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http://dx.doi.org/10.7236/JIWIT.2011.11.3.115

The Performance Comparison of CR-CMA and CM-CMA Adaptive Equalization in 16-QAM Signal  

Lim, Seung-Gag (공주대학교 정보통신공학부)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.11, no.3, 2011 , pp. 115-120 More about this Journal
Abstract
This paper is concerned with the performance comparison of CR-CMA (Coordinate Reduction-CMA) and CM-CMA (Constellation Matching-Constant Modulus Algorithm) that is used for improving the convergence characteristic and residual intersymbol interference which are used as the performance index for an adaptive equalizer. The equalizer is used to reduce the distortion caused by the intersymbol interference on the wireless and the wired band-limited channel, and the blind method which does not need for extra bandwidth by the training sequence of digital code are researched. Recently, by using the merit of simple operation in the CMA, the performance improvement is obtained by the modifying the cost function of it. In this paper, the new algorithm, CR-CMA and CM-CMA, the performance analysis are performed and compared by computer simulation. The CR-CMA has a superior equalization characteristics in the recovered constellation, convergence speed and residual intersymbol interference than the CM-CMA by computer simulation.
Keywords
Adaptive Equalizer; CR-CMA; CM-CMA;
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Times Cited By KSCI : 2  (Citation Analysis)
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