File:A comparison study of CDMA versus TDMA-FDMA LEO satellite systems (IA acomparisonstudy1094532142).pdf
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Summary[edit]
A comparison study of CDMA versus TDMA/FDMA LEO satellite systems ( ) | ||
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Author |
Ciocco, Timothy Michael |
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Title |
A comparison study of CDMA versus TDMA/FDMA LEO satellite systems |
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Publisher |
Monterey, California. Naval Postgraduate School |
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Description |
In this thesis, two LEO satellite systems with different multiple access schemes are analyzed. The first system, GLOBALSTAR, uses CDMA. Equations are developed to calculate the maximum capacity of one satellite, of one satellite's user beam, and of the entire GLOBALSTAR system over CONUS. A detailed description of GLOBALSTAR's outage probability, the probability that a call will be dropped from the system or blocked from connection with the system, is given and graphed against varying average call time and varying call arrival rate. The second system, IRIDIUM, uses TDMA/FDMA. Equations are similarly developed to calculate the maximum capacity of one satellite, of one satellite's user beam, and of the entire IRIDIUM system over CONUS. The probability of success or failure of an IRIDIUM subscriber obtaining a system channel is given by the Erlang Loss Formula and graphed against varying average call time and varying call arrival rate. Results show GLOBALSTAR provides five times the service capacity of IRIDIUM over CONUS and provides a better probability of obtaining a system channel for a call than will IRIDIUM. Subjects: |
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Language | English | |
Publication date |
March 1996 publication_date QS:P577,+1996-03-00T00:00:00Z/10 |
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Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
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Accession number |
acomparisonstudy1094532142 |
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Source | ||
Permission (Reusing this file) |
Approved for public release, distribution unlimited |
Licensing[edit]
Public domainPublic domainfalsefalse |
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 21:51, 13 July 2020 | 1,275 × 1,650, 67 pages (1.96 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection acomparisonstudy1094532142 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #5247) |
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Short title |
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Author | Ciocco, Timothy Michael |
Date and time of digitizing | 16:01, 14 January 2003 |
Software used | LuraDocument PDF Compressor Server 5.7.66.46 (original: tif_convert_2_ps()) |
File change date and time | 17:00, 11 April 2013 |
Date metadata was last modified | 17:00, 11 April 2013 |
Conversion program | Adobe Acrobat 10.1.6 Paper Capture Plug-in |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |