Carrier over Noise ratio

Started by October 8, 2006
Dear All,
I'm implementing a Matlab DVB-T system; in order to test it,
I' like to see if the performance are matching to the ETSI's standard
performances. The problem is the standard ask to set 18 dB for
the Carrier over Noise Ratio (C/N)..but I only know how to set the Signal to Noise ratio (SNR)in my code's parameters.
Can someone please tell me how to convert the C/N to SNR in the OFDM transmission? thanxs a lot!