Channel noise level
From Wikipedia, the free encyclopedia
|This article needs additional citations for verification. (February 2007) (Learn how and when to remove this template message)|
In telecommunications, the term channel noise level has the following meanings:
- The ratio of the channel noise at any point in a transmission system to an arbitrary level chosen as a reference.
- The noise power spectral density in the frequency range of interest.
- The average noise power in the frequency range of interest.
- The channel noise level may be expressed in (a) dB above reference noise (dBrn), (b) dB above reference noise with C-message weighting (dBrnC), or (c) adjusted dB (dBa).
- Each unit used to measure channel noise level reflects a circuit noise reading of a specialized instrument designed to account for different interference effects that occur under specified conditions.