상세정보
학술지
SINR Maximization Beam Selection for mmWave Beamspace MIMO Systems
- 발행일
- 202010
- 출처
- IEEE Access, v.8, pp.185688-185697
- ISSN
- 2169-3536
- 출판사
- IEEE
- 협약과제
- 20HH2800, 5G NR 기반 지능형 오픈 스몰셀 기술 개발, 나지현
- 초록
- Beamspace multiple-input multiple-output (MIMO) systems employ beam selection algorithms based on the sparsity of the beamspace channel to reduce the number of radio-frequency chains required in multi-user systems. In this article, we address the problem of selecting multiple beams to each user. Specifically, we propose a beam selection scheme subject to signal to interference plus noise ratio (SINR) maximization. The proposed beamspace beam selection algorithm is developed in two stages. In the first stage, each user is assigned a non-overlapping beam determined by Kuhn-Munkres assignment algorithm. In the second stage, the selected beams in the previous stage are augmented with additional beams from an M-dominant beam set subject to a sum-rate maximization criterion. The performance of the proposed scheme is verified by simulations, and the results show a near-optimal performance in terms of the achievable sumrate. Also, a significant improvement in terms of energy efficiency is achieved compared to the conventional beam selection scheme.
- KSP 제안 키워드
- Energy Efficiency, First stage, Kuhn-Munkres, Multiuser system, Radio Frequency(RF), SINR maximization, Sum-rate maximization, beam selection, beamspace MIMO, multiple beams, multiple-input-multiple-output (MIMO) systems
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