An analytical model for performance evaluation of parallel interference cancellers in CDMA systems

Author

Xue, Guoqiang ; Weng, Jian F. ; Le-Ngoc, Tho ; Tahar, Sofiéne

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

4

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

184

Lastpage

186

Abstract

In multistage parallel interference cancellation, the tentative decisions for different users at each stage are mutually correlated, and they are also correlated with Gaussian noise. By taking the correlations into consideration and employing Price´s theorem, an analytical model is proposed to refine the variance evaluation of the final decision variable. It is shown that the refined variance is very close to that obtained by simulation and can improve the accuracy in bit error rate evaluation.

Keywords

Gaussian noise; code division multiple access; correlation methods; error statistics; interference suppression; radiofrequency interference; BER; CDMA systems; Gaussian noise; PIC detectors; Price´s theorem; analytical model; bit error rate evaluation; decision variable; multistage parallel interference cancellation; mutually correlated tentative decisions; parallel interference cancellers; performance evaluation; simulation; variance evaluation; AWGN; Additive white noise; Analytical models; Bit error rate; Detectors; Gaussian noise; Interference cancellation; Multiaccess communication; Multiple access interference; Performance analysis;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.848407

Filename

848407