Analysis of iterative multiuser receiver for DS-CDMA in Rayleigh fading environment

Chien Hwa Hwang, Chang-Su Kim, C. C Jay Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The performance of a parallel interference cancellation (PIC) multiuser receiver for the direct sequence-code division multiple access (DS-CDMA) system over the frequency-selective and slowly Rayleigh fading uplink channel is analyzed in this research. Our analysis framework assumes random signature sequences, asynchronous transmission, coherent detection, perfect estimation of channel parameters including time delays, carrier phases and fading coefficients. To yield a good demodulation performance in a multipath environment at the receiver, the maximal ratio combining (MRC) is concatenated with PIC. By using the recursive relation between the receiver outputs for consecutive iterations, we obtain the decision statistic for every user at each iteration. The decision statistic is used to derive the asymptotic limit on the bit error rate (BER) of the multiuser receiver as the number of iterations approaches infinity. The asymptotic limit demonstrates the maximal performance improvement that can be achieved by the multiuser receiver, which can be interpreted as the lower bound for BER performance of a PIC receiver in the Rayleigh fading channel.

Original languageEnglish
Title of host publicationProceedings - 2001 International Conference on Third Generation Wireless and Beyond
Pages746-751
Number of pages6
Publication statusPublished - 2001 Dec 1
Externally publishedYes
EventProceedings - 2001 International Conference on Third Generation Wireless and Beyond - San Francisco, CA, United States
Duration: 2001 Jun 302001 Jul 2

Other

OtherProceedings - 2001 International Conference on Third Generation Wireless and Beyond
CountryUnited States
CitySan Francisco, CA
Period01/6/3001/7/2

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Hwang, C. H., Kim, C-S., & Kuo, C. C. J. (2001). Analysis of iterative multiuser receiver for DS-CDMA in Rayleigh fading environment. In Proceedings - 2001 International Conference on Third Generation Wireless and Beyond (pp. 746-751)