Subproject B02
Subproject B02
Protocols and Algorithms for Energy-Efficient Reference Signal and EMG Sensor Data Transmission Integrating Local Energy Harvesting
In Subproject B02, we develop mathematical models, algorithms, and protocols for transmitting data and reference signals between wireless EmpkinS EMG beacons and a base station with a central data processing unit. The EMG sensors considered in this subproject do not rely on built-in batteries, but harvest power, which is required for operating, from the received radio-frequency signals and ambient optical radiation (sunlight or indoor illumination) using electrical rectifying circuits and photovoltaic cells, respectively. First, we analyze the electrical characteristics of the designed EmpkinS sensors and develop analytical models to mathematically characterize their input-output behavior. Next, utilizing the developed models and considering the physical characteristics of wireless channels, we derive the optimal downlink transmit signal at the base station that maximizes the energy delivered to the remote EmpkinS beacons. Finally, we develop novel energy-efficient protocols and resource allocation schemes for the designed multi-user communication networks, where energy and recorded information are transferred in the downlink and uplink, respectively.
Contacts
Prof. Dr.-Ing. Robert Schober
Principal Investigator
Kenneth Mayer, M.Sc
Doctoral Candidate
Prof. Dr. Laura Cottatellucci
Associated Member
Additional Information
- Sippel E, Hehn M, Kögel T, Gröschel P, Hofmann A, Brückner S, Geiß J, Schober R, Vossiek M: Quasi-Coherent Phase-Based Localization and Tracking of Incoherently Transmitting Radio Beacons IEEE Access (2021)
- Wei Z, Yu X, Ng DWK, Schober R: Resource Allocation for Simultaneous Wireless Information and Power Transfer Systems: A Tutorial Overview Proceedings of the IEEE (2021)
- Xu D, Jamali V, Yu X, Ng DWK, Schober R: Optimal Resource Allocation Design for Large IRS-Assisted SWIPT Systems: A Scalable Optimization Framework IEEE Transactions on Communications (2022)
- Shanin N, Schober R, Cottatellucci L: Optimal Transmit Strategy for Multi-User MIMO WPT Systems With Non-Linear Energy Harvesters IEEE Transactions on Communications (2022)
- Mayer K, Del Vecchio A, Eskofier B, Farina D: Unsupervised neural decoding of signals recorded by thin-film electrode arrays implanted in muscles using autoencoding with a physiologically derived optimisation criterion Biomedical Signal Processing and Control (2023)
- Shanin N, Hagelauer A, Cottatellucci L, Schober R: Optimal Energy Signal Design for Multi-user MISO WPCNs with Non-linear Energy Harvesting Circuits IEEE Transactions on Communications (2023)
- Brückner S, Weber J, Michler F, Shanin N, Schober R, Hagelauer A, Weigel R, Gaßner H, Winkler J, Eskofier B, Vossiek M: A Wireless Joint Communication and Localization EMG-Sensing Concept for Movement Disorder Assessment IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology (2023)