Joint Power Allocation and Splitting (JoPAS) for SWIPT in time-variant wireless channels

Dexin Wang, Xiang Cheng, Liuqing Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In recent years, the capacity and charging speed of batteries have become the bottleneck of mobile communications systems. With the development of wireless power transfer technologies, simultaneous wireless information and power transfer (SWIPT) becomes a possible alternative. Due to the limitations of practical circuit implementation, the energy harvesting circuit cannot directly decode the information carried by the same signal. Hence, the problem of optimal power splitting at the receiver arises in addition to the conventional problem of power allocation in communication systems. In this paper, the joint power allocation and splitting (JoPAS) for SWIPT over a timevariant channel is proposed with the objective of maximizing the achievable data rate with constraints on the delivered power. Simulations show significantly improved performance compared with the existing dynamic power splitting scheme. A suboptimal algorithm, named decoupled power allocation and splitting (DePAS), is also proposed with dramatically reduced computational complexity and simulations demonstrate its near optimum performance.

Original languageEnglish (US)
Title of host publication2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509013289
DOIs
StatePublished - 2016
Externally publishedYes
Event59th IEEE Global Communications Conference, GLOBECOM 2016 - Washington, United States
Duration: Dec 4 2016Dec 8 2016

Publication series

Name2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings

Other

Other59th IEEE Global Communications Conference, GLOBECOM 2016
Country/TerritoryUnited States
CityWashington
Period12/4/1612/8/16

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