<P> High C / N ratios provide good quality of reception, for example low bit error rate (BER) of a digital message signal, or high SNR of an analog message signal . </P> <P> The carrier - to - noise ratio is defined as the ratio of the received modulated carrier signal power C to the received noise power N after the receiver filters: </P> <Dl> <Dd> C N R = C N (\ displaystyle \ mathrm (CNR) = (\ frac (C) (N))). </Dd> </Dl> <Dd> C N R = C N (\ displaystyle \ mathrm (CNR) = (\ frac (C) (N))). </Dd>

What is the difference between snr and cnr