본 논문에서는 성층권 통신망(HAPS)과 기존 위성망 및 지상망과의 원활한 공유를 위해서 진행되고 있는 HAPS 시스템의 간섭경감기법에 관한 연구 동향을 분석한다. 이를 위해서 2006년 6월 27일부터 7월 5일까지 개최된 ITU-R WP9B 회의를 통하여 논의된 주요 결과들을 중심으로 살펴보고자 한다. Ka 대역에서 고정업무(FS)용으로 활용 가능한 HAPS 시스템의 간섭경감기법으로 5가지가 제안되었으며, 특히 본 회의에서는 디지털빔형성(DBF) 기법을 적용한 탑재안테나의 다중빔패턴의 성능분석 결과들이 제시되었다. HAPS 시스템의 간섭경감기법으로 디지털빔형성기법을 적용함에 있어서 그 필요성과 ITU-R WP9B에서 논의되고 있는 내용들을 중심으로 간섭경감기법 분석 결과를 기술하고 본 내용과 관련한 ITU-R에서의 향후 연구 전망 등을 살펴보고자 한다.
KSP Keywords
International telecommunications union radiocommunication(ITU-R)
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