MULTIPLEXING, MULTIPLE ACCESS AND SIGNALLING IN THE MAROTS MARITIME MOBILE SATELLITE SYSTEM

The MAROTS maritime mobile satellite system is designed primarily to provide telephone and telex communications with ships at sea. Facilities for dealing with distress calls on a priority basis are also provided. The system must be capable of serving a large number (thousands) of ships, each of which will have a low calling rate. The ships will communicate with terrestrial subscribers through a small number (tens) of shore stations. With only a small number of satellite channels available, it would thus be impossible to allocate channels permanently to ships, and the satellite capacity must therefore be assigned to ships on demand. The multiple access method and the multiplexing of channels must be designed to permit this flexibility of use, and the required signallig capability must also be provided. The methods described in this paper, although designed originally for MAROTS, are considered suitable for the future INMARSAT system.

Media Info

  • Pagination: p. 52-56

Subject/Index Terms

Filing Info

  • Accession Number: 00193646
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: IEE 160 Conf Paper
  • Files: TRIS
  • Created Date: Apr 25 1979 12:00AM