wavelet1.m

PSO粒子群寻优算法。 Particle swarm optimization With linkage operator

function wavelet1 = wavelet1()

% 定义输入信号，添加噪声并
% 对输入作小波变换 

x = [0:0.01:1];
v = 5 + sin(pi*x) + 0.3*sign(x-0.3)... % 采用"HeaviSinc信号"
    + 0.8*sign(0.5-x) + 0.1*sign(x-0.2)...
    + 0.2*sign(x-0.1) + 0.1*sign(-x+0.5)...
    + 0.7*sign(-x+0.6) + 0.1*sign(-x+0.7);
ddx = awgn(v,30); %在信号中加入信噪比为30dB的白高斯噪声
%ddx = awgn(v,40);
%plot(x,y);
%plot(x,z);  
%[dda,ddb] = DWT(ddx,'db4');
%plot(ddb);title('test');
%plot(x,ddx);title('signal');
[CA,CD] = dwt(ddx,'db4')  %小波变换
%ddy = idwt2(CA,CH,CV,CD,'haar');
%plot(x,ddy);
%wavelet1 = a;
%gcv(CD,0.02)
%A1 = idwt('CA',[],'db4');
%subplot(1,2,1);plot(A1);
%subplot(1,2,2);plot(CA);title('CA');
%下面是产生signal信号的程序，使用时把%去掉
%save signal;%存储信号
%