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| Presentation | 2008-12-10 12:50 Asynchronous channels method application to WCDMA systems Etsushi Nameda, Hideaki Terai, Mingfui Kao, Ken Umeno (ChaosWare)  NLP2008-83 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Multiple access interference (MAI) is one of crucial noise components for code devision multiple access (CDMA) systems. In estimating MAI, it is known that the amount of interference decreases when one consider an effect of asychronous access, which is called as asynchronous interference suppression. We proposed a method, called asynchronous channels, that stagger chips with an intension inducing such interference suppresin effect. In this paper, we analyze the effect of asynchronous channels method applied to Wideband-CDMA systems. Though the analysis is restrected on rectangular pulses, the optimum chip delay ratio is predicted as a quarter chip duration for BPSK modulation and three eighth for QPSK modulation. Those analysis matches to the preceding numerical results. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | asynchronous CDMA / MAI / ACL / pulse shaping filter / interference suppression / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 336, NLP2008-83, pp. 69-74, Dec. 2008. | |
| Paper # | NLP2008-83 | |
| Date of Issue | 2008-12-02 (NLP) | |
| 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 | NLP2008-83 |
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| Conference Information | |
| Committee | NLP |
| Conference Date | 2008-12-09 - 2008-12-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NLP |
| Conference Code | 2008-12-NLP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Asynchronous channels method application to WCDMA systems |
| Sub Title (in English) | |
| Keyword(1) | asynchronous CDMA |
| Keyword(2) | MAI |
| Keyword(3) | ACL |
| Keyword(4) | pulse shaping filter |
| Keyword(5) | interference suppression |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Etsushi Nameda |
| 1st Author's Affiliation | ChaosWare Inc. (ChaosWare) |
| 2nd Author's Name | Hideaki Terai |
| 2nd Author's Affiliation | ChaosWare Inc. (ChaosWare) |
| 3rd Author's Name | Mingfui Kao |
| 3rd Author's Affiliation | ChaosWare Inc. (ChaosWare) |
| 4th Author's Name | Ken Umeno |
| 4th Author's Affiliation | ChaosWare Inc. (ChaosWare) |
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| Speaker | Author-1 |
| Date Time | 2008-12-10 12:50:00 |
| Presentation Time | 25 minutes |
| Registration for | NLP |
| Paper # | NLP2008-83 |
| Volume (vol) | vol.108 |
| Number (no) | no.336 |
| Page | pp.69-74 |
| #Pages | 6 |
| Date of Issue | 2008-12-02 (NLP) |
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