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http://dx.doi.org/10.7236/JIIBC.2019.19.2.79

A Performance Comparison of CM-MMA and RMMA Blind Equalization Algorithm in QAM Signal Transmission  

Lim, Seung-Gag (Dept. of Information and Communication, Kongju National University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.19, no.2, 2019 , pp. 79-84 More about this Journal
Abstract
This paper compare the performance of CM-MMA (Constellation Matching-MMA) and RMMA (Region-based MMA) blind equalization algorithm for improve the QoS by minimizing the intersymbol interference that is occurred in nonlinear communication channel when transmitting the QAM signal. In the tap coefficient update for adaptive, CM-MMA use the error of nonconstant modulus signal adding the current MMA cost fuction and constellation matching error terms of sinusoidal power function, and the RMMA use the error by transfoms the nonconstant modulus signal of equalizer output constellation to 4-QAM constant modulus signal. They has different equalization performance by these error signal, it were compared in this paper by simulation, and performance index such as output signal constellation of equalizer, residual isi, maximum distortion, SER curves are applied for this. As a result of computer simulation, the RMMA has more better performance in the every performance index, convergence speed, residual value, noise robustness compared to CM-MMA.
Keywords
MMA; CME; RMMA; residual isi; MSE;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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