University of Oulu

N. Tervo, M. E. Leinonen, J. Aikio, T. Rahkonen and A. Pärssinen, "Analyzing the Effects of PA Variations on the Performance of Phased Array Digital Predistortion," 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Bologna, Italy, 2018, pp. 215-219. doi: 10.1109/PIMRC.2018.8580706

Analyzing the effects of PA variations on the performance of phased array digital predistortion

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Author: Tervo, Nuutti1; Leinonen, Marko E.1; Aikio, Janne1;
Organizations: 1Faculty of Information Technology and Electrical Engineering (ITEE), University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2018
Publish Date: 2019-01-16


This paper shows how digital predistortion of a phased array can benefit from the parametric variations over parallel power amplifiers (PAs). Different antenna configurations are simulated by varying the PA input drive levels by the Monte-Carlo method. The error vector magnitude (EVM) at the steering angle and total radiated adjacent channel power ratio (TRACPR) are used as performance metrics. The simulation results indicate that array predistortion can benefit from the variations between the PAs to improve the EVM significantly. However, at the same time, the TRACPR performance is reduced. This gives a new trade-off to balance between in-band and out-off-band distortion in the fifth generation beamforming systems.

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Series: IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications workshops
ISSN: 2166-9570
ISSN-E: 2166-9589
ISSN-L: 2166-9570
ISBN: 978-1-5386-6009-6
ISBN Print: 978-1-5386-6010-2
Pages: 215 - 219
DOI: 10.1109/PIMRC.2018.8580706
Host publication: 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Conference: Annual International Symposium on Personal, Indoor and Mobile Radio Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been supported by Infotech Oulu Doctoral Programme, Finnish Funding Agency for Technology and Innovation (Tekes), Nokia Oyj, Esju Oy and CoreHW Oy. Furthermore, the research has been financially supported by Academy of Finland 6Genesis Flagship (grant 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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