İterative receiver for DS-CDMA systems in the presence of time-varying channels

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2008

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Panayırcı, Erdal
Çirpan, H.A.
Çam, G.

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Abstract

In this paper, we present an efficient iterative receiver structure of tractable complexity for joint multiuser detection and multichannel estimation (JDE) ofdirect-sequence code-division multiple-access systems operating in the presence of timevarying flat fading channel. The tilne-varying channel is assumed to be modeled according to a piece-wise constant channel. An optimality criterion is defined and analytical expressions for the corresponding optimized weight coefficients are given. Monte-Carlo simulations of a synchronous scenario show that the proposed JDE receiver have excellent multiuser efficiency and are robust against errors in the estimation of the channel parameters. ©2008 IEEE.

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2008 IEEE 16th Signal Processing, Communication and Applications Conference, SIU --20 April 2008 through 22 April 2008 --Aydin --74111

Keywords

Access systems, Analytical expressions, Channel parameters, Ds-cdma, Iterative receivers, Joint multiuser detections, Monte-carlo simulations, Multichannel estimations, Multiuser efficiencies, Optimality criterions, Sequence codes, Weight coefficients, Binary sequences, Code division multiple access, Dielectric relaxation, Fading (radio), Fading channels, Multiuser detection, Signal processing, Channel estimation

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2008 IEEE 16th Signal Processing, Communication and Applications Conference, SIU

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