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Improvement of downlink LTE system performances using nonlinear equalization methods based on SVM and Wiener–Hammerstein

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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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Authors and Affiliations

  1. Sys’comLab, ENIT, Le Belvédère, BP 37, 1002, Tunis, Tunisia

    Nasreddine Mallouki, Bechir Nsiri, Walid Hakimi & Mahmoud Ammar

  2. Faculty of Engineering, Islamic Azad University North Tehran Branch, Tehran, Iran

    Mohammad Ghanbarisabagh

Authors
  1. Nasreddine Mallouki
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  2. Bechir Nsiri
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  3. Mohammad Ghanbarisabagh
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  4. Walid Hakimi
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  5. Mahmoud Ammar
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Correspondence to Mohammad Ghanbarisabagh.

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Mallouki, N., Nsiri, B., Ghanbarisabagh, M. et al. Improvement of downlink LTE system performances using nonlinear equalization methods based on SVM and Wiener–Hammerstein. Wireless Netw 23, 2447–2454 (2017). https://doi.org/10.1007/s11276-016-1290-3

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  • DOI: https://doi.org/10.1007/s11276-016-1290-3

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