {236--243},
  address = {Frankfurt am Main},
  month = {6},
  isbn = {978-3-8007-4231-8},
  url = {https://mobile.aau.at/publications/rappaport-2016-isr-energy-awareness.pdf},
  }

• A. Pittolo, M. De Piante, F. Versolatto, and A. M. Tonello, “In-Vehicle Power Line Communication: Differences and Similarities Among the In-Car and the In-Ship Scenarios,” IEEE Vehicular Technology Magazine, vol. 11, iss. 2, p. 43–51, 2016. doi:10.1109/MVT.2015.2480098
  [BibTeX] [Abstract] [Download PDF]
  

  This article deals with power line communication (PLC) in the context of invehicle data networks. This technology can provide high-speed data connectivity via the exploitation of the existing power network, with clear potential benefits in terms of cost and weight reduction. The focus is on two scenarios: an electric car (EC) and a cruise ship. An overview of the wiring infrastructure and the network topology in these two scenarios is provided. The main findings reported in the literature related to the channel characteristics are reported. Noise is also assessed with emphasis on the EC context. New results from the statistical analysis of measurements made in a compact EC and in a large cruise ship are also shown. The channel characteristics are analyzed in terms of average channel gain (ACG), delay spread (DS), coherence bandwidth (CB), and achievable transmission rate. Finally, an overall comparison is made, highlighting similarities and differences while taking into account the conventional combustion engine car and the largely investigated in-home scenario.

  @article{0f4de0c951ce986101521748a8ad120e,
  author = {Pittolo, Alberto and De Piante, Marco and Versolatto, Fabio and Tonello, Andrea M.},
  title = {{In-Vehicle Power Line Communication: Differences and Similarities Among the In-Car and the In-Ship Scenarios}},
  journal = {IEEE Vehicular Technology Magazine},
  year = {2016},
  abstract = {This article deals with power line communication (PLC) in the context of invehicle data networks. This technology can provide high-speed data connectivity via the exploitation of the existing power network, with clear potential benefits in terms of cost and weight reduction. The focus is on two scenarios: an electric car (EC) and a cruise ship. An overview of the wiring infrastructure and the network topology in these two scenarios is provided. The main findings reported in the literature related to the channel characteristics are reported. Noise is also assessed with emphasis on the EC context. New results from the statistical analysis of measurements made in a compact EC and in a large cruise ship are also shown. The channel characteristics are analyzed in terms of average channel gain (ACG), delay spread (DS), coherence bandwidth (CB), and achievable transmission rate. Finally, an overall comparison is made, highlighting similarities and differences while taking into account the conventional combustion engine car and the largely investigated in-home scenario.},
  doi = {10.1109/MVT.2015.2480098},
  volume = {11},
  number = {2},
  pages = {43--51},
  month = {6},
  url = {http://ieeexplore.ieee.org/document/7445838/},
  }

• L. Lampe, A. M. Tonello, and T. Swart, Power Line Communications: principles, standards, applications from multimedia to smart grid, John Wiley & Sons. Ltd., 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  This second edition of Power Line Communications will show some adjustments in content including new material on PLC for home and industry, PLC for multimedia, PLC for smart grid and PLC for vehicles. Additional chapters include coverage of Channel Characterization, Electromagnetic Compatibility, Coupling, and Digital Transmission Techniques. This book will provide the reader with a wide coverage of the major developments within the field. With contributions from some of the most active researchers on PLC, the book brings together a wealth of international experts on specific PLC topics.

  @book{0f4de0c951ce9861015217569c101269,
  author = {Lampe, Lutz and Tonello, Andrea M. and Swart, Theo},
  title = {{Power Line Communications: principles, standards, applications from multimedia to smart grid}},
  publisher = {John Wiley \& Sons. Ltd.},
  year = {2016},
  abstract = {This second edition of Power Line Communications will show some adjustments in content including new material on PLC for home and industry, PLC for multimedia, PLC for smart grid and PLC for vehicles. Additional chapters include coverage of Channel Characterization, Electromagnetic Compatibility, Coupling, and Digital Transmission Techniques. This book will provide the reader with a wide coverage of the major developments within the field. With contributions from some of the most active researchers on PLC, the book brings together a wealth of international experts on specific PLC topics.},
  month = {6},
  isbn = {978-1-118-67671-4},
  url = {http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1118676718.html},
  }

• I. Haider, M. Höberl, and B. Rinner, “Trusted Sensors for Participatory Sensing and IoT Applications based on Physically Unclonable Functions,” in Proceedings of the 2nd ACM International Workshop on IoT Privacy, Trust, and Security, New York, NY: ACM – New York, 2016, p. 14–21. doi:10.1145/2899007.2899010
  [BibTeX] [Abstract] [Download PDF]
  

  With the emergence of the internet of things (IoT) and participatory sensing (PS) paradigms trustworthiness of remotely sensed data has become a vital research question. In this work, we present the design of a trusted sensor, which uses physically unclonable functions (PUFs) as anchor to ensure integrity, authenticity and non-repudiation guarantees on the sensed data. We propose trusted sensors for mobile devices to address the problem of potential manipulation of mobile sensors' readings by exploiting vulnerabilities of mobile device OS in participatory sensing for IoT applications. Preliminary results from our implementation of trusted visual sensor node show that the proposed security solution can be realized without consuming significant amount of resources of the sensor node.

  @incollection{0f4de0c9553029b3015535503fcd00ac,
  author = {Haider, Ihtesham and Höberl, Michael and Rinner, Bernhard},
  title = {{Trusted Sensors for Participatory Sensing and IoT Applications based on Physically Unclonable Functions}},
  booktitle = {Proceedings of the 2nd ACM International Workshop on IoT Privacy, Trust, and Security},
  publisher = {ACM - New York},
  year = {2016},
  abstract = {With the emergence of the internet of things (IoT) and participatory sensing (PS) paradigms trustworthiness of remotely sensed data has become a vital research question. In this work, we present the design of a trusted sensor, which uses physically unclonable functions (PUFs) as anchor to ensure integrity, authenticity and non-repudiation guarantees on the sensed data. We propose trusted sensors for mobile devices to address the problem of potential manipulation of mobile sensors\' readings by exploiting vulnerabilities of mobile device OS in participatory sensing for IoT applications. Preliminary results from our implementation of trusted visual sensor node show that the proposed security solution can be realized without consuming significant amount of resources of the sensor node.},
  doi = {10.1145/2899007.2899010},
  pages = {14--21},
  address = {New York, NY},
  month = {5},
  isbn = {978-1-4503-4283-4},
  url = {http://dl.acm.org/citation.cfm?id=2899010\&CFID=797158462\&CFTOKEN=24054971},
  }

• J. F. Schmidt, M. K. Atiq, U. Schilcher, and C. Bettstetter, “Encouraging Device-to-Device Communications to Improve Energy Efficiency in Cellular Systems,” in IEEE Proc. Vehicular Technology Conference, IEEE Xplore Digital Library, 2016, p. 1–5. doi:10.1109/VTCSpring.2016.7504216
  [BibTeX] [Abstract] [Download PDF]
  

  This work explores the benefits in terms of energy efficiency that can be provided by device-to-device (D2D) communications in cellular systems. Analyzing a large cellular network using stochastic geometry, considering Nakagami fading and realistic system parameters, we explore the reduction that can be achieved in network power consumption, and the impact this reduction has on the performance of cellular users. When the network is not fully loaded, switching some cellular users into D2D mode results in a significant reduction of the network power consumption while the overall network throughput is maintained. Furthermore, it is observed that the impact of the reduction in the inter-cell interference arising from switching cellular users to D2D mode surpasses that from the new non-orthogonal transmissions. This translates into a slight improvement in the users’ rates. Both analytical and simulation results are provided.

  @incollection{0f4de0c954ce3c820154dcffc3b6006d,
  author = {Schmidt, Jorge Friedrich and Atiq, Mahin Khushbakht and Schilcher, Udo and Bettstetter, Christian},
  title = {{Encouraging Device-to-Device Communications to Improve Energy Efficiency in Cellular Systems}},
  booktitle = {IEEE Proc. Vehicular Technology Conference},
  publisher = {IEEE Xplore Digital Library},
  year = {2016},
  abstract = {This work explores the benefits in terms of energy efficiency that can be provided by device-to-device (D2D) communications in cellular systems. Analyzing a large cellular network using stochastic geometry, considering Nakagami fading and realistic system parameters, we explore the reduction that can be achieved in network power consumption, and the impact this reduction has on the performance of cellular users. When the network is not fully loaded, switching some cellular users into D2D mode results in a significant reduction of the network power consumption while the overall network throughput is maintained. Furthermore, it is observed that the impact of the reduction in the inter-cell interference arising from switching cellular users to D2D mode surpasses that from the new non-orthogonal transmissions. This translates into a slight improvement in the users’ rates. Both analytical and simulation results are provided.},
  doi = {10.1109/VTCSpring.2016.7504216},
  pages = {1--5},
  month = {5},
  isbn = {978-1-5090-1699-0},
  url = {http://ieeexplore.ieee.org/document/7504216/},
  }

• T. Andre and C. Bettstetter, “Collaboration in Multi-Robot Exploration: To Meet or not to Meet?,” Journal of Intelligent & Robotic Systems, vol. 82, iss. 2, p. 325–337, 2016. doi:10.1007/s10846-015-0277-0
  [BibTeX] [Download PDF]

  @article{0f4de0c75429587801542d7b45ff0054,
  author = {Andre, Torsten and Bettstetter, Christian},
  title = {{Collaboration in Multi-Robot Exploration: To Meet or not to Meet?}},
  journal = {Journal of Intelligent \& Robotic Systems},
  year = {2016},
  doi = {10.1007/s10846-015-0277-0},
  volume = {82},
  number = {2},
  pages = {325--337},
  month = {5},
  url = {http://link.springer.com/content/pdf/10.1007\%2Fs10846-015-0277-0.pdf},
  }

