Detection-aided recursive least squares adaptive multiuser detection in DS/CDMA

TitleDetection-aided recursive least squares adaptive multiuser detection in DS/CDMA
Publication TypeJournal Article
Year of Publication2002
AuthorsThanh, B. N., V. Krishnamurthy, and R. J. Evans
JournalSignal Processing Letters, IEEE
Volume9
Pagination229 - 232
Date Publishedaug.
ISSN1070-9908
Keywordsadaptive signal detection, blind RLS MUD, BLRS MUD, code division multiple access, convergence, decision-directed recursive least square adaptive multiuser detector, decision-directed RLS MUD, detection-aided recursive least squares adaptive multiuser detection, direct-sequence/code division multiple access systems, downlink, DS/CDMA, dynamic environment, failure, least squares approximations, receivers, sequential composite hypotheses test, SIR improvement, spread spectrum communication, time-varying interferers
Abstract

This letter develops a sequential composite hypotheses test for detecting failure of a decision-directed recursive least square (RLS) adaptive multiuser detector (MUD) and convergence of a blind RLS (BLRS) MUD when used in the downlink of direct-sequence/code division multiple access (DS/CDMA) systems. Simulations are provided to demonstrate the effectiveness of the test and to characterize the SIR improvement achievable in a dynamic environment where the number of interferers is time-varying.

URLhttp://dx.doi.org/10.1109/LSP.2002.803012
DOI10.1109/LSP.2002.803012

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