基于MIMO协作干扰对齐网络的保密通信算法  

Secure Communication Method in MIMO Cooperative Interference Alignment Network

作　　者：孙惜媛 解志斌[1,2] 宋科宁 田雨波 张贞凯[1,2] 毛云龙 SUN Xi-yuan;XIE Zhi-bin;SONG Ke-ning;TIAN Yu-bo;ZHANG Zhen-kai;MAO Yun-long(College of Electronic and Information,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Intelligent Marine Information Sensing and Transmission Laboratory,Zhenjiang 212003,China;Unit 95829 of PLA,Xiaogan 432100,China)

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003 [2]镇江市智慧海洋信息感知与传输实验室,江苏镇江212003 [3]解放军95829部队,湖北孝感432100

出　　处：《火力与指挥控制》2021年第6期21-26,31,共7页Fire Control & Command Control

基　　金：国家自然科学基金(61871203,61771225);镇江市智慧海洋信息感知与传输实验室基金资助项目(GX2017004)。

摘　　要：通信系统的保密性在信息化作战体系中尤为重要。在存在窃听的多输入多输出(Multiple-Input Multiple-Output,MIMO)干扰对齐(Interference Alignment,IA)网络中,传统利用接收或发送端发送人工噪声(Artificial Noise,AN)实现物理层保密通信的方法,会增加收发端的能耗与实施复杂度。为此,提出一种基于MIMO协作IA网络的保密通信算法,推导出了算法可行性条件、合法用户传输速率和保密速率、窃听端窃听速率,并给出了相应的基于最小干扰泄露准则的分布式迭代IA实施方法,有效降低系统复杂度。仿真结果表明,所提算法在保证合法用户传输速率的同时抑制窃听速率,有效提高系统安全性能。The confidentiality of communication system is particularly important in the information combat system.In a MIMO interference alignment network with eavesdropping attack,the traditional methods transmit the AN by the receivers or the transmitters to achieve secure communication in the physical layer.These methods will increase the energy consumption and complexity of the transceivers.In this paper,a secure communication method is proposed based on MIMO cooperative interference alignment network.In addition,the feasibility conditions of this algorithm,the transmission rate,secure rate of the legitimate users and the eavesdropping rate of the eavesdropper are analyzed.A specific algorithm of the distributed interference alignment algorithm based on the minimum weighted leakage interference is given in detail.The specific algorithm can reduce the complexity of this system effectively.The simulations show that the proposed scheme can effectively suppress the eavesdropping rate while not affecting the transmission rate of legitimate users.The security performance of the system can be improved obviously.

关 键 词：保密通信 协作通信 IA 网络 AN MIMO 

分 类 号：TN929.5[电子电信—通信与信息系统]