一类新的变步长LMS算法

ACLASS OF VARIABLE STEP SIZE LMS ALGORITHMS

本文提出了选择LMS算法寻优步长的新准则,导出了一类变步长LMS算法,证明了归一化的LMS算法(NLMS)是它的特例.计算机模拟表明其收敛速度较固定步长算法有较大改善。

In this paper a new method of determining the step size of LMS algorithm is presented, and then a class of variable step size LMS algorothms are derived.It is shown by computer simulations that the new algorithms have faster convergence rate than the conventional fixed step size LM Salgorithms.