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Paper Abstract and Keywords
Presentation 2008-05-30 11:00
A Study of Frequency-domain Joint Equalization/Despreading for Multi-code DS-CDMA Using Cyclic Delay Transmit Diversity And Receive Antenna Diversity
Tetsuya Yamamoto, Kazuki Takeda, Fumiyuki Adachi (Tohoku Univ.) RCS2008-8
Abstract (in Japanese) (See Japanese page) 
(in English) Cyclic delay transmit diversity (CDTD) using frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion is a powerful technique to improve the bit error rate (BER) performance of direct sequence code division multiple access (DS-CDMA) signal transmission in a frequency-selective fading channel. However, despreading is done after transforming the frequency-domain signal which applied MMSE-FDE into a time-domain signal and the presence of the residual inter-chip interference (ICI) limits the improvement of the BER performance of DS-CDMA with CDTD. Recently, we proposed a new frequency-domain joint equalization and despreading suitable for CDTD, which can simultaneously perform equalization and despreading in the frequency-domain, assuming single-code DS-CDMA signal transmission. In this paper, we study frequency-domain joint equalization and despreading for multi-code DS-CDMA using CDTD and receive antenna diversity. The conditional BER analysis is presented. The theoretical average BER performance in a frequency-selective Rayleigh fading is evaluated by Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation of the signal transmission.
Keyword (in Japanese) (See Japanese page) 
(in English) DS-CDMA / cyclic delay transmit diversity (CDTD) / frequency-domain equalization (FDE) / / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 61, RCS2008-8, pp. 43-48, May 2008.
Paper # RCS2008-8 
Date of Issue 2008-05-22 (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 RCS2008-8

Conference Information
Committee IN RCS  
Conference Date 2008-05-29 - 2008-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Network, Adhoc Network, PAN, Sensor Network, RFID, etc. 
Paper Information
Registration To RCS 
Conference Code 2008-05-IN-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Frequency-domain Joint Equalization/Despreading for Multi-code DS-CDMA Using Cyclic Delay Transmit Diversity And Receive Antenna Diversity 
Sub Title (in English)  
Keyword(1) DS-CDMA  
Keyword(2) cyclic delay transmit diversity (CDTD)  
Keyword(3) frequency-domain equalization (FDE)  
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1st Author's Name Tetsuya Yamamoto  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Kazuki Takeda  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Fumiyuki Adachi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2008-05-30 11:00:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2008-8 
Volume (vol) vol.108 
Number (no) no.61 
Page pp.43-48 
#Pages 6 
Date of Issue 2008-05-22 (RCS) 

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