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

fYear

2007

fDate

17-21 Sept. 2007

Firstpage

387

Lastpage

390

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICEAA.2007.4387319

Filename

4387319