The likelihood of line-of-sight (LoS) is an essential component in any radio channel model. It is particularly useful for radio network planning and urban coverage prediction. Empirical LoS models are hard to derive due to a strong dependency on local topology and the need for large measurement datasets. Since buildings are the major
obstructions in a dense urban environment, we propose a new theoretical model to determine the LoS probability for air-to-ground channels based on local building geometry and knife-edge diffraction theory. The model takes into account key statistical parameters such as building height, building size, building coverage, street width and street angle distribution. The theoretical model is shown to agree well with ray tracing
simulation results. The statistical parameters, such as mean building height, percentage of area covered by buildings
(building coverage) and building density, can all be easily obtained for a specific location. We also derive equations for the
likelihood of LoS for a direct slant path. These equations can be used in the analysis of air-to-ground channels.
Publisher: Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Name and Venue of Conference: IEEE Global Telecommunications Conference, 2006 (GLOBECOM '06), San Francisco
Name and Venue of Event: IEEE Global Telecommunications Conference, 2006 (GLOBECOM '06)
Rose publication type: Conference contribution
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- radio channel model, likelihood of line-of-sight, Fresnel zone, knife-edge diffraction, air-to-ground, urban
Global Telecommunications Conference, 2006 (GLOBECOM 2006)
|Duration||1 Nov 2006 → …|