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| Presentation | 2012-10-19 15:20 On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver Hai Minh Tran, Tomohisa Wada (Univ. of The Ryukyus)  RCS2012-156 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In mobile environment, the performance of OFDM mobile receivers is degraded severely because of Inter-Carrier- Interference (ICI) caused by Doppler Spread. Therefore, ICI canceller is an important task for the OFDM mobile receivers. [1] and [2] proposed an efficient method to reduce ICI. The main idea of this method is to linearly approximate time varying channel within one OFDM symbol. Then a large ICI matrix equation is given. However, in [1], [2], the estimated values of the channel transfer function.the diagonal of the ICI matrix is corrupted by ICI. Consequently, the equalized signal still is distorted. In this paper, we proposed an iterative method to improve performance of the original method. We implemented Jacobi iteration method with low complexity to solve the large ICI matrix equation. Next, at second iteration of Jacobi method, we improve the diagonal by removing ICI power from pilot symbols and re-estimating the channel transfer function. Simulation results for ISDB-T mode 3 demonstrated that our method could double performance of the original method under TU-6 channel and Doppler Spread. The improvement is better for two paths and one path Doppler channel. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / Jacobi Iteration / Inter-Carrier-Iterference / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 239, RCS2012-156, pp. 179-184, Oct. 2012. | |
| Paper # | RCS2012-156 | |
| Date of Issue | 2012-10-10 (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 | RCS2012-156 |
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| Conference Information | |
| Committee | SR AN USN RCS |
| Conference Date | 2012-10-17 - 2012-10-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | wireless distributed network, general topics |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2012-10-SR-AN-USN-RCS |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Jacobi Iteration |
| Keyword(3) | Inter-Carrier-Iterference |
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| 1st Author's Name | Hai Minh Tran |
| 1st Author's Affiliation | University of The Ryukyus (Univ. of The Ryukyus) |
| 2nd Author's Name | Tomohisa Wada |
| 2nd Author's Affiliation | University of The Ryukyus (Univ. of The Ryukyus) |
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| Speaker | Author-1 |
| Date Time | 2012-10-19 15:20:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2012-156 |
| Volume (vol) | vol.112 |
| Number (no) | no.239 |
| Page | pp.179-184 |
| #Pages | 6 |
| Date of Issue | 2012-10-10 (RCS) |
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