I got this question:
X[n] and Y[n] are two DT independent DT processes, and Z[n] = X[n] x Y[n]. If X[n] and Y[n] are JWSS, is Z[n] WSS?
Here's what I'm doing
Now, this is what I know:
and is a function of .
Now, I'm stuck because I can't "expand" the probability . So I ask this:
If we have a process X[n], , is ?
Note: If the expressions are written correctly please point that out.
Any reply is appreciated!