Resource allocation in dynamic DF relay for swipt network with circuit power consumption
AuthorPilanawithana, B; Atapattu, S; Evans, J
Source TitleProceedings of the 2019 IEEE Global Communications Conference (GLOBECOM)
University of Melbourne Author/sEvans, Jamie; Atapattu Mudiyanselage, Saman; Pilanawithana, Bhathiya
AffiliationElectrical and Electronic Engineering
Document TypeConference Paper
CitationsPilanawithana, B., Atapattu, S. & Evans, J. (2020). Resource allocation in dynamic DF relay for swipt network with circuit power consumption. Proceedings of the 2019 IEEE Global Communications Conference (GLOBECOM), IEEE. https://doi.org/10.1109/GLOBECOM38437.2019.9013560.
Access StatusThis item is embargoed and will be available on 2021-02-27
ARC Grant codeARC/DP180101205
This paper considers simultaneous wireless information and power transfer (SWIPT) over a dual-hop dynamic decode-and-forward (DF) relay network with the power-splitting (PS) energy harvesting protocol at the relay. The circuit power consumption (CPC), which includes power requirements for both decoding and encoding circuits, is considered at the relay. For a rate- dependent linear CPC model, we formulate an optimization problem to decide the optimal throughput, PS ratio, relay transmit power and time ratio for the source to relay transmission. Although the resultant optimization problem is nonconvex, we derive an efficient optimization algorithm, requiring significantly less floating point operations than an interior point method. Finally, we present numerical results which lead to some interesting insights for system design.
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