clear?all
clc???????????????
t=0:1/1000:10-1/1000;
s=sin（2*pi*t）;
snr=10;
s_power=var（s）;??????????????%var函數:?返回方差值
linear_snr=10^（snr/10）;
factor=sqrt（s_power/linear_snr）;
noise=randn（1length（s））*factor;
x=s+noise;???????????????????%由SNR計算隨機噪聲
x1=noise;????????????????????%噪聲源輸入
x2=noise;
w1=0;???????????????????????%權系數初值
w2=0;?
e=zeros（1length（x））;
y=0;
u=0.005;???????????????