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| Presentation | 2009-11-27 10:50 Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica Katsuya Kato, Ryota Yamada, Kazuhiro Abe, Takashi Yoshimoto, Minoru Kubota, Naoki Okamoto (Sharp Corp.)  RCS2009-155 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This report proposes Multipath Division turbo equalization with Block Inter-carrier interference Cancellation to suppress Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) caused in large delay environments. In multipath environments with delay difference greater than Guard Interval (GI) length, OFDM transmissions suffer from severe degradation due to ISI and ICI. ISI is a leak of adjacent OFDM symbols, and loss of orthogonality in the FFT window causes ICI. The proposed method exploits log likelihood ratio which is a fed back from a decoder and generates a transmitted signal replica. Using that replica, a multipath is divided into several blocks in which the maximum delay difference is limited so as not to exceed the GI length. A multipath division process eliminates a portion of desired signal alongside ISI and ICI, and residual error occurs. The proposed method avoids this error by reconstructing the lost desired signal in the frequency domain, and achieves great transmission performance. Computer simulations demonstrate the effectiveness of the proposed method in an environment with large delay spread channel. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / Guard Interval / Inter Symbol Interference / Inter Carrier Interference / Turbo Equalization / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 305, RCS2009-155, pp. 133-138, Nov. 2009. | |
| Paper # | RCS2009-155 | |
| Date of Issue | 2009-11-19 (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 | RCS2009-155 |
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| Conference Information | |
| Committee | RCS AP |
| Conference Date | 2009-11-26 - 2009-11-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Inst. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2009-11-RCS-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Guard Interval |
| Keyword(3) | Inter Symbol Interference |
| Keyword(4) | Inter Carrier Interference |
| Keyword(5) | Turbo Equalization |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Katsuya Kato |
| 1st Author's Affiliation | Sharp Corporation (Sharp Corp.) |
| 2nd Author's Name | Ryota Yamada |
| 2nd Author's Affiliation | Sharp Corporation (Sharp Corp.) |
| 3rd Author's Name | Kazuhiro Abe |
| 3rd Author's Affiliation | Sharp Corporation (Sharp Corp.) |
| 4th Author's Name | Takashi Yoshimoto |
| 4th Author's Affiliation | Sharp Corporation (Sharp Corp.) |
| 5th Author's Name | Minoru Kubota |
| 5th Author's Affiliation | Sharp Corporation (Sharp Corp.) |
| 6th Author's Name | Naoki Okamoto |
| 6th Author's Affiliation | Sharp Corporation (Sharp Corp.) |
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| Speaker | Author-1 |
| Date Time | 2009-11-27 10:50:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2009-155 |
| Volume (vol) | vol.109 |
| Number (no) | no.305 |
| Page | pp.133-138 |
| #Pages | 6 |
| Date of Issue | 2009-11-19 (RCS) |
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