DocumentCode :
696604
Title :
Blind separation of convolved mixtures for CDMA systems
Author :
Cristescu, Razvan ; Ristaniemi, Tapani ; Joutsensalo, Jyrki ; Karhunen, Juha
Author_Institution :
Neural Networks Research Center, Helsinki University of Technology, P.O. Box 5400, FIN-02015 HUT, Espoo, Finland
fYear :
2000
fDate :
4-8 Sept. 2000
Firstpage :
1
Lastpage :
4
Abstract :
This paper presents a new method for symbol estimation in the downlink of a CDMA communication system. Our approach is based on the observation that the slowly-fading CDMA signal model may be expressed as a linear combination of the convolved independent symbol sequences. A blind source separation approach based on maximization of output entropy is used for the blind separation of the sources; the symbols corresponding to the user of interest are determined using a small training sequence. Our method shows good simulation results when compared to traditional symbol separation techniques.
Keywords :
Delays; Equations; Estimation; Fading; Mathematical model; Multiaccess communication; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2000 10th European
Conference_Location :
Tampere, Finland
Print_ISBN :
978-952-1504-43-3
Type :
conf
Filename :
7075225
Link To Document :
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