Innovative Technique for HPA Characteristics Extraction and Accurate Predistorsion Function Modeling

Blaise Mulliez (1, 2) , Emmanuel R. Moutaye (3) , Hélène Tap (1, 2)

1 LAAS-OSE - Équipe Optoélectronique pour les Systèmes Embarqués
2 Toulouse INP - Institut National Polytechnique (Toulouse)
3 CNES - Centre National d'Études Spatiales [Toulouse]

In telecommunications, the combination of modulations with non-constant envelope together with nonlinearities leads to strong distortions of the transmitted signals. The linearization purpose is to assure an optimal link transmission quality. In this article, an innovative method to extract linearization characteristics is presented. This technique, using directly experimental data rather than a High Power Amplifier (HPA) modeling, is fast and allows an important linearization accuracy and computational workload improvement compared to classical modeling techniques. It is then applied to determine the ideal linearizer AM/AM and AM/PM transfer characteristics to exploit three real HPA to their fullest.

Mots clés: predistorsion; characteristics extraction; function modeling; High Power Amplifier

Domaines: Sciences de l'ingénieur [physics]

Blaise Mulliez, Emmanuel R. Moutaye, Hélène Tap. Innovative Technique for HPA Characteristics Extraction and Accurate Predistorsion Function Modeling. Wireless Power Week, Jun 2019, London, United Kingdom. ⟨hal-02352186⟩