A Performance Comparison of mSE-MMA and mDSE-MMA Adaptive Equalization Algorithm in 16-QAM Signal Transmission

The Journal of the Institute of Webcasting, Internet and Telecommunication Pub Date : 2021-01-01 DOI:10.7236/JIIBC.2021.21.2.61

Seung-Gag Lim

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引用次数: 1

Abstract

This paper related with the performance comparison of mSE-MMA and mDSE-MMA adaptive equalization algorithm which is possible to reduce the intersymbol interference that occurs in the nonlinear communication channel transmitting 16-QAM signal. This two algorithm is possible to reduce the computational load compared to the current MMA algorithm, it has the degraded equalization performance due to simplified arithmetic in order to applying the mobile communication terminal. In order to improve the performance degradation, they controls the step size according to the existence of arbitrary radius circle of equalizer output compared to transmitted symbol point. The variation of step size according to this principle is applied to the SE-MMA and DSE-MMA , namely mSE-MMA and mDSE-MMA algorithm, the algorithm’s performance were compared in the same channel and noise environment by computer simulation. As a result of simulation, the mSE-MMA has more superior to the mDSE-MMA in residual value of every performance index and SER performance , and the vice versa result in convergence speed.

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mSE-MMA与mSE-MMA自适应均衡算法在16-QAM信号传输中的性能比较

本文比较了mSE-MMA和mDSE-MMA自适应均衡算法的性能，该算法可以减少16-QAM信号在非线性通信信道中产生的码间干扰。与现有的MMA算法相比，这两种算法可以减少计算量，但为了应用于移动通信终端，由于算法简化，均衡性能降低。为了改善性能退化，他们根据均衡器输出相对于传输符号点的任意半径圆的存在来控制步长。根据这一原理将步长变化应用于SE-MMA和DSE-MMA，即mSE-MMA和mDSE-MMA算法，通过计算机仿真比较了算法在相同信道和噪声环境下的性能。仿真结果表明，mSE-MMA在各性能指标的残差值和SER性能上均优于mDSE-MMA，反之则在收敛速度上优于mSE-MMA。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Journal of the Institute of Webcasting, Internet and Telecommunication

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