Normalized Mean Square Error (NMSE) Calculation

[tec5c]

Hi all,

This question is from my communication systems subject at Uni. We have not covered this in lectures (nor previous math/stats classes)...

I'm quite sure that I'm making a mistake in my working (2.5 pages of working  ) as my final answer results in 0 for different values of n.

The question:


Where s(t) is


I'm quite sure the denominator in the exponential, for the NMSE, should be T rather than N, to match with s(t)...??

An expression for the fourier coefficients, Cn, has previously been found, as well as the average power P.

I can provide more of the question + my working if anyone would like to see it (not at home at the moment so will have to post it up later).

As I haven't learnt this in class, I have tried to self educate in order to understand exactly what the question is asking. I am quite confident that I do grasp it, though if anyone can explain it then I'm hoping something may click so I realise where I've gone wrong.