Downlink Coverage and Rate Analysis of Low Earth Orbit Satellite Constellations Using Stochastic Geometry

Niloofar Okati, Taneli Riihonen, Dani Korpi, Ilari Angervuori, Risto Wichman

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

Abstrakti

As low Earth orbit (LEO) satellite communication systems are gaining increasing popularity, new theoretical methodologies are required to investigate such networks’ performance at large. This is because deterministic and location-based models that have previously been applied to analyze satellite systems are typically restricted to support simulations only. In this paper, we derive analytical expressions for the downlink coverage probability and average data rate of generic LEO networks, regardless of the actual satellites’ locality and their service area geometry. Our solution stems from stochastic geometry, which abstracts the generic networks into uniform binomial point processes. Applying the proposed model, we then study the performance of the networks as a function of key constellation design parameters. Finally, to fit the theoretical modeling more precisely to real deterministic constellations, we introduce the effective number of satellites as a parameter to compensate for the practical uneven distribution of satellites on different latitudes. In addition to deriving exact network performance metrics, the study reveals several guidelines for selecting the design parameters for future massive LEO constellations, e.g., the number of frequency channels and altitude.
AlkuperäiskieliEnglanti
Artikkeli9079921
Sivut5120-5134
JulkaisuIEEE Transactions on Communications
Vuosikerta68
Numero8
Varhainen verkossa julkaisun päivämäärä2020
DOI - pysyväislinkit
TilaJulkaistu - elokuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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