Band-Limited Digital Predistortion with Band-Switching Feedback Architecture for 5G mmWave Power Amplifiers
| Autor: | Yasushi Wada, Soubhik Deb, Noriaki Tawa, Shinichi Hori, Masaaki Tanio, Kazuaki Kunihiro |
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| Rok vydání: | 2018 |
| Předmět: |
Band-pass filter
Orthogonal frequency-division multiplexing Computer science Amplifier Bandwidth (signal processing) 0202 electrical engineering electronic engineering information engineering Electronic engineering 020206 networking & telecommunications 02 engineering and technology Energy consumption Wideband Quadrature amplitude modulation Predistortion |
| Zdroj: | 2018 48th European Microwave Conference (EuMC). |
| DOI: | 10.23919/eumc.2018.8541784 |
| Popis: | This paper presents a novel band-limited digital predistortion (BL-DPD) with band-switching feedback architecture and update procedure for linearization of a wideband 5G mmWave power amplifier (PA). In the proposed BL-DPD, inside and outside of original input signal band in PA output are acquired alternately. This is done while keeping ADC bandwidth same as original input signal bandwidth, thus, avoiding increase in cost and energy consumption. It is demonstrated that the proposed BL-DPD achieves ACLR of −43.6/-42 dBc and EVM < 3% for Watt-class PA operating on a 256 QAM modulated 26 GHz OFDM signal with bandwidth of 800 MHz. |
| Databáze: | OpenAIRE |
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