Directional modulation with distributed receiver selection for secure wireless communications  

作　　者：Hongyan ZHANG Yue XIAO Wanbin TANG Gang WU Hong NIU Xiaotian ZHOU 

机构地区：[1]National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology of China,Chengdu 611731.China [2]Science and Technology on Communication Networks Laboratory,The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China

出　　处：《Science China(Information Sciences)》2021年第12期211-221,共11页中国科学（信息科学）（英文版）

基　　金：supported by National Key R&D Program of China (Grant No. 2018YFB1800800);National Natural Science Foundation of China (Grant No. 61671131);Project from the Science and Technology on Communication Networks Laboratory;the 54th Research Institute of China Electronics Technology Group Corporation (CETC) (Grant No. 6142104180407)。

摘　　要：In this paper, a novel directional modulation with distributed receiver selection(DM-DRS)scheme is proposed for secure wireless communications. In DM-DRS, a particular subset of receivers is activated and part of the information bits are modulated by the index of the activation pattern, in addition to traditional digital modulation. Especially, the scrambling matrix is introduced for the sake of preventing the eavesdropping. Moreover, the performances of bit error rate(BER) in terms of the union bound for both the legitimate user and eavesdropper are respectively derived in the context of an optimal joint maximum likelihood(ML) detector, and the theoretical BER upper bounds are demonstrated to be tight by the numerical results. In the context of the discrete-input and continuous-output system, the ergodic secrecy rates of the legitimate user and the eavesdropper are obtained, the secrecy rate is also quantified. Furthermore,our numerical results exhibit that DM-DRS can achieve an increased transmission rate compared to its traditional directional modulation with cooperative receivers(DM-CR) and spatial and direction modulation(SDM) counterparts, while guaranteeing an improved BER performance.

关 键 词：directional modulation distributed receiver selection bit error rate secrecy rate 

分 类 号：TN92[电子电信—通信与信息系统]