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Computer simulation of Rayleigh fading channels in MC-CDMA systems

  • Published:
Journal of Electronics (China)

Abstract

For Multi-Carrier-Code Division Multiple Access (MC-CDMA) systems, it is usually assumed that the fading of the subcarriers is frequency non-selective and independent of each other. This paper shows that the two assumptions are incompatible. In fact, the MC-CDMA signals at each subcarrier undergo fading that are highly correlated. Based on this observation, this paper develops a simulation algorithm for Rayleigh fading channels via frequency-domain correlation function, which incorporates the Doppler effect simultaneously. Numerical examples are presented to demonstrate the effectiveness of the new algorithm, with the conclusion that the independence assumption of subcarrier fading overrates the system performance.

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Author information

Authors and Affiliations

  1. National Laboratory of Radar Signal Processing, Xidian University, Xi’an, 710071, China

    Han Fangming & Zhang Xianda

  2. National Laboratory of Tsinghua Information Science and Technology, Department of Automation, Tsinghua University, Beijing, 100084, China

    Zhang Xianda

Authors
  1. Han Fangming
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  2. Zhang Xianda
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Corresponding author

Correspondence to Han Fangming.

Additional information

Supported by the Major Program of the National Natural Science Foundation of China (No.60496311).

Communication author: Han Fangming, born in 1974, male, Ph.D. candidate. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China.

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Cite this article

Han, F., Zhang, X. Computer simulation of Rayleigh fading channels in MC-CDMA systems. J. of Electron.(China) 24, 577–582 (2007). https://doi.org/10.1007/s11767-006-0003-y

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  • DOI: https://doi.org/10.1007/s11767-006-0003-y

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