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| Presentation | 2013-10-17 09:30 Suboptimal MIMO Signal Detection Employing Multi-Stream Constrained Search -- Principle of Multi-Stream Constrained Search -- Katsuya Kato (Sharp), Kazuhiko Fukawa (Tokyo Inst. of Tech.), Ryota Yamada (Sharp), Hiroshi Suzuki (Tokyo Inst. of Tech.), Naoki Okamoto (Sharp)  RCS2013-142 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The maximum likelihood detection (MLD) is the optimal signal detection for MIMO communications, but its computational complexity is prohibitive when the number of transmit antennas or the modulation order are large. To overcome this problem, the multi-dimensional search (MDS) has been proposed. MDS sets a minimum mean-squared error (MMSE) detection result to the starting point, and searches for signal candidates in dominant directions of the noise enhancement, under the constraint that one transmitted stream should be a constellation point. Although MDS can achieve a good trade-off between bit error rate (BER) and computational complexity, the complexity is still large because it requires the eigenvalue decomposition. In this report, we propose multi-stream constrained search (MSCS) that sets an MMSE detection result to the starting point, and searches for signal candidates, under the constraint that plural transmitted stream should be constellation points. Since MSCS does not require the eigenvalue decomposition, it can achieve less computational complexity than MDS when one stream is constrained. In addition, MSCS can extend the number of constrained streams to plural. Computer simulations demonstrate that MSCS can achieve almost the same average BER performance as MLD while searching for extremely less signal candidates. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MIMO / signal detection / MLD / low-complexity / linear detection / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 246, RCS2013-142, pp. 1-6, Oct. 2013. | |
| Paper # | RCS2013-142 | |
| Date of Issue | 2013-10-10 (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 | RCS2013-142 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2013-10-17 - 2013-10-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Sophia Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2013-10-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Suboptimal MIMO Signal Detection Employing Multi-Stream Constrained Search |
| Sub Title (in English) | Principle of Multi-Stream Constrained Search |
| Keyword(1) | MIMO |
| Keyword(2) | signal detection |
| Keyword(3) | MLD |
| Keyword(4) | low-complexity |
| Keyword(5) | linear detection |
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| 1st Author's Name | Katsuya Kato |
| 1st Author's Affiliation | Sharp Corporation (Sharp) |
| 2nd Author's Name | Kazuhiko Fukawa |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 3rd Author's Name | Ryota Yamada |
| 3rd Author's Affiliation | Sharp Corporation (Sharp) |
| 4th Author's Name | Hiroshi Suzuki |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 5th Author's Name | Naoki Okamoto |
| 5th Author's Affiliation | Sharp Corporation (Sharp) |
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| Speaker | Author-1 |
| Date Time | 2013-10-17 09:30:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2013-142 |
| Volume (vol) | vol.113 |
| Number (no) | no.246 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2013-10-10 (RCS) |
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