Nonlinear Distortion Cancellation in a LINC Transmitter using Genetic Algorithms

Author

Garcia, Paloma ; De Mingo, Jesús ; Valdovinos, Antonio

Author_Institution

Aragon Inst. Eng. Res., Zaragoza Univ.

fYear

2005

fDate

7-7 Sept. 2005

Firstpage

606

Lastpage

610

Abstract

The linear amplification using nonlinear components (LINC) technique is a well-known power amplifier linearization method to reduce adjacent channel interference in a nonconstant envelope modulation system. Its major drawback is the inherited sensitivity to gain and phase imbalances between the two amplifier branches. This work describes a method to correct gain and phase imbalances in LINC transmitters. The proposed method is based on genetic algorithms and it obtains a suitable solution for complex coefficients to adjust gain and phase imbalances. The method functionality has been verified by means of simulation

Keywords

adjacent channel interference; genetic algorithms; interference suppression; mobile radio; nonlinear distortion; power amplifiers; radio transmitters; radiofrequency amplifiers; telecommunication channels; adjacent channel interference reduction; genetic algorithms; linear amplification using nonlinear components; nonconstant envelope modulation system; nonlinear distortion cancellation; phase imbalances; power amplifier linearization method; Frequency conversion; Genetic algorithms; Genetic engineering; Interchannel interference; Mobile communication; Nonlinear distortion; Particle separators; Power amplifiers; Power engineering and energy; Radio transmitters; Amplifier linearization; LINC transmitter; genetic algorithm; imbalances correction;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication Systems, 2005. 2nd International Symposium on

Conference_Location

Siena

Print_ISBN

0-7803-9206-X

Type

conf

DOI

10.1109/ISWCS.2005.1547775

Filename

1547775