University of Oulu

Saarnisaari, H, de Lima, C. Application of 5G new radio for satellite links with low peak‐to‐average power ratios. Int J Satell Commun Network. 2020; 1– 10. https://doi.org/10.1002/sat.1378

Application of 5G new radio for satellite links with low peak‐to‐average power ratios

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Author: Saarnisaari, Harri1; de Lima, Carlos Morais1
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2020111790829
Language: English
Published: John Wiley & Sons, 2020
Publish Date: 2021-09-30
Description:

Summary

The aim of the paper is to consider feasibility of 5G new radio (NR) over satellite links also known as nonterrestrial networks (NTNs). Large propagation delay and Doppler frequency shift are challenges like is high peak‐to‐average power ratio (PAPR) of 5G NR signal because satellite systems would like to operate at very low‐power amplifier back‐off values. This paper provides a brief summary of progress made in initial synchronization and uplink random access process both in the literature and standardization. Furthermore, the paper explains what is the relationship between low PAPR and power amplifier back‐off and the density of reference symbols by showing that 2‐dB back‐off values can be attained using sufficient reference symbol density. Finally, open issues that need clarification are listed. Interestingly, all solutions to these problems do not mean changes in the standard but proper actions from vendors and operators.

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Series: International journal of satellite communications and networking
ISSN: 1542-0973
ISSN-E: 1542-0981
ISSN-L: 1542-0973
Volume: Early Access
Issue: Early Access
Pages: 1 - 10
DOI: 10.1002/sat.1378
OADOI: https://oadoi.org/10.1002/sat.1378
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Funding: This work was performed in Satellite and Terrestrial Network for 5G (SaT5G) project in EU H2020 program, grand agreement no. 761413 and Academy of Finland 6Genesis Flagship (grant No. 318927).
EU Grant Number: (761413) SaT5G - Satellite and Terrestrial Network for 5G
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: © 2020 John Wiley & Sons, Ltd. This is the peer reviewed version of the following article: Saarnisaari, H, de Lima, C. Application of 5G new radio for satellite links with low peak‐to‐average power ratios. Int J Satell Commun Network. 2020; 1– 10. https://doi.org/10.1002/sat.1378, which has been published in final form at https://doi.org/10.1002/sat.1378]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.