Number of sinusoids Estimator
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Fast Algorithm estimating the number of sinusoids in a white Gaussian noise. This algorithm use a sub-space method based on chi-square statistics of eigen values of the Autocorrelation Matrix.
Example :
clear, close all hidden
N = 512;
L_vrai = 4;
fe = 2000;
F = (0:(fe/2)/(N/2-1):(fe/2));
snr = [-10 -10 -10 -10];
f = [25 230 500 780];
n = 32;
prob = 0.95;
y = zeros(1,N);
t = (0:(N-1))/fe;
for l = 1:L_vrai
y = y + sqrt(2)*10^(snr(l)/20)*sin(2.*pi.*f(l).*t + 2.*pi.*rand);
end
s = y + randn(1 , N);
[L , R] = nbsinu(s , n , prob);
Free download from Shareware Connection - Fast Algorithm estimating the number of sinusoids in a white Gaussian noise
Version: 1.0 | Size: 10 KB | Platform: Matlab, Scripts
Released Date: 17-04-2013 | Rating: 0 | Title: Number of sinusoids Estimator
Author Url: http://www.mathworks.com
Program Info Url: http://www.mathworks.com
Download Url: http://www.mathworks.com/matlabcentral/fx_files/4876/1/nbsinu.zip
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