Interference Analysis Between Satellites for LEO Satellite Constellation Networks 


Vol. 47,  No. 8, pp. 1051-1054, Aug.  2022
10.7840/kics.2022.47.8.1051


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  Abstract

The frequency bands for satellite communications become a limited resource in that a great number of Low Earth Orbit(LEO) satellites will be utilized to provide global internet services. With this, the spectrum sharing with adjacent satellites is of great interest. In this article, we analyze the downlink interference with the number and altitude of satellites deployed in a single orbit using the same frequency bands with the MATLAB Satellites Communications Toolbox. Analyzing the interference scenario, we check the ratio of the time when the Carrier to Interference plus Noise Ratio(CINR) falls short of the reference in the time when the target satellite and ground station are connected. The interference signal power is more affected by the reduction of the offset angle than by the increase of the path loss due to the increase in altitude at an altitude of 300-1,000 km. However, at higher altitudes than 1,000 km, it is more affected by the increase in path loss. With this, we also demonstrate that the maximum number of satellites that can be deployed at an altitude of 340 and 550 km in operation on Starlink is 29 and 22 respectively, and 23 on an altitude of 1,200 km scheduled to operate on OneWeb.

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  Cite this article

[IEEE Style]

J. Ryu, J. Park, C. Jeon, S. Han, W. Shin, "Interference Analysis Between Satellites for LEO Satellite Constellation Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 8, pp. 1051-1054, 2022. DOI: 10.7840/kics.2022.47.8.1051.

[ACM Style]

Jaehak Ryu, Juha Park, Chaeyeon Jeon, Sangmin Han, and Wonjae Shin. 2022. Interference Analysis Between Satellites for LEO Satellite Constellation Networks. The Journal of Korean Institute of Communications and Information Sciences, 47, 8, (2022), 1051-1054. DOI: 10.7840/kics.2022.47.8.1051.

[KICS Style]

Jaehak Ryu, Juha Park, Chaeyeon Jeon, Sangmin Han, Wonjae Shin, "Interference Analysis Between Satellites for LEO Satellite Constellation Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 8, pp. 1051-1054, 8. 2022. (https://doi.org/10.7840/kics.2022.47.8.1051)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880