信息工程大学学报2024，Vol.25Issue(4)：397-403,7.DOI:10.3969/j.issn.1671-0673.2024.04.004
SWIPT不可信中继系统安全性能的优化
Optimization of Security Performance for SWIPT Untrusted Relay Systems
摘要
Abstract
For a full-duplex time-switching simultaneous wireless information and power transfer(SWIPT)relay system,a scheme for collaborative jamming by the receiver is proposed to improve the performance of physical layer security in the case that the relay is a potential eavesdropper.Besides,an algorithm for joint optimization of the time switching and energy allocation of the source and desti-nation node in the energy transmission and information transmission stages is also given.Firstly,the re-lay node is a full-duplex SWIPT node,which harvests energy from the signals received in the energy transmission stage for signal forwarding in the information transmission stage.Secondly,to prevent the untrusted relay from obtaining confidential information,the full-duplex destination node sends jam-ming signals while receiving signals.Finally,to maximize the achievable secrecy rate,the time switch-ing factor and the energy allocation factors for both transmission stages at the source node and the des-tination node are jointly optimized.Simulation results show that the achievable secrecy rate of the opti-mized system is significantly higher than that of the system that optimizes only two or one of the factors,or no optimization.关键词
无线携能传输/时间切换/协作干扰/能量分配Key words
simultaneous wireless information and energy transfer/time switching/collaborative jam-ming/energy allocation分类
信息技术与安全科学引用本文复制引用
陈艳,欧阳林芳..SWIPT不可信中继系统安全性能的优化[J].信息工程大学学报,2024,25(4):397-403,7.基金项目
重庆市教育委员会科学技术研究计划项目(KJQN202002401) （KJQN202002401）
