基于非重叠到达角的分布式大规模MIMO的抗截获传输方法  

Distributed Massive MIMO and Anti-interception Transmission Methods based on Non-overlapping Angle of Arrival

作　　者：黄铃 徐键卉 陈丽花 葛燕妮 HUANG Ling;XU Jianhui;CHEN Lihua;GE Yanni(Army Engineering University of PLA,Nanjing Jiangsu 210000,China)

机构地区：[1]陆军工程大学,江苏南京210000

出　　处：《通信技术》2021年第8期1827-1832,共6页Communications Technology

摘　　要：分布式大规模多输入多输出(Multiple-Input Multiple-Output,MIMO)网络概念的提出解决了传统蜂窝网络中固有的小区模式导致的小区间干扰问题,并且在频谱效率和能量效率上都要优于集中式大规模MIMO和小蜂窝模式,但容易受到窃听。主动窃听对无线通信的物理层安全传输会带来很严重的威胁。对分布式大规模MIMO系统在主动导频攻击下的抗截获传输方法进行了研究,提出了利用用户的位置信息来辅助进行信道估计的方法,在减少信道估计误差的同时,加强了系统在干扰环境下的抗截获传输能力。The concept of distributed massive MIMO(Multiple-Input Multiple-Output) network solves the problem of inter-cell interference caused by the inherent cell mode in traditional cellular network, and is superior to centralized large-scale MIMO and small cell mode in spectrum efficiency and energy efficiency, but it is vulnerable to eavesdropping. Active eavesdropping brings a serious threat to the physical layer security transmission of wireless communications. Therefore, this paper studies the anti-interception and transmission method of distributed large-scale MIMO system under active pilot attack, and proposes a channel estimation method that utilizes the user’s location information to assist. This method not only reduces the error of channel estimation, but also enhances the anti-interception and transmission ability of the system in the interference environment.

关 键 词：主动窃听 信道估计 安全容量 AP选择 非重叠到达角 

分 类 号：TN911.7[电子电信—通信与信息系统]