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Estimation of Time-Varying Multipath Rayleigh Fading Channels in Asynchronous DS-CDMA Systems

Xiao, P, Strom, E and Carrasco, R (2004) Estimation of Time-Varying Multipath Rayleigh Fading Channels in Asynchronous DS-CDMA Systems In: IEEE PIMRC, 2004-09-05 - 2004-09-08.

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We present the channel estimation algorithms for the asynchronous direct-sequence code-division multiple access (DS-CDMA) systems employing the orthogonal signalling formats and long scrambling codes. The performance of a communication system depends largely on its ability to retrieve an accurate measurement of the underlying channel. We investigated channel estimation algorithms under different conditions. The estimated channel information is used to enable the coherent data detection to combat the detrimental effect of multipath propagation of the transmitted signal as well as multiple access interference (MAI). Different channel estimation schemes are evaluated and compared in terms of mean square error (MSE) of the channel estimate and the bit error rate (BER) performance. Based on our analysis and numerical results, some recommendations are made on how to choose appropriate channel estimators in practical systems.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
Xiao, P
Strom, E
Carrasco, R
Date : 5 September 2004
DOI : 10.1109/PIMRC.2004.1368784
Contributors :
Additional Information : © 2004 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Symplectic Elements
Date Deposited : 15 Nov 2013 11:37
Last Modified : 31 Oct 2017 15:12

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