On the feasibility of full-duplex relaying powered by wireless energy transfer

Taneli Riihonen, Long Zhao, Mikko Vehkapera, Xiaodong Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

6 Citations (Scopus)

Abstract

We consider a wireless two-hop downlink communication system where a grid-connected source node transmits data to a destination node with the assistance of a full-duplex (FD) relay that is powered by wireless energy harvesting. The relay splits its received signal from the first hop into two streams for energy harvesting and information decoding, respectively. Meanwhile, it also forwards the decoded information to the second hop utilizing a portion of the harvested energy. To maximize the data rate, the power splitting factor and energy consumption proportion are jointly optimized in the case of single-antenna transceivers. The analytical results are then used for studying the feasibility of full-duplex relaying and wireless energy transfer. As for the main conclusions, we note that so-called self-energy recycling gives marginal gain for the considered system and relaying at large is useful only when the direct source-to-destination link is very weak. The latter aspect is pronounced in the considered system especially due to the presence of residual full-duplex self-interference and the fact that the relay is powered by an extremely scarce source, i.e., wireless energy transfer.

Original languageEnglish
Title of host publicationSPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
PublisherIEEE
Volume2016-August
ISBN (Electronic)9781509017492
DOIs
Publication statusPublished - 9 Aug 2016
MoE publication typeA4 Article in a conference publication
EventIEEE International Workshop on Signal Processing Advances in Wireless Communications - Edinburgh, United Kingdom
Duration: 3 Jul 20166 Jul 2016
Conference number: 17

Publication series

NameIEEE International Workshop on Signal Processing Advances in Wireless Communications
ISSN (Print)2325-3789

Workshop

WorkshopIEEE International Workshop on Signal Processing Advances in Wireless Communications
Abbreviated titleSPAWC
CountryUnited Kingdom
CityEdinburgh
Period03/07/201606/07/2016

Keywords

  • Decode-and-forward (DF)
  • energy harvesting
  • full duplex
  • power allocation
  • relaying
  • wireless power transfer

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