Application of 5G new radio for satellite links with low peak‐to‐average power ratios
|Author:||Saarnisaari, Harri1; de Lima, Carlos Morais1|
1Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020111790829
John Wiley & Sons,
|Publish Date:|| 2021-09-30
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.
International journal of satellite communications and networking
|Pages:||1 - 10|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
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 (Academy of Finland Funding decision)
© 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.