接收通道干扰抵消设计与实现  

Design and Implement of Interference Cancellation in Receivers

作　　者：严承涛 韩肃霜 牛吉凌[1] 王春恒 张明民[1] YAN Cheng-tao;HAN Su-shuang;NIU Ji-ling;WANG Chun-heng;ZHANG Ming-min(No.30 Institute of CETC,Chengdu Sichuan 610041,China;Staff Department Command of Northern Theater Navy,Qingdao Shandong 266001,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041 [2]北部战区海军参谋部,山东青岛266001

出　　处：《通信技术》2020年第12期2915-2921,共7页Communications Technology

摘　　要：复杂电磁环境下电子设备的相互干扰,使得大型平台上众多无线设备同时工作时出现无线系统效能降低的情况。因此,对干扰抵消技术背景、技术路线、原理进行全面阐述,经自适应抵消算法仿真设计和原理样机设计,验证了接收通道主动干扰消除能力,干扰抑制比达到40 dB以上,实现接收设备在大信号干扰环境下具有足够的接收信噪比和稳定可靠的解调接收能力,提升了无线通信装备在复杂电磁环境下对时间、频率、空间的满足度,具有广泛的工程应用价值。Aiming at the mutual interference of electronic equipment in the complex EM(electromagnetic)environment,the wireless system performance is reduced when many wireless devices on a large platform work at the same time.The article comprehensively explains the technical background,technical route and principle of the interference cancellation.The adaptive cancellation algorithm simulation design and the principle prototype design verify the active interference cancellation ability of the receiving channel,and the interference suppression ratio reaches more than 40 dB,which realizes that the receiving equipment has sufficient receiving SNR and stable and reliable receiving ability in a large signal intererence environment,thus to improve the satisfaction of wireless communication equipment in time,frequency,and space in a complex EM environment.And all these have extensive engineering application value.

关 键 词：干扰抵消 正交矢量合成 自适应抵消 LMS算法 

分 类 号：TN92[电子电信—通信与信息系统]