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An integrated voice and data multiple-access scheme for a land-mobile satellite systemAn analytical study is performed of the satellite requirements for a land mobile satellite system (LMSS). The spacecraft (MSAT-X) would be in GEO and would be compatible with multiple access by mobile radios and antennas and fixed stations. The FCC has received a petition from NASA to reserve the 821-825 and 866-870 MHz frequencies for the LMSS, while communications with fixed earth stations would be in the Ku band. MSAT-X transponders would alter the frequencies of signal and do no processing in the original configuration considered. Channel use would be governed by an integrated demand-assigned, multiple access protocol, which would divide channels into reservation and information channels, governed by a network management center. Further analyses will cover tradeoffs between data and voice users, probability of blocking, and the performance impacts of on-board switching and variable bandwidth assignment. Initial calculations indicate that a large traffic volume can be handled with acceptable delays and voice blocking probabilities.
Document ID
19850032566
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Li, V. O. K.
(Southern California, University Los Angeles, CA, United States)
Yan, T.-Y.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1984
Publication Information
Publication: IEEE, Proceedings
Volume: 72
ISSN: 0018-9219
Subject Category
Communications And Radar
Accession Number
85A14717
Distribution Limits
Public
Copyright
Other

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