By Abbas, Ph.D. Jamalipour
This can be the 1st accomplished research of 1 of the most popular themes in verbal exchange structures at the present time -- the appliance of low earth orbital (LEO) satellites in own communique networks (PCNs). LEO satellites are the main promising instruments for setting up worldwide PCNs and but their use may be complicated. The booklet describes the attribute layout good points of LEO satellites, discusses the layout of LEO satellite tv for pc communications networks, and offers analytical frameworks for comparing their functionality. It explains the most important difficulties when it comes to using LEO satellites in a world PCN -- either for trendy and tomorrow's purposes. The book's vast insurance, together with new examine viewpoints, worthy instruments, and primary research strategies, will allow engineers to: determine the benefits and downsides of non-geostationary satellites in comparison to traditional geostationary structures, know the way LEO satellite tv for pc structures can meet particular standards of destiny worldwide PCNs, evaluate diversified a number of entry schemes -- and choose the latest, so much promising schemes for destiny instant communications and cellular satellite tv for pc structures, ensure the site visitors features of LEO satellites for international PCNs, and follow new concepts to judge and enhance the functionality of LEO satellite tv for pc structures
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Additional info for Low Earth Orbital Satellites for Personal Communication Networks (Artech House Mobile Communications Library)
1 km/s, not comparable to the speed of any object of the Earth. Therefore, any mobile or fixed terminal on the Earth can be assumed to be a fixed object in a LEO satellite system. The anticipated global cellular and paging market size through the next century will mandate satellites for mobile communication. It is anticipated that by the year 2000 the number of global mobile phones and pagers will be more than 140 million each. Satellite systems are the only means for supporting such a large number of terminals.
An ideal hand-off protocol should be transparent to the users, who should not sense the change of connection to a new base station. If the number of hand-offs increased, the probability of interrupting the connection could be increased to unacceptable values because of nonideal protocols. , the satellites) move, and all mobile or fixed users on the ground appear almost as fixed users, because of the high ground speed of the satellites. In that case, a scenario similar to that of cellular systems exists; the only difference is that the mobility of users in a cellular system is replaced by the mobility of base stations in a LEO satellite system.
Vol. 13, No. 2, 1995, pp. 406–415.  Viterbi, A. , “A Perspective on the Evaluation of Multiple Access Satellite Communication,” IEEE J. Select. , Vol. 10, No. 6, 1992, pp. 980–983. , “The European Mobile Satellite Arena—INMARSAT, ALCATEL, QUALCOMM, and ESA,” Via Satellite, Sept. 1992. , “Signal-to-Interference Ratio of CDMA in Low Earth-Orbital Satellite Communication Systems With Nonuniform Traffic Distribution,” Proc. , San Francisco, CA, 1994, pp. 1748–1752. , “Performance of an Integrated Voice/Data System in Nonuniform Traffic Low Earth-Orbit Satellite Communication Systems,” IEEE J.
Low Earth Orbital Satellites for Personal Communication Networks (Artech House Mobile Communications Library) by Abbas, Ph.D. Jamalipour