In telecommunication, a maximal-ratio combiner is a diversity combiner[?] 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. Synonymsratio-squared combiner, post-detection combiner, predetection[?] combining, selective combiner.
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