广义空间调制系统的安全传输映射方案  

Mapping Scheme of Secure Transmission for Generalized Spatial Modulation System

作　　者：陈发堂[1] 陈嘉田 李秀 CHEN Fatang;CHEN Jiatian;LI Xiu(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院

出　　处：《计算机工程》2020年第2期148-153,共6页Computer Engineering

基　　金：国家科技重大专项(2017ZX03001021-004);重庆教委科学技术研究项目(KJ1500428)

摘　　要：为提高时分双工无线通信系统中广义空间调制(GSM)的安全性,提出一种新的GSM安全传输映射方案。将合法信道状态信息引入映射过程中,分别重选由空间比特和星座比特映射的激活天线组合索引和星座符号索引,以增强GSM系统的安全性。仿真结果表明,该方案中的被动窃听者无法恢复激活天线组合索引与星座符号索引所携带的信息,其保密速率初始值较基于空间调制的方案提高184.31%,增强了系统的安全性。This paper proposes a new mapping scheme of secure transmission for Generalized Spatial Modulation(GSM)systems to improve GSM security in a time division duplex wireless communication system.The state information of legitimate channels is introduced into the mapping process.Then the active antenna combination index and constellation symbol index mapped by the space bit and the constellation bit are reselected to enhance system security.Simulation results show that the passive eavesdropper in this scheme is unable to recover the information carried by the active antenna combination index and the constellation symbol index.The initial value of the secrecy rate is increased by 184.31%compared with the scheme based on spatial modulation,demonstrating that the proposed scheme can enhance system security.

关 键 词：广义空间调制 映射方案 合法信道状态信息 保密速率 误比特率 

分 类 号：TN929.5[电子电信—通信与信息系统]