Title :
Modeling and Linearization Method for Nonlinear Power Amplifier with Memory Effect for Wideband Application
Author :
Karkhaneh, H. ; Sadeghpour, T. ; Ghorbani, A. ; Alhameed, R.A.
Author_Institution :
Amirkabir Univ. of Technol., Tehran
Abstract :
This paper represents a new adaptive method to model the nonlinearity of power amplifiers(PAs) with memory effects based on Wiener approach and also adaptive predistorter to counterbalance the AM/AM and AM/PM nonlinear effects of the transmitter power amplifier is proposed by Hammerstein approach. Finally we consider the effectiveness of proposed method on performance of OFDM signal as the wideband system by reduction of distortion. It is confirmed by computer simulation that proposed approach produces a faster convergence speed than the previous adaptive predistortion technique.
Keywords :
OFDM modulation; adaptive signal detection; linearisation techniques; power amplifiers; stochastic processes; wideband amplifiers; AM/AM nonlinear effects; AM/PM nonlinear effects; Hammerstein approach; OFDM signal; Wiener approach; adaptive method; adaptive predistortion; distortion reduction; linearization method; memory effect; nonlinear power amplifier; transmitter power amplifier; wideband application; Adaptive algorithm; Broadband amplifiers; Computer simulation; Intersymbol interference; Nonlinear distortion; Nonlinear filters; Nonlinear systems; OFDM modulation; Power amplifiers; Transmitters;
Conference_Titel :
Electromagnetics in Advanced Applications, 2007. ICEAA 2007. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-0767-5
Electronic_ISBN :
978-1-4244-0767-5
DOI :
10.1109/ICEAA.2007.4387319
