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In telecommunications, the carrier-to-noise ratio, often written CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR of an analogue base band message signal after demodulation, for example an audio frequency analogue message signal. If this distinction is not necessary, the term SNR is often used instead of CNR, with the same definition.
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carrier to noise ratio (CNR)
In radio receivers, the ratio of the level of the carrier to that of the noise in the intermediate frequency (IF) band before any nonlinear process, such as amplitude limitation and detection, takes place. (188 ) Note: The CNR is usually expressed in dB.
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Carrier-To-Noise Ratio (CNR)
The ratio of the video carrier signal level to the Root Mean Square (RMS) noise level, expressed in dB.5
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