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| Presentation | 2011-12-16 13:40 Iterative Decision-Feedback Channel Estimation for Turbo SIC in DFT-Precoded OFDMA Using QO-STBC Lianjun Deng (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Hidekazu Taoka (DOCOMO Europe Labs..), Mamoru Sawahashi (Tokyo City Univ.)  RCS2011-257 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes using iterative decision-feedback channel estimation (IDFCE) in a turbo soft interference canceller (SIC) for a quasi-orthogonal (QO) - space-time block code (STBC) with four antennas in discrete Fourier transform (DFT)-precoded orthogonal frequency division multiple access (OFDMA). In the proposed method, channel estimation (CE) is updated at each turbo SIC iteration loop by using soft-symbol estimation based on the log-likelihood ratio (LLR) of an extrinsic probability at the Max-Log-MAP (maximum a posteriori probability) decoder output. Hence, the accuracy of the generated residual inter-code interference (ICI) due to non-orthogonality in the QO-STBC improves in the turbo SIC, which leads to improvement in the achievable performance. Computer simulation results show that by applying the proposed IDFCE in the turbo SIC, the required average received signal-to-noise power ratio (SNR) at the average block error rate (BLER) of 10-2 is decreased by approximately 1.5 and 1.0 dB compared to those for STBC using reference signal (RS) based CE and DFCE, respectively, for the coding rate of R = 1/3 in turbo code. Hence, the IDFCE works cooperatively in the turbo SIC to decrease the ICI in the full rate QO-STBC. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Mobile communications / Single-Carrier FDMA / Transmit diversity / QO-STBC / Turbo SIC / Channel estimation / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 345, RCS2011-257, pp. 147-152, Dec. 2011. | |
| Paper # | RCS2011-257 | |
| Date of Issue | 2011-12-08 (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 | RCS2011-257 |
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| Conference Information | |
| Committee | NS RCS |
| Conference Date | 2011-12-15 - 2011-12-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yamaguchi University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2011-12-NS-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Iterative Decision-Feedback Channel Estimation for Turbo SIC in DFT-Precoded OFDMA Using QO-STBC |
| Sub Title (in English) | |
| Keyword(1) | Mobile communications |
| Keyword(2) | Single-Carrier FDMA |
| Keyword(3) | Transmit diversity |
| Keyword(4) | QO-STBC |
| Keyword(5) | Turbo SIC |
| Keyword(6) | Channel estimation |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Lianjun Deng |
| 1st Author's Affiliation | Tokyo City University (Tokyo City Univ.) |
| 2nd Author's Name | Teruo Kawamura |
| 2nd Author's Affiliation | NTT DOCOMO (NTT DOCOMO) |
| 3rd Author's Name | Hidekazu Taoka |
| 3rd Author's Affiliation | DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs..) |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Tokyo City University (Tokyo City Univ.) |
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| Speaker | 1 |
| Date Time | 2011-12-16 13:40:00 |
| Presentation Time | 25 |
| Registration for | RCS |
| Paper # | IEICE-RCS2011-257 |
| Volume (vol) | IEICE-111 |
| Number (no) | no.345 |
| Page | pp.147-152 |
| #Pages | IEICE-6 |
| Date of Issue | IEICE-RCS-2011-12-08 |
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