NDLI: Blind adaptive and iterative algorithms for decision feedback DS-CDMA receivers in dispersive channels

Content Provider	IEEE Xplore Digital Library
Author	de Lamare, R.C. Sampaio-Neto, R.
Copyright Year	2005
Description	Author affiliation: PUC-RIO, Rio de Janeiro (de Lamare, R.C.; Sampaio-Neto, R.)
Abstract	In this paper we examine blind adaptive and iterative decision feedback (DF) receivers for direct sequence code division multiple access (DS-CDMA) systems in frequency selective channels. Code-constrained minimum variance (CMV) and constant modulus (CCM) design criteria for DF receivers based on constrained optimization techniques are investigated for scenarios subject to multipath. Computationally efficient blind adaptive recursive least squares (RLS) algorithms are developed for estimating the parameters of DF detectors along with successive, parallel and iterative DF structures. A new successive parallel arbitrated DF scheme is presented and combined with iterative techniques for use with cascaded DF stages for mitigating the deleterious effects of error propagation. Simulations for an uplink scenario assess the new blind algorithms, DF structures and the effects of error propagation of the new techniques
Starting Page	6
Ending Page	3372
File Size	203989
Page Count	3367
File Format	PDF
ISBN	0780394143
DOI	10.1109/GLOCOM.2005.1578398
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Iterative algorithms Feedback Multiaccess communication Dispersion Direct-sequence code-division multiple access Frequency conversion Constraint optimization Design optimization Concurrent computing Least squares approximation
Content Type	Text
Resource Type	Article

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