Browse > Article
http://dx.doi.org/10.7236/JIIBC.2020.20.2.103

A Performance Evaluation of mDSE-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.2, 2020 , pp. 103-108 More about this Journal
Abstract
This paper related with the performance evaluation of mDSE-MMA adaptive equalization algorithm which is possible to reduce the distortion that occurs in nonlinear communication channel like as additive noise, intersymbol interference and fading when transmitting the QAM signal. The DSE-MMA algorithm is possible to reduce 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 DSE-MMA, the mDSE-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 mDSE-MMA algorithm were compared to present DSE-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, MSE learning curve which is represents the convergence performance and SER were applied as performance index. As a result of simulation, the mDSE-MMA has more superior to the DSE-MMA in every performance index.
Keywords
SE_MMA; mDSE_MMA; Residual isi; Constellation Reduction; Maximum Distortion;
Citations & Related Records
연도 인용수 순위
  • Reference
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 : https://doi.org/10.1109/TSP.2010.2044255   DOI
2 J.Yang, J.J.Werner, G.A.Dumont, "The Multimodul-us Blind Equalization Algorithm", 13th Int. Conf. of DSP, Vol.1, pp.127-130, July 1997. DOI : https://doi.org/10.1109/ICDSP.1997.627988
3 P. Schniter, C. R. Johnson, "Dithered Signed-Error CMA : Robustness, Computationally Efficient Blind Adaptive Equalization", IEEE Trans. Signal Proc., Vol.47, No.6, pp.1592-1603, June 1999. DOI : https://doi.org/10.1109/78.765129   DOI
4 A. Tawfik, E. A. Raheem, P. Agthoklis, "A Modified Dithered Signed-Error Constant Modulus algorithm For Blind Adaptive Equalizer", 7th Int. Conf. on ICECS, pp.688-691, 2000. DOI : https://doi.org/10.1109/ICECS.2000.912971
5 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 : https://doi.org/ 10.1109/92.160173   DOI
6 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.
7 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: https://doi.org/10.1109/MWSCAS.2005.1594108
8 R. M. Gray, T. G. Stockham, "Dithered Quantizers", IEEE Trans. on Inf. Theory, Vol.39, No.3, May 1993. DOI : https://doi.org/10.1109/18.256489