Title :
Parameterized basis functions for numerically stable behavioral modeling of RF power amplifiers
Author :
Harguem, Afef ; Boulejfen, Noureddine ; Ghannouchi, Fadhel M. ; Gharsalla, Ali
Author_Institution :
Fac. des Sci. de Tunis, Univ. El-Manar, Tunis, Tunisia
Abstract :
In this paper, we propose a new set of parameterized basis functions suitable for behavioral modeling of RF power amplifiers exhibiting memory effects. Depending on the input signal distribution, the proposed basis functions can be optimized for numerically stable model identification procedure. The efficiency and robustness of the resulting polynomial model are demonstrated and compared to the ones of previously published polynomial models. The obtained results revealed an exceptional numerical stability regardless of the input signal statistics, making the proposed new model suitable for multimode and broadband nonlinear wireless transmitters.
Keywords :
numerical stability; polynomials; radiofrequency power amplifiers; RF power amplifiers; behavioral modeling; broadband nonlinear wireless transmitters; input signal distribution; input signal statistics; memory effects; multimode wireless transmitters; numerical stability; numerically stable model identification procedure; parameterized basis functions; polynomial model; Computational modeling; Numerical models; Numerical stability; Optimized production technology; Polynomials; Power amplifiers; Radio frequency; WCDMA; behavioral modeling; condition number; numerical stability; power amplifier;
Conference_Titel :
Power Amplifiers for Wireless and Radio Applications (PAWR), 2014 IEEE Topical Conference on
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/PAWR.2014.6825743