A ray tracing method with the use of dual graph for calculating electro-magnetic propagation in 2-D urban area

摘要

Actual propagation of radiated power from each base station in the urban area is too complicated to be analyzed exactly. Therefore, it is one of the important topics in mobile communication technology to propose a method of figuring out and visualizing an approximate profile of the propagation. In consideration of an urban area with buildings and obstructions as a tessellation made up of equilateral triangles, a new method of obtaining an approximate propagation profile is proposed, which uses the dual graph of a graph expressing the tessellation.