• C. Klemenjak, D. D. Egarter, and W. Elmenreich, “YoMo: the Arduino-based smart metering board,” Computer Science – Research and Development, vol. 31, iss. 1, p. 97–103, 2016. doi:10.1007/s00450-014-0290-8
  [BibTeX] [Download PDF]

  @article{0f4de0c9518c7b9601518e0a1cad0019,
  author = {Klemenjak, Christoph and Egarter, Dominik Daniel and Elmenreich, Wilfried},
  title = {{YoMo: the Arduino-based smart metering board}},
  journal = {Computer Science - Research and Development},
  year = {2016},
  doi = {10.1007/s00450-014-0290-8},
  volume = {31},
  number = {1},
  pages = {97--103},
  month = {5},
  url = {http://arxiv.org/pdf/1409.3404v1},
  }

• S. Hayat, E. Yanmaz, and R. Muzaffar, “Survey on Unmanned Aerial Vehicle Networks for Civil Applications: A Communications Viewpoint,” IEEE Communications Surveys and Tutorials, vol. 18, iss. 4, p. 2624–2661, 2016. doi:10.1109/COMST.2016.2560343
  [BibTeX] [Abstract] [Download PDF]
  

  The days where swarms of Unmanned Aerial Vehicles (UAVs) will occupy our skies are fast approaching due to the introduction of cost-efficient and reliable small aerial vehicles and the increasing demand for use of such vehicles in a plethora of civil applications. Governments and industry alike have been heavily investing in the development of UAVs. As such it is important to understand the characteristics of networks with UAVs to enable the incorporation of multiple, coordinated aerial vehicles into the air traffic in a reliable and safe manner. To this end, this survey reports the characteristics and requirements of UAV networks for envisioned civil applications over the period 2000-2015 from a communications and networking viewpoint. We survey and quantify quality-of-service (QoS) requirements, network-relevant mission parameters, data requirements and the minimum data to be transmitted over the network. Furthermore, we elaborate on general networking related requirements such as connectivity, adaptability, safety, privacy, security, and scalability. We also report experimental results from many projects and investigate the suitability of existing communication technologies for supporting reliable aerial networking.

  @article{0f4de0c7545317af015457e80fa60208,
  author = {Hayat, Samira and Yanmaz, Evsen and Muzaffar, Raheeb},
  title = {{Survey on Unmanned Aerial Vehicle Networks for Civil Applications: A Communications Viewpoint}},
  journal = {IEEE Communications Surveys and Tutorials},
  year = {2016},
  abstract = {The days where swarms of Unmanned Aerial Vehicles (UAVs) will occupy our skies are fast approaching due to the introduction of cost-efficient and reliable small aerial vehicles and the increasing demand for use of such vehicles in a plethora of civil applications. Governments and industry alike have been heavily investing in the development of UAVs. As such it is important to understand the characteristics of networks with UAVs to enable the incorporation of multiple, coordinated aerial vehicles into the air traffic in a reliable and safe manner. To this end, this survey reports the characteristics and requirements of UAV networks for envisioned civil applications over the period 2000-2015 from a communications and networking viewpoint. We survey and quantify quality-of-service (QoS) requirements, network-relevant mission parameters, data requirements and the minimum data to be transmitted over the network. Furthermore, we elaborate on general networking related requirements such as connectivity, adaptability, safety, privacy, security, and scalability. We also report experimental results from many projects and investigate the suitability of existing communication technologies for supporting reliable aerial networking.},
  doi = {10.1109/COMST.2016.2560343},
  volume = {18},
  number = {4},
  pages = {2624--2661},
  month = {4},
  url = {https://mobile.aau.at/publications/hayat-2016-COMST-surveyUAV.pdf},
  }

• V. S. R. P. Pathuri Bhuvana, M. M. Schranz, C. Regazzoni, B. Rinner, A. M. Tonello, and M. Huemer, “Multi-Camera Object Tracking using Surprisal Observations in Visual Sensor Networks,” EURASIP Journal on Advances in Signal Processing, vol. 2016, iss. 50, p. 1–13, 2016. doi:10.1186/s13634-016-0347-x
  [BibTeX] [Abstract] [Download PDF]
  

  In this work, we propose a multi-camera object tracking method with surprisal observations based on the cubature information filter in visual sensor networks. In multi-camera object tracking approaches, multiple cameras observe an object and exchange the object’s local information with each other to compute the global state of the object. The information exchange among the cameras suffers from certain bandwidth and energy constraints. Thus, allowing only a desired number of cameras with most informative observations to participate in the information exchange is an efficient way to meet the stringent requirements of bandwidth and energy. In this paper, the concept of surprisal is used to calculate the amount of information associated with the observations of each camera. Furthermore, a surprisal selection mechanism is proposed to facilitate the cameras to take independent decision on whether their observations are informative or not. If the observations are informative, the cameras calculate the local information vector and matrix based on the cubature information filter and transmit them to the fusion center. These cameras are called as surprisal cameras. The fusion center computes the global state of the object by fusing the local information from the surprisal cameras. Moreover, the proposed scheme also ensures that on average only a desired number of cameras participate in the information exchange. The proposed method shows a significant improvement in tracking accuracy over the multi-camera object tracking with randomly selected or fixed cameras for the same number of average transmissions to the fusion center.

  @article{0f4de0c753d1852e0153d2add1540018,
  author = {Pathuri Bhuvana, Venkata Satya Rajendra Pr and Schranz, Melanie Marianne and Regazzoni, Carlo and Rinner, Bernhard and Tonello, Andrea M. and Huemer, Mario},
  title = {{Multi-Camera Object Tracking using Surprisal Observations in Visual Sensor Networks}},
  journal = {EURASIP Journal on Advances in Signal Processing},
  year = {2016},
  abstract = {In this work, we propose a multi-camera object tracking method with surprisal observations based on the cubature information filter in visual sensor networks. In multi-camera object tracking approaches, multiple cameras observe an object and exchange the object’s local information with each other to compute the global state of the object. The information exchange among the cameras suffers from certain bandwidth and energy constraints. Thus, allowing only a desired number of cameras with most informative observations to participate in the information exchange is an efficient way to meet the stringent requirements of bandwidth and energy. In this paper, the concept of surprisal is used to calculate the amount of information associated with the observations of each camera. Furthermore, a surprisal selection mechanism is proposed to facilitate the cameras to take independent decision on whether their observations are informative or not. If the observations are informative, the cameras calculate the local information vector and matrix based on the cubature information filter and transmit them to the fusion center. These cameras are called as surprisal cameras. The fusion center computes the global state of the object by fusing the local information from the surprisal cameras. Moreover, the proposed scheme also ensures that on average only a desired number of cameras participate in the information exchange. The proposed method shows a significant improvement in tracking accuracy over the multi-camera object tracking with randomly selected or fixed cameras for the same number of average transmissions to the fusion center.},
  doi = {10.1186/s13634-016-0347-x},
  volume = {2016},
  number = {50},
  pages = {1--13},
  month = {4},
  url = {http://link.springer.com/article/10.1186/s13634-016-0347-x},
  }

• J. Simonjan and B. Rinner, “Autonomous, lightweight calibration of visual sensor networks with dense coverage,” in 2016 IEEE International Conference on Pervasive Computing and Communication Workshops, Piscataway (NJ): IEEE, 2016, p. 1–4. doi:10.1109/PERCOMW.2016.7457062
  [BibTeX] [Abstract] [Download PDF]
  

  We present an algorithm for autonomous network calibration of visual sensor networks, which become more and more pervasive since they can be found in various everyday life environments. The proposed algorithm works in a fully decentralized way and minimizes usage of cost-intensive vision algorithms. To achieve network calibration, our approach relies on jointly detected objects and geometric relations between camera nodes. Distances and angles are the only information required to be exchanged between nodes. The process works iteratively until cameras have determined the relative position and orientation of their neighbors. Preliminary results are demonstrated using our visual sensor network simulator.

  @incollection{0f4de0c9543ddd2701544c52bf2b0046,
  author = {Simonjan, Jennifer and Rinner, Bernhard},
  title = {{Autonomous, lightweight calibration of visual sensor networks with dense coverage}},
  booktitle = {2016 IEEE International Conference on Pervasive Computing and Communication Workshops },
  publisher = {IEEE},
  year = {2016},
  abstract = {We present an algorithm for autonomous network calibration of visual sensor networks, which become more and more pervasive since they can be found in various everyday life environments. The proposed algorithm works in a fully decentralized way and minimizes usage of cost-intensive vision algorithms. To achieve network calibration, our approach relies on jointly detected objects and geometric relations between camera nodes. Distances and angles are the only information required to be exchanged between nodes. The process works iteratively until cameras have determined the relative position and orientation of their neighbors. Preliminary results are demonstrated using our visual sensor network simulator.},
  doi = {10.1109/PERCOMW.2016.7457062},
  pages = {1--4},
  address = {Piscataway (NJ)},
  month = {4},
  url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=7457062},
  }

• D. Egarter, A. Monacchi, T. Khatib, and W. Elmenreich, “Integration of legacy appliances into home energy management systems,” Journal of Ambient Intelligence and Humanized Computing, vol. 7, iss. 2, p. 171–185, 2016. doi:10.1007/s12652-015-0312-9
  [BibTeX] [Download PDF]

  @article{0f4de0c9518c7b9601518e4875ad0059,
  author = {Egarter, Dominik and Monacchi, Andrea and Khatib, Tamer and Elmenreich, Wilfried},
  title = {{Integration of legacy appliances into home energy management systems}},
  journal = {Journal of Ambient Intelligence and Humanized Computing},
  year = {2016},
  doi = {10.1007/s12652-015-0312-9},
  volume = {7},
  number = {2},
  pages = {171--185},
  month = {4},
  url = {http://arxiv.org/pdf/1406.3252},
  }

• A. Pittolo and A. M. Tonello, “A Synthetic PLC Channel Model,” in IEEE International Symposium on Power Line Communications – ISPLC 2016, Piscataway (NJ): IEEE, 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  he huge and increasing demand of data connectivity motivates the development of new and effective power line communication (PLC) channel models, which are able to faithfully describe a real communication scenario. This is of fundamental importance since a good model represents a quick evaluation tool for new standards or devices, allowing a considerable saving in time and costs. The aim of this paper is to discuss a novel top-down MIMO PLC synthetic channel model, able to numerically emulate a real PLC environment. First, the most common channel modeling strategies are briefly described, highlighting strengths and weaknesses. Afterwards, the basic model approach is described considering the SISO scenario. The implementation strategy is then extended to the MIMO case. The validity of the proposed model is proved making a comparison between the simulated channels and channels obtained with measurements in terms of both performance and statistical metrics. The focus is on the broadband frequency spectrum.

