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| Presentation | 2012-06-22 12:10 Proposal of Faster Method for MU-MIMO Precoding Using Fine-Graded Parallel Processing Kosuke Shimazaki (Hokkaido Univ.), Shingo Yoshizawa (KIT), Yasuyuki Hatakawa, Tomoko Matsumoto, Satoshi Konishi (KDDI), Yoshikazu Miyanaga (Hokkaido Univ.)  RCS2012-65 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes a fast processing method for Tomlinson-Harashima Precoding (THP) circuit used for multi-user MIMO (MU-MIMO) wireless communication systems. The authors separately design the LQ decomposition and interference cancellation parts in THP circuit, since their requirements for the calculation accuracy and the operation speed are not identical. The requirement for the operation speed for LQ decomposition part is low owing to the less-frequently update of the channel state information (CSI), while that for the calculation accuracy is high owing to the continuous use of the result of LQ decomposition until the next update of CSI. Hence the authors adopt ASIP (Application Specific Instruction-set Processor) for LQ decomposition part. On the other hand, the requirement for the operation speed for the interference cancellation part is high owing to the high frequent update of transmission data. Hence authors adopt the precomputation of division and the pipeline architecture, of which the processing time is reduced by 74\%. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MU-MIMO / THP / ASIP / FPU / LQ decomposition / Interference cancellation / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 89, RCS2012-65, pp. 129-134, June 2012. | |
| Paper # | RCS2012-65 | |
| Date of Issue | 2012-06-14 (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 | RCS2012-65 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2012-06-21 - 2012-06-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hakodate City Central Library |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2012-06-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal of Faster Method for MU-MIMO Precoding Using Fine-Graded Parallel Processing |
| Sub Title (in English) | |
| Keyword(1) | MU-MIMO |
| Keyword(2) | THP |
| Keyword(3) | ASIP |
| Keyword(4) | FPU |
| Keyword(5) | LQ decomposition |
| Keyword(6) | Interference cancellation |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kosuke Shimazaki |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Shingo Yoshizawa |
| 2nd Author's Affiliation | Kitami Institute of Technology (KIT) |
| 3rd Author's Name | Yasuyuki Hatakawa |
| 3rd Author's Affiliation | KDDI R&D Laboratories Inc. (KDDI) |
| 4th Author's Name | Tomoko Matsumoto |
| 4th Author's Affiliation | KDDI R&D Laboratories Inc. (KDDI) |
| 5th Author's Name | Satoshi Konishi |
| 5th Author's Affiliation | KDDI R&D Laboratories Inc. (KDDI) |
| 6th Author's Name | Yoshikazu Miyanaga |
| 6th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-06-22 12:10:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2012-65 |
| Volume (vol) | vol.112 |
| Number (no) | no.89 |
| Page | pp.129-134 |
| #Pages | 6 |
| Date of Issue | 2012-06-14 (RCS) |
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