NDLI: A unified approach to joint adaptive interference cancellation and parameter estimation for CDMA systems in multipath channels

Content Provider	IEEE Xplore Digital Library
Author	de Lamare, R.C. Sampaio-Neto, R. Hjorungnes, A.
Copyright Year	2007
Description	Author affiliation: Univ. of York, York (de Lamare, R.C.; Sampaio-Neto, R.; Hjorungnes, A.)
Abstract	This paper proposes a unified approach to joint adaptive parameter estimation and interference cancellation (IC) for direct sequence code-division-multiple-access (DS-CDMA) systems in multipath channels. A unified framework is presented in which the IC problem is formulated as an optimization problem with extra degrees of freedom of an IC parameter vector for each stage and user. We propose a joint optimization method for estimating the IC parameter vector, the linear receiver filter front-end, and the channel along with minimum mean squared error (MMSE) expressions for the estimators. Based on the proposed joint optimization approach, we derive low-complexity stochastic gradient (SG) algorithms for estimating the desired parameters. Simulation results for the uplink of a synchronous DS-CDMA system show that the proposed methods significantly outperform the best known IC receivers.
Starting Page	1
Ending Page	5
File Size	310698
Page Count	5
File Format	PDF
ISBN	9781424409549
DOI	10.1109/SPAWC.2007.4401309
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-17
Publisher Place	Finland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference cancellation Parameter estimation Multiaccess communication Multipath channels Silicon carbide Detectors Filters Multiple access interference Vectors Optimization methods
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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