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Piecewise Volterra Series Approximation for Improved Non-Linear Channel Modelization and Detection

Lucciardi, Jean-Alain and Mesnager, Gilles and Thomas, Nathalie and Poulliat, Charly and Boucheret, Marie-Laure and Buscarlet, Guillaume Piecewise Volterra Series Approximation for Improved Non-Linear Channel Modelization and Detection. (2019) In: IEEE Global Communications Conference (GLOBECOM 2018), 9 December 2018 - 13 December 2018 (Abu Dhabi, United Arab Emirates).

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Official URL: https://doi.org/10.1109/GLOCOM.2018.8647907

Abstract

In satellite communications, the non-linear distortions introduced by the amplifier in the payload have to be overcome. When advanced mitigation techniques are considered at the receiver side, the current channel model is often based on Volterra series derived from an approximation of the non linear transfer function of the on-board amplifier. This nonlinear model is conditioning the performance at the receiver side. In this paper, a new non-linear model is proposed, leading to improved receiver performances. The polynomial approximation is improved considering both the usual model truncation to the 3rd order and the signal fluctuation at the input of the amplifier. First, the impact of the polynomial order of the AM/AM and AM/PM curve approximation is studied. Then, a non-linear model is derived based on a piecewise polynomial approximation of the amplifier response. Based on this refined nonlinear model, significant detection performance improvements are shown for both Nyquist and Faster-than-Nyquist rates.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org This papers appears in Proceedings of GLOBECOM 2018 Electronic ISBN: 978-1-5386-4727-1 The original PDF of the article can be found at: https://ieeexplore.ieee.org/document/8647907 Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
HAL Id:hal-02191792
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > IRT Saint Exupéry - Institut de Recherche Technologique (FRANCE)
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Deposited On:09 Jul 2019 10:35

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