  @incollection{0f4de0c7556e537101556ead6c880000,
  author = {Pittolo, Alberto and Tonello, Andrea M.},
  title = {{A Synthetic PLC Channel Model}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {he huge and increasing demand of data connectivity motivates the development of new and effective power line communication (PLC) channel models, which are able to faithfully describe a real communication scenario. This is of fundamental importance since a good model represents a quick evaluation tool for new standards or devices, allowing a considerable saving in time and costs. The aim of this paper is to discuss a novel top-down MIMO PLC synthetic channel model, able to numerically emulate a real PLC environment. First, the most common channel modeling strategies are briefly described, highlighting strengths and weaknesses. Afterwards, the basic model approach is described considering the SISO scenario. The implementation strategy is then extended to the MIMO case. The validity of the proposed model is proved making a comparison between the simulated channels and channels obtained with measurements in terms of both performance and statistical metrics. The focus is on the broadband frequency spectrum.},
  address = {Piscataway (NJ)},
  month = {3},
  url = {http://arxiv.org/abs/1604.01594},
  }

• M. De Piante and A. M. Tonello, “Characteristics of the PLC Channel: Reciprocity, Symmetry and Port Decoupling for Impedance Matching,” in IEEE International Symposium on Power Line Communications – ISPLC 2016, Piscataway (NJ): IEEE, 2016, p. 93–97. doi:10.1109/ISPLC.2016.7476282
  [BibTeX] [Abstract] [Download PDF]
  

  This paper analyzes the reciprocity, symmetry and port decoupling effect in real home PLC networks. The reciprocity has an impact on the fact that the input and output ports of a PLC link are decoupled, and the study on the symmetry can explain the reason for the decoupling effect. The analysis of experimental data in the band 2-100 MHz shows that the PLC channel is reciprocal and that the input-output ports are largely decoupled. In turn, the port decoupling property implies that impedance matching at the transmitter and receiver ports can be implemented independently one from the other. That is, the choice of the receiver impedance does not have effect on the choice of the transmitter impedance and vice versa, in home broad band PLC systems.

  @incollection{0f4de0c75279b6c101527debaf9e0901,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{Characteristics of the PLC Channel: Reciprocity, Symmetry and Port Decoupling for Impedance Matching}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {This paper analyzes the reciprocity, symmetry and port decoupling effect in real home PLC networks. The reciprocity has an impact on the fact that the input and output ports of a PLC link are decoupled, and the study on the symmetry can explain the reason for the decoupling effect. The analysis of experimental data in the band 2-100 MHz shows that the PLC channel is reciprocal and that the input-output ports are largely decoupled. In turn, the port decoupling property implies that impedance matching at the transmitter and receiver ports can be implemented independently one from the other. That is, the choice of the receiver impedance does not have effect on the choice of the transmitter impedance and vice versa, in home broad band PLC systems.},
  doi = {10.1109/ISPLC.2016.7476282},
  pages = {93--97},
  address = {Piscataway (NJ)},
  month = {3},
  isbn = {978-1-4673-6643-4},
  url = {http://ieeexplore.ieee.org/document/7476282/},
  }

• W. Bakkali, P. Pagani, T. Chonavel, and A. M. Tonello, “Energy Efficiency Performance of Decode and Forward MIMO Relay PLC Systems,” in IEEE International Symposium on Power Line Communications – ISPLC 2016, Piscataway (NJ): IEEE, 2016, p. 201–205. doi:10.1109/ISPLC.2016.7476270
  [BibTeX] [Abstract] [Download PDF]
  

  In this paper, we investigate the energy efficiency performance of Multiple-Input-Multiple-Output (MIMO) relay-assisted Power Line Communication (PLC) networks. We consider a half-duplex Decode and Forward (DF) relay system and compare its performance for both uniform time allocation and optimized time allocation strategies. Based on realistic MIMO PLC channels, obtained from the European Telecommunications Standards Institute (ETSI) Specialist Task Force (STF) 410 field measurement campaign that was performed in six European countries, we show that depending on the idle power consumption of MIMO PLC modems in the relay network, possible energy saving gain can be obtained by using DF MIMO PLC relays.

  @incollection{0f4de0c75279b6c101527de8701608be,
  author = {Bakkali, Wafae and Pagani, Pascal and Chonavel, Thierry and Tonello, Andrea M.},
  title = {{Energy Efficiency Performance of Decode and Forward MIMO Relay PLC Systems}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {In this paper, we investigate the energy efficiency performance of Multiple-Input-Multiple-Output (MIMO) relay-assisted Power Line Communication (PLC) networks. We consider a half-duplex Decode and Forward (DF) relay system and compare its performance for both uniform time allocation and optimized time allocation strategies. Based on realistic MIMO PLC channels, obtained from the European Telecommunications Standards Institute (ETSI) Specialist Task Force (STF) 410 field measurement campaign that was performed in six European countries, we show that depending on the idle power consumption of MIMO PLC modems in the relay network, possible energy saving gain can be obtained by using DF MIMO PLC relays.},
  doi = {10.1109/ISPLC.2016.7476270},
  pages = {201--205},
  address = {Piscataway (NJ)},
  month = {3},
  url = {http://ieeexplore.ieee.org/document/7476270/},
  }

• F. Passerini and A. M. Tonello, “In Band Full Duplex PLC: The Role of the Hybrid Coupler,” in IEEE International Symposium on Power Line Communications – ISPLC 2016, Piscataway (NJ): IEEE, 2016. doi:10.1109/ISPLC.2016.7476291
  [BibTeX] [Abstract] [Download PDF]
  

  In Band Full Duplexing (IBFD) has recently become attractive for the power line communications (PLC) community. In this paper we analyze the role of the first stage of a PLCIBFD modem: the hybrid coupler. An analytical analysis of its influence on the signal transfer function is performed and some simulations using a measurement database are also included. Possible hardware implementation of a PLC hybrid coupler are finally discussed.

  @incollection{0f4de0c75279b6c101527dee35b50948,
  author = {Passerini, Federico and Tonello, Andrea M.},
  title = {{In Band Full Duplex PLC: The Role of the Hybrid Coupler}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {In Band Full Duplexing (IBFD) has recently become attractive for the power line communications (PLC) community. In this paper we analyze the role of the first stage of a PLCIBFD modem: the hybrid coupler. An analytical analysis of its influence on the signal transfer function is performed and some simulations using a measurement database are also included. Possible hardware implementation of a PLC hybrid coupler are finally discussed.},
  doi = {10.1109/ISPLC.2016.7476291},
  address = {Piscataway (NJ)},
  month = {3},
  url = {http://ieeexplore.ieee.org/document/7476291/},
  }

• A. Salem, K. Rabie, K. Hamdi, E. Alsusa, and A. M. Tonello, “Physical Layer Security of Cooperative Relaying Power Line Communication Systems,” in IEEE International Symposium on Power Line Communications – ISPLC 2016, Piscataway (NJ): IEEE, 2016, p. 185–189. doi:10.1109/ISPLC.2016.7476261
  [BibTeX] [Abstract] [Download PDF]
  

  Power-line communications (PLC) have enabled many smart grid applications over the past years. Secure communications over such channels, however, remains a crucial aspect for the successful realization of smart grids. Many techniques have been proposed in the literature to achieve this and the most recent of which is the adoption of physical layer security for PLC systems. Unlike the existing work, in this paper, we investigate physical layer security of cooperative relaying PLC systems with artificial noise in the presence of an eavesdropper. The system performance is evaluated in terms of the ergodic secrecy capacity. In light of this, we derive a mathematical expression for the ergodic secrecy capacity and validate it with Monte Carlo simulations. Results reveal that the proposed system can significantly enhance the security of PLC systems.

  @incollection{0f4de0c75279b6c101527de0b04a0815,
  author = {Salem, Abdelhamid and Rabie, Khaled and Hamdi, Khairi and Alsusa, Emad and Tonello, Andrea M.},
  title = {{Physical Layer Security of Cooperative Relaying Power Line Communication Systems}},
  booktitle = {IEEE International Symposium on Power Line Communications - ISPLC 2016},
  publisher = {IEEE},
  year = {2016},
  abstract = {Power-line communications (PLC) have enabled many smart grid applications over the past years. Secure communications over such channels, however, remains a crucial aspect for the successful realization of smart grids. Many techniques have been proposed in the literature to achieve this and the most recent of which is the adoption of physical layer security for PLC systems. Unlike the existing work, in this paper, we investigate physical layer security of cooperative relaying PLC systems with artificial noise in the presence of an eavesdropper. The system performance is evaluated in terms of the ergodic secrecy capacity. In light of this, we derive a mathematical expression for the ergodic secrecy capacity and validate it with Monte Carlo simulations. Results reveal that the proposed system can significantly enhance the security of PLC systems.},
  doi = {10.1109/ISPLC.2016.7476261},
  pages = {185--189},
  address = {Piscataway (NJ)},
  month = {3},
  isbn = {978-1-4673-6643-4},
  url = {http://ieeexplore.ieee.org/document/7476261/},
  }

• D. Neuhold, J. F. Schmidt, U. Schilcher, G. Brandner, C. Bettstetter, J. Klaue, and D. Schupke, “Towards an Ultra-wide Band Sensor Network for Aircraft Applications,” in EWSN’16 Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks, Junction Publishing, 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  We present a wireless sensor network, deployed andtested for real aircraft applications. By employing IEEE802.15.4-2011 UWB compliant transceivers, with a timeslotted channel access protocol, characteristics of indoorpropagation are studied. A test setup in an aircraft’s emptypassenger cabin is presented and wireless channel featuresare analysed. Specifically, coherence time and shadowingare determined, which constitute the fundamental step forretrieving a generalized channel model.

