Transfer Functions and Linear Distortions in Ultra-Wideband Channels Faded by Rain in GeoSurf Satellite Constellations

Emilio Matricciani () and Carlo Riva
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Emilio Matricciani: Dipartimento di Elettronica, Bioingegneria e Informazione, Politecnico di Milano, 20133 Milan, Italy
Carlo Riva: Dipartimento di Elettronica, Bioingegneria e Informazione, Politecnico di Milano, 20133 Milan, Italy

Future Internet, 2023, vol. 15, issue 1, 1-21

Abstract: Because of rain attenuation, the equivalent baseband transfer function of large bandwidth radio-links will not be ideal. We report the results concerning radio links to/from satellites orbiting in GeoSurf satellite constellations located at Spino d’Adda, Prague, Madrid, and Tampa, which are all sites in different climatic regions. By calculating rain attenuation and phase delay with the Synthetic Storm Technique, we have found that in a 10-GHz bandwidth centered at 80 GHz (W-Band)—to which we refer to as “ultra-wideband-, both direct and orthogonal channels will introduce significant amplitude and phase distortions, which increase with rain attenuation. Only “narrow-band” channels (100~200 MHz) will not be affected. The ratio between the probability of bit error with rain attenuation and the probability of bit error with no rain attenuation increases with rain attenuation. The estimated loss in the signal-to-noise ratio can reach 3~4 dB. All results depend on the site, Tampa being the worst. To confirm these findings, future work will need a full Monte Carlo digital simulation.

Keywords: baseband; GeoSurf constellation; linear distortions; passband; phase delay; rain attenuation; synthetic storm technique (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2023
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