Accommodation of feeder-links of non-geostationary satellites for personal communications in frequency bands allocated to the fixed-satellite service
Accommodation of feeder-links of non-geostationary satellites for personal communications in frequency bands allocated to the fixed-satellite service
- Author(s): A.G. Reed
- DOI: 10.1049/cp:19960416
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- Author(s): A.G. Reed Source: Fifth International Conference on Satellite Systems for Mobile Communications and Navigation, 1996 p. 93 – 96
- Conference: Fifth International Conference on Satellite Systems for Mobile Communications and Navigation
- DOI: 10.1049/cp:19960416
- ISBN: 0 85296 658 X
- Location: London, UK
- Conference date: 13-15 May 1996
- Format: PDF
Stimulated by industrial developments towards personal communications links via constellations of non-geostationary (NGSO) satellites, the Administrative Radio Conference of 1992 made allocations to the mobile-satellite service (MSS) in the range 1-3 GHz, but no specific provision for the feeder-links to and from such constellations was made at that time, other than to recognise that Radio Regulation (RR) No. 22 allows bands allocated to the fixed-satellite service (FSS) to be used for the feeder-links of other space services. The subsequent increase in the pace of development prompted the World Radiocommunication Conference of 1993 (WRC-93) to request the ITU-R to carry out interference studies in all FSS bands below 30 GHz, to provide a basis for WRC-95 to take appropriate decisions regarding the spectrum for the feeder-links. The ITU-R Study Group 4 therefore investigated the frequency sharing problems which would potentially occur if NGSO MSS feeder-links were implemented alternatively in the 4-7 GHz range, the 11-16 GHz range and the 18-30 GHz range. The paper outlines the scenarios studied, gives examples of the quantitative results obtained, indicates the principal conclusions and summarises the relevant outcomes from WRC-95.
Inspec keywords: satellite links; microwave propagation; personal communication networks; frequency allocation; mobile satellite communication; radiofrequency interference
Subjects: Electromagnetic compatibility and interference; Satellite communication systems; Legislation, frequency allocation and spectrum pollution; Mobile radio systems; Radiowave propagation
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