Secrecy rate analysis of dual-hop AF relay wiretap channel  

作　　者：丁飞 Song Aiguo Li Jianqing Wu Zhenyang 

机构地区：[1]School of Information Science and Engineering,Southeast University [2]Research and Development Center,China Mobile Group Jiangsu Co.,Ltd [3]School of Instrument Science and Engineering,Southeast University

出　　处：《High Technology Letters》2014年第4期390-394,共5页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61325018,61272379);the National High Technology Research and Development Program of China(No.2006AA04Z246);the Ministry of Education Science and Technology Innovation Engineering Major Cultivation Project of China(No.107053)

摘　　要：An amplify-and-forward(AF) dual-hop relay is proposed for secure communication within Wyner s wiretap channel.Based on an information-theoretic formulation,the average secrecy rate is characterized when two legitimate partners communicate over a quasi-static fading channel.Theoretical analysis and simulation results show that both cooperative strategies of average power scaling(APS) and instantaneous power scaling(IPS) are proved to be able to achieve information-theoretic security,and eavesdropper is unable to decode any information.An amplify-and-forward （AF） dual-hop relay is proposed for secure communication within Wyner＇s wiretap channel.Based on an information-theoretic formulation,the average secrecy rate is characterized when two legitimate partners communicate over a quasi-static fading channel.Theoretical analysis and simulation results show that both cooperative strategies of average power scaling （APS） and instantaneous power scaling （IPS） are proved to be able to achieve information-theoretic security,and eavesdropper is unable to decode any information.

关 键 词：secrecy rate information-theoretic security amplify-and-forward （AF） dual-hop RELAY wiretap channel 

分 类 号：TN918[电子电信—通信与信息系统]