On-line memory polynomial predistortion based on the adapted kalman filtering algorithm

Author

Bachir, Smail ; Duvanaud, Claude ; Djamai, Mourad

Author_Institution

Lab. d´´Autom. et d´´Inf. Ind., Univ. of Poitiers, Poitiers

fYear

2008

fDate

22-25 June 2008

Firstpage

65

Lastpage

68

Abstract

A new adaptive technique for digital predistortion is presented. The proposed method uses the real-time digital processing of baseband signals to compensate the nonlinearities and memory effects in radio-frequency power amplifier. Kalman filtering algorithm with sliding time-window is adapted to track the changes in the PA characteristics. Simulation and measurement results, using digital signal processing, are presented for multicarrier signals to demonstrate the effectiveness of this new approach.

Keywords

Kalman filters; distortion; power amplifiers; radiofrequency amplifiers; Kalman filtering algorithm; baseband signal; digital signal processing; multicarrier signal; online memory polynomial digital predistortion; radio-frequency power amplifier; real-time digital processing; sliding time-window; Baseband; Digital signal processing; Filtering algorithms; Kalman filters; Polynomials; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems and TAISA Conference, 2008. NEWCAS-TAISA 2008. 2008 Joint 6th International IEEE Northeast Workshop on

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-2331-6

Electronic_ISBN

978-1-4244-2332-3

Type

conf

DOI

10.1109/NEWCAS.2008.4606322

Filename

4606322