摘要
针对于提高干扰机收发隔离度的自适应干扰对消系统 ,利用快速FFT技术实现了一种替代时域LMS算法的频域快速LMS自适应算法 ,分析表明该算法不但具有同时域LMS算法近似的收敛特性 ,而且计算量大幅度减少 ,有利于对消系统的实时实现。
Aimed at the adaptive interference cancellation system for improving the transmitter-receiver isolation of the jammer, a fast LMS adaptive algorithm in frequency domain is realized by using fast FFT technology, the algorithm is a replacement of LMS algorithm in time domain. The analysis indicates that the convergence of the algorithm is approximate with LMS algorithm in time domain, moreover it have less computation, which are propitious to realize cancellation system in real time, the computer simulation confirms the correctness of the analysis and the feasibility of the algorithm.
关键词
自适应干扰对消
FFT
LMS
频域
电子干扰机
收发隔离
adaptive interference cancellation
transmitter-receiver isolation
frequency domain
LMS adaptive algorithm
