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| Presentation | 2020-12-18 13:50 [Invited Lecture] A Study on Higher-Order Large MIMO Detection via Concatenated Beam- and Antenna- Domain Layered BP Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.)  NS2020-102 RCS2020-149 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | large MIMO / belief propagation / digital beamforming / higher-order modulation / dimensionality reduction / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 298, RCS2020-149, pp. 79-84, Dec. 2020. | |
| Paper # | RCS2020-149 | |
| Date of Issue | 2020-12-10 (NS, RCS) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | NS2020-102 RCS2020-149 |
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| Conference Information | |
| Committee | NS RCS |
| Conference Date | 2020-12-17 - 2020-12-18 |
| 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. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2020-12-NS-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | 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 |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 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.) |
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| Speaker | Author-1 |
| Date Time | 2020-12-18 13:50:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | NS2020-102, RCS2020-149 |
| Volume (vol) | vol.120 |
| Number (no) | no.297(NS), no.298(RCS) |
| Page | pp.79-84 |
| #Pages | 6 |
| Date of Issue | 2020-12-10 (NS, RCS) |
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