Study of Variable Step Size LMS Adaptive Algorithm Based on Variable Region

摘要

This paper puts forward a new variable step size LMS adaptive algorithm based on variable region. The step size μ(k) in the algorithm varies with the variation of the region of deviation e(k) to ensure the optimization of the three performance objectives including initial convergent speed, trace ability of the time-varying system and steady disregulation. The paper demonstrates the convergence of the algorithm accompanied by random noise.