Introduction - If you have any usage issues, please Google them yourself
function Px=overlay(N,omega,A,sigma,num)
OVERLAY Forms multiple power spectral density estimates.
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USAGE Px=overlay(N,omega,A,sigma,num)
Calculates the periodogram using an ensemble of realizations
of a process consisting of a sum of complex exponential in
white noise.
N : length of the signal
omega : vector containing the sinusoid frequencies
A : vector containing the sinusoid frequencies
sigma : the variance of the white noise
num : size of the ensemble (number of periodograms)