Improvement of downlink LTE system performances using nonlinear equalization methods based on SVM and Wiener–Hammerstein |
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Authors: | Nasreddine Mallouki Bechir Nsiri Mohammad Ghanbarisabagh Walid Hakimi Mahmoud Ammar |
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Affiliation: | 1.Sys’comLab,ENIT,Tunis,Tunisia;2.Faculty of Engineering,Islamic Azad University North Tehran Branch,Tehran,Iran |
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Abstract: | In this paper, we present versatile nonlinear equalizer based on support vector machine for a standard downlink LTE link. The nonlinear effects are introduced through a solid state power amplifier. The equalizer is compared with a linear RLS and nonlinear Wiener–Hammerstein (W–H) for 16QAM–MIMO–OFDM transmission, revealing improved performance at 1 Mb/s, by 3 and 2 dB in SNR, respectively, when targeting a EVM (dB) of ?60 dB. SVM equalization also outperforms the Wiener–Hammerstein by 1 dB in SNR. |
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