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Application of 5G new radio for satellite links with low peak-to-average power ratios
International Journal of Satellite Communications and Networking ( IF 1.7 ) Pub Date : 2020-09-30 , DOI: 10.1002/sat.1378
Harri Saarnisaari 1 , Carlos Lima 1
Affiliation  

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.

中文翻译:

5G新无线电在低峰均功率比卫星链路中的应用

本文的目的是考虑 5G 新无线电 (NR) 在卫星链路上的可行性,也称为非地面网络 (NTN)。大传播延迟和多普勒频移是挑战,例如 5G NR 信号的高峰均功率比 (PAPR),因为卫星系统希望以非常低的功率放大器回退值运行。本文简要总结了文献和标准化在初始同步和上行链路随机接入过程中取得的进展。此外,该论文通过展示2 来解释低 PAPR 和功率放大器回退与参考符号密度之间的关系是什么-dB 回退值可以使用足够的参考符号密度来获得。最后,列出了需要澄清的未决问题。有趣的是,这些问题的所有解决方案并不意味着标准的改变,而是供应商和运营商的适当行动。
更新日期:2020-09-30
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