  @incollection{0f4de0c954ce3c820154dd8999bf00d0,
  author = {Neuhold, Daniel and Schmidt, Jorge Friedrich and Schilcher, Udo and Brandner, Günter and Bettstetter, Christian and Klaue, Jirka and Schupke, Dominic},
  title = {{Towards an Ultra-wide Band Sensor Network for Aircraft Applications}},
  booktitle = {EWSN'16 Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks},
  publisher = {Junction Publishing},
  year = {2016},
  abstract = {We present a wireless sensor network, deployed andtested for real aircraft applications. By employing IEEE802.15.4-2011 UWB compliant transceivers, with a timeslotted channel access protocol, characteristics of indoorpropagation are studied. A test setup in an aircraft’s emptypassenger cabin is presented and wireless channel featuresare analysed. Specifically, coherence time and shadowingare determined, which constitute the fundamental step forretrieving a generalized channel model.},
  month = {2},
  isbn = { 9780994988607},
  url = {http://www.ewsn.org/file-repository/ewsn2016/217\_218\_neuhold.pdf?attredirects=0},
  }

• M. Höberl, I. Haider, and B. Rinner, “Towards a Secure Key Generation and Storage Framework on Resource-Constrained Sensor Nodes,” in EWSN’16 Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks, Junction Publishing, 2016, p. 313–318.
  [BibTeX] [Abstract] [Download PDF]
  

  Sensors have an essential role in the currently emerging Internet of Things (IoT) whereby these resource constrained nodes sense the environment, process the sensed data and forward it to a central entity. As some of this data might be sensitive in nature, it is crucial to ensure certain security guarantees on the sensed data such as integrity, confidentiality, and authenticity. Certain cryptographic primitives offer these security properties based on the assumption that each node is capable of generating and storing its secret key securely. Existing solutions for secure key storage are based on secure non-volatile memory. Physically Unclonable Functions (PUFs) are lightweight hardware security primitives that bind a unique key to each device and provide resistance against key compromise attacks as the key exists in form of hardware manufacturing variations, which are difficult to read as compared to memory based alternative solutions. Therefore, in this work we present a PUF-based lightweight, secure key generation and storage framework for resource constrained sensor nodes. Our implementation of a ring oscillator (RO) PUF based key generation scheme shows that the PUF based key generation consumes only a small part of a typical visual sensor node’s resources.

  @incollection{0f4de0c9543ddd2701544d728861017e,
  author = {Höberl, Michael and Haider, Ihtesham and Rinner, Bernhard},
  title = {{Towards a Secure Key Generation and Storage Framework on Resource-Constrained Sensor Nodes}},
  booktitle = {EWSN'16 Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks},
  publisher = {Junction Publishing},
  year = {2016},
  abstract = {Sensors have an essential role in the currently emerging Internet of Things (IoT) whereby these resource constrained nodes sense the environment, process the sensed data and forward it to a central entity. As some of this data might be sensitive in nature, it is crucial to ensure certain security guarantees on the sensed data such as integrity, confidentiality, and authenticity. Certain cryptographic primitives offer these security properties based on the assumption that each node is capable of generating and storing its secret key securely. Existing solutions for secure key storage are based on secure non-volatile memory. Physically Unclonable Functions (PUFs) are lightweight hardware security primitives that bind a unique key to each device and provide resistance against key compromise attacks as the key exists in form of hardware manufacturing variations, which are difficult to read as compared to memory based alternative solutions. Therefore, in this work we present a PUF-based lightweight, secure key generation and storage framework for resource constrained sensor nodes. Our implementation of a ring oscillator (RO) PUF based key generation scheme shows that the PUF based key generation consumes only a small part of a typical visual sensor node’s resources.},
  pages = {313--318},
  month = {2},
  isbn = {978-0-9949886-0-7},
  url = {http://dl.acm.org/citation.cfm?id=2893789},
  }

• G. Brandner, U. Schilcher, and C. Bettstetter, “Firefly synchronization with phase rate equalization and its experimental analysis in wireless systems,” Computer Networks, 2016. doi:10.1016/j.comnet.2016.01.001
  [BibTeX] [Abstract] [Download PDF]
  

  The convergence and precision of synchronization algorithms based on the theory of pulse-coupled oscillators is evaluated on programmable radios. Measurements in different wireless topologies show that such algorithms reach precisions in the low microsecond range. Based on the observation that phase rate deviation among radios is a limiting factor for the achievable precision, we propose a distributed algorithm for automatic phase rate equalization and show by experiments that an improved precision below one microsecond is possible in the given setups. It is also experimentally demonstrated that the stochastic nature of coupling is a key ingredient for convergence to synchrony. The proposed scheme can be applied in wireless systems for distributed synchronization of transmission slots, or sleep cycles.

  @article{0f4de0c75282add4015288c734091548,
  author = {Brandner, Günther and Schilcher, Udo and Bettstetter, Christian},
  title = {{Firefly synchronization with phase rate equalization and its experimental analysis in wireless systems}},
  journal = {Computer Networks},
  year = {2016},
  abstract = {The convergence and precision of synchronization algorithms based on the theory of pulse-coupled oscillators is evaluated on programmable radios. Measurements in different wireless topologies show that such algorithms reach precisions in the low microsecond range. Based on the observation that phase rate deviation among radios is a limiting factor for the achievable precision, we propose a distributed algorithm for automatic phase rate equalization and show by experiments that an improved precision below one microsecond is possible in the given setups. It is also experimentally demonstrated that the stochastic nature of coupling is a key ingredient for convergence to synchrony. The proposed scheme can be applied in wireless systems for distributed synchronization of transmission slots, or sleep cycles.},
  doi = {10.1016/j.comnet.2016.01.001},
  month = {1},
  url = {http://www.sciencedirect.com/science/article/pii/S1389128616000049},
  }

• H. T. Haider, O. H. See, and W. Elmenreich, “A review of residential demand response of smart grid,” Renewable and Sustainable Energy Reviews, vol. 59, p. 166–178, 2016. doi:10.1016/j.rser.2016.01.016
  [BibTeX]

  @article{0f4de0c75282add4015283cec38e0494,
  author = {Haider, Haider Tarish and See, Ong Hang and Elmenreich, Wilfried},
  title = {{A review of residential demand response of smart grid}},
  journal = {Renewable and Sustainable Energy Reviews},
  year = {2016},
  doi = {10.1016/j.rser.2016.01.016},
  volume = {59},
  pages = {166--178},
  }

• C. Streußnig, M. Wieser, P. Hübner, B. Dieber, and R. Winter, “Crosmos. Ein interdisziplinärer Ansatz zu mobilen Spielen.,” in Digitale Spiele, J. Helbig and R. R. Schallegger, Eds., Köln: Herbert von Halem Verlag, 2016, vol. 5, p. 87–101.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c759a82dcb0159abb2da8b01b3,
  author = {Streußnig, Claudia and Wieser, Matthias and Hübner, Philipp and Dieber, Bernhard and Winter, Rainer},
  title = {{Crosmos. Ein interdisziplinärer Ansatz zu mobilen Spielen.}},
  booktitle = {Digitale Spiele},
  publisher = {Herbert von Halem Verlag},
  year = {2016},
  editor = {Jörg Helbig and René Reinhold Schallegger},
  volume = {5},
  series = {Klagenfurter Beiträge zur Visuellen Kultur},
  pages = {87--101},
  address = {Köln},
  isbn = {978-3-86962-158-6},
  url = {http://www.halem-verlag.de/digitale-spiele/},
  }

• W. Elmenreich and H. P. Gross, Das Spiel, Profil Verlag, 2016, vol. 5.
  [BibTeX] [Abstract] [Download PDF]
  

  Menschen spielen gerne. Brett- und Würfelspiele sind bereits aus sehr alten Kulturen bekannt; mit dem Computerzeitalter hat eine Ära der Computerspiele Einzug gehalten und das Spektrum der Spieltypen und -ideen in erheblichem Maße erweitert. Das Interdisziplinäre Kolleg der Kärntner Sparkasse an der Alpen-Adria-Universität Klagenfurt stellt in diesem Buch die Vielgestaltigkeit des Themas Spiel zur Diskussion: Das Spektrum reicht vom ethischen Blick auf komplexe Computerspiele und ihre Geschichten als neue digitale Erzählform über die speziellen Bereiche der Indiegames sowie der Werbe- und Lernspiele bis hin zum Glücksspiel.

