Hi everybody,

I have a doubt that can be very obvious for you but it has driven m
crazy. I want to know the performance of my demodulator by calculating th
BER curve respect to the EbN0. For that, I input some signals at differen
EbN0 but how should I calculate the EbN0? My method for a complex signal
as I read several times, is:

Eb = S/R; where S is the signal power and R is the data rate
N0 = N/Fs where N is the variance^2 and Fs is the sampling frequency.

However, I've also seen that N0 = N/B where B is the bandwidth of th
channel. Comparing my BER curve with the theoretical one, it is quite fa
and I would like to be sure that my EbN0 calculation is 100% right and the
check the demodulator.

Could somebody please clear this point?
Thank you very much

Regards
mary