Title :
An analytical model for performance evaluation of multistage parallel interference cancellation detectors in CDMA systems
Author :
Xue, Guoqiang ; Weng, Jianfeng ; LE-NGOC, THO ; Tahar, Sofiène
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
In multistage parallel interference cancellation (PIC), multiaccess interference from different users are mutually correlated. In this paper, an analytical model is proposed to refine the variance of the decision variable by taking the correlation into account. Price´s theorem is used to evaluate the non-linear relations involved in some of the covariances. It is shown that the derived variance is very close to that obtained by simulation and improves the accuracy of BER evaluation
Keywords :
AWGN; code division multiple access; correlation methods; covariance analysis; error statistics; interference suppression; multiuser channels; radiofrequency interference; signal detection; AWGN; BER evaluation accuracy; CDMA systems; Price´s theorem; additive white Gaussian noise; analytical model; correlated interference; covariances; decision variable; multiaccess interference; multistage parallel interference cancellation detectors; nonlinear relations; performance evaluation; simulation; variance; AWGN; Additive white noise; Analytical models; Bit error rate; Detectors; Gaussian noise; Gaussian processes; Interference cancellation; Multiaccess communication; Performance analysis;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.798615
