Theoretical and Simulation-based Analysis of Terrestrial Interference to LEO Satellite Uplinks

Yastrebova, Anastasia; Angervuori, Ilari; Okati, Niloofar; Vehkaperä, Mikko; Höyhtyä, Marko; Wichman, Risto; Riihonen, Taneli

doi:10.1109/globecom42002.2020.9347980

“…Deterministic and location-based models that have been applied to analyze satellite systems are typically restricted to support simulations. Recently, stochastic geometry analysis that abstracts generic networks into uniform binomial point processes has also been developed to support constellation design and analysis [108] [109]. Analytical methods can lead to very fast results.…”

Section: A Constellation Design and Simulationsmentioning

confidence: 99%

Sustainable Satellite Communications in the 6G Era: A European View for Multilayer Systems and Space Safety

Höyhtyä

¹

,

Boumard

²

,

Yastrebova

³

et al. 2022

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During the New Space era small countries are becoming important players in the space business. While space activities are rapidly increasing globally, it is important to make operations in a sustainable and safe way in order to preserve satellite services for future generations. Unfortunately, the sustainability aspect has been largely overlooked in the existing surveys on space technologies. As a result, in this survey paper, we discuss the multi-layer networking approaches in the 6G era specifically from the sustainability perspective. Moreover, our comprehensive survey includes aspects of some interesting industrial, proprietary, and standardization views. We review the most important regulations and international guidelines and revisit a three-dimensional architecture vision to support the sustainability target for a variety of application areas. We then classify and discuss space safety paradigms that are important sustainability enablers of future satellite communications. These include space traffic management, debris detection, environmental impacts, spectrum sharing, and cyber security aspects. The paper also discusses advances towards a planned European connectivity constellation that could become a third flagship infrastructure along with the Galileo and Copernicus systems. Finally, we define potential research directions into the 2030s.INDEX TERMS Aerospace engineering, Low earth orbit satellites, Radio spectrum management, Spaceborne radar

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“…Stochastic geometry and the results from [38] were then utilized in [39] to obtain the downlink probability of coverage for a LEO network, where satellite gateways act as relays between the satellites and users on Earth. An uplink communication scenario was characterized by considering interfering terrestrial transmitters in [40].…”

Section: A Related Workmentioning

confidence: 99%

Nonhomogeneous Stochastic Geometry Analysis of Massive LEO Communication Constellations

Okati

¹

,

Riihonen

²

2022

IEEE Trans. Commun.

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Providing truly ubiquitous connectivity requires development of low Earth orbit (LEO) satellite Internet, whose theoretical study is lagging behind network-specific simulations. In this paper, we derive analytical expressions for the downlink coverage probability and average data rate of a massive inclined LEO constellation in terms of total interference power's Laplace transform in the presence of fading and shadowing, ergo presenting a stochastic geometry-based analysis. We assume the desired link to experience Nakagami-m fading, which serves to represent different fading scenarios by varying integer m, while the interfering channels can follow any fading model without an effect on analytical tractability. To take into account the inherent non-uniform distribution of satellites across different latitudes, we model the LEO network as a nonhomogeneous Poisson point process with its intensity being a function of satellites' actual distribution in terms of constellation size, the altitude of the constellation, and the inclination of orbital planes. From the numerical results, we observe optimum points for both the constellation altitude and the number of orthogonal frequency channels; interestingly, the optimum user's latitude is greater than the inclination angle due to the presence of fewer interfering satellites. Overall, the presented study facilitates general stochastic evaluation and planning of satellite Internet constellations without specific orbital simulations or tracking data on satellites' exact positions in space.

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“…Stochastic geometry and the results from [35] were then utilized in [36] to obtain the downlink probability of coverage for a LEO network, where satellite gateways act as relays between the satellites and users on Earth. An uplink communication scenario was characterized by considering interfering terrestrial transmitters in [37]. In [38], the coverage and rate of a noise-limited interference-free LEO network were analyzed assuming the satellites' positions are distributed as a nonhomogeneous Poisson point process (NPPP), which models the actual distribution of satellites along different latitudes more precisely by selecting proper intensity for it.…”

Section: A Related Workmentioning

confidence: 99%

Nonhomogeneous Stochastic Geometry Analysis of Massive LEO Communication Constellations

Okati¹,

Riihonen²

2021

Preprint

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0

View full text Add to dashboard Cite

Providing truly ubiquitous connectivity requires development of low Earth orbit (LEO) satellite Internet, whose theoretical study is lagging behind network-specific simulations. In this paper, we derive analytical expressions for the downlink coverage probability and average data rate of a massive inclined LEO constellation in terms of total interference power's Laplace transform in the presence of fading and shadowing, ergo presenting a stochastic geometry-based analysis. We assume the desired link to experience Nakagami-m fading, which serves to represent different fading scenarios by varying integer m, while the interfering channels can follow any fading model without an effect on analytical tractability. To take into account the inherent non-uniform distribution of satellites across different latitudes, we model the LEO network as a nonhomogeneous Poisson point process with its intensity being a function of satellites' actual distribution in terms of constellation size, the altitude of the constellation, and the inclination of orbital planes. From the numerical results, we observe optimum points for both the constellation altitude and the number of orthogonal frequency channels; interestingly, the optimum user's latitude is greater than the inclination angle due to the presence of fewer interfering satellites. Overall, the presented study facilitates general stochastic evaluation and planning of satellite Internet constellations without specific orbital simulations or tracking data on satellites' exact positions in space.

show abstract

Theoretical and Simulation-based Analysis of Terrestrial Interference to LEO Satellite Uplinks

Cited by 20 publications

References 19 publications

Sustainable Satellite Communications in the 6G Era: A European View for Multilayer Systems and Space Safety

Sustainable Satellite Communications in the 6G Era: A European View for Multilayer Systems and Space Safety

Nonhomogeneous Stochastic Geometry Analysis of Massive LEO Communication Constellations

Nonhomogeneous Stochastic Geometry Analysis of Massive LEO Communication Constellations

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