Secure Beamforming Design for Full-Duplex Energy-Constrained Relaying Networks

被引：0
作者：
Chen P.-P. [1 ]
Li T.-S. [1 ]
Ge Z.-H. [1 ]
Fang X. [2 ]
机构：
[1] School of Computer and Electronic Information, Guangxi University, Nanning
[2] School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2020年 / 43卷 / 02期
关键词：
Beamforming; Energy harvesting; Full-duplex relay; Physical layer security; Simultaneous wireless information and power transfer;
D O I：
10.13190/j.jbupt.2019-110
中图分类号：
学科分类号：
摘要：
In order to solve the problem of optimizing the security rate of full duplex relay eavesdropping channel with energy harvesting capability, a secure beamforming design was proposed under simultaneous wireless information and power transfer (SWIPT) method. An optimization problem was considered aiming to maximize the secrecy rate of the system by jointly optimizing the beamforming matrix, energy signal covariance matrix and the power splitting ration under the constraint of the energy harvesting of the relay and energy-harvesting node. Since this problem is a non-convex secrecy rate maximization (SRM) problem, We use a step-by-step optimization approach to turn the objective problem into two sub-problems was decoupled. The first subproblem can be recast as a two-level optimization problem. Among them, the outer optimization problem was solved by one-dimensional search, and the inner optimization problem was solved by semidefinite relaxation (SDR) technique. The second subproblem can be solved by one-dimensional search. Simulation results show that the proposed method increases the security rate of the system. © 2020, Editorial Department of Journal of Beijing University of Posts and Telecommunications. All right reserved.
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页码：59 / 65and79
页数：6520
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