Behavioral Power Amplifier Modeling and Digital Predistorter Design with a Chirp Excitation Signal

Author

Aladrén, Leticia ; García-Dúcar, Paloma ; De Mingo, Jesús ; Sánchez-Pérez, César ; Carro, Pedro Luis

Author_Institution

Dept. of Electron. Eng. & Commun., Univ. of Zaragoza, Zaragoza, Spain

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

5

Abstract

Digital predistortion techniques are widely utilized to linearize radio frequency power amplifiers (PAs). In their training process, they commonly use filtered Average White Gaussian Noise (AWGN) or the same signal as the transmitted. In this paper an improved calibration waveform for PA behavioral modeling and baseband digital predistortion is proposed. This signal is suitable for different amplifiers, by modifying their configurable parameters. A reduction of the training time and an enhancement in the out-of-band emission level up to 14 dB are achieved.

Keywords

AWGN; chirp modulation; power amplifiers; AWGN; baseband digital predistortion; behavioral power amplifier modeling; calibration waveform; chirp excitation signal; digital predistorter design; filtered average white Gaussian noise; radio frequency power amplifier; Calibration; Chirp; Computational modeling; Gain; OFDM; Predistortion; Training;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Budapest

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956196

Filename

5956196