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학술대회 Sum Spectral Efficiency Maximization in Cell-Free Millimeter-Wave Massive MIMO Systems
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저자
김민현, 홍승은, 나지현
발행일
202110
출처
International Conference on Information and Communication Technology Convergence (ICTC) 2021, pp.1600-1602
DOI
https://dx.doi.org/10.1109/ICTC52510.2021.9620959
협약과제
21HH1100, [통합과제] 5G NR 기반 지능형 오픈 스몰셀 기술 개발, 나지현
초록
We consider the hybrid beamforming design for cell-free millimeter-wave massive multiple-input multiple-output (MIMO) systems. Sum spectral efficiency maximization problem is formulated and solved by the two-step approach that first determines the analog beamformers maximizing sum of beamforming gains, and then obtains the digital precoders by using the generalized power iteration based algorithm. System-level simulation results demonstrate that the proposed method outperforms the conventional methods including maximum ratio transmission (MRT) and zero-forcing (ZF) precodings.
KSP 제안 키워드
Conventional methods, Efficiency maximization, Massive MIMO system, Massive multiple-input multiple-output (MIMO) systems, Maximum Ratio Transmission, Power iteration, Spectral efficiency(SE), Zero forcing(ZF), beamforming design, cell-free, hybrid beamforming