| Presentation | 2020-12-18 [Invited Lecture] A Study on Higher-Order Large MIMO Detection via Concatenated Beam- and Antenna- Domain Layered BP Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In large multi-user multi-input multi-output systems, the computational cost and circuit scale on the base station (BS) side are effectively reduced using two-stage signal processing consisting of a slow varying outer beamformer (OBF) based on long-term channel statistics and group-specific multi-user detection for instantaneous channel variations. However, the dimensionality reduction of the group-specific beam-domain channel based on the OBF causes significant performance degradation in the subsequent spatial-filtering detection. To compensate for this drawback, this paper introduces a novel layered belief propagation (BP) detector with a concatenated structure of beam- and antenna-domain BP layers for the post-stage processing of the OBF. The proposed detector is designed for improving the convergence of iterative detection by suppressing intra- and inter-group interference in stages. The layered structure provides the advantages of both beam and antenna domains while maintaining low signal-processing complexity. Numerical results show the validity of our proposed method in terms of the bit error rate performance in both the coded and uncoded cases and the computational complexity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | large MIMO / belief propagation / digital beamforming / higher-order modulation / dimensionality reduction |
| Paper # | NS2020-102,RCS2020-149 |
| Date of Issue | 2020-12-10 (NS, RCS) |
| Conference Information | |
| Committee | NS / RCS |
|---|---|
| Conference Date | 2020/12/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. |
| Chair | Akihiro Nakao(Univ. of Tokyo) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Tetsuya Oishi(NTT) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Tetsuya Oishi(NTT) / Fumiaki Maehara(Chuo Univ.) / Toshihiko Nishimura(Kyushu Univ.) / Tomoya Tandai(NEC) |
| Assistant | Shinya Kawano(NTT) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Radio Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Lecture] A Study on Higher-Order Large MIMO Detection via Concatenated Beam- and Antenna- Domain Layered BP |
| Sub Title (in English) | |
| Keyword(1) | large MIMO |
| Keyword(2) | belief propagation |
| Keyword(3) | digital beamforming |
| Keyword(4) | higher-order modulation |
| Keyword(5) | dimensionality reduction |
| 1st Author's Name | Takumi Takahashi |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Shinsuke Ibi |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Seiichi Sampei |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2020-12-18 |
| Paper # | NS2020-102,RCS2020-149 |
| Volume (vol) | vol.120 |
| Number (no) | NS-297,RCS-298 |
| Page | pp.pp.79-84(NS), pp.79-84(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-12-10 (NS, RCS) |