Convergence analysis of iterative interference cancellation receivers for turbo-coded DS-CDMA systems

Author

Bejide, Emmanuel Oluremi ; Takawira, Fsmbirai

Author_Institution

Dept. of Electr. Eng., Cape Town Univ., Rondebosch

Volume

1

fYear

2004

fDate

17-17 Sept. 2004

Firstpage

197

Abstract

We investigate the behaviour of iterative interference cancellation receivers in turbo-coded DS-CDMA systems. We propose a methodology for the convergence analysis of the receivers. Our method is based on the Gaussian approximation technique. Analytical expressions for the SNR transfer function of the interference cancellation stage of the receiver are presented. This is in contrast to the semi-analytical approach that has been used in the literature to determine the variance transfer function of the interference cancellation stage. Results show that the proposed methodology is accurate for the convergence analysis of the iterative interference cancellation receiver

Keywords

Gaussian processes; approximation theory; code division multiple access; convergence of numerical methods; interference suppression; iterative methods; radio receivers; radiofrequency interference; spread spectrum communication; transfer functions; turbo codes; Gaussian approximation technique; SNR transfer function; convergence analysis; iterative interference cancellation receivers; turbo-coded DS-CDMA systems; variance transfer function; Africa; Convergence; Error correction; Gaussian approximation; Interference cancellation; Iterative decoding; Iterative methods; Multiaccess communication; Multiuser detection; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2004. 7th AFRICON Conference in Africa

Conference_Location

Gaborone

Print_ISBN

0-7803-8605-1

Type

conf

DOI

10.1109/AFRICON.2004.1406658

Filename

1406658