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Proceedings Paper

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

Paper Details

Date Published: 2 November 2001
PDF: 12 pages
Proc. SPIE 4529, Enabling Technologies for 3G and Beyond, (2 November 2001); doi: 10.1117/12.447385
Show Author Affiliations
Chien-Hwa Hwang, Univ. of Southern California (United States)
Chang-Su Kim, Univ. of Southern California (South Korea)
C.-C. Jay Kuo, Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 4529:
Enabling Technologies for 3G and Beyond
Vijay K. Garg; Carl R. Nassar; Steve J. Shattil; Carl R. Nassar; Steve J. Shattil, Editor(s)

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