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| Presentation | 2011-08-26 14:15 MIMO Signal Detection Using Multi-Dimensional Search and Quantization by Lattice Reduction Kengo Kobayashi, Kazuhiko Fukawa, Liming Zheng, Hiroshi Suzuki, Satoshi Suyama (Tokyo Tech)  RCS2011-131 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | For multiple-input multiple-output (MIMO) communications, the optimal signal detection is the maximum likelihood detection (MLD). Unfortunately, the computational complexity of MLD is prohibitive when the modulation order and the number of transmit antennas are large. Thus, suboptimal signal detection algorithms that aim to reduce the complexity while keeping almost the same bit error rate (BER) as MLD have been studied. As such a suboptimal signal detection algorithm, multi-dimensional search (MDS) sets a minimum mean-square error (MMSE) detection result to a starting point, and searches for signal candidates in multi-dimensions of the noise enhancement from which the MMSE detection suffers. However, the BER of MDS degrades seriously under a highly spatially correlated MIMO channel condition. To alleviate such degradation, this report proposes a new algorithm that introduces quantization by lattice reduction (LR) into MDS. Computer simulations demonstrate that the proposed method can maintain excellent BER performance even over a highly spatially correlated MIMO channel. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MIMO / signal detection / lattice reduction / MMSE / noise enhancement / multi-dimensional search / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 180, RCS2011-131, pp. 111-116, Aug. 2011. | |
| Paper # | RCS2011-131 | |
| Date of Issue | 2011-08-18 (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 | RCS2011-131 |
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| Conference Information | |
| Committee | RCS SAT |
| Conference Date | 2011-08-25 - 2011-08-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Niigata Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Special session on coding techniques, Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2011-08-RCS-SAT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | MIMO Signal Detection Using Multi-Dimensional Search and Quantization by Lattice Reduction |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | signal detection |
| Keyword(3) | lattice reduction |
| Keyword(4) | MMSE |
| Keyword(5) | noise enhancement |
| Keyword(6) | multi-dimensional search |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kengo Kobayashi |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Kazuhiko Fukawa |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Liming Zheng |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 4th Author's Name | Hiroshi Suzuki |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 5th Author's Name | Satoshi Suyama |
| 5th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2011-08-26 14:15:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2011-131 |
| Volume (vol) | vol.111 |
| Number (no) | no.180 |
| Page | pp.111-116 |
| #Pages | 6 |
| Date of Issue | 2011-08-18 (RCS) |
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