Maximal-ratio combining

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In telecommunications, maximal-ratio combining is a method of diversity combining in which (a) the signals from each channel are added together, (b) the gain of each channel is made proportional to the rms signal level and inversely proportional to the mean square noise level in that channel, and (c) the same proportionality constant is used for all channels. It is also known as ratio-squared combining, predetection combining and selective combining.

This article contains material from the Federal Standard 1037C (in support of MIL-STD-188), which, as a work of the United States Government, is in the public domain.