基于Matlab的自适应滤波器设计

滤波器在电子设备中已得到广泛的应用，而自适应滤波器可以不必事先给定信号及噪声的自相关函数，它可以利用前一时刻已获得的滤波器参数自动地调节现时刻的滤波器参数，从而实现最优滤波。介绍了自适应滤波器原理，并对LMS自适应算法进行了分析，最后用Matlab对自适应低通滤波器进行了仿真和实现，并分析了该自适应滤波器的性能。

Adaptive Filter Design Based on Matlab

The filter has already been widely used in electronics equipments, However, it is unnecessary to know the self - related function about signal and the noise in the adaptive filter in advance, for it can adjust the filter parameter at current time by using the past parameter to work at its best performance. The principle of the adaptive filter was introduced, and the LMS adaptive algorithm was analyzed. While conducting the simulation and realization of an adaptive low - pass filter by using MATLAB, the performance of this adaptive filter was analyzed.