Unconditionally convergent pre-distortion of non-linear high power amplifiers

Author

Sala, Josep ; Durney, Hugo

Author_Institution

Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain

Volume

3

fYear

2001

fDate

2001

Firstpage

1649

Abstract

The use of high power amplifiers (HPA) in digital communications is plagued with non-linear (AM/AM and AM/PM) distortion. This is specially acute for those modulations that are not constant amplitude, such as OFDM or MQAM. We present a pre-distortion algorithm that, in contrast to previously researched architectures, is unconditionally convergent

Keywords

OFDM modulation; amplitude modulation; convergence of numerical methods; nonlinear distortion; phase modulation; power amplifiers; probability; quadrature amplitude modulation; radiofrequency amplifiers; AM/AM distortion; AM/PM distortion; MQAM; OFDM; adaptive filtering algorithms; convergence properties; digital communications; nonlinear distortion; nonlinear high power amplifiers; predistortion algorithm; probability density functions; unconditionally convergent predistortion; Amplitude modulation; Context; Costs; Digital communication; Digital signal processing; High power amplifiers; Nonlinear distortion; OFDM modulation; Signal processing; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944974

Filename

944974