Title :
A recursive digital predistorter for linearizing RF power amplifiers with memory effects
Author :
Gilabert, P.L. ; Montoro, G. ; Cesari, A.
Author_Institution :
Univ. Politec. de Catalunya, Barcelona
Abstract :
A nonlinear auto-regressive moving average (ARMA) structure capable of compensating nonlinear memory effects in RF power amplifiers is here presented. Results on the linearity improvement, in both in-band and out-of-band distortion compensation, achieved by this baseband digital predistorter are provided. Moreover, a study on this nonlinear ARMA system stability is also reported.
Keywords :
autoregressive moving average processes; circuit stability; distortion; power amplifiers; radiofrequency amplifiers; RF power amplifiers; distortion compensation; nonlinear autoregressive moving average structure; nonlinear memory effects; recursive digital predistorter; system stability; Bandwidth; Digital signal processing; Linearity; Modulation; Nonlinear distortion; Peak to average power ratio; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Linearization of RF power amplifiers; predistortion;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429588
