中文说明：
本程序对两种固定步长和一种变步长最小均方误差算法的权值收敛进行了仿真，结果表明变步长的算法效果更优。
English Description：
This program simulates the weight convergence of two kinds of fixed step size and one kind of variable step size least mean square error algorithm, and the results show that the effect of variable step size algorithm is better.