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| Presentation | 2007-01-26 15:35 Multi-and-Single-User Detection Switching Control in MIMO-OFDM Co-Channel Interference Enviroments A. T. Le, Kazuhiko Fukawa, Hiroshi Suzuki (Tokyo Tech)  SIP2006-174 RCS2006-232 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To cope with co-channel interference in an uplink of a MIMO-OFDM mobile radio system, this report investigates control algorithms to switch between multi- and single-user detection using array combining (AC). The combination of AC and single-user maximum likelihood detection (MLD), which is referred to as SU-AC-MLD, suffers from BER degradation when a difference in average angle of arrival (AOA) between desired and interfering signals is small. To solve such a problem, this report proposes a combination of AC and multi-user MLD, which is referred to as MU-AC-MLD. MU-AC-MLD can detect interfering signals which AC is unable to suppress. Under a noisy channel condition, however, MU-AC-MLD is likely to be inferior to SU-AC-MLD in BER performance because the former has more parameters to be estimated. For switching between SU-AC-MLD and MU-AC-MLD, this report also proposes two control algorithms that calculate mean squared errors during preamble symbols as their criterion. Computer simulations under an interference-limited condition demonstrate that the proposed control algorithms can properly select one detector that is superior in BER performance to the other. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MIMO / OFDM / maximum likelihood / multiuser detection / co-channel interference / array combining / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 480, RCS2006-232, pp. 91-96, Jan. 2007. | |
| Paper # | RCS2006-232 | |
| Date of Issue | 2007-01-19 (SIP, 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 | SIP2006-174 RCS2006-232 |
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| Conference Information | |
| Committee | RCS SIP |
| Conference Date | 2007-01-24 - 2007-01-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NICT Okinawa |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2007-01-RCS-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-and-Single-User Detection Switching Control in MIMO-OFDM Co-Channel Interference Enviroments |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | OFDM |
| Keyword(3) | maximum likelihood |
| Keyword(4) | multiuser detection |
| Keyword(5) | co-channel interference |
| Keyword(6) | array combining |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | A. T. Le |
| 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 | Hiroshi Suzuki |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2007-01-26 15:35:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | SIP2006-174, RCS2006-232 |
| Volume (vol) | vol.106 |
| Number (no) | no.477(SIP), no.480(RCS) |
| Page | pp.91-96 |
| #Pages | 6 |
| Date of Issue | 2007-01-19 (SIP, RCS) |
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