Power Amplifiers Linearization Based on Digital Predistortion with Memory Effects

Author

Barahimi, Amin ; Mirzakuchaki, Sattar ; Karami, Saeid

Author_Institution

Electr. Eng. Dept., Iran Univ. of Sci. & Technol., Tehran, Iran

Volume

1

fYear

2009

fDate

28-30 Dec. 2009

Firstpage

26

Lastpage

29

Abstract

Power amplifiers require linearization in order to reduce adjacent inter-modulation distortion without losing efficiency. Digital predistortion is a cost effective method to achieve this goal and it needs an accurate model of the amplifier. Most of the amplifier models are based on memoryless modeling. This kind of modeling is simple but it´s not accurate enough if linearization is important; and also for wide band modulations like QAM, we should consider the memory effects of power amplifiers.

Keywords

distortion; linearisation techniques; power amplifiers; digital predistortion; intermodulation distortion; memory effects; power amplifier linearization; Costs; Equations; Frequency; Nonlinear distortion; Polynomials; Power amplifiers; Power engineering computing; Predistortion; Quadrature amplitude modulation; Voltage; memory effect; power amplifier; predistortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Electrical Engineering, 2009. ICCEE '09. Second International Conference on

Conference_Location

Dubai

Print_ISBN

978-1-4244-5365-8

Electronic_ISBN

978-0-7695-3925-6

Type

conf

DOI

10.1109/ICCEE.2009.141

Filename

5380676