The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Interference Analysis of Radio-Relay Stations Affected by HAPS System for Frequency Sharing

주파수 공유를 위한 HAPS 시스템이 무선 중계국에 미치는 간섭 영향 분석

  • 박종민 (한국전자통신연구원 광대역무선통신연구부) ;
  • 구본준 (한국전자통신연구원 광대역무선통신연구부) ;
  • 안도섭 (한국전자통신연구원 광대역무선통신연구부) ;
  • 김봉석 (군산대학교 전자정보공학부) ;
  • 강영흥 (군산대학교 전자정보공학부)
  • Published : 2002.07.01
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Abstract

In WRC-2000, Resolution 734 was adopted to study the use of high altitude platform station(HAPS) operating in the bands above 30GHz. Therefore, frequency sharing feasibility between a new HAPS systems and an existing terrestrial fixed-service(FS) system should be analyzed primarily. In this paper, interference effects from the HAPS system into the radio-relay station are analyzed in terms of two cases; one is the interference distribution from the power-flux density(PFD) of HAPS airships, and the other the interference power from the ground stations. In conclusion, the new PFD criteria different from the exiting satellite system should be required, and the coordinated distance between the HAPS nadir and the radio-relay station should be 60km ∼ 253km for P$\sub$HG/ = -50dBW/MHz of transmitting power spectral density to share the new HAPS system into the existing FS system.

WRC-2000에서 3GHz 이상의 대역에서 운영할 성층권 통신 시스템(HAPS)의 이용에 관한 연구로 Resolution 734가 채택되었다. 이에 새로운 HAPS 시스템과 기존의 지구상의 고정 서비스간의 공유 가능성이 먼저 분석되어야 한다. 본 논문에서는 HAPS 시스템이 무선 중계국에 미치는 간섭 영향을 두 가지의 경우로 나누어서 분석한다. 한가지는 HAPS 비행선의 PFD(Power Flux Density)에 의한 간섭이며, 다른 한가지는 HAPS의 지구국으로부터의 간섭영향이다. 분석 결과 위성 시스템과는 다른 새로운 PFD 기준 설정이 필요하며, 기존의 FS 시스템과 새로운 HAPS 시스템의 공유를 위한 HAPS nadir 사이의 조정거리는 전송전력밀도가 -50dBW/MHz 일 때 최고 253km에서 최저 60km정도가 요구된다.

Keywords

References

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