Hofmann, Christian A.; Storek, Kai-Uwe; Knopp, Andreas
Document type:
Konferenzbeitrag / Conference Paper
Title:
Impact of Phase Noise and Oscillator Stability on Ultra-Narrow-Band-IoT Waveforms for Satellite
Title of conference publication:
ICC 2021 - IEEE International Conference on Communications
Organizer (entity):
IEEE
Conference title:
IEEE International Conference on Communications (ICC) (2021, Online)
Venue:
Online
Year of conference:
2021
Date of conference beginning:
14.06.2021
Date of conference ending:
23.06.2021
Place of publication:
Piscataway, NJ
Publisher:
IEEE
Year:
2021
Language:
Englisch
Subject:
Satellite Communications
Abstract:
It has been shown that ultra-narrow-band (uNB) massive machine type communication using very compact devices with direct access to satellites is possible at ultra low rate. This enables global ubiquitous coverage for terminals without terrestrial service in the Internet of Remote Things and provides access to any satellite up to the the geostationary earth orbit. The lower data rate for waveforms providing uNB communication is set by the stability and the phase noise of the applied oscillators. In this paper we analyze the physical layer of two candidate waveforms, which are LoRa and Unipolar Coded Chirp-Spread Spectrum (UCSS) with respect to phase noise and oscillator frequency drifts. It is figured out that UCSS is more robust against linear frequency drifts, which is the main source of error for uNB transmissions. «
It has been shown that ultra-narrow-band (uNB) massive machine type communication using very compact devices with direct access to satellites is possible at ultra low rate. This enables global ubiquitous coverage for terminals without terrestrial service in the Internet of Remote Things and provides access to any satellite up to the the geostationary earth orbit. The lower data rate for waveforms providing uNB communication is set by the stability and the phase noise of the applied oscillators.... »