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학술지 Performance Analysis of Satellite and Terrestrial Spectrum-shared Networks with Directional Antenna
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저자
염정선, 노고산, 정희상, 김일규, 정방철
발행일
202010
출처
ETRI Journal, v.42 no.5, pp.712-720
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2020-0185
협약과제
19HH6900, 위성과 셀룰러간 유연한 연동을 위한 5G 무선네트워크 기술 개발, 김일규
초록
Recently, to make the best use of limited and precious spectrum resources, spectrum sharing between satellite and cellular networks has received much interest. In this study, we mathematically analyze the success probability of a fixed (satellite) earth station (FES) based on a stochastic geometry framework. Both the FES and base stations (BSs) are assumed to be equipped with a directional antenna, and the location and the number of BSs are modeled based on the Poisson point process. Furthermore, an exclusion zone is considered, in which the BSs are prohibited from locating in a circular zone with a certain radius around the FES to protect it from severe interference from the cellular BSs. We validate the analytical results on the success probability of the cognitive satellite-terrestrial network with directional antennas by comparing it using extensive computer simulations and show the effect of the exclusion zone on the success probability at the FES. It is shown that the exclusion zone-based interference mitigation technique significantly improves the success probability as the exclusion zone increases.
키워드
cognitive satellite-terrestrial network, poisson point process, spectrum sharing, stochastic geometry, success probability
KSP 제안 키워드
Cellular networks, Computer simulation(MC and MD), Directional Antenna, Earth station, Exclusion zone, Interference mitigation, Performance analysis, Poisson Point Process(PPP), Stochastic geometry, Success probability, Zone-Based
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