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Beamforming Based CSI Reference Signal Transmission for FDD Massive MIMO Systems
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 Title & Authors
Beamforming Based CSI Reference Signal Transmission for FDD Massive MIMO Systems
Hong, Jun-Ki; Jo, Han-Shin; Mun, Cheol; Yook, Jong-Gwan;
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Since FDD massive MIMO (multiple-input multiple-output) system deploys hundreds of transmit antennas at base station (BS) compared to conventional MIMO system, the overhead of transmitting channel state information reference signal (CSI-RS) increases proportionally to the number of transmit-antennas. To overcome these disadvantages, we proposed beamforming based CSI-RS transmission technique for FDD massive MIMO system which transmit CSI-RS by limited amount of downlink resources.
FDD;massive MIMO;CSI-RS;Resource grid;Reuse factor;Beamforming;
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