Efficient bit error analysis of asynchronous code-division multiple-access systems in Rician fading

Authors:
Jen-Shiun Chen
Affiliations:
Southern Illinois Univ., Edwardsville, IL
Venue:
Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
Year:
2008

Citing 3
Cited 0

Wireless Communications: Principles and Practice

Wireless Communications: Principles and Practice
Probability Distributions Involving Gaussian Random Variables: A Handbook for Engineers, Scientists and Mathematicians

Probability Distributions Involving Gaussian Random Variables: A Handbook for Engineers, Scientists and Mathematicians
Accurate DS-CDMA bit-error probability calculation in Rayleigh fading

IEEE Transactions on Wireless Communications

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Abstract

The paper deals with code-division multiple-access (CDMA) systems where users employ random code sequences and transmit asynchronously. It is assumed that the transmitted signals propagate through statistically independent, Rician fading channels. Bit error evaluation of CDMA systems in Rician fading is considered. Based on a flat Rician fading model and the Simplified Improved Gaussian Approximation (SIGA) method, new closed-form equations are derived for the bit error probability (BEP). The new SIGA equations allow one to analyze the effects of both deterministic and Rayleigh fading signal components on the BEP. The new equations are efficient and accurate as long as the CDMA processing gain is large and are subject to some limitations on system parameters. Computational data confirm the validity of the new equations and indicate how Rician parameters affect the BEP.