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POWER AMPLIFIER MODELING AND POWER AMPLIFIER PREDISTORTION IN OFDM SYSTEM

Tran Duc Tan 1
Volume & Issue: Vol. 11 No. 2 (2008) | Page No.: 33-41 | DOI: 10.32508/stdj.v11i2.2606
Published: 2008-02-29

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This article is published with open access by Viet Nam National University, Ho Chi Minh City, Viet Nam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Abstract

This paper presents a baseband predistorter to be used in OFDM systems operating with a nonlinear high power amplifier (HPA). Key features of the predistorter reside in the use of the HPA inverse structure as nonlinear distortion compensator. The performance of the compensated system is analyzed by simulations in an AWGN environment. The receiver also needs furthermore an equalizer in order to combat the distorsion effect.

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