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...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/68890/ 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 |
| _version_ | 1848856254591533056 |
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| author | Selvadurai, Dinaagaren Mohd Sidek, Roslina Varahram, Pooria Mohd Ali, Borhanuddin |
| author_facet | Selvadurai, Dinaagaren Mohd Sidek, Roslina Varahram, Pooria Mohd Ali, Borhanuddin |
| author_sort | Selvadurai, Dinaagaren |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T11:38:44Z |
| format | Conference or Workshop Item |
| id | upm-68890 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:38:44Z |
| publishDate | 2015 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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 |
| title | 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_short | 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 |
| url | http://psasir.upm.edu.my/id/eprint/68890/ http://psasir.upm.edu.my/id/eprint/68890/ 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 |