Channel noise level - AbsoluteAstronomy.com

Telecommunication

Telecommunication is the transmission of information over significant distances to communicate. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded...

s, the term channel noise level has the following meanings:

The ratio of the channel
Channel (communications)
In telecommunications and computer networking, a communication channel, or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel...

noise at any point in a transmission system
Transmission system
In telecommunications a transmission system is a system that transmits a signal from one place to another. The signal can be an electrical, optical or radio signal....

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.

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