Time diversity decorrelator (TDD); a near-far resistant detector for asynchronous CDMA system

H. M. Alkussayer*, F. C. Zheng, Y. J. Guo, S. K. Barton

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this paper a near-far resistance detector for asynchronous Code-Division Multiple-Access (CDMA) systems operating in Additive White Gaussian Noise (AWGN) channels is presented. The multi-user interference caused by K users transmitting simultaneously, each with a specific signature sequence, is completely removed at the receiver. The complexity of this detector grows only linearly with the number of users, as compared to the optimum multi-user detector which requires exponential complexity in the number of users. A modified algorithm based on time diversity is described. It performs detection on a bit-by-bit basis and overcomes the complexity of using a sequence detector. The performance of this detector is shown to be superior to that of the conventional receiver.

Original languageEnglish
Pages (from-to)564-568
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume1
Publication statusPublished - 1996
Externally publishedYes

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