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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2015
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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 |
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| 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 |
13.250246 |