Suppose we have a stochastic process N that is stationary in the wide sense (WSS), and we're sampling this process every T seconds.
Also suppose that the mean of the process is given to be 0. Now I know that the random variable N(kT) should be zero-mean, but what is its variance?
In the book, there is a relation between the spectrum of N, and the variance of the sample, but I can't seem to track it down!
Any help would be appreciated!