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Satellite On-board Technologies for Next Generation Mobile Satellite Communication Systems
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  • Satellite On-board Technologies for Next Generation Mobile Satellite Communication Systems
  • Satellite On-board Technologies for Next Generation Mobile Satellite Communication Systems
저자명
Mitsugi. Jin,Nakasuga. Yoshinori,Imaizumi. Yutaka,Suzuki. Yoshinori,Ueba. Masazumi
간행물명
Joint Conference on Satellite Communications
권/호정보
2003년|2003권 1호|pp.51-57 (7 pages)
발행정보
통신위성우주산업연구회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Next generation mobile satellite communications systems involve various types of traffic, including telephone, satellite SCADA and mobile hot spot traffic. The traffic will be broadband up to 1Gbps. To achieve such systems in the S band at affordable cost, innovations in satellite on-board technology will be required along with the adaptive modulation application. This paper introduces the concept of next generation mobile satellite communication and outline the requirements for the on-board equipment. It also presents a multi-beam feeder with a beam-group concept and an adaptive filter as enabling technology for such systems. The multi-beam feeder technique can provide sufficient satellite antenna gain all over the coverage area while enabling power to be focused on the needed beams. The communication capacity can be significantly enhanced with a meticulous resources assignment, which entails a complicated spectrum layout on the feeder link. The on-board adaptive filter allows the feeder link to be packed while maintaining the enhanced capacity.