Abstract
This paper presents an advanced yet simple digital pre-distortion (DPD) technique for digital I/Q transmitters (DTXs). Exploiting the I/Q orthogonality, an effective 2×1-D DPD procedure is proposed to bypass the exhaustive 2-D search of the entire constellation diagram. Utilizing this technique, a four-way Doherty DTX is linearized. Measurement results demonstrate that for a non-contiguous six-carrier OFDM-QAM signal with aggregated bandwidth of 150MHz, the ACPR is better than -47.3dBc, and EVM is better than -41/-40dB for channel-1/-6, respectively.
Original language | English |
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Title of host publication | 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 |
Publisher | IEEE |
Pages | 787-790 |
Number of pages | 4 |
ISBN (Electronic) | 9798350347647 |
DOIs | |
Publication status | Published - 2023 |
Event | 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 - San Diego, United States Duration: 11 Jun 2023 → 16 Jun 2023 |
Publication series
Name | IEEE MTT-S International Microwave Symposium Digest |
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Volume | 2023-June |
ISSN (Print) | 0149-645X |
Conference
Conference | 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 |
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Country/Territory | United States |
City | San Diego |
Period | 11/06/23 → 16/06/23 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- constellation
- Digital pre-distortion
- digital transmitter
- DPD
- mapping
- RF-DAC