ETRI Journal

  • 제42권5호
  • /
  • Pages.712-720
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  • 2020
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Performance analysis of satellite and terrestrial spectrum-shared networks with directional antenna

  • Yeom, Jeong Seon (Department of Electronics Engineering, Chungnam National University) ;
  • Noh, Gosan (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) ;
  • Chung, Heesang (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) ;
  • Kim, Ilgyu (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) ;
  • Jung, Bang Chul (Department of Electronics Engineering, Chungnam National University)
  • 투고 : 2020.04.28
  • 심사 : 2020.08.24
  • 발행 : 2020.11.16
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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.

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참고문헌

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