CDMA delay estimation using fast ICA algorithm

Author

Cristescu, Razvan ; Ristaniemi, Tapani ; Joutsensalo, J. ; Karhunen, Juha

Author_Institution

Neural Networks Res. Centre, Helsinki Univ. of Technol., Espoo, Finland

Volume

2

fYear

2000

fDate

2000

Firstpage

1117

Abstract

In this paper, we propose a method for timing acquisition in a code division multiple access (CDMA) system. The assumptions made are that the data signals corresponding to different users are independent, and that a minor pilot sequence corresponding to the desired user is available. An independent component analysis (ICA) approach based on a fast fixed-point algorithm is used for simultaneous demodulation of the symbol sequence and finding of synchronisation information of the user of interest; no additional pilot signal is used for the timing acquisition. Our method shows better performance than conventional CMOE receiver and matched filter detector

Keywords

cellular radio; code division multiple access; delay estimation; demodulation; synchronisation; CDMA delay estimation; code division multiple access; data signals; demodulation; fast ICA algorithm; fast fixed-point algorithm; independent component analysis; performance; pilot sequence; symbol sequence; synchronisation information; timing acquisition; Delay estimation; Downlink; Frequency synchronization; Independent component analysis; Matched filters; Mobile handsets; Multiaccess communication; Signal processing; Signal processing algorithms; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-6463-5

Type

conf

DOI

10.1109/PIMRC.2000.881593

Filename

881593