  @book{0f4de0c759e005ab0159e6fd48a70a9f,
  author = {Elmenreich, Wilfried and Gross, Horst Peter},
  title = {{Das Spiel}},
  publisher = {Profil Verlag},
  year = {2016},
  abstract = {Menschen spielen gerne. Brett- und Würfelspiele sind bereits aus sehr alten Kulturen bekannt; mit dem Computerzeitalter hat eine Ära der Computerspiele Einzug gehalten und das Spektrum der Spieltypen und -ideen in erheblichem Maße erweitert. Das Interdisziplinäre Kolleg der Kärntner Sparkasse an der Alpen-Adria-Universität Klagenfurt stellt in diesem Buch die Vielgestaltigkeit des Themas Spiel zur Diskussion: Das Spektrum reicht vom ethischen Blick auf komplexe Computerspiele und ihre Geschichten als neue digitale Erzählform über die speziellen Bereiche der Indiegames sowie der Werbe- und Lernspiele bis hin zum Glücksspiel.},
  volume = {5},
  isbn = {978-3-89019-708-1},
  url = {http://www.profilverlag.de/index.php?id=37\&no\_cache=1\&tx\_ttnews\%5Btt\_news\%5D=382\&tx\_ttnews\%5BbackPid\%5D=28},
  }

• H. T. Haider, O. H. See, and W. Elmenreich, “Dynamic residential load scheduling based on adaptive consumption level pricing scheme,” Electric Power Systems Research, vol. 133, p. 27–35, 2016. doi:10.1016/j.epsr.2015.12.007
  [BibTeX] [Download PDF]

  @article{0f4de0c75282add401528346a61001c4,
  author = {Haider, Haider Tarish and See, Ong Hang and Elmenreich, Wilfried},
  title = {{Dynamic residential load scheduling based on adaptive consumption level pricing scheme}},
  journal = {Electric Power Systems Research},
  year = {2016},
  doi = {10.1016/j.epsr.2015.12.007},
  volume = {133},
  pages = {27--35},
  url = {http://www.sciencedirect.com/science/article/pii/S0378779615003843},
  }

• M. Imran, B. Rinner, S. Zandi Zand, and M. O’Nils, “Exploration of preprocessing architectures for field-programmable gate array-based thermal-visual smart camera,” Journal of Electronic Imaging, vol. 25, iss. 4, 2016. doi:10.1117/1.JEI.25.4.041006
  [BibTeX] [Download PDF]

  @article{0f4de0c95475580d015476f4e7b90130,
  author = {Imran, Muhammad and Rinner, Bernhard and Zandi Zand, Sajjad and O’Nils, Mattias},
  title = {{Exploration of preprocessing architectures for field-programmable gate array-based thermal-visual smart camera}},
  journal = {Journal of Electronic Imaging},
  year = {2016},
  doi = {10.1117/1.JEI.25.4.041006},
  volume = {25},
  number = {4},
  url = {https://pervasive.aau.at/BR/pubs/2016/Imran\_JEI2016.pdf},
  }

• S. Zhevzhyk, D. Hölbling, G. Köpf, C. Zellot, M. Lux, and W. Elmenreich, “Indie Games,” in Das Spiel, W. Elmenreich and H. P. Gross, Eds., München, Wien: Profil Verlag, 2016, p. 53–86.
  [BibTeX]

  @incollection{0f4de0c759e005ab0159e70776560abe,
  author = {Zhevzhyk, Sergii and Hölbling, Daniel and Köpf, Günther and Zellot, Christian and Lux, Mathias and Elmenreich, Wilfried},
  title = {{Indie Games}},
  booktitle = {Das Spiel},
  publisher = {Profil Verlag},
  year = {2016},
  editor = {Wilfried Elmenreich and Horst Peter Gross},
  pages = {53--86},
  address = {München, Wien},
  isbn = {978-3-89019-708-1},
  }

• U. Schilcher, S. Toumpis, M. Haenggi, A. Crismani, G. Brandner, and C. Bettstetter, “Interference Functionals in Poisson Networks,” IEEE transactions on information theory, vol. 62, iss. 1, p. 1–14, 2016. doi:10.1109/TIT.2015.2501799
  [BibTeX] [Abstract] [Download PDF]
  

  We propose and prove a theorem that allows the calculation of a class of functionals on Poisson point processes that have the form of expected values of sum–products of functions. In proving the theorem, we present a variant of the Campbell–Mecke theorem from stochastic geometry. We proceed to apply our result in the calculation of expected values involving interference in wireless Poisson networks. Based on this, we derive outage probabilities for transmissions in a Poisson network with Nakagami fading. Our results extend the stochastic geometry toolbox used for the mathematical analysis of interference-limited wireless networks.

  @article{0f4de0c9518c7b960151a089c4750669,
  author = {Schilcher, Udo and Toumpis, Stavros and Haenggi, Martin and Crismani, Alessandro and Brandner, Günther and Bettstetter, Christian},
  title = {{Interference Functionals in Poisson Networks}},
  journal = {IEEE transactions on information theory},
  year = {2016},
  abstract = {We propose and prove a theorem that allows the calculation of a class of functionals on Poisson point processes that have the form of expected values of sum–products of functions. In proving the theorem, we present a variant of the Campbell–Mecke theorem from stochastic geometry. We proceed to apply our result in the calculation of expected values involving interference in wireless Poisson networks. Based on this, we derive outage probabilities for transmissions in a Poisson network with Nakagami fading. Our results extend the stochastic geometry toolbox used for the mathematical analysis of interference-limited wireless networks.},
  doi = {10.1109/TIT.2015.2501799},
  volume = {62},
  number = {1},
  pages = {1--14},
  month = {1},
  url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7331283\&newsearch=true\&queryText=interference\%20functionals},
  }

• T. Khatib and W. Elmenreich, Modeling of Photovoltaic Systems Using MATLAB: Simplified Green Codes, Wiley, 2016.
  [BibTeX] [Abstract] [Download PDF]
  

  This book presents simplified coded models for photovoltaic (PV) based systems using MATLAB to help readers understand the dynamic behavior of these systems. Through the use of MATLAB, the reader has the ability to modify system configuration, parameters and optimization criteria. Topics covered include energy sources, storage, and power electronic devices. This book contains six chapters that cover systems’ components from the solar source to the end-user. Chapter 1 discusses modelling of the solar source, and Chapter 2 discusses modelling of the photovoltaic source. Chapter 3 focuses on modeling of PV systems’ power electronic features and auxiliary power sources. Modeling of PV systems’ energy flow is examined in Chapter 4, while Chapter 5 discusses PV systems in electrical power systems. Chapter 6 presents an application of PV system models in systems’ size optimization. Common control methodologies applied to these systems are also modeled.

  @book{0f4de0c759e005ab0159e717bdd70ae0,
  author = {Khatib, Tamer and Elmenreich, Wilfried},
  title = {{ Modeling of Photovoltaic Systems Using MATLAB: Simplified Green Codes}},
  publisher = {Wiley},
  year = {2016},
  abstract = {This book presents simplified coded models for photovoltaic (PV) based systems using MATLAB to help readers understand the dynamic behavior of these systems. Through the use of MATLAB, the reader has the ability to modify system configuration, parameters and optimization criteria. Topics covered include energy sources, storage, and power electronic devices. This book contains six chapters that cover systems’ components from the solar source to the end-user. Chapter 1 discusses modelling of the solar source, and Chapter 2 discusses modelling of the photovoltaic source. Chapter 3 focuses on modeling of PV systems’ power electronic features and auxiliary power sources. Modeling of PV systems’ energy flow is examined in Chapter 4, while Chapter 5 discusses PV systems in electrical power systems. Chapter 6 presents an application of PV system models in systems’ size optimization. Common control methodologies applied to these systems are also modeled.},
  isbn = {978-1-119-11810-7},
  url = {http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1119118107.html},
  }

• M. Rabl-Pöchacker, D. Egarter, and W. Elmenreich, “Proficiency of Power Values for Load Disaggregation,” IEEE Transactions on Instrumentation and Measurement, vol. 1, 2016. doi:10.1109/TIM.2015.2477156
  [BibTeX] [Download PDF]

  @article{0f4de0c9518c7b9601518dfece9b0000,
  author = {Rabl-Pöchacker, Manfred and Egarter, Dominik and Elmenreich, Wilfried},
  title = {{Proficiency of Power Values for Load Disaggregation}},
  journal = {IEEE Transactions on Instrumentation and Measurement},
  year = {2016},
  doi = {10.1109/TIM.2015.2477156},
  volume = {1},
  month = {1},
  url = {http://arxiv.org/pdf/1503.08081v1},
  }

• R. Muzaffar, V. Vukadinovic, and A. Cavallaro, “Rate-adaptive multicast video streaming from teams of micro aerial vehicles,” in IEEE International Conference on Robotics & Automation (ICRA), Piscataway (NJ): IEEE, 2016.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c75502612c0155110110e903f0,
  author = {Muzaffar, Raheeb and Vukadinovic, Vladimir and Cavallaro, Andrea},
  title = {{Rate-adaptive multicast video streaming from teams of micro aerial vehicles}},
  booktitle = {IEEE International Conference on Robotics \& Automation (ICRA)},
  publisher = {IEEE},
  year = {2016},
  address = {Piscataway (NJ)},
  url = {http://mobile.aau.at/publications/muzaffar-2016-icra-multicast\_video\_streaming.pdf},
  }

2015

• H. T. Haider, O. H. See, and W. Elmenreich, “Optimal Residential Load Scheduling Based on Time Varying Pricing Scheme,” in IEEE Student Conference on Research and Development (SCOReD), Piscataway (NJ): IEEE, 2015, p. 210–214. doi:10.1109/SCORED.2015.7449326
  [BibTeX] [Abstract]
  

  Demand response (DR) has been getting widespread attention for smart grids to manage the required power demand with the available power supply resources. The recent integration of information and communication technology (ICT) systems has presented new opportunities for residential load scheduling systems to improve energy consumption by shifting or curtailing the demand required with respect to price change or emergency cases. In this paper, an optimal residential load scheduling system (ORLS) is proposed for dynamic scheduling of household appliances on the basis of a time of use (TOU) pricing scheme using iterative optimization method. The proposed load scheduling system encourages customers to manage their energy consumption to achieve lower energy bills and balance load consumption. Simulation results show that employing the proposed ORLS system benefits the customers by reducing their energy bill and the utility companies by decreasing the peak load of required customer load demand. The proposed residential load scheduling system based on TOU allows customers to reduce their energy bills by up to 31\% and to decrease the peak load by up to 35\%.

