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Authors:A. Behravan: Department of Signals and Systems, Chalmers University of Technology, Sweden
T. Eriksson: Department of Signals and Systems, Chalmers University of Technology, Sweden
A. Svensson: Department of Signals and Systems, Chalmers University of Technology, Sweden
H. Zirath: Department of Microtechnology and Nanoscience, Chalmers University of Technology, Sweden
Publication title:Adaptive predistorter design for nonlinear high power amplifiers
Conference:GigaHertz 2003. Proceedings from the Seventh Symposium
Publication type: Abstract and Fulltext
Issue:008
Article No.:005
Abstract:In this paper we present and compare several models of compensating the nonlinearity of the RF front-end of a wireless system. The baseband compensation techniques have gained more attentions due to the simplicity of DSP implementation and also utilizing adaptive algorithms. Two baseband compensation techniques, namely predistortion and postdistortion (equalization) of the baseband signal are discussed and teh problems associated with each one is addressed. Furthermore a combination of a predistorter and a nonlinear equalizer is studied. It is shown that under realistic conditions with a frequently saturated amplifier and ISI channel, the latter methods is able to compensate the nonlinearity up to a good extent, while the first two methods can only operate under certain channel conditions and nonlinearity type.
Language:English
Year:2003
No. of pages:4
Series:Linköping Electronic Conference Proceedings
ISSN (print):1650-3686
ISSN (online):1650-3740
File:http://www.ep.liu.se/ecp/008/005/ecp00805.pdf
Available:2003-11-06
Publisher:Linköping University Electronic Press, Linköpings universitet

REFERENCE TO THIS PAGE
A. Behravan, T. Eriksson, A. Svensson, H. Zirath (2003). Adaptive predistorter design for nonlinear high power amplifiers, GigaHertz 2003. Proceedings from the Seventh Symposium http://www.ep.liu.se/ecp_article/index.en.aspx?issue=008;article=005 (accessed 8/31/2014)