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| Paper Abstract and Keywords | ||
| Presentation | 2010-06-18 13:00 Investigation on Channel-Dependent Adaptive Spreading Code Selection in Downlink MC-CDMA Shota Yoshimura, Kenichi Higuchi (Tokyo Univ. of Science)  RCS2010-39 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper investigates a channel-dependent adaptive spreading code matrix selection in downlink multicarrier code division multiple access (MC-CDMA). The proposed method is compared with the conventional MC-CDMA and orthogonal frequency division multiple access (OFDMA). Firstly we show that the signal-to-noise and interference power ratio (SINR) after the minimum mean squared error (MMSE)-based equalization is represented as a weighted average of the instantaneous SNR of respective subcarriers to which the spread symbols are mapped, where the weighting factor is determined by the respective chip power of the spreading sequence. From this, we propose a channel-dependent adaptive spreading code matrix selection in which the minimum SINR among code multiplexed users are maximized. The simulation results elucidate that the proposed adaptive spreading code matrix selection can increase the minimum SINR at the outage probability of 10-3 by approximately 1 dB compared to the conventional MC-CDMA and OFDMA with adaptive frequency allocation based on the channel conditions of respective users. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MC-CDMA / Spreading code / Adaptive code selection / MMSE filtering / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 77, RCS2010-39, pp. 127-132, June 2010. | |
| Paper # | RCS2010-39 | |
| Date of Issue | 2010-06-10 (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 | RCS2010-39 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2010-06-17 - 2010-06-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2010-06-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation on Channel-Dependent Adaptive Spreading Code Selection in Downlink MC-CDMA |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | Spreading code |
| Keyword(3) | Adaptive code selection |
| Keyword(4) | MMSE filtering |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shota Yoshimura |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
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| Speaker | Author-1 |
| Date Time | 2010-06-18 13:00:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2010-39 |
| Volume (vol) | vol.110 |
| Number (no) | no.77 |
| Page | pp.127-132 |
| #Pages | 6 |
| Date of Issue | 2010-06-10 (RCS) |
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