A digital predistortion method based on nonuniform memory polynomial model using interpolated LUT
| Autor: | Xiaowen Feng, Yide Wang, Bruno Feuvrie, Anne-Sophie Descamps |
|---|---|
| Přispěvatelé: | Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nantes Université (NU)-Université de Rennes 1 (UR1) |
| Rok vydání: | 2015 |
| Předmět: |
Computational complexity theory
Computer science power amplifier Amplifier 020208 electrical & electronic engineering 020206 networking & telecommunications 02 engineering and technology Signal Predistortion look-up table nonuniform memory polynomial [SPI]Engineering Sciences [physics] digital predistortion Linearization Lookup table 0202 electrical engineering electronic engineering information engineering Electronic engineering Baseband Quadrature amplitude modulation |
| Zdroj: | IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR2015) IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR2015), Jan 2015, San Diego, CA, United States. paper#167, ⟨10.1109/pawr.2015.7139201⟩ |
| DOI: | 10.1109/pawr.2015.7139201 |
| Popis: | This paper presents a baseband Digital PreDistortion (DPD) method for Power Amplifier (PA) linearization. It is based on the nonuniform Memory Polynomial (MP) model with direct learning architecture. The interpolated Look-Up Table (LUT) is adopted in the predistorter, to replace a part of the computational operations. The complex predistorted signal is calculated by two parts: one is the amplitude of the predistorted signal which is obtained by a linear-interpolation LUT; the other is the phase of the predistorted signal which is obtained by a quadratic-interpolation LUT. The proposed method makes a good tradeoff between the computational complexity, table size and linearization performance. It is validated on a test bench using a PA ZFL- 2500 driven by a 64QAM modulated signal. Index Terms—power amplifier, digital |
| Databáze: | OpenAIRE |
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