Title :
Detection aided recursive least squares multiuser detection in the downlink of DS/CDMA mobile systems
Author :
Thanh, Bui Ngoc ; Krishnamurthy, Vikram ; Evans, Rob
Author_Institution :
Dept. of Electr. Eng., Melbourne Univ., Parkville, Vic., Australia
Abstract :
This paper develops a sequential composite hypotheses test for detecting failure of a decision directed recursive least squares (RLS) multiuser detector (MUD) and convergence of a blind RLS MUD when used in the downlink of a DS-CDMA system. Simulations demonstrate the effectiveness of the test and characterize the SIR improvement achievable in a dynamic environment
Keywords :
code division multiple access; least squares approximations; mobile radio; multiuser channels; recursive estimation; signal detection; spread spectrum communication; DS-CDMA; RLS multiuser detector; SIR improvement; decision directed multiuser detector; downlink; dynamic environment; failure detection; mobile systems; multiuser detection; recursive least squares; sequential composite hypotheses test; Convergence; Detectors; Distributed decision making; Downlink; Least squares methods; Multiaccess communication; Multiuser detection; Resonance light scattering; Sequential analysis; Testing;
Conference_Titel :
Wireless Communications, 2001. (SPAWC '01). 2001 IEEE Third Workshop on Signal Processing Advances in
Conference_Location :
Taiwan
Print_ISBN :
0-7803-6720-0
DOI :
10.1109/SPAWC.2001.923875
