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Title: Throughput analysis and optimization of wireless-powered multiple antenna full-duplex relay systems
Authors: Mohammadi, Mohammadali
Chalise, Batu K.
Suraweera, Himal A.
Zhong, Caijun
Zheng, Gan
Krikidis, Ioannis
Keywords: Full-duplex
Wireless power transfer
Decodeand- forward relay
Outage probability
Issue Date: 2016
Publisher: © IEEE
Citation: MOHAMMADI, M. ...et al., 2016. Throughput analysis and optimization of wireless-powered multiple antenna full-duplex relay systems. IEEE Transactions on Communications, 64(4), pp. 1769-1785.
Abstract: © 2016 IEEE.We consider a full-duplex (FD) decode-and-forward system in which the time-switching protocol is employed by the multiantenna relay to receive energy from the source and transmit information to the destination. The instantaneous throughput is maximized by optimizing receive and transmit beamformers at the relay and the time-split parameter. We study both optimum and suboptimum schemes. The reformulated problem in the optimum scheme achieves closed-form solutions in terms of transmit beamformer for some scenarios. In other scenarios, the optimization problem is formulated as a semidefinite relaxation problem and a rank-one optimum solution is always guaranteed. In the suboptimum schemes, the beamformers are obtained using maximum ratio combining, zero-forcing, and maximum ratio transmission. When beamformers have closed-form solutions, the achievable instantaneous and delay-constrained throughput are analytically characterized. Our results reveal that beamforming increases both the energy harvesting and loop interference suppression capabilities at the FD relay.Moreover, simulation results demonstrate that the choice of the linear processing scheme as well as the time-split plays a critical role in determining the FD gains.
Description: © IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Accepted for publication
DOI: 10.1109/TCOMM.2016.2527785
URI: https://dspace.lboro.ac.uk/2134/23287
Publisher Link: http://dx.doi.org/10.1109/TCOMM.2016.2527785
ISSN: 0090-6778
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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