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共用天线结合导频的自适应跳频同址干扰抵消

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共用天线结合导频的自适应跳频同址干扰抵消

内容简介:针对空间受限平台跳频(FH)通信系统同址干扰的特点,提出共用天线结合导频的跳频同址干扰抵消(CAP-FH-AIC)算法.只需在自适应定频同址干扰抵消系统的基础上增加导频产生模块和窄带滤波器,通过将多参考输入自适应跳频干扰抵消(M-AIC)转化为单参考输入自适应定频同址干扰抵消(S-AIC)的方式即实现本算法.算法实现简单、性能稳定,使跳频同址干扰抵消可以获得和定频同址干扰抵消一致的性能.

Abstract:A method of frequency hopping (FH) co-site interference cancellation using community antenna and pilot (CAP-FH-AIC) is proposed according to the analysis of the characteristic of the FH co-site interference. The structure of the canceller is transformed from multi-reference adaptive FH co-site interference cancellation (M-AIC) to single-reference adaptive fixed-tuned co-site interference cancellation (S-AIC) only by adding an additional generator of the pilot signal and an additional band-bass filter. It can realize the cancellation of the FH co-site interference and get almost the same performance of the adaptive fixed-tuned co-site interference cancellation. The theoretical inference and simulation confirm that the algorithm can get the advantage of steady performance in FH co-site interference suppression.

作者:袁小刚, 黄国策, 牛红波, 郭兴阳,

关键词:自适应干扰抵消, 同址干扰, 跳频通信, 导频, 共用天线,

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