  @incollection{0f4de0c75282add401528356e16c0280,
  author = {Haider, Haider Tarish and See, Ong Hang and Elmenreich, Wilfried},
  title = {{Optimal Residential Load Scheduling Based on Time Varying Pricing Scheme}},
  booktitle = {IEEE Student Conference on Research and Development (SCOReD)},
  publisher = {IEEE},
  year = {2015},
  abstract = {Demand response (DR) has been getting widespread attention for smart grids to manage the required power demand with the available power supply resources. The recent integration of information and communication technology (ICT) systems has presented new opportunities for residential load scheduling systems to improve energy consumption by shifting or curtailing the demand required with respect to price change or emergency cases. In this paper, an optimal residential load scheduling system (ORLS) is proposed for dynamic scheduling of household appliances on the basis of a time of use (TOU) pricing scheme using iterative optimization method. The proposed load scheduling system encourages customers to manage their energy consumption to achieve lower energy bills and balance load consumption. Simulation results show that employing the proposed ORLS system benefits the customers by reducing their energy bill and the utility companies by decreasing the peak load of required customer load demand. The proposed residential load scheduling system based on TOU allows customers to reduce their energy bills by up to 31\% and to decrease the peak load by up to 35\%.},
  doi = {10.1109/SCORED.2015.7449326},
  pages = {210--214},
  address = {Piscataway (NJ)},
  month = {12},
  isbn = {978-1-4673-9572-4},
  }

• V. S. R. P. Pathuri Bhuvana, M. Huemer, and A. M. Tonello, “Battery Internal State Estimation Using a Mixed Kalman Cubature Filter,” in Proc. of IEEE SmartGridComm 2015, Miami, Florida, Piscataway (NJ): IEEE, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  Batteries are extensively used as small to medium range energy storage devices in smart grids. The estimation of the internal states of the batteries such as state-of-charge (SoC) is critical to provide consistent and efficient energy storagecapabilities for the grids. In general, the electrochemical batteries are represented by non-linear mathematical models. Hence, the non-linear filters such as the extended Kalman filter (EKF), cubature Kalman filter (CKF) and particle filters are widely used for the battery state estimation. However, the non-linearfilters are complex compared to the linear filters such as the Kalman filter. The non-linear battery model considered in this paper has an inherent linear sub structure. Hence, we propose a mixed Kalman cubature filter to exploit the inherent linearity to achieve better estimation results with a decreased complexity. The proposed filter uses the Kalman filter and the 3rd degree spherical radial cubature rule to calculate the first and second order moments of the linear and non-linear components, respectively, and subsequently, to estimate the SoC of the batteries. The experimental results show that the proposed filter performs better than the EKF and CKF. Further, the computational complexity of the proposed filter is less than the computational complexity of the CKF. Under the chosen conditions, the proposed filter achieves the average mean square error of approximately 1.1\% where as the CKF and EKF achieves 1.3\% and 1.5\%, respectively with the maximum SoC.

  @incollection{0f4de0c751b068b40151b42e9ca700ff,
  author = {Pathuri Bhuvana, Venkata Satya Rajendra Pr and Huemer, Mario and Tonello, Andrea M.},
  title = {{Battery Internal State Estimation Using a Mixed Kalman Cubature Filter}},
  booktitle = {Proc. of IEEE SmartGridComm 2015, Miami, Florida},
  publisher = {IEEE},
  year = {2015},
  abstract = {Batteries are extensively used as small to medium range energy storage devices in smart grids. The estimation of the internal states of the batteries such as state-of-charge (SoC) is critical to provide consistent and efficient energy storagecapabilities for the grids. In general, the electrochemical batteries are represented by non-linear mathematical models. Hence, the non-linear filters such as the extended Kalman filter (EKF), cubature Kalman filter (CKF) and particle filters are widely used for the battery state estimation. However, the non-linearfilters are complex compared to the linear filters such as the Kalman filter. The non-linear battery model considered in this paper has an inherent linear sub structure. Hence, we propose a mixed Kalman cubature filter to exploit the inherent linearity to achieve better estimation results with a decreased complexity. The proposed filter uses the Kalman filter and the 3rd degree spherical radial cubature rule to calculate the first and second order moments of the linear and non-linear components, respectively, and subsequently, to estimate the SoC of the batteries. The experimental results show that the proposed filter performs better than the EKF and CKF. Further, the computational complexity of the proposed filter is less than the computational complexity of the CKF. Under the chosen conditions, the proposed filter achieves the average mean square error of approximately 1.1\% where as the CKF and EKF achieves 1.3\% and 1.5\%, respectively with the maximum SoC.},
  address = {Piscataway (NJ)},
  month = {11},
  isbn = {978-1-4673-8289-2},
  url = {http://ieeexplore.ieee.org/},
  }

• A. M. Tonello and A. Pittolo, “Considerations on Narrowband and Broadband Power Line Communication for Smart Grids,” in Proc. of IEEE SmartGridComm 2015, Miami, Florida, Piscataway (NJ): IEEE, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  The high amount of applications to be implemented in the Smart Grid requires bi-directional connectivity between a multitude of nodes with a reliable, high speed, low latency, energy efficient and cost effective communication technology. Power line communication (PLC) has the potentiality to meet the requirements. Indeed, there exists space for PLC technology improvements and to overcome the challenges mostly due to a hostile communication medium. There are two considered frequency spectra: a narrowband (3-500 kHz) spectrum and a broad band (1.8-86 MHz) spectrum that are exploited by current technology. In this paper, we discuss the usage of these spectra both in LV and MV networks, highlighting pros and cons and advocating the realization of an adaptive technology that can cognitively make the best usage of available resources so that the requirements of reliability, latency and coverage can be met.

  @incollection{0f4de0c951ce98610152174169d711e9,
  author = {Tonello, Andrea M. and Pittolo, Alberto},
  title = {{Considerations on Narrowband and Broadband Power Line Communication for Smart Grids}},
  booktitle = {Proc. of IEEE SmartGridComm 2015, Miami, Florida},
  publisher = {IEEE},
  year = {2015},
  abstract = {The high amount of applications to be implemented in the Smart Grid requires bi-directional connectivity between a multitude of nodes with a reliable, high speed, low latency, energy efficient and cost effective communication technology. Power line communication (PLC) has the potentiality to meet the requirements. Indeed, there exists space for PLC technology improvements and to overcome the challenges mostly due to a hostile communication medium. There are two considered frequency spectra: a narrowband (3-500 kHz) spectrum and a broad band (1.8-86 MHz) spectrum that are exploited by current technology. In this paper, we discuss the usage of these spectra both in LV and MV networks, highlighting pros and cons and advocating the realization of an adaptive technology that can cognitively make the best usage of available resources so that the requirements of reliability, latency and coverage can be met.},
  address = {Piscataway (NJ)},
  month = {11},
  isbn = {978-1-4673-8289-2},
  url = {http://ieeexplore.ieee.org/Xplore/home.jsp},
  }

• D. Egarter and W. Elmenreich, “Load Disaggregation with Metaheuristic Optimization,” in Energieinformatik 2015, Karlsruhe: Karlsruher Institut für Technologie, 2015.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9518c7b9601518ebd4f9300d9,
  author = {Egarter, Dominik and Elmenreich, Wilfried},
  title = {{Load Disaggregation with Metaheuristic Optimization}},
  booktitle = {Energieinformatik 2015},
  publisher = {Karlsruher Institut für Technologie},
  year = {2015},
  address = {Karlsruhe},
  month = {11},
  url = {http://alturl.com/r4u2m},
  }

• A. Crismani, S. Toumpis, U. Schilcher, G. Brandner, and C. Bettstetter, “Cooperative Relaying under Spatially and Temporally Correlated Interference,” IEEE Transactions on Vehicular Technology, vol. 64, iss. 10, p. 4655–4669, 2015. doi:10.1109/TVT.2014.2372633
  [BibTeX] [Abstract] [Download PDF]
  

  We analyze the performance of an interferencelimited, decode-and-forward, cooperative relaying system that comprises a source, a destination, and N relays, placed arbitrarily on the plane and suffering from interference by a set ofinterferers placed according to a spatial Poisson process. In each transmission attempt, first the transmitter sends a packet; subsequently, a single one of the relays that received the packet correctly, if such a relay exists, retransmits it. We considerboth selection combining and maximal ratio combining at thedestination, Rayleigh fading, and interferer mobility.We derive expressions for the probability that a single transmission attempt is successful, as well as for the distribution of the transmission attempts until a packet is transmitted successfully. Results provide design guidelines applicable to a wide rangeof systems. Overall, the temporal and spatial characteristics of the interference play a significant role in shaping the system performance. Maximal ratio combining is only helpful when relays are close to the destination; in harsh environments, havingmany relays is especially helpful, and relay placement is critical; the performance improves when interferer mobility increases; and a tradeoff exists between energy efficiency and throughput.

