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A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers

A new companding function is proposed for non-uniform indexation of a quadratically interpolated LUT predistorter used in digital predistortion under wideband signals. In digital predistortion, lookup table (LUT) predistorters are the most frequently used technique in order to compensate the non-lin...

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Main Authors: Selvadurai, Dinaagaren, Mohd Sidek, Roslina, Varahram, Pooria, Mohd Ali, Borhanuddin
Format: Conference or Workshop Item
Language:English
Published: IEEE 2015
Online Access:http://psasir.upm.edu.my/id/eprint/68890/1/A%20robust%20non-uniform%20indexation%20of%20a%20quadratically%20interpolated%20LUT%20predistorter%20for%20RF%20power%20amplifiers.pdf
http://psasir.upm.edu.my/id/eprint/68890/
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spelling my.upm.eprints.688902019-06-11T02:02:44Z http://psasir.upm.edu.my/id/eprint/68890/ A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers Selvadurai, Dinaagaren Mohd Sidek, Roslina Varahram, Pooria Mohd Ali, Borhanuddin A new companding function is proposed for non-uniform indexation of a quadratically interpolated LUT predistorter used in digital predistortion under wideband signals. In digital predistortion, lookup table (LUT) predistorters are the most frequently used technique in order to compensate the non-linear effects of a power amplifier. In this paper, a new companding function of a quadratically interpolated LUT predistorter is designed in order to reduce the approximation errors of quadratic interpolation which causes the intermodulation (IMD) distortion. Simulation result shows that the proposed technique provides a better rejection of intermodulation distortion compared to quadratic interpolated LUT, linear interpolated LUT and conventional non-linear interpolated LUT predistorters respectively. IEEE 2015 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/68890/1/A%20robust%20non-uniform%20indexation%20of%20a%20quadratically%20interpolated%20LUT%20predistorter%20for%20RF%20power%20amplifiers.pdf Selvadurai, Dinaagaren and Mohd Sidek, Roslina and Varahram, Pooria and Mohd Ali, Borhanuddin (2015) A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers. In: 2015 IEEE 12th Malaysia International Conference on Communications (MICC 2015), 23-25 Nov. 2015, Kuching, Sarawak, Malaysia. (pp. 329-332). 10.1109/MICC.2015.7725457
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A new companding function is proposed for non-uniform indexation of a quadratically interpolated LUT predistorter used in digital predistortion under wideband signals. In digital predistortion, lookup table (LUT) predistorters are the most frequently used technique in order to compensate the non-linear effects of a power amplifier. In this paper, a new companding function of a quadratically interpolated LUT predistorter is designed in order to reduce the approximation errors of quadratic interpolation which causes the intermodulation (IMD) distortion. Simulation result shows that the proposed technique provides a better rejection of intermodulation distortion compared to quadratic interpolated LUT, linear interpolated LUT and conventional non-linear interpolated LUT predistorters respectively.
format Conference or Workshop Item
author Selvadurai, Dinaagaren
Mohd Sidek, Roslina
Varahram, Pooria
Mohd Ali, Borhanuddin
spellingShingle Selvadurai, Dinaagaren
Mohd Sidek, Roslina
Varahram, Pooria
Mohd Ali, Borhanuddin
A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
author_facet Selvadurai, Dinaagaren
Mohd Sidek, Roslina
Varahram, Pooria
Mohd Ali, Borhanuddin
author_sort Selvadurai, Dinaagaren
title A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
title_short A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
title_full A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
title_fullStr A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
title_full_unstemmed A robust non-uniform indexation of a quadratically interpolated LUT predistorter for RF power amplifiers
title_sort robust non-uniform indexation of a quadratically interpolated lut predistorter for rf power amplifiers
publisher IEEE
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/68890/1/A%20robust%20non-uniform%20indexation%20of%20a%20quadratically%20interpolated%20LUT%20predistorter%20for%20RF%20power%20amplifiers.pdf
http://psasir.upm.edu.my/id/eprint/68890/
_version_ 1643839336979890176
score 13.211869

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