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資源簡介

最經典基本的自適應濾波算法,屬于無監督學習的忙適應算法,可以實現不需要訓練序列對AR模型進行濾波預測估計,同時也可以稍加修改用于通信中的四星座分類。自己用matlab編寫完成,這也是清華大學現代信號分析的課程大作業

資源截圖

代碼片段和文件信息

%?%?clear?all
%?%?M=4;???
%?%?n=5000;???
%?%?m=3000;
%?%?h1=[0.3?0.9?0.3];
%?%?L=11;
%?%?u1=0.01;
%?%?u2=0.005;
%?%?u3=0.001;
%?%?mse_av1=zeros(1n-L+1);
%?%?mse_av2=zeros(1n-L+1);
%?%?mse_av3=mse_av2;
%?%?snr=20;?
%?%?for?j=1:m
%?%???????s=rand(1nM);?????
%?%???????m1=sum(abs(s1).^4);
%?%???????m2=sum(abs(s1).^2);??????
%?%???????R2=m1/m2;
%?%???????s2=filter(h11s1);?
%?%???????x=awgn(s2snr‘measured‘);
%?%???????w1=[0?0?0?0?0?0?0?0?0?0?0];
%?%?????for?i=1:n-L+1????????
%?%?????????y=x(i+L-1:-1:i);
%?%?????????z1(i)=w1*y‘;?
%?%?????????e1=R2-(abs(z1(i))^2);?
%?%?????????w1=w1+u1*e1*y*z1(i);?
%?%?????????mse1(i)=e1^2;?
%?%?????end;
%?%???mse_av1=mse_av1+mse1;?
%?%?end;
%?%?mse_av1=mse_av1/m;
%?%?plot([1:n-L+1]mse_av1‘r‘[1:n-L+1]mse_av2‘y‘[1:n-L+1]mse_av3‘g‘);
%?%?legend(‘u1=0.01‘‘u2=0.005‘‘u3=0.001‘)
%?%?title(‘CMA‘);
%?%?xlabel(‘迭代次數‘‘fontsize‘14)
%?%?ylabel(‘MSE‘‘fontsize‘14)
%?%?hold?on??
%?%?scatterplot(s110‘k*‘)
%?%?hold?on
%?%?scatterplot(x10‘k*‘)
%?%?hold?on
%?%?scatterplot(z110‘k*‘)
%?%?hold?on
%?%?scatterplot(z210‘k*‘)
%?%?hold?on?
%?%?scatterplot(z310‘k*‘)

clc
clear
close?all
M=20;
L=500;
chan=[0.3?0.9?0.3];
sigma=0.1;
sigconst=[-11];
K=11;
k?=?7;
[XS]=Generator(Lchansigma);
e=zeros(size(S));
Y=zeros(size(S));
step_size=1;
%%
%CMA
M=1;
L=200000;
chan=[0.3?0.9?0.3];
sigma=0.1;
si

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