NDLI: Performance of coded CS-CDMA/CP with iterative detection over multipath fast fading channels and its comparison with W-CDMA

Content Provider	IEEE Xplore Digital Library
Author	Li Yue Weerasinghe, N.S. Chenggao Han Hashimoto, T.
Copyright Year	2009
Description	Author affiliation: Dept. of Electronics Eng., University of Electro-Communications, 1-5-1 Chofugaoka, Chofushi, Tokyo 182-8585, Japan (Li Yue; Weerasinghe, N.S.; Chenggao Han; Hashimoto, T.)
Abstract	This paper studies the impact of fast fading on the performance of coded convolutional spreading CDMA with cyclic prefix (CS-CDMA/CP) combined with iterative detection, which was originally proposed for multiuser interference-free (MUI-free) downlink transmission over a quasi-static multipath fading channel. We show that the CS-CDMA/CP system in conjunction with a single pilot, with zero-correlation-zone code from an M-sequence (M-ZCZ), and with iterative detection works also well for fast fading, and the impacts of Doppler spreads can be made negligible without bandwidth efficiency loss by the employment of excess channel spread configuration and iterative partial multiuser detection. We compare the proposed system and the standard W-CDMA system for downlink transmission by simulation and show that both systems enjoy time-diversity effects of fast fading and that, although the W-CDMA system performs better for a small number of users, the CS-CDMA/CP system performs much better for the number of users from moderate to as large as processing gain.
Starting Page	2390
Ending Page	2394
File Size	282470
Page Count	5
File Format	PDF
ISBN	9781424451227
e-ISBN	9781424451234
DOI	10.1109/PIMRC.2009.5450243
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Multiaccess communication Bandwidth Multiuser detection Convolutional codes Channel estimation Downlink Delay Interference Employment
Content Type	Text
Resource Type	Article

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