快切换空间调制技术研究  

Spatial modulation of fast antenna switch

作　　者：耿飞 洪涛[1] Geng Fei;Hong Tao(College of Telecommunication&Information Engineering,Nanjing University of Post and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《电子技术应用》2018年第11期68-71,共4页Application of Electronic Technique

基　　金：国家自然科学基金项目(61302102)

摘　　要：为了提高空间调制信号的安全性,提出了一种多天线快速切换的空间调制技术方案。单个符号由多根天线快速切换发射,使得发射信号与天线信道信息相关,是一种空间扩频信号。期望接收机根据约定好的天线切换顺序采用相关接收的方法解调信号,由于天线切换顺序的保密,窃听方无法解调信号,获得信息。仿真结果表明,天线的快速切换使得信号隐藏在背景噪声中,相比于传统空间调制信号是一种更好的物理层安全信号。A fast switching spatial modulation scheme is proposed to improve the secrecy performance of the spatial modulation signal.The signal is a space-spread-spectrum signal associated with the channel information because of fast antenna switch.In this way,the desired receiver can demodulate the received signal according to the agreed antenna switching sequence using the relevant receiving method.Without the switching sequence of the information,eavesdroppers cannot get any useful information from the received signal.Simulation results show that the signal hidden in the background noise has a better secrecy performance at physical layer than traditional spatial modulation signal.

关 键 词：空间调制 扩频通信 物理层安全 

分 类 号：TN92[电子电信—通信与信息系统]