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Simulation of the Effects of Different Urban Environments on Land Mobile Satellite Systems Using Digital Elevation Models and Building Databases.
- Source :
- IEEE Transactions on Vehicular Technology; Sep2007 Part 2 of 2, Vol. 56 Issue 5, p2850-2588, 9p, 1 Black and White Photograph, 1 Diagram, 1 Chart, 1 Graph
- Publication Year :
- 2007
-
Abstract
- Effects of four urban areas of the city of Rio de Janeiro, Brazil, on the propagation channels of three land mobile satellite systems are analyzed using computer simulation. Initially, a digital elevation model, building databases, and a vegetation model are processed to generate azimuth-elevation maps of three path states (clear, shadowed, and blocked) for a large number of users. The simulation procedure combines the maps with signal models for the three states and a satellite orbit predictor. The probabilities of different path-state mixtures, as well as the cumulative distribution functions of fades in several types of received signals resulting from the application of different mitigation techniques, are presented and discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189545
- Volume :
- 56
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Vehicular Technology
- Publication Type :
- Academic Journal
- Accession number :
- 27726020
- Full Text :
- https://doi.org/10.1109/TVT.2007.900520