全双工能量受限中继网络的安全波束成形设计

doi:10.13190/j.jbupt.2019-110

北京邮电大学学报 ›› 2020, Vol. 43 ›› Issue (2): 59-65,79.doi: 10.13190/j.jbupt.2019-110

全双工能量受限中继网络的安全波束成形设计

陈佩佩¹, 李陶深¹, 葛志辉¹, 方兴²

1. 广西大学计算机与电子信息学院, 南宁 530004;
2. 北京邮电大学电子工程学院, 北京 100876

收稿日期:2019-06-04 发布日期:2020-04-28
通讯作者: 李陶深(1957-),男,教授,博士生导师,E-mail:tshli@gxu.edu.cn. E-mail:tshli@gxu.edu.cn
作者简介:陈佩佩(1993-),女,硕士生.
基金资助:
国家自然科学基金项目（61762020）

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

CHEN Pei-pei¹, LI Tao-shen¹, GE Zhi-hui¹, FANG Xing²

1. School of Computer and Electronic Information, Guangxi University, Nanning 50004, China;
2. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2019-06-04 Published:2020-04-28

摘要/Abstract

摘要： 为了解决全双工能量受限中继网络的无线物理层安全问题，提出了一种基于能量和信息联合传输的安全波束成形方法.在满足中继节点和能量收集节点收集能量的约束条件下，通过联合优化能量信号协方差矩阵、波束成形矩阵和功率分配因子，实现了系统安全速率最大化.目标问题是非凸的，采用分步优化方法将原始问题转化为2个子问题.将第1个子问题转化为双层优化问题，外层优化问题采用一维搜索求解，内层优化问题采用半定松弛技术解决；然后通过一维搜索得到第2个子问题的最优解.仿真结果表明，提出的方法显著提高了系统的安全速率.

关键词: 能量收集, 信息和能量联合传输, 波束成形, 物理层安全, 全双工中继

Abstract: 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.

Key words: energy harvesting, simultaneous wireless information and power transfer, beamforming, physical layer security, full-duplex relay

中图分类号:

TN911.22

陈佩佩, 李陶深, 葛志辉, 方兴. 全双工能量受限中继网络的安全波束成形设计[J]. 北京邮电大学学报, 2020, 43(2): 59-65,79.

CHEN Pei-pei, LI Tao-shen, GE Zhi-hui, FANG Xing. Secure Beamforming Design for Full-Duplex Energy-Constrained Relaying Networks[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(2): 59-65,79.

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全双工能量受限中继网络的安全波束成形设计

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

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