Optimal selective feedback policies for opportunistic beamforming under peak feedback constraints

Abstract

Opportunistic beamforming (OBF) is a well-known communication technique that utilizes partial channel state information (CSI) to obtain multiuser diversity gains in the downlink. We focus on the structure of the optimal homogenous threshold feedback policy that maximizes the ergodic downlink sum-rate for OBF under a peak feedback load constraint, which we… (More)
DOI: 10.1109/ISIT.2012.6284060

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