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| Presentation | 2008-03-07 18:00 Performance of Turbo Signal Detection with Channel Estimation for Interleave-Division Multiple Access in Mobile Communication Environments Li Zhang, Satoshi Suyama, Hiroshi Suzuki, Kazuhiko Fukawa (Tokyo Inst. of Tech.)  RCS2007-246 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This report applies turbo signal detection with a new channel estimation method to interleave-division multiple access (IDMA) which is expected to improve frequency efficiency of mobile communications, and analyses receiver performance of the turbo signal detection. As IDMA, we focus on MC-IDMA that employs OFDM for frequency efficiency and that is known as OFDM-IDMA. On the transmitter side, a combination of the convolutional and repetition codes yields a low-rate channel code. On the receiver side, the turbo signal detection is employed and soft decision directed channel estimation (SDCE) is applied to the channel estimation in the iterative process. In the initial process, since log likelihood ratios (LLR) of coded bits are not available, the receiver uses only pilot symbols to perform the channel estimation by the RLS algorithm. Using the estimated channel impulse response, it performs soft decision signal detection during data symbols and MAP-based channel decoding. In the iterative process, after replica signals for the received signals are obtained from LLRs which the MAP decoder provides, the LMS algorithm estimates the channel impulse response so that it can minimize the mean squared difference between the received and replica signals. Computer simulations demonstrate that MC-IDMA employing the proposed channel estimation method outperforms Time-Spread MC-CDMA and Frequency-Spread MC-CDMA, although it achieves almost the same bit error rate performance as Chip-Interleaved MC-CDMA. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Mobile communication / multiple access / interleave / IDMA / MC-IDMA / OFDM / MC-CDMA / turbo signal detection | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 518, RCS2007-246, pp. 359-364, March 2008. | |
| Paper # | RCS2007-246 | |
| Date of Issue | 2008-02-27 (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 | RCS2007-246 |
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| Conference Information | |
| Committee | RCS AN MoNA SR WBS |
| Conference Date | 2008-03-05 - 2008-03-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2008-03-RCS-AN-MoMuC-SR-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance of Turbo Signal Detection with Channel Estimation for Interleave-Division Multiple Access in Mobile Communication Environments |
| Sub Title (in English) | |
| Keyword(1) | Mobile communication |
| Keyword(2) | multiple access |
| Keyword(3) | interleave |
| Keyword(4) | IDMA |
| Keyword(5) | MC-IDMA |
| Keyword(6) | OFDM |
| Keyword(7) | MC-CDMA |
| Keyword(8) | turbo signal detection |
| 1st Author's Name | Li Zhang |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 2nd Author's Name | Satoshi Suyama |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 3rd Author's Name | Hiroshi Suzuki |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
| 4th Author's Name | Kazuhiko Fukawa |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Inst. of Tech.) |
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| Speaker | Author-1 |
| Date Time | 2008-03-07 18:00:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2007-246 |
| Volume (vol) | vol.107 |
| Number (no) | no.518 |
| Page | pp.359-364 |
| #Pages | 6 |
| Date of Issue | 2008-02-27 (RCS) |
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