Beamforming optimisation in energy harvesting cooperative full‐duplex networks with self‐energy recycling protocol. Issue 7 (1st May 2016)

• Record Type: Journal Article
• Authors: Hu, Shiyang; Ding, Zhiguo; Ni, Qiang
• Is Part Of: IET communications. Volume 10:Issue 7(2016)
• Page Start: 848
• Page End: 853
• Publication Date: 2016-05-01
• Subjects: array signal processing -- cooperative communication -- protocols -- energy harvesting -- amplify and forward communication -- mathematical programming; energy harvesting cooperative full‐duplex networks -- self‐energy recycling protocol -- amplify‐and‐forward relaying cooperative network -- radio‐frequency signal -- self‐energy recycling relay protocol -- beamforming optimisation problem -- semidefinite programming relaxation method -- SDP relaxation method -- time‐switching relaying protocol -- power‐splitting relaying protocol; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2015.0476
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : This study considers the problem of beamforming optimisation in an amplify‐and‐forward relaying cooperative network, in which the relay node harvests the energy from the radio‐frequency signal. Based on the self‐energy recycling relay protocol, the authors study the beamforming optimisation problem. The formulated problem aims to maximise the achievable rate subject to the available transmitted power at the relay node. The authors develop a semidefinite programming (SDP) relaxation method to solve the proposed problem. They also use SDP and the full search to solve the beamforming optimisation based on a time‐switching relaying protocol as a benchmark. The simulation results are presented to verify that the self‐energy recycling protocol achieves a significant rate gain compared with the time‐switching relaying protocol and the power‐splitting relaying protocol.