aalmsonesteppredictor.m

来自「Adaptive Filtering Primer with MATLAB」· M 代码 · 共 18 行

function[w,y,e,J,w1]=aalmsonesteppredictor(x,mu,M)
%function[w,J,w1]=aalmsonesteppredictor(x,mu,M);
%x=data=signal plus noise;mu=step size factor;M=number of filter 
%coefficients;w1 is a matrix and each column is the history of each
%filter coefficient vesus time n;
N=length(x);
y=zeros(1,N);
w=zeros(1,M);
for n=M:N-1
    x1=x(n:-1:n-M+1);
    y(n)=w*x1';
    e(n)=x(n+1)-y(n);
    w=w+2*mu*e(n)*x1;
    w1(n-M+1,:)=w(1,:);
end;
J=e.^2;
%J is the learning curve of the adaptive process;