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An FDMA system concept for 30/20 GHz high capacity domestic satellite serviceThe paper summarizes a feasibility study of a multibeam FDMA satellite system operating in the 30/20 GHz band. The system must accommodate a very high volume of traffic within the restrictions of a 5 kW solar cell array and a 2.5 GHz bandwidth. Multibeam satellite operation reduces the DC power demand and allows reuse of the available bandwidth. Interferences among the beams are brought to acceptable levels by appropriate frequency assignments. A transponder design is presented; it is greatly simplified by the application of a regional concept. System analysis shows that MSK modulation is appropriate for a high-capacity system because it conserves the frequency spectrum. Rain attenuation, a serious problem in this frequency band, is combatted with sufficient power margins and with coding. Link budgets, cost analysis, and weight and power calculations are also discussed. A satellite-routed FDMA system compares favorably in performance and cost with a satellite-switched TDMA system.
Document ID
19820039949
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Berk, G.
(Mitre Corp. Bedford, MA, United States)
Jean, P. N.
(Mitre Corp. Bedford, MA, United States)
Rotholz, E.
(Mitre Corp. Bedford, MA, United States)
White, B. E.
(Mitre Corp. Bedford, MA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Communications And Radar
Report/Patent Number
AIAA PAPER 82-0447
Meeting Information
Meeting: In: Communications Satellite Systems Conference
Location: San Diego, CA
Start Date: March 7, 1982
End Date: March 11, 1982
Accession Number
82A23484
Funding Number(s)
CONTRACT_GRANT: NASA ORDER C-49029-D
Distribution Limits
Public
Copyright
Other

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