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http://dx.doi.org/10.7236/JIIBC.2017.17.2.105

Performance Comparison of SE-MMA and QE-MMA for Adaptive Equalization in Nonconstant modulus signal  

Lim, Seung Gag (Dept. of Information and Communication, Kongju National University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.17, no.2, 2017 , pp. 105-111 More about this Journal
Abstract
This paper compares the SE-MMA (Signed Error-MMA) and QE-MMA (Quantized Error-MMA) adaptive equalization algorithm in order to compensates the intersymbol interference due to channel in the transmission of spectral efficient nonconstant modulus signal such as 16-QAM. In the currently MMA adaptive equalizer, the error signal is needed for the updating the tap coefficient. The SE-MMA uses the polarity of error signal for reduce the computational operation in that process, the QE-MMA consider the this polarity and finite bit power-of-2 quantized component in that process, so they has different equalization performance. In order to comparing these performance, the computer simulation was performed in the same channel and environment, the output signal constellation of equalizer, residual isi and maximum distortion, MSE, SER were applied. As a result of computer simulation, the QE-MMA have more superior performance than the SE-MMA in every performance index.
Keywords
SE-MMA; QE-MMA; power-of-2 quantizer; nonconstant modulus; MSE;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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