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

Citation

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).

Abstract

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.

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Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1109/MICC.2015.7725457
Publisher:	IEEE
Keywords:	Digital predistortion (DPD); Linearization; Lookup table (LUT); Power amplifier (PA)
Depositing User:	Nabilah Mustapa
Date Deposited:	11 Jun 2019 02:02
Last Modified:	11 Jun 2019 02:02
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/MICC.2015.7725457
URI:	http://psasir.upm.edu.my/id/eprint/68890
Statistic Details:	View Download Statistic

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