Comparison between digital and analog predistortion for satellite communications

Author

Alasady, H. ; Boutros, R. ; Ibnkahla, M.

Author_Institution

Dept. of Eletrical & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada

Volume

1

fYear

2003

fDate

4-7 May 2003

Firstpage

183

Abstract

Satellite communication channels are equipped with high power amplifier (HPA). The drawback of this amplifier is that it is highly nonlinear, which makes the use of highly bandwidth-efficient modulation techniques unpractical. There are several techniques that are used in the literature that reduces the effect of the nonlinearity without the need to backoff; these include digital and analog predistortion. This paper presents a comparison between these two techniques, as well as the advantages and disadvantages of each scheme.

Keywords

neural nets; nonlinear distortion; power amplifiers; satellite communication; telecommunication channels; analog predistortion; bandwidth-efficient modulation techniques; digital predistortion; high power amplifier; neural networks; satellite communication channels; Artificial satellites; Constellation diagram; High power amplifiers; Neural networks; Nonlinear distortion; Power amplifiers; Predistortion; Probability; Satellite communication; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7781-8

Type

conf

DOI

10.1109/CCECE.2003.1226373

Filename

1226373