  @article{0f4de0c750a8d64c0150a8e8ccb30007,
  author = {Crismani, Alessandro and Toumpis, Stavros and Schilcher, Udo and Brandner, Günther and Bettstetter, Christian},
  title = {{Cooperative Relaying under Spatially and Temporally Correlated Interference}},
  journal = {IEEE Transactions on Vehicular Technology},
  year = {2015},
  abstract = {We analyze the performance of an interferencelimited, decode-and-forward, cooperative relaying system that comprises a source, a destination, and N relays, placed arbitrarily on the plane and suffering from interference by a set ofinterferers placed according to a spatial Poisson process. In each transmission attempt, first the transmitter sends a packet; subsequently, a single one of the relays that received the packet correctly, if such a relay exists, retransmits it. We considerboth selection combining and maximal ratio combining at thedestination, Rayleigh fading, and interferer mobility.We derive expressions for the probability that a single transmission attempt is successful, as well as for the distribution of the transmission attempts until a packet is transmitted successfully. Results provide design guidelines applicable to a wide rangeof systems. Overall, the temporal and spatial characteristics of the interference play a significant role in shaping the system performance. Maximal ratio combining is only helpful when relays are close to the destination; in harsh environments, havingmany relays is especially helpful, and relay placement is critical; the performance improves when interferer mobility increases; and a tradeoff exists between energy efficiency and throughput.},
  doi = {10.1109/TVT.2014.2372633},
  volume = {64},
  number = {10},
  pages = {4655--4669},
  month = {10},
  url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6960905},
  }

• L. Esterle and B. Rinner, Towards self‐aware smart camera collectives, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  Introducing self‐awareness allows smart cameras to implement what they have learnt to improve their performance over time, enabling quicker deployment for security applications

  @misc{0f4de0c751114f3a01511574950902e6,
  abstract = {Introducing self‐awareness allows smart cameras to implement what they have learnt to improve their performance over time, enabling quicker deployment for security applications},
  author = {Esterle, Lukas and Rinner, Bernhard},
  title = {Towards self‐aware smart camera collectives},
  howpublished = {Online},
  month = {10},
  year = {2015},
  url = {http://www.focas-reading-room.eu/towards-self\%E2\%80\%90aware-smart-camera-collectives/},
  }

• W. Elmenreich, B. Heiden, G. Reiner, and S. Zhevzhyk, “A low-cost robot for multi-robot experiments,” in 12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015), , 2015, p. 127–132.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9518c7b9601518ec0f48a00f1,
  author = {Elmenreich, Wilfried and Heiden, Bernhard and Reiner, Gerald and Zhevzhyk, Sergii},
  title = {{A low-cost robot for multi-robot experiments}},
  booktitle = {12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015)},
  year = {2015},
  pages = {127--132},
  month = {10},
  isbn = {978-88-87548-06-8},
  url = {http://mobile.aau.at/publications/elmenreich-2015-a\_low-cost\_robot\_for\_multi-robot\_experiments.pdf},
  }

• T. Dittrich and W. Elmenreich, “Comparison of a spatially-structured cellular evolutionary algorithm to an evolutionary algorithm with panmictic population,” in 12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015), , 2015, p. 145–149.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9518c7b96015191c1e23f032f,
  author = {Dittrich, Thomas and Elmenreich, Wilfried},
  title = {{Comparison of a spatially-structured cellular evolutionary algorithm to an evolutionary algorithm with panmictic population}},
  booktitle = {12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015)},
  year = {2015},
  pages = {145--149},
  month = {10},
  isbn = {978-8-8875-4808-2},
  url = {http://mobile.aau.at/publications/dittrich-2015-comparison\_spatially\_structured\_cellular\_ea\_to\_panmictic\_population\_ea.pdf},
  }

• M. Rabl-Pöchacker and W. Elmenreich, “Model implementation for the extendable open source power system simulator RAPSim,” in 12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015), , 2015, p. 103–108.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c9518c7b96015191be49780317,
  author = {Rabl-Pöchacker, Manfred and Elmenreich, Wilfried},
  title = {{Model implementation for the extendable open source power system simulator RAPSim}},
  booktitle = {12th Workshop on Intelligent Solutions in Embedded Systems (WISES 2015)},
  year = {2015},
  pages = {103--108},
  month = {10},
  isbn = {978-88-87548-06-8},
  url = {http://mobile.aau.at/publications/poechacker-2015-model\_implementation\_for\_the\_extendable\_open\_source\_power\_system\_simulator\_rap},
  }

• A. Pittolo and A. M. Tonello, New Results in Channel Modelling, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  The increasing amount of data connectivity demand motivates the development of new and effectively channel models, able to faithfully describe the communication medium. These models allow to quickly develop and test new devices, allowing a considerable saving in time and costs. The aim of this paper is to assess the channel properties and to categorize the most common channel modeling strategies, highlighting strengths and weaknesses. The thorough knowledge of the properties and relations between the most representative channel metrics allowed the development of a novel top-down synthetic channel model. Results are provided concerning different available measurement databases, carried out in different countries, and comparing the experimental measure with the simulated channels. The focus is on broadband low and medium voltage lines, for both indoor and outdoor scenarios.

  @misc{0f4de0c751a14ce50151a4faccde010c,
  abstract = {The increasing amount of data connectivity demand motivates the development of new and effectively channel models, able to faithfully describe the communication medium. These models allow to quickly develop and test new devices, allowing a considerable saving in time and costs. The aim of this paper is to assess the channel properties and to categorize the most common channel modeling strategies, highlighting strengths and weaknesses. The thorough knowledge of the properties and relations between the most representative channel metrics allowed the development of a novel top-down synthetic channel model. Results are provided concerning different available measurement databases, carried out in different countries, and comparing the experimental measure with the simulated channels. The focus is on broadband low and medium voltage lines, for both indoor and outdoor scenarios.},
  author = {Pittolo, Alberto and Tonello, Andrea M.},
  title = {New Results in Channel Modelling},
  howpublished = {Online},
  month = {9},
  year = {2015},
  url = {http://ecs.aau.at/WSPLC15/Program.html},
  }

• A. M. Tonello, Narrowband PLC, Broadband PLC and Next Generation PLC, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  The high amount of applications to be implemented in the Smart Grid requires bi-directional connectivity between a multitude of nodes with a reliable, high speed, low latency, energy efficient and cost effective communication technology. Power line communication (PLC) has the potentiality to meet the requirements. Indeed, there exists space for PLC technology improvements and to overcome the challenges mostly due to a hostile communication medium. There are two considered frequency spectra: a narrowband (3-500 kHz) spectrum and a broad band (1.8-86 MHz) spectrum that are exploited by current technology. In this paper, we discuss the usage of these spectra both in LV and MV networks, highlighting pros and cons and advocating the realization of an adaptive technology that can cognitively make the best usage of available resources so that the requirements of reliability, latency and coverage can be met.

  @misc{0f4de0c751a14ce50151a50128dc0128,
  abstract = {The high amount of applications to be implemented in the Smart Grid requires bi-directional connectivity between a multitude of nodes with a reliable, high speed, low latency, energy efficient and cost effective communication technology. Power line communication (PLC) has the potentiality to meet the requirements. Indeed, there exists space for PLC technology improvements and to overcome the challenges mostly due to a hostile communication medium. There are two considered frequency spectra: a narrowband (3-500 kHz) spectrum and a broad band (1.8-86 MHz) spectrum that are exploited by current technology. In this paper, we discuss the usage of these spectra both in LV and MV networks, highlighting pros and cons and advocating the realization of an adaptive technology that can cognitively make the best usage of available resources so that the requirements of reliability, latency and coverage can be met.},
  author = {Tonello, Andrea M.},
  title = {Narrowband PLC, Broadband PLC and Next Generation PLC},
  howpublished = {Online},
  month = {9},
  year = {2015},
  url = {http://ecs.aau.at/WSPLC15/Program.html},
  }

• R. M. W. Masood and J. F. Schmidt, “Demo: Exploring Autoregressive Integrated Models for Time Synchronization in Wireless Sensor Networks,” in ACM Proceedings on Mobile Computing and Networking (MobiCom), New York, NY: ACM – New York, 2015, p. 204–206. doi:10.1145/2789168.2789182
  [BibTeX] [Abstract] [Download PDF]
  

  Time synchronization provides the basis for several applications in wireless sensor networks but the limited memory and computational power, and the use of low precision oscillators make the task of time synchronization non-trivial. In this demonstration, we present a novel time synchronization scheme that is based on time series analysis. To provide a general model for the practical behavior of low precision oscillators, autoregressive integrated moving average models are explored. Based on the analysis of experimental data, an autoregressive integrated model (ARI (1,1)) is derived. Unlike the resource hungry Kalman filter based formulations, the proposed scheme is resource eefficient as it results in simple linear regression processing. Experiments are performed on real sensor devices including Zolertia and TelosB, where an accuracy below 1 clock tick is achieved.

  @incollection{0f4de0c75013a4d3015014a611df0208,
  author = {Masood, Rao Muhammad Wasif and Schmidt, Jorge Friedrich},
  title = {{Demo: Exploring Autoregressive Integrated Models for Time Synchronization in Wireless Sensor Networks}},
  booktitle = {ACM Proceedings on Mobile Computing and Networking (MobiCom)},
  publisher = {ACM - New York},
  year = {2015},
  abstract = {Time synchronization provides the basis for several applications in wireless sensor networks but the limited memory and computational power, and the use of low precision oscillators make the task of time synchronization non-trivial. In this demonstration, we present a novel time synchronization scheme that is based on time series analysis. To provide a general model for the practical behavior of low precision oscillators, autoregressive integrated moving average models are explored. Based on the analysis of experimental data, an autoregressive integrated model (ARI (1,1)) is derived. Unlike the resource hungry Kalman filter based formulations, the proposed scheme is resource eefficient as it results in simple linear regression processing. Experiments are performed on real sensor devices including Zolertia and TelosB, where an accuracy below 1 clock tick is achieved.},
  doi = {10.1145/2789168.2789182},
  series = {SIGMOBILE ACM Special Interest Group on Mobility of Systems, Users, Data and Computing},
  pages = {204--206},
  address = {New York, NY},
  month = {9},
  isbn = {978-1-4503-3619-2},
  url = {http://doi.acm.org/10.1145/2789168.2789182},
  }

• R. M. W. Masood and J. F. Schmidt, “Exploring Autoregressive Integrated Models for Time Synchronization in Wireless Sensor Networks,” in ACM Proceedings of Workshop on Wireless of the Students, by the Students, & for the Students (S3), New York, NY: ACM – New York, 2015, p. 31–33. doi:10.1145/2801694.2801699
  [BibTeX] [Abstract] [Download PDF]
  

  Time synchronization provides the basis for several applications in wireless sensor networks but the limited memory and computational power, and the use of low precision oscillators make the task of time synchronization non-trivial. In this demonstration, we present a novel time synchronization scheme that is based on time series analysis. To provide a general model for the practical behavior of low precision oscillators, autoregressive integrated moving average models are explored. Based on the analysis of experimental data, an autoregressive integrated model (ARI (1,1)) is derived. Unlike the resource hungry Kalman filter based formulations, the proposed scheme is resource eefficient as it results in simple linear regression processing. Experiments are performed on real sensor devices including Zolertia and TelosB, where an accuracy below 1 clock tick is achieved.

