earticle

영어

Firstly the Decomposition Least Mean (D‐LMS) algorithm is analyzed deeply in theoretical, then a
variable step size D‐LMS algorithm is proposed. By using the MATLAB based simulation model,
the system identification results of the stable step size D‐LMS algorithm and the ones of the
variable step‐size D‐LMS algorithm are both obtained. The simulation results show that
compared with the stable step size D‐LMS algorithm, this variable step‐size D‐LMS algorithm
based on wavelet transform has the better convergence ability and tracing ability, but the
less state errors.