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An efficient predistorter design for compensating nonlinear memory high power amplifier

An efficient predistorter design for compensating nonlinear memory high power amplifier
An efficient predistorter design for compensating nonlinear memory high power amplifier
This contribution applies digital predistorter to compensate distortions caused by memory high power amplifiers (HPAs) which exhibit true output saturation characteristics. Particle swarm optimization is first implemented to identify the Wiener HPA’s parameters. The estimated Wiener HPA model is then directly used to design the predistorter. The proposed digital predistorter solution is attractive owing to its low on-line computational complexity, small memory units required and simple VLSI hardware structure implementation. Moreover, the designed predistorter is capable of successfully compensating serious nonlinear distortions and memory effects caused by the memory HPA operating in the output saturation region. Simulation results obtained are presented to demonstrate the effectiveness of this novel digital predistorter design.
856-865
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80

Chen, Sheng (2011) An efficient predistorter design for compensating nonlinear memory high power amplifier. IEEE Transactions on Broadcasting, 57 (4), 856-865.

Record type: Article

Abstract

This contribution applies digital predistorter to compensate distortions caused by memory high power amplifiers (HPAs) which exhibit true output saturation characteristics. Particle swarm optimization is first implemented to identify the Wiener HPA’s parameters. The estimated Wiener HPA model is then directly used to design the predistorter. The proposed digital predistorter solution is attractive owing to its low on-line computational complexity, small memory units required and simple VLSI hardware structure implementation. Moreover, the designed predistorter is capable of successfully compensating serious nonlinear distortions and memory effects caused by the memory HPA operating in the output saturation region. Simulation results obtained are presented to demonstrate the effectiveness of this novel digital predistorter design.

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Published date: December 2011
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 273030
URI: http://eprints.soton.ac.uk/id/eprint/273030
PURE UUID: 901261d8-0518-4737-820d-a9112c2983e2

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Date deposited: 22 Nov 2011 09:40
Last modified: 09 Dec 2019 20:08

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