Multi-carrier LINC amplifier calibration by min-minimum criterion

Author

Xinping Huang ; Caron, Michel

Author_Institution

Commun. Res. Centre Canada, Ottawa, ON, Canada

fYear

2013

fDate

19-23 May 2013

Firstpage

1135

Lastpage

1138

Abstract

In this paper, we briefly introduce the LINC amplifier, and discuss its mismatch issues that reduce its linearity and degrade its performance. A calibration approach for the LINC amplifier is proposed for multi-carrier system applications such as OFDM systems. The technique estimates the LINC amplifier calibration coefficient from the LINC amplifier output signal envelope by using a min-minimum criterion. Computer simulations are carried out to validate the proposed LINC amplifier calibration approach. It is demonstrated that the calibration coefficient can be accurately determined, and the mismatch compensated, by the proposed approach, so that the LINC amplifier performance can be significantly improved.

Keywords

amplifiers; calibration; LILAC amplifier calibration coefficient; LILAC amplifier output signal; LILAC amplifier performance; OFDM systems; calibration approach; min-minimum criterion; multicarrier LINC amplifier calibration; Calibration; Computational modeling; Computer simulation; Distortion measurement; Gain; OFDM; Power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2013 IEEE International Symposium on

Conference_Location

Beijing

ISSN

0271-4302

Print_ISBN

978-1-4673-5760-9

Type

conf

DOI

10.1109/ISCAS.2013.6572051

Filename

6572051