  @incollection{0f4de0c75013a4d3015014baba100254,
  author = {Masood, Rao Muhammad Wasif and Schmidt, Jorge Friedrich},
  title = {{Exploring Autoregressive Integrated Models for Time Synchronization in Wireless Sensor Networks}},
  booktitle = {ACM Proceedings of Workshop on Wireless of the Students, by the Students, \& for the Students (S3)},
  publisher = {ACM - New York},
  year = {2015},
  abstract = {Time synchronization provides the basis for several applications in wireless sensor networks but the limited memory and computational power, and the use of low precision oscillators make the task of time synchronization non-trivial. In this demonstration, we present a novel time synchronization scheme that is based on time series analysis. To provide a general model for the practical behavior of low precision oscillators, autoregressive integrated moving average models are explored. Based on the analysis of experimental data, an autoregressive integrated model (ARI (1,1)) is derived. Unlike the resource hungry Kalman filter based formulations, the proposed scheme is resource eefficient as it results in simple linear regression processing. Experiments are performed on real sensor devices including Zolertia and TelosB, where an accuracy below 1 clock tick is achieved.},
  doi = {10.1145/2801694.2801699},
  series = {SIGMOBILE ACM Special Interest Group on Mobility of Systems, Users, Data and Computing},
  pages = {31--33},
  address = {New York, NY},
  month = {9},
  isbn = {978-1-4503-3701-4},
  url = {http://doi.acm.org/10.1145/2801694.2801699},
  }

• A. Papaiz and A. M. Tonello, “Particle Filtering with Weight Reshaping for Opportunistic Angle of Arrival Estimation in a Vehicular Scenario,” in Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015, Piscataway (NJ): IEEE, 2015.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c951ce98610152173d410f11c2,
  author = {Papaiz, Andrea and Tonello, Andrea M.},
  title = {{Particle Filtering with Weight Reshaping for Opportunistic Angle of Arrival Estimation in a Vehicular Scenario}},
  booktitle = {Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015},
  publisher = {IEEE},
  year = {2015},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-4799-8748-1},
  url = {http://ieeexplore.ieee.org/Xplore/home.jsp},
  }

• M. De Piante and A. M. Tonello, “RF Architecture for Wireless Sensor Network Coverage Improvement,” in Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015, Piscataway (NJ): IEEE, 2015.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c951ce986101521735445b1195,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{RF Architecture for Wireless Sensor Network Coverage Improvement}},
  booktitle = {Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015},
  publisher = {IEEE},
  year = {2015},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-4799-8748-1},
  url = {http://ieeexplore.ieee.org/Xplore/home.jsp},
  }

• M. De Piante and A. M. Tonello, “Transmitter Front-end for Impulsive Broad Band Power Line Communications,” in Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015, Piscataway (NJ): IEEE, 2015.
  [BibTeX] [Download PDF]

  @incollection{0f4de0c951ce98610152173a8e5e11ad,
  author = {De Piante, Marco and Tonello, Andrea M.},
  title = {{Transmitter Front-end for Impulsive Broad Band Power Line Communications}},
  booktitle = {Proc. of IEEE International Conference on Consumer Electronics (ICCE) 2015},
  publisher = {IEEE},
  year = {2015},
  address = {Piscataway (NJ)},
  month = {9},
  isbn = {978-1-4799-8748-1},
  url = {http://ieeexplore.ieee.org/Xplore/home.jsp},
  }

• T. Khatib and W. Elmenreich, “A Model for Hourly Solar Radiation Data Generation from Daily Solar Radiation Data Using a Generalized Regression Artificial Neural Network,” International Journal of Photoenergy, 2015. doi:10.1155/2015/968024
  [BibTeX] [Download PDF]

  @article{0f4de0c9518c7b9601518e1eb24a0039,
  author = {Khatib, Tamer and Elmenreich, Wilfried},
  title = {{A Model for Hourly Solar Radiation Data Generation from Daily Solar Radiation Data Using a Generalized Regression Artificial Neural Network}},
  journal = {International Journal of Photoenergy},
  year = {2015},
  doi = {10.1155/2015/968024},
  month = {9},
  url = {http://downloads.hindawi.com/journals/ijp/2015/968024.pdf},
  }

• M. M. Schranz and B. Rinner, “Resource-Aware Dynamic Clustering Utilizing State Estimation in Visual Sensor Networks,” Sensors and Transducers Journal, vol. 191, iss. 8, p. 28–39, 2015.
  [BibTeX] [Abstract] [Download PDF]
  

  Generally, resource-awareness plays a key role in wireless sensor networks due the limitedcapabilities in processing, storage and communication. In this paper we present a resource-aware cooperativestate estimation facilitated by a dynamic cluster-based protocol in a visual sensor network (VSN). The VSNconsists of smart cameras, which process and analyze the captured data locally. We apply a state estimationalgorithm to improve the tracking results of the cameras. To design a lightweight protocol, the final aggregationof the observations and state estimation are only performed by the cluster head. Our protocol is based on amarket-based approach in which the cluster head is elected based on the available resources and a visibilityparameter of the object gained by the cluster members. We show in simulations that our approach reduces thecosts for state estimation and communication as compared to a fully distributed approach. As resourceawarenessis the focus of the clusterbased protocol we can accept a slight degradation of the accuracy on theobject’s state estimation by a standard deviation of about 1.48 length units to the available ground truth.

  @article{0f4de0c94fe07bfb014feea3982b002e,
  author = {Schranz, Melanie Marianne and Rinner, Bernhard},
  title = {{Resource-Aware Dynamic Clustering Utilizing State Estimation in Visual Sensor Networks}},
  journal = {Sensors and Transducers Journal},
  year = {2015},
  abstract = {Generally, resource-awareness plays a key role in wireless sensor networks due the limitedcapabilities in processing, storage and communication. In this paper we present a resource-aware cooperativestate estimation facilitated by a dynamic cluster-based protocol in a visual sensor network (VSN). The VSNconsists of smart cameras, which process and analyze the captured data locally. We apply a state estimationalgorithm to improve the tracking results of the cameras. To design a lightweight protocol, the final aggregationof the observations and state estimation are only performed by the cluster head. Our protocol is based on amarket-based approach in which the cluster head is elected based on the available resources and a visibilityparameter of the object gained by the cluster members. We show in simulations that our approach reduces thecosts for state estimation and communication as compared to a fully distributed approach. As resourceawarenessis the focus of the clusterbased protocol we can accept a slight degradation of the accuracy on theobject’s state estimation by a standard deviation of about 1.48 length units to the available ground truth.},
  volume = {191},
  number = {8},
  pages = {28--39},
  month = {8},
  url = {http://www.sensorsportal.com/HTML/DIGEST/P\_2704.htm},
  }

• A. Gogolev, N. Marchenko, C. Bettstetter, and L. Marcenaro, “Distributed Binary Consensus in Networks with Disturbances,” ACM Transactions on Autonomous and Adaptive Systems, vol. 10, iss. 3, 2015. doi:10.1145/2746347
  [BibTeX] [Download PDF]

  @article{0f4de0c74fef529c014ff5029c840259,
  author = {Gogolev, Alexander and Marchenko, Nikolaj and Bettstetter, Christian and Marcenaro, Lucio},
  title = {{Distributed Binary Consensus in Networks with Disturbances}},
  journal = {ACM Transactions on Autonomous and Adaptive Systems},
  year = {2015},
  doi = {10.1145/2746347},
  volume = {10},
  number = {3},
  month = {8},
  url = {http://dl.acm.org/ft\_gateway.cfm?id=2746347\&ftid=1617269\&dwn=1\&CFID=546183667\&CFTOKEN=45651280},
  }

• B. Rinner, L. Esterle, J. Simonjan, G. Nebehay, R. Pflugfelder, P. R. Lewis, and G. F. Domínguez, “Self-aware and Self-expressive Camera Networks,” IEEE Computer, vol. 48, iss. 7, p. 21–28, 2015. doi:10.1109/MC.2015.209
  [BibTeX] [Abstract] [Download PDF]
  

  Smart cameras perform on-board image analysis, adapt their algorithms to changes in their environment, and collaborate with other networked cameras to analyze the dynamic behavior of objects. A proposed computational framework adopts the concepts of self-awareness and selfexpression to more efficiently manage the complex tradeoffs among performance, flexibility, resources, and reliability.

  @article{0f4de0c94e25f0ee014e29bd4e5b0060,
  author = {Rinner, Bernhard and Esterle, Lukas and Simonjan, Jennifer and Nebehay, Georg and Pflugfelder, Roman and Lewis, Peter R. and Domínguez, Gustavo Fernández},
  title = {{Self-aware and Self-expressive Camera Networks}},
  journal = {IEEE Computer},
  year = {2015},
  abstract = {Smart cameras perform on-board image analysis, adapt their algorithms to changes in their environment, and collaborate with other networked cameras to analyze the dynamic behavior of objects. A proposed computational framework adopts the concepts of self-awareness and selfexpression to more efficiently manage the complex tradeoffs among performance, flexibility, resources, and reliability.},
  doi = {10.1109/MC.2015.209},
  volume = {48},
  number = {7},
  pages = {21--28},
  month = {7},
  url = {https://pervasive.aau.at/publications/pdf/Rinner\_Computer2015.pdf},
  }