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Definition of "fading margin" |
the margin by which the average signal-to-noise ratio (SNR) in a radio communications link is over-designed, in order to compensate for variations in the short-term SNR that occur due to fading of the signal. The signal fading is typically due to multipath propagation, which arises due to the presence of multiple reflectors in the radio link. Utilizing diversity schemes and transmitter power control are typically employed in order to reduce the fading margin required in a radio system. |
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