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| Presentation | 2009-03-02 12:50 Density Evolution Analysis of the Iterative Partial Multiuser Detector for CS-CDMA/CP Li Yue, Nalin S. Weerasinghe, Chenggao Han, Takeshi Hashimoto (Univ. of Electro-Comm.)  CAS2008-108 SIP2008-171 CS2008-82 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | For the purpose of allowing a more bandwidth efficient CS-CDMA/CP system for more active users, an iterative partial multiuser detector (IPMUD) has been proposed for the case where the condition of multiuser interference-free (MUI-free) transmission is no longer satisfied. The IPMUD jointly detects data from the desired user and interfering users with varying degrees of accuracy and it has been shown that its performance depends on the detection quality for the interfering users. In this paper, we clarify the influence of the detetion quality for the interfering users on the detection for the desired user by using the density evolution analysis approach. From the analysis, we see that the detection accuracy of data of the interfering users is essential for the detetion of the desired user. Therefore, some modifications to the IPMUD, $\it{e.g.}$ widened detection window or giving up iterative detection of some rather badly-detected interfering users, can be considered to offer better tradeoff between the system performance and detector complexity. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Convolutional spreading CDMA / multiuser interference / iterative partial multiuser detection / density evolution analysis / multipath channel / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 455, CS2008-82, pp. 43-48, March 2009. | |
| Paper # | CS2008-82 | |
| Date of Issue | 2009-02-23 (CAS, SIP, CS) | |
| 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 | CAS2008-108 SIP2008-171 CS2008-82 |
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| Conference Information | |
| Committee | CAS CS SIP |
| Conference Date | 2009-03-02 - 2009-03-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagaragawa Convention Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Network processors, signal processing for communications, wireless LAN/PAN, etc. |
| Paper Information | |
| Registration To | CS |
| Conference Code | 2009-03-CAS-CS-SIP |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Density Evolution Analysis of the Iterative Partial Multiuser Detector for CS-CDMA/CP |
| Sub Title (in English) | |
| Keyword(1) | Convolutional spreading CDMA |
| Keyword(2) | multiuser interference |
| Keyword(3) | iterative partial multiuser detection |
| Keyword(4) | density evolution analysis |
| Keyword(5) | multipath channel |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Li Yue |
| 1st Author's Affiliation | The University of Electro-Communications (Univ. of Electro-Comm.) |
| 2nd Author's Name | Nalin S. Weerasinghe |
| 2nd Author's Affiliation | The University of Electro-Communications (Univ. of Electro-Comm.) |
| 3rd Author's Name | Chenggao Han |
| 3rd Author's Affiliation | The University of Electro-Communications (Univ. of Electro-Comm.) |
| 4th Author's Name | Takeshi Hashimoto |
| 4th Author's Affiliation | The University of Electro-Communications (Univ. of Electro-Comm.) |
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| Speaker | Author-1 |
| Date Time | 2009-03-02 12:50:00 |
| Presentation Time | 20 minutes |
| Registration for | CS |
| Paper # | CAS2008-108, SIP2008-171, CS2008-82 |
| Volume (vol) | vol.108 |
| Number (no) | no.453(CAS), no.454(SIP), no.455(CS) |
| Page | pp.43-48 |
| #Pages | 6 |
| Date of Issue | 2009-02-23 (CAS, SIP, CS) |
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