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http://dx.doi.org/10.7236/JIIBC.2020.20.1.95

A Performance Evaluation of mSE-MMA Adaptive Equalization Algorithm in QAM 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.20, no.1, 2020 , pp. 95-100 More about this Journal
Abstract
This paper related with the performance evaluation of mSE-MMA (modified Signed Error-Multi Modulus Algorithm) adaptive equalization algorithm which is possible to reduce the distortion that is occurs in nonlinear communication channel like as additive noise, intersymbol interference and fading. The SE-MMA algorithm are emerged in order to reducing the computational load compared to the presently MMA algorithm, it has the degraded equalization performance by this. In order to improve the performance degradation of SE-MMA, the mSE-MMA controls the step size according to the existence of arbitrary radius circle of equalizer output is centered at transmitted symbol point. The performance of proposed mSE-MMA algorithm were compared to present SE-MMA using the same channel and noise environment by computer simulation. For this, the recoverd signal constellation which is the output of equalizer, residual isi and MD (Maximum Distortion), MSE learning curve which is represents the convergence performance and SER which is represents the roburstness of noise were used as performance index. As a result of simulation, the mSE-MMA has more superior to the SE-MMA in every performance index, and was confirmed that mSE-MMA has roburstness to the noise in the SER performance than SE-MMA especially.
Keywords
SE_MMA; MSE_MMA; Residual isi; Constellation Reduction; Maximum Distortion;
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1 J.T.Yuan, T.C.Lin, "Equalization and Carrier Recovery of CMA and MMA in Blind Adaptive Receivers", IEEE Trans. on Signal Processing, Vol. 58, No. 6, pp.3206-3217, June 2010. doi : 10.1109/TSP.2010.2044255   DOI
2 J.Yang, J.J.Werner, G.A.Dumont, "The Multimodulus Blind Equalization Algorithm", 13th Int. Conf. of DSP, Vol.1, pp.127-130, July 1997. doi : 10.1109/ICDSP.1997.627988
3 V.Weerackody, S.A.Kassam, K.R.Laker, "A simple hard-limited adaptive algorithm for blind equalization", IEEE Trans. Cir. Sys., Vol.39, No.7, pp.482-487, July 1992. doi : 10.1109/82.160173   DOI
4 K.Banovic, R.Lee, E.A.Raheem, M.A..S.Khalid, "Computationally-Efficient Methods for Blind Adaptive Equalization", 48th Middlewest Symp. on Circuits and Systems, Vol.1, pp.341-344, 2005. doi : 10.1109/MWSCAS.2005.1594108
5 Wen si-yuan, L.Feng, "A Computationally Efficient Multi-modulus Blind Equalization Algorithm", 2nd IEEE Int. Conf. of Infor. Eng. and Management, pp.685-687, 2010. doi : 10.1109/ICIME.2010.5478261
6 W. Rao, G. Y. Cai, "New constant modulus blind equalization algorithm based on variable segment error function", Jour. of System Simulation, Vol. 9, No. 12, pp.2686-2689, 2006.
7 S.G.Lim, D.S.Kang, "Performance of SE-MMA Blind Adaptive Equalization Algorithm in QAM System", Jour. on. I.W.I.T., Vol.13, No.3, pp.63-69, June 2013.
8 K.N.Oh, "An Algorithm for Variable Step-Size Improving Steady-State Performance of Blind Equalization", Jour. of K.I.I.T., Vol.9, No.10, pp.43-48, Oct. 2011.