Hi everyone

Could anyone hint me on how to find the SNR for a particular modulation

scheme.

Basically i want to plot the BER v/s SNR curve for gmsk modulation

scheme on a particular link.

I have been successful enough to find BER but cant figure out a way to

find the SNR.

Should I use the FFT way…by calculating the Power spectral density in

matlab and then integrating?..

Or RMS value of the signal can be used (after subtracting the noise)?..

Kindly suggest something if anyone can,

thanks already…

Rashi Dixit

Hello

I have built a lower-bit quantization scheme in the rx_bufffer.v using

4-bit samples, storing one byte for each clock sample (for both I and Q)

and then filling up the 16-bit FIFO with another 8 bit value coming from

the next clock sample.

Whan I did some tests and plotted the results everything looked fine,

like frequency and sahpe of the waveform, I could see though some spikes

equal to a value of 1. This is coming from the rounding effect which I

have not removed. When I do remove that then the spikes become more (in

population not in amplitude) and then I had a look and I saw in the list

that there is a DC offset that causes that?

Can anyone advice me how to get rid of these spikes?

Thank you

Rigas