Blind equalization of multiuser CDMA channels: a frequency-domain approach

Author

Diamantaras, Konstantinos I. ; Petropulu, Athina P.

Author_Institution

Dept. of Inf., Technol. Educ. Inst., Sindos, Greece

Volume

4

fYear

1999

fDate

15-19 Mar 1999

Firstpage

1801

Abstract

The blind estimation of mixing channels resulting from frequency selective fading and multipath in a multi-user CDMA system is an important problem in wireless communications. We present a novel frequency-domain approach using second order spectral statistics for recovering the unknown channels. Unlike other methods which are based on time-domain analysis we make no particular assumption about the support of the mixing channels except that they have finite length (FIR). The method is based on the fact that the source sequences obtain a known spectral color derived from the corresponding spreading code used in CDMA

Keywords

FIR filters; blind equalisers; code division multiple access; fading channels; frequency-domain analysis; land mobile radio; multipath channels; multiuser channels; spectral analysis; statistical analysis; FIR; blind equalization; blind estimation; finite length; frequency selective fading; frequency-domain approach; mixing channels; multipath; multiuser CDMA channels; second order spectral statistics; source sequences; spectral color; spreading code; unknown channels; wireless communications; Baseband; Blind equalizers; Computer science education; Educational technology; Fading; Finite impulse response filter; Frequency domain analysis; Informatics; Interference; Multiaccess communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on

Conference_Location

Phoenix, AZ

ISSN

1520-6149

Print_ISBN

0-7803-5041-3

Type

conf

DOI

10.1109/ICASSP.1999.758270

Filename

758270