The probability of success or failure of an IRIDIUM Maximum capacity of one satellite, of one satellite's user beam, and of the entire Equations are similarly developed to calculate the Of GLOBALSTAR's outage probability, the probability that a call will be droppedįrom the system or blocked from connection with the system, is given and graphedĪgainst varying average call time and varying call arrival rate. Equations areĭeveloped to calculate the maximum capacity of one satellite, of one satellite's userīeam, and of the entire GLOBALSTAR system over CONUS. In this thesis, two LEO satellite systems with different multiple access schemesĪre analyzed. MASTER OF SCIENCE IN ELECTRICAL ENGINEERINGĭepartment of Electrical and Computer Engineering NUMBER OFĭivision multiple access (TDMA), frequency division multiple access (FDMA) PAGES 67ġ7.
#TETRAPOL FDMA TRANSMISSION CODE#
SUBJECT TERMS LEO satellite system, code division multiple access (CDMA), time 15.
System channel for a call than will IRIDIUM.ġ4. Provides five times the service capacity of IRIDIUM over CONUS and provides a better probability of obtaining a Probability of success or failure of an IRIDIUM subscriber obtaining a system channel is given by the Erlang Lossįormula and graphed against varying average call time and varying call arrival rate. Equations are similarly developed to calculate the maximumĬapacity of one satellite, of one satellite's user beam, and of the entire IRIDIUM system over CONUS. The second system, IRIDIUM, uses TDMA/FDMA. GLOBALSTAR's outage probability, the probability that a call will be dropped from the system or blocked fromĬonnection with the system, is given and graphed against varying average call time and varying call arrival rate. Satellite's user beam, and of the entire GLOBALSTAR system over CONUS. Equations are developed to calculate the maximum capacity of one satellite, of one In this thesis, two LEO satellite systems with different multiple access schemes are analyzed. Official_l)olicy or position of the Department of Defense or the U.S. SUPPLEMENTARY NOTES The views expressed in this thesis are those of the author and do not reflect the SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. TITLE AND SUBTITLE A COMPARISON STUDY OF CDMA VERSUS 5. Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188)ġ. Send comments regarding this burden estimate or any otherĪspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data
REPORT DOCUMENTATION PAGE Form Approved OMB No. Naval Postgraduate SchoolĪpproved for public release distribution is unlimited. Theses and Dissertations Thesis CollectionĪ comparison study of CDMA versus TDMA/FDMA
0 kommentar(er)
