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| Presentation | 2009-06-03 10:40 Symbol Weighting Scheme in OFDM Receiver with Sigma-Delta A/D Converter Ayana Suzuki, Mamiko Inamori, Yukitoshi Sanada (Keio Univ.)  WBS2009-2 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In OFDM receivers, an analog-to-digital converter must convert a signal with large bandwidth and high resolution. A $\Sigma\Delta$ modulator is one of A/D converters that has very high resulution. However, it has lower bandwidth than the other types of A/D converters. Moreover, the oversampling rate of the $\Sigma\Delta$ modulator needs to be decreased for reduction of power consumption. In this paper, performance of an OFDM receiver with the $\Sigma\Delta$ modulator using a symbol weighting scheme is investigated. The symbol weighting scheme is used with a soft-decision Viterbi decoder in the receiver, and the symbol on each subcarrier is weighted by a coefficient derived from the output noise spectrum of the $\Sigma\Delta$ modulator. The numerical results obtained through computer simulation show that the BER performance is improved if a signal is affected with large noise or a signal consists of a large number of subcarriers. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / $\Sigma\Delta$ modulator / convolutional coding / Viterbi decoding / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 71, WBS2009-2, pp. 7-12, June 2009. | |
| Paper # | WBS2009-2 | |
| Date of Issue | 2009-05-27 (WBS) | |
| 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 | WBS2009-2 |
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| Conference Information | |
| Committee | SAT WBS |
| Conference Date | 2009-06-03 - 2009-06-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | KDDI R&D Laboratories |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Coding, Modulation, Digital Proccessing, etc. |
| Paper Information | |
| Registration To | WBS |
| Conference Code | 2009-06-SAT-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Symbol Weighting Scheme in OFDM Receiver with Sigma-Delta A/D Converter |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | $\Sigma\Delta$ modulator |
| Keyword(3) | convolutional coding |
| Keyword(4) | Viterbi decoding |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Ayana Suzuki |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Mamiko Inamori |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
| 3rd Author's Name | Yukitoshi Sanada |
| 3rd Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-06-03 10:40:00 |
| Presentation Time | 25 minutes |
| Registration for | WBS |
| Paper # | WBS2009-2 |
| Volume (vol) | vol.109 |
| Number (no) | no.71 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2009-05-27 (WBS) |
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