Pre-compensation for the dynamic nonlinearity of wideband wireless transmitters using augmented Wiener predistorters

Author

Liu, Taijun ; Boumaiza, Slim ; Ghannouchi, Fadhel M.

Author_Institution

Dept. of Electr. Eng., Ecole Polytechnique de Montreal, Que., Canada

Volume

5

fYear

2005

fDate

4-7 Dec. 2005

Abstract

This paper proposes an augmented Wiener predistorter to improve the pre-compensation performance of the conventional Wiener predistorter for aning the out-of-band emission of the wideband transmitter. A transmitter prototype, which is based on an Electronic Signal Generator (ESG: Agilent E4438C) and an L-band 60-Watt GaAs FET push-pull amplifier, is utilized to evaluate the performance of the new proposed augmented Wiener predistorter. The validation results by applying a two-carrier WCDMA signal to the transmitter prototype demonstrate the effectiveness of this new predistorter for suppressing the spectrum regrowth caused by the memory effects of the transmitter.

Keywords

III-V semiconductors; Wiener filters; field effect transistor circuits; gallium arsenide; microwave power amplifiers; radio transmitters; 60 W; Agilent E4438C; Electronic Signal Generator; GaAs; L-band FET push-pull amplifier; augmented Wiener predistorters; dynamic nonlinearity; memory effects; out-of-band emission; spectrum regrowth; two-carrier WCDMA signal; wideband wireless transmitters; Baseband; Linearity; Polynomials; Power amplifiers; Predistortion; Prototypes; Radiofrequency amplifiers; Signal generators; Transmitters; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606974

Filename

1606974