Performance analysis of multistage linear parallel interference canceller in long-code CDMA systems

Chien-Hwa Hwang; Chang-Su Kim; C.-C. Jay Kuo

doi:10.1117/12.447385

2 November 2001 Performance analysis of multistage linear parallel interference canceller in long-code CDMA systems

Chien-Hwa Hwang, Chang-Su Kim, C.-C. Jay Kuo

Proceedings Volume 4529, Enabling Technologies for 3G and Beyond; (2001) https://doi.org/10.1117/12.447385
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

In this paper, we analyze the bit error probability of the multistage linear parallel interference canceller in a long- code code division multiple access (CDMA) system. To obtain the bit error probability, we approximate the decision statistic as a Gaussian random variable, and compute its mean and variance. The mean and variance of the decision statistic can be expressed as functions of the moments of (R-I), where R is the correlation matrix of the signature sequences. Since the complexity of calculating the moments increases rapidly with the growth of the stage index, a graphical representation for the moments is developed to alleviate the complexity. Propositions are presented to interpret the calculation of moments as several graph problems that are well known in the literature, i.e., the coloring, graph decomposition and Euler tour problems. It is shown that the graphical representation facilitates the analytic evaluation of the bit error probability, and the analytic results match well with the simulation results.

Citation Download Citation

Chien-Hwa Hwang, Chang-Su Kim, and C.-C. Jay Kuo "Performance analysis of multistage linear parallel interference canceller in long-code CDMA systems", Proc. SPIE 4529, Enabling Technologies for 3G and Beyond, (2 November 2001); https://doi.org/10.1117/12.447385

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