Efficient BER evaluation of linear multiuser detectors with imperfect channel estimation for CDMA fading channels

TitleEfficient BER evaluation of linear multiuser detectors with imperfect channel estimation for CDMA fading channels
Publication TypeJournal Article
Year of Publication2006
AuthorsMa, Y., R. Schober, S. Pasupathy, and T. J. Lim
JournalCommunications, IEEE Transactions on
Volume54
Pagination242 - 250
Date Publishedfeb.
ISSN0090-6778
KeywordsBER evaluation, bit error rate, CDMA fading channels, channel estimation, channel state information, code division multiple access, data-aided channel estimation, diversity reception, doubly selective Rician-fading channels, error statistics, imperfect channel estimation, linear coherent multiuser receivers, linear multiuser detectors, Markov chain, Markov processes, multiuser detection, Rician channels, steady-state analysis
Abstract

In this paper, we present a unified mathematical framework to analyze the bit-error rate (BER) performance of general linear coherent multiuser receivers with diversity reception and imperfect channel estimation for doubly selective Rician-fading asynchronous code-division multiple-access channels. BERs of linear receivers with channel state information and data-aided channel estimation are analyzed, and both exact and low-complexity approximate BER evaluation formulas are presented. Furthermore, by using a Markov chain steady-state analysis, a tight BER approximation for receivers with decision-directed channel estimation is proposed. Numerical and simulation results verify the accuracy of the proposed BER evaluation methods.

URLhttp://dx.doi.org/10.1109/TCOMM.2005.863775
DOI10.1109/TCOMM.2005.863775

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