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Performance Improvement of SMMA Adaptive Equalization Algorithm using Adaptive Modulus in QAM Signal
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 Title & Authors
Performance Improvement of SMMA Adaptive Equalization Algorithm using Adaptive Modulus in QAM Signal
Lim, Seung-Gag;
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 Abstract
This paper deals with AM-SMMA (Adaptive Modulus-SMMA) adaptive equalization algorithm that is possible to improves the equalization performance using adaptive modulus which is propotional to the output signal power of equalizer in the current SMMA algorithm. The fixed statistic modulus of transmitted QAM signal is used in current SMMA algorithm in order to generate the error signal for updating the tap coefficient of equalizer. The adaptive modulus which is propotion to the equalizer output signal power is used in the proposed AM-SMMA. The computer simulation was performed in order to confirm the improved equalization performance of proposed algorithm. The performance index includes the output signal constellation, the residual isi and maximum distortion that is for the convergence characteristics, the SER. As a result of computer simulation, the residual isi, maximum distortion are better in the small weighting values. But in SER performance is better in the large weighting values.
 Keywords
SMMA;AM-SMMA;Residual isi;Maximum Distortion;dispersion constant;
 Language
Korean
 Cited by
 References
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