Look-up table implementation of a slow envelope dependent digital predistorter for envelope tracking power amplifiers

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Title:	Look-up table implementation of a slow envelope dependent digital predistorter for envelope tracking power amplifiers
Author:	Gilabert Pinal, Pere Lluís; Montoro López, Gabriel
Other authors:	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CMC - Control, Monitorització i Comunicacions
Abstract:	This letter presents a dynamic slow envelope dependent digital predistorter (SED-DPD) capable of compensating for the nonlinear distortion and memory effects that arise in envelope tracking (ET) power amplifiers (PAs) when using a slow version of the signal's envelope to dynamically supply the PA drain voltage. Moreover, a new DPD architecture based on the combination of several basic predistortion cells (BPCs) is presented to allow the FPGA implementation of the proposed SED-DPD. Finally, results showing the necessity and linearization performance of the proposed dynamic SED-DPD are provided.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència -Power amplifiers -Amplifiers, Radio frequency -Digital predistortion (DPD) -envelope tracking (ET) -power amplifier (PA) -slow envelope -Amplificadors de potència -Amplificadors (Electrònica)
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
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