A worldwide aeronautical mobile satellite system is about to become operational. The system architecture and access methods have been debated extensively, resulting in the selection of Time Division Multiplexing/Time Division Multiple Access (TDM/TDMA) access for packet data, and Single Channel Per Carrier (SCPC) for voice. These have become standards for airline use, and also satisfy the known requirements of ICAO for safety related communications. Voice communications are expected to absorb a high proportion of satellite bandwidth and power in the future. Here, it is explained why INMARSAT selected Frequency Division Multiple Access/SCPC satellite access for this application.
Choice of FDMA/SCPC (Frequency Division Multiple Access) Access Technique for Aeronautical Satellite Voice System
1989
6 pages
Report
No indication
English
Common Carrier & Satellite , Radiofrequency Waves , Communication satellites , Frequency division multiple access , Mobile communication systems , Single channel per carrier transmission , Time division multiple access , Time division multiplexing , Voice communication , Packet transmission , Requirements , Safety , Foreign technology
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