Linearizing Active Antenna Arrays: Digital Predistortion Method and Measurements

Alberto Brihuega Garcia, Mahmoud Abdelaziz, Matias Turunen, Thomas Eriksson, Lauri Anttila, Mikko Valkama

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

1 Sitaatiot (Scopus)
9 Lataukset (Pure)

Abstrakti

In this paper, we provide a novel framework for efficient digital predistortion (DPD) based linearization of active antenna arrays with multiple and mutually different nonlinear power amplifiers. The proposed method builds on the use of a combined feedback signal essentially characterizing the observable nonlinear distortion at the receiving end. The proposed method is validated with extensive over-the-air RF measurements on a 64-element active antenna array transmitter operating at 28 GHz carrier frequency and transmitting a 200 MHz wide 5G New Radio (NR) waveform. The obtained results demonstrate the excellent linearization capabilities of the proposed solution, which allows for a very efficient implementation in practical systems.
AlkuperäiskieliEnglanti
OtsikkoProceedings 2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond
KustantajaIEEE
Sivumäärä3
ISBN (elektroninen)978-1-7281-3143-6
DOI - pysyväislinkit
TilaJulkaistu - 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond -
Kesto: 15 elok. 201916 elok. 2019

Conference

ConferenceIEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond
Ajanjakso15/08/1916/08/19

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