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학술대회 Hybrid Beamforming for Multi-User Transmission in Millimeter Wave Communications
Cited 7 time in scopus Download 3 time Share share facebook twitter linkedin kakaostory
김민현, 이정훈, 이준환
International Conference on Information and Communication Technology Convergence (ICTC) 2017, pp.1261-1263
In this paper, we propose hybrid beamforming scheme for multi-user transmission in millimeter wave (mmWave) communications. The sum rate maximization problem considering limited feedback is formulated and solved by the joint scheduling and hybrid beamforming algorithm with two-stage channel state information (CSI) feedback framework. In the proposed scheme, the base station (BS) first narrows down the possible radio frequency (RF) beamforming vectors based on channel quality feedback and schedules the users associated with the RF beamformer and baseband precoder maximizing the sum rate based on signal-to-interference-plus-noise ratio (SINR) feedback. The simulation result demonstrates the advantage of the proposed scheme over the zero-forcing (ZF) based hybrid beamforming scheme and the RF only beamforming scheme.
KSP 제안 키워드
Beamforming scheme, Channel State Information(CSI), Maximizing the Sum Rate, Millimeter wave communications, RF Beamformer, Sum-rate maximization, Two-Stage, Zero forcing(ZF), base station(BS), channel quality, feedback framework