南京理工大学学报（自然科学版）2019，Vol.43Issue(1)：29-34,6.DOI:10.14177/j.cnki.32-1397n.2019.43.01.004
自适应窃听和干扰下机会式中继和协作干扰技术的安全性能分析
Secure performance analysis of opportunistic relay and cooperative jamming technique under adaptive eavesdropping and jamming
摘要
Abstract
A multi-relay cooperative communication model is considered, where there exists a half-duplex adaptive eavesdropper that performs either passive eavesdropping or active jamming. To improve the performance in ergodic achievable secrecy rate ( EASR ) , one cooperative relay is selected to assist the source node to transmit information,and the remaining relays are used to send artificial jamming to confuse the eavesdropper. Under the assumption that only the statistical channel state information of the eavesdropper is known,the asymptotic closed-form expression for the EASR is derived,and Monte-Carlo simulations are conducted to validate the derivations. Simulation results show that the asymptotic analysis results coincide well with the simulation results even when the number of relays are relatively small,and meanwhile,the combined opportunistic relaying and coop-erative jamming technique can significantly improve the secure transmission performance of the system.关键词
物理层安全/自适应窃听者/机会式中继/协作干扰/遍历可达安全速率/半双工/协作通信Key words
physical layer security/adaptive eavesdropper/opportunistic relay/cooperative jamming/ergodic achievable secrecy rate/half-duplex/cooperative communication分类
信息技术与安全科学引用本文复制引用
贾丽君,贺玉成,周林..自适应窃听和干扰下机会式中继和协作干扰技术的安全性能分析[J].南京理工大学学报（自然科学版）,2019,43(1):29-34,6.基金项目
福建省自然科学基金(2018J01096) （2018J01096）
重庆市/信息产业部"计算机网络与通信技术重点实验室"开放基金(CY-CNCL-2017-05) （CY-CNCL-2017-05）
