Wireless Powered Communications With Finite Battery and Finite Blocklength

We analyze a wireless communication system with finite block length and finite battery energy, under quasi-static Nakagami-m fading. Wireless energy transfer is carried out in the downlink while information transfer occurs in the uplink. Transmission strategies for scenarios with/without energy accu...

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Bibliographic Details
Published in:IEEE transactions on communications 2018-04, Vol.66 (4), p.1803-1816
Main Authors: Alcaraz Lopez, Onel L., Garcia Fernandez, Evelio Martin, Demo Souza, Richard, Alves, Hirley
Format: Article
Language:English
Subjects:
Accumulation
Batteries
Codes
Communications systems
Energy consumption
Error probability
Errors
Fading channels
finite battery
Finite blocklength communications
Information transfer
Power consumption
Power control
Relays
Wireless communication
Wireless communications
wireless energy transfer
Wireless power transmission
Wireless sensor networks
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Summary:We analyze a wireless communication system with finite block length and finite battery energy, under quasi-static Nakagami-m fading. Wireless energy transfer is carried out in the downlink while information transfer occurs in the uplink. Transmission strategies for scenarios with/without energy accumulation between transmission rounds are characterized in terms of error probability and energy consumption. A power control protocol for the energy accumulation scenario is proposed and results show the enormous impact on improving the system performance, in terms of error probability and energy consumption. The numerical results corroborate the existence and uniqueness of an optimum target error probability, while showing that a relatively small battery could be a limiting factor for some setups, especially when using the energy accumulation strategy.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2017.2786673