Analysis and comparison of RLS adaptive filter in signal De-noising

In the field of digital signal processing, only adaptive filter can deal with some random signal, noise or the time-varying signal. The adaptive filter can track the changes of the signal and noise so as to realize optimal filtering. This paper introduces the structure and principle of adaptive filters. Recursive Least Square (RLS) Algorithm, presents the implementation of simulation in the software simulator of a 32-order adaptive filter which is designed in MATLAB environment. The emulational result shows that the 32-order adaptive filter can remove the noise very well.