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| Presentation | 2015-07-29 13:35 Block Lower Multi-diagonalization for Multiuser MIMO Downlink Hiroshi Nishimoto, Akinori Taira, Akihiro Okazaki, Atsushi Okamura (Mitsubishi Electric Corp.)  RCS2015-101 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | For multiuser-MIMO (MU-MIMO) downlink, the authors propose a novel precoding concept of block lower multi-diagonalization. Extending the conventional block diagonalization method, the proposed precoder for the desired user is computed to incorporate a predetermined number of interfering users. Consequently, the concept enables us to ensure the extra degree of freedom at the transmit array even after null steering in a linear MU-MIMO strategy, and also to reduce computational load at transmit precanceling in a nonlinear MU-MIMO strategy. From an implementational viewpoint, we here examine two approaches: block bi-diagonalization, allowing one interfering user, and block lower tri-diagonalization, allowing up to two interfering users. In the paper, we reveal the significant potential of the proposed concept through the discussion and numerical evaluation using sum-rate capacity. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | multiuser-MIMO / MU-MIMO / inter-user interference / IUI / precoding / block lower multi-diagonalization / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 160, RCS2015-101, pp. 7-12, July 2015. | |
| Paper # | RCS2015-101 | |
| Date of Issue | 2015-07-22 (RCS) | |
| ISSN | Print edition: ISSN 0913-5685 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 | RCS2015-101 |
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| Conference Information | |
| Committee | RCC ASN RCS NS SR |
| Conference Date | 2015-07-29 - 2015-07-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | JA Naganoken Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Distributed Network, M2M: Machine-to-Machine, D2D (Device-to-Device)，etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2015-07-RCC-ASN-RCS-NS-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Block Lower Multi-diagonalization for Multiuser MIMO Downlink |
| Sub Title (in English) | |
| Keyword(1) | multiuser-MIMO |
| Keyword(2) | MU-MIMO |
| Keyword(3) | inter-user interference |
| Keyword(4) | IUI |
| Keyword(5) | precoding |
| Keyword(6) | block lower multi-diagonalization |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hiroshi Nishimoto |
| 1st Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 2nd Author's Name | Akinori Taira |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 3rd Author's Name | Akihiro Okazaki |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 4th Author's Name | Atsushi Okamura |
| 4th Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
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| Speaker | Author-1 |
| Date Time | 2015-07-29 13:35:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2015-101 |
| Volume (vol) | vol.115 |
| Number (no) | no.160 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2015-07-22 (RCS) |
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