Joint Relay Beamforming and Power Splitting Ratio Optimization in a Multi-Antenna Relay Network

Yuan, Y; Chu, Z; Ding, ZG; Cumanan, K; Johnston, M

doi:10.1109/WCSP.2014.6992047

Joint Relay Beamforming and Power Splitting Ratio Optimization in a Multi-Antenna Relay Network

Lookup NU author(s): Yi Yuan, Zheng Chu, Dr Zhiguo Ding, Dr Kanapathippillai Cumanan, Dr Martin Johnston ORCiD

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

This paper investigates simultaneous wireless information and power transfer (SWEPT) in a multi-antenna relay network. We consider robust transmit power minimization problem at the relay by jointly optimizing beamforming and adaptive power splitting subject to the signal-to-inference-plus-noise (SINR) and energy harvesting constraints by incorporating channel uncertainty model. We formulate the original non-convex problem into semidefinite programming problem (SDP) by relaxing rank-one constraint and we show the optimal solution of SDP is always rank-one. Simulation results are provided to validate the performance of the proposed robust algorithms.