| Presentation | 2023-11-15 Beam Selection Based on Angle-Domain Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink Nobuhide Nonaka, Kenichi Higuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we introduce non-orthogonal multiple access (NOMA) into the massive multiple-input multiple-output (MIMO) analog beamforming (BF) in cellular downlink. In analog BF with NOMA system, in order to non-orthogonally multiplex users within a beam, the beam selection method is important which selects the beam with appropriate NOMA user-pairs. In addition, analog BF with NOMA suffers from limited channel state information since the feedback interval of signal-to-noise power ratio (SNR) of candidate beams from users is longer than the scheduling interval. In order to solve the problems, we propose an angle-domain beam grouping (ADG), which generate beam-groups with multiple neighboring analog beams, as a beam selection method. ADG selects the beams with appropriate NOMA user-pairs, since ADG considers the semi-optimal neighboring beams as well as optimal beam of each of respective users. ADG also alleviates the inter-beam interference by selecting the simultaneously used beams from different beam-groups. Moreover, we also propose the method which reuses the signal-to-interference and noise power ratio (SINR) measured for user-scheduling and transmission rate control every beam-update interval into the beam selection. The SINR reuse method further improves the system throughput since the beam selection accuracy in time is improved. Computer simulation results show that proposed methods are especially effective when the beam update interval is long, and system throughput is significantly improved when using NOMA. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Non-orthogonal multiple access / NOMA / SIC / Massive MIMO / Analog beamforming |
| Paper # | RCS2023-152 |
| Date of Issue | 2023-11-08 (RCS) |
| Conference Information | |
| Committee | AP / RCS |
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| Conference Date | 2023/11/15(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto Prefectural Workers' Welfare Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Kunio Sakakibara(Nagoya Inst. of Tech.) / Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | YUAN Qiaowei(Tohoku Inst. of Tech.) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Naoto Ishii(NEC) |
| Secretary | YUAN Qiaowei(Iwate Univ.) / Fumihide Kojima(Mitsubishi Electric) / Osamu Muta(Univ. of Electro-Comm) / Naoto Ishii(Sharp) |
| Assistant | Tomoki Murakami(NTT) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Kiichi Tateishi(NTT Docomo) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Beam Selection Based on Angle-Domain Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink |
| Sub Title (in English) | |
| Keyword(1) | Non-orthogonal multiple access |
| Keyword(2) | NOMA |
| Keyword(3) | SIC |
| Keyword(4) | Massive MIMO |
| Keyword(5) | Analog beamforming |
| 1st Author's Name | Nobuhide Nonaka |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2023-11-15 |
| Paper # | RCS2023-152 |
| Volume (vol) | vol.123 |
| Number (no) | RCS-263 |
| Page | pp.pp.7-12(RCS), |
| #Pages | 6 |
| Date of Issue | 2023-11-08 (RCS) |