期望接收机和窃听接收机位置相邻物理层安全通信方案  

Physical-layer security wireless transmission synthesis scheme for proximal desired receiver user and eavesdropper

作　　者：高建邦 袁朝辉[1] 邱彬[3] GAO Jianbang;YUAN Zhaohui;QIU Bin(School of Automation, Northwestern Polytechnical University, Xi’an 710072, China;School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China;School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China)

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]西安石油大学电子工程学院,陕西西安710065 [3]西北工业大学电子信息学院,陕西西安710072

出　　处：《系统工程与电子技术》2020年第5期1160-1165,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(51505381,51874238,51275423)资助课题。

摘　　要：针对期望接收机和窃听接收机位置相邻,即期望信道和窃听信道高度耦合的情况下安全无线通信问题,提出了基于频控阵的物理层安全通信方案。首先,考虑窃听接收机位置已知,通过自适应遗传算法得到发射阵元间最优时不变频率增量,最大化系统的保密容量;同时,在基带信号中添加人工噪声,降低窃听端的信噪比。其次,改进优化方案,实现窃听端未知情况下的安全通信。最后,进行仿真对比实验,验证了方案的安全性能。For the secure wireless communication of the proximal desired receiver user and the eavesdropper,i.e.,channels of the legitimate user and the eavesdropper are highly correlated,a physical-layer security wireless transmission synthesis based on frequency diverse arrays is proposed.Firstly,for the physical layer security problems for knowing locations of the eavesdropper,the optimal frequency in the crement across transmit element is obtained by the adaptive genetic algorithm to maximize the secrecy capacity.And then the artificial noise and the design projection matrix are added to reduce the signal-to-noise ratio of the eavesdropper user.Furthermore,the proposed approach is extended to the case of the unknown location of the eavesdropper.Finally,numerical results show that the proposed method can provide the satisfactory secrecy capacity.

关 键 词：物理层安全 频控阵 人工噪声 

分 类 号：TN918.91[电子电信—通信与信息系统]