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This paper analyzes the performance of limited feedback (LFB) beamforming in multiple-input multiple-output (MIMO) distributed antenna systems (DAS). The averaged effective signal-to-noise ratio (ESNR) is derived for both the case where all antenna ports are used for transmission (blanket transmission, BT) and the case where only one of the ports are selected (port selection, PS). Based on the derived...
Appropriate scheduling and link adaptation are key techniques to realize the significant throughput gain for systems which exploit multiple-input multiple-output (MIMO) in conjunction with orthogonal frequency division multiplexing (OFDM). In many cases, however, achieving this gain requires feedback of the channel quality indication (CQI) information to the transmitter, which may lead to high overhead...
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