Journal ArticleDOI
Increased capacity using CDMA for mobile satellite communication
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TLDR
Comparisons to single-channel-per-carrier FDMA systems are presented which show that the CDMA approach provides greater capacity and also the feasibility of the spread-spectrum approach to satellite mobile communications.Abstract:
The performance of a spread-spectrum CDMA (code-division multiple access) system in a mobile satellite environment is analyzed. Comparisons to single-channel-per-carrier FDMA systems are presented which show that the CDMA approach provides greater capacity. Results from computer simulations, laboratory tests, and field tests of a prototype modem are also presented. The tests results show excellent performance of the modem in the mobile environment and also the feasibility of the spread-spectrum approach to satellite mobile communications. >read more
Citations
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Journal ArticleDOI
On the capacity of a cellular CDMA system
Klein S. Gilhousen,Irwin M. Jacobs,Roberto Padovani,Andrew J. Viterbi,L.A. Weaver,Charles E. Iii Del Mar Wheatley +5 more
TL;DR: In this paper, the interference-suppression feature of CDMA (code division multiple access) can result in a many-fold increase in capacity over analog and even over competing digital techniques.
Proceedings Article
On the capacity of a cellular CDMA system
Klein S. Gilhousen,Irwin M. Jacobs,Roberto Padovani,Andrew J. Viterbi,L.A. Weaver,Charles E. Iii Del Mar Wheatley +5 more
TL;DR: It is concluded that properly augmented and power-controlled multiple-cell CDMA (code division multiple access) promises a quantum increase in current cellular capacity.
Patent
Location reporting satellite paging system with optional blocking of location reporting
TL;DR: A location reporting paging communication system comprising space satellites, ground stations and a remote receiving unit adapted to resolve a global position from signals transmitted from a communication transmitter is described in this paper.
Journal ArticleDOI
Very low rate convolution codes for maximum theoretical performance of spread-spectrum multiple-access channels
TL;DR: With this approach and coordinated processing at a common receiver, it is shown that the aggregate data rate of all simultaneous users can approach the Shannon capacity of the Gaussian noise channel.
Journal ArticleDOI
Soft handoff extends CDMA cell coverage and increases reverse link capacity
TL;DR: It is shown that soft handoff increases both parameters significantly relative to conventional hard handoff and reverse link capacity for a spread spectrum CDMA system.
References
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Journal ArticleDOI
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The AMSC mobile satellite system
Carson E. Agnew,Jai Bhagat,Edwin A. Hopper,John D. Kiesling,Michael L. Exner,Lawrence Melillo,Gary K. Noreen,Billy J. Parrott +7 more
TL;DR: The American Mobile Satellite Consortium (AMSC) Mobile Satellite Service (MSS) system is described in this article, which uses three multi-beam satellites to provide L-band MSS coverage to the United States, Canada and Mexico.
NASA's mobile satellite development program
TL;DR: A technical overview is given of the extensive research and development studies and development performed under NASA's mobile satellite program (MSAT-X) in support of the introduction of a U.S. MSS.