vfone said:Carrier to Noise Ratio (CNR) is a measure of the received carrier strength relative to the strength of the received noise.
CNR[dB] = 10 log10(Pc/Pn)
Pc - incoming carrier strength in microwatts
Pn - noise level in microwatts
Signal to Noise Ratio (SNR), is a measure of signal strength relative to background noise.
SNR[dB] = 20 log10(Vs/Vn)
Vs - incoming signal strength in microvolts
Vn - noise level in microvolts