Relay selection schemes in threshold DF cooperative systems with wireless power transfer. Issue 8 (May 2020)

• Record Type: Journal Article
• Authors: Yao, Jin; Ye, Jia; Pan, Gaofeng; Xie, Yiyuan; Feng, Quanyuan
• Is Part Of: Journal of the Franklin Institute. Volume 357:Issue 8(2020)
• Page Start: 5091
• Page End: 5109
• Publication Date: 2020-05
• Subjects: Science -- Periodicals; Technology -- Periodicals; Patents -- United States -- Periodicals; 505
• DOI: 10.1016/j.jfranklin.2020.04.005
• Languages: English
• ISSNs: 0016-0032

Abstract

Abstract: In this work, a dual-hop cooperative wireless energy harvesting system, in which there are a Source-Destination ( S − D ) pair and several relay candidates is considered. all relay candidates adopt threshold decode-and-forward (DF) relaying scheme to decide whether to aid S − D pair information transmission or not. We assumed that these relay candidates and S are all equipped with single receiving antenna while D is equipped multiple receiving antenna and adopts generalized selection combining scheme to achieve receiving diversity gain. We also consider that relay candidates and S can harvest energy from D with finite energy storage capacity under time switching scheme. Three kinds of best relay selection (RS) schemes based threshold (TH) DF relay scheme, that is, the TH optimal source-relay link, the TH optimal relay-destination link, and the TH optimal source-relay-destination link, are proposed and studied. Closed-form analytical expressions for the outage probability over the three proposed RS schemes are derived and verified by Monte-Carol simulations.