Title :
On the modeling of memory nonlinear effects of power amplifiers for communication applications
Author :
Raich, Raviv ; Zhou, G. Tong
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Understanding power amplifier (PA) nonlinearity is a first step towards linearization efforts. We first explore the passband and baseband PA input/output relationships and show that they manifest differently when the PA exhibits long-term, short-term, or no memory effects. We then explain the various memory effects in the context of AM/AM and AM/PM responses. The so-called quasi-memoryless case is especially clarified. Four particular nonlinear models with memory are further investigated.
Keywords :
Volterra series; linearisation techniques; memoryless systems; nonlinear systems; power amplifiers; telecommunication; AM-AM responses; AM-PM responses; Hammerstein nonlinear systems; Volterra series; Wiener nonlinear systems; baseband; communication applications; linearization strategy; memory nonlinear effects; passband; power amplifiers; quasimemoryless case; Ambient intelligence; Application software; Baseband; Linearity; Power amplifiers; Power engineering and energy; Power engineering computing; Predistortion; Signal mapping; Table lookup;
Conference_Titel :
Digital Signal Processing Workshop, 2002 and the 2nd Signal Processing Education Workshop. Proceedings of 2002 IEEE 10th
Print_ISBN :
0-7803-8116-5
DOI :
10.1109/DSPWS.2002.1231065
