Patent ID: 6341223
Filing Date: 2002-01-22
Classification: H04B,H04W

Abstract:
A computer-implemented method for predicting the characteristics of wave propagation in an urban environment, comprising the steps of:defining an urban canyon having boundaries comprising a pair of building surfaces and a ground surface, and having transmitting and receiving antennas therein; establishing a plurality of first reflection points on said ground and building surfaces at which direct rays from a transmitting antenna are reflected; defining a plurality of image antennas, each corresponding to a reflection off