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carrier to noise ratio (CNR)

Carrier to Noise (CNR) is the ratio of a high-frequency carrier frequency to an interference signal

, which is expressed in the reception quality. If the CNR value is low, interference noise becomes noticeable in the form of hiss

. Thecarrier-to-noise ratio is measured in decibels

(dB) and must be above a specified threshold on the receiving side. In RF receiving equipment, the carrier-to-noise value is the noise ratio present in the IF amplifier before it amplifies the carrier signal with its nonlinear processes such as amplitude limiting and detection.

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Englisch: carrier to noise ratio - CNR
Updated at: 11.09.2009
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