ls1.m

这个包中包含学习最小均方滤波的一个例子及其和其它滤波方法的一些比较。

clear,close all;
N=400;
M=2;
period=[0:N-1];
x=sin(2*pi*0.02*period);
period1=[0,0:N-2];
x1=sin(2*pi*0.02*period1);
xs=0.4*x+0.4*x1;
figure;
subplot(2,1,1);
plot(xs);
grid;
title('standard singal');
noise=0.05*randn(1,N);
y=0.4*x+0.4*x1+noise;
subplot(2,1,2);
plot(y);
grid;
title('standard singal with noise ave=0.5 var=0.05');
[R,d]=lsmatvec('full',x',M,y');
cls=R\d;
Y=filter(1,cls,y);
figure;
plot(0:N-1,Y,'.',0:N-1,y,'k');
grid;
title('The predict singal vs the disired response--post');
legend('Predict singal','Desired response');