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Paper Abstract and Keywords
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
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.
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

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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