Digital Predistortion Using a Vector Switched Model
Journal article, 2012

Abstract—A switched behavioral model considering memory effects with special focus on ”difficult” amplifier architectures is proposed in this paper. The proposed model is shown to be very simple and linearly identifiable. A digital predistorter based on the proposed model is implemented for a 100–W, 2.6 GHz Doherty power amplifier that has been considered difficult in other reports, and it is shown that the proposed model can succesfully linearize the amplifier. In particular, the proposed model and the digital predistorter is shown to outperform other state-of-the-art models and digital predistorers in terms of computational complexity for a given desired accuracy.

memory polynomial

volterra series

power amplifiers

predistortion

modeling

Author

Sepideh Afsar Doost

GigaHertz Centre

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Thomas Eriksson

GigaHertz Centre

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Christian Fager

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN)

Vol. 60 4 1166-1174

Areas of Advance

Information and Communication Technology

Subject Categories

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TMTT.2012.2184295

More information

Created

10/7/2017