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S. S. Krishna Chaitanya Bulusu, S. Zampato, P. Susarla, N. Tervo, A. Pärssinen and O. Sílven, "Hardware-friendly Power Amplifier Linearization in Next-Generation Broadcasting Systems," 2023 IEEE International Mediterranean Conference on Communications and Networking (MeditCom), Dubrovnik, Croatia, 2023, pp. 299-304, doi: 10.1109/MeditCom58224.2023.10266599.

Hardware-friendly power amplifier linearization in next-generation broadcasting systems

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Author: Bulusu, S. S. Krishna Chaitanya1; Zampato, Silvia2; Susarla, Praneeth3;
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu, Oulu FI-90014, Finland
2Information Engineering Department (DEI), University of Padua, 35131 Padua, Italy
3Center for Machine Vision and Signal Analysis (CMVS), University of Oulu, Oulu FI-90014, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe20231013139996
Language: English
Published: Institute of Electrical and Electronics Engineers, 2023
Publish Date: 2023-10-13
Description:

Abstract

It is essential to mitigate power amplifier (PA) nonlinear (NL) effects to achieve energy-efficient radio communications. To restore the transmit signal quality, digital pre-distortion (DPD) is widely used. Recently, fast convergence DPD (FC-DPD) which offers good PA linearization has been proposed for next-generation broadcasting systems. However, it suffers from complexity issues and this paper addresses that drawback and we propose a low-complex version to make it hardware-friendly. We achieve significant complexity reduction by simplifying the Jacobian computation needed in the FC-DPD algorithm. This scheme can be extended to any memory-less PA model or a measured PA fitted to a polynomial model. We have provided proof that the proposed technique has linear complexity and the simulation results indicate that the proposed scheme achieves performance close to the FC-DPD algorithm. This method can be applied to other transmission systems as well.

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ISBN: 979-8-3503-3373-2
ISBN Print: 979-8-3503-3374-9
Pages: 299 - 304
DOI: 10.1109/meditcom58224.2023.10266599
OADOI: https://oadoi.org/10.1109/meditcom58224.2023.10266599
Host publication: 2023 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)
Conference: IEEE International Mediterranean Conference on Communications and Networking
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
ATSC 3.0
DVB-T2
digital pre-distortion (DPD)
energy efficiency
green communications
Article
Funding: This work was supported in part by the Academy of Finland projects 6G Flagship (grant number 346208), Profi5 funding for Mathematics and AI: data insight for high-dimensional dynamics (HiDyn) (grant number 326291), Jenny-Antti Wihuri Foundation (grant number 220380), and Ing. Aldo Gini Foundation.
Academy of Finland Grant Number: 346208
Detailed Information: 346208 (Academy of Finland Funding decision)
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