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Intelligent Reflecting Surface Aided Multi-Antenna Secure Transmission

Chu, Zheng, Hao, Wanming, Xiao, Pei and Shi, Jia (2019) Intelligent Reflecting Surface Aided Multi-Antenna Secure Transmission IEEE Wireless Communications Letters.

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Abstract

In this paper, we propose intelligent reflecting surface (IRS) aided multi-antenna physical layer security. We present a power efficient scheme to design the secure transmit power allocation and the surface reflecting phase shift. It aims to minimize the transmit power subject to the secrecy rate constraint at the legitimate user. Due to the non-convex nature of the formulated problem, we propose an alternative optimization algorithm and the semidefinite programming (SDP) relaxation to deal with this issue. Also, the closed-form expression of the optimal secure beamformer is derived. Finally, simulation results are presented to validate the proposed algorithm, which highlights the performance gains of the IRS to improve the secure transmission.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Chu, Zhengzheng.chu@surrey.ac.uk
Hao, Wanmingw.hao@surrey.ac.uk
Xiao, PeiP.Xiao@surrey.ac.uk
Shi, Jiaj.shi@surrey.ac.uk
Date : 24 September 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1109/LWC.2019.2943559
Copyright Disclaimer : © 2019 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Uncontrolled Keywords : Intelligent reflecting surface; Physical-layer secrecy; Secure beamforming; Phase shift; Resource management; Optimization; Physical layer security; Signal processing algorithms; Closed-form solutions; Eigenvalues and eigenfunctions; Programming
Depositing User : Clive Harris
Date Deposited : 04 Nov 2019 08:27
Last Modified : 04 Nov 2019 08:34
URI: http://epubs.surrey.ac.uk/id/eprint/853029

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