GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power
While digital predistortion (DPD) usually targets only the linearity performance of the radio–frequency (RF) power amplifier (PA), this work addresses more than a single PA performance metric exploiting a multi-objective optimization approach. We present a predistorer learning procedure based on a c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/3/244 |
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| author | Mattia Mengozzi Gian Piero Gibiino Alberto M. Angelotti Corrado Florian Alberto Santarelli |
| author_facet | Mattia Mengozzi Gian Piero Gibiino Alberto M. Angelotti Corrado Florian Alberto Santarelli |
| author_sort | Mattia Mengozzi |
| collection | DOAJ |
| description | While digital predistortion (DPD) usually targets only the linearity performance of the radio–frequency (RF) power amplifier (PA), this work addresses more than a single PA performance metric exploiting a multi-objective optimization approach. We present a predistorer learning procedure based on a constrained optimization algorithm that maximizes the RF output power, while guaranteeing a prescribed linearity level, i.e., a maximum normalized mean square error (NMSE) or adjacent-channel power ratio (ACPR). Experimental results on a Gallium Nitride (GaN) PA show that the proposed approach outperforms the classical indirect learning architecture (ILA), yet using the same predistorter structure with predetermined nonlinearity and memory orders. |
| first_indexed | 2024-03-09T04:02:15Z |
| format | Article |
| id | doaj.art-2d7f1da0d043470787b6ac95a496fc16 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T04:02:15Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-2d7f1da0d043470787b6ac95a496fc162023-12-03T14:11:39ZengMDPI AGElectronics2079-92922021-01-0110324410.3390/electronics10030244GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output PowerMattia Mengozzi0Gian Piero Gibiino1Alberto M. Angelotti2Corrado Florian3Alberto Santarelli4Department Electrical, Electronic, and Information Engineering (DEI) ‘G. Marconi’, University of Bologna, 40126 Bologna, ItalyDepartment Electrical, Electronic, and Information Engineering (DEI) ‘G. Marconi’, University of Bologna, 40126 Bologna, ItalyDepartment Electrical, Electronic, and Information Engineering (DEI) ‘G. Marconi’, University of Bologna, 40126 Bologna, ItalyDepartment Electrical, Electronic, and Information Engineering (DEI) ‘G. Marconi’, University of Bologna, 40126 Bologna, ItalyDepartment Electrical, Electronic, and Information Engineering (DEI) ‘G. Marconi’, University of Bologna, 40126 Bologna, ItalyWhile digital predistortion (DPD) usually targets only the linearity performance of the radio–frequency (RF) power amplifier (PA), this work addresses more than a single PA performance metric exploiting a multi-objective optimization approach. We present a predistorer learning procedure based on a constrained optimization algorithm that maximizes the RF output power, while guaranteeing a prescribed linearity level, i.e., a maximum normalized mean square error (NMSE) or adjacent-channel power ratio (ACPR). Experimental results on a Gallium Nitride (GaN) PA show that the proposed approach outperforms the classical indirect learning architecture (ILA), yet using the same predistorter structure with predetermined nonlinearity and memory orders.https://www.mdpi.com/2079-9292/10/3/244digital predistortionmulti-objective optimizationpower amplifierlinearization techniques |
| spellingShingle | Mattia Mengozzi Gian Piero Gibiino Alberto M. Angelotti Corrado Florian Alberto Santarelli GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power Electronics digital predistortion multi-objective optimization power amplifier linearization techniques |
| title | GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power |
| title_full | GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power |
| title_fullStr | GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power |
| title_full_unstemmed | GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power |
| title_short | GaN Power Amplifier Digital Predistortion by Multi-Objective Optimization for Maximum RF Output Power |
| title_sort | gan power amplifier digital predistortion by multi objective optimization for maximum rf output power |
| topic | digital predistortion multi-objective optimization power amplifier linearization techniques |
| url | https://www.mdpi.com/2079-9292/10/3/244 |
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