Title :
Kalman filtering algorithm for on-line memory polynomial predistortion
Author :
Djamai, Mourad ; Bachir, Smail ; Duvanaud, Claude
Author_Institution :
Lab. d´´Autom. et d´´Inf. Ind., Univ. of Poitiers, Poitiers
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 :
adaptive Kalman filters; adaptive signal processing; linearisation techniques; nonlinear distortion; polynomials; power amplifiers; radiofrequency amplifiers; Kalman filtering algorithm; adaptive technique; baseband signals; digital predistortion; memory effects; multicarrier signal; nonlinearity compensation; on-line memory polynomial predistortion; radio-frequency power amplifier; real-time digital signal processing; sliding time-window; Baseband; Digital signal processing; Filtering algorithms; Kalman filters; Polynomials; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Signal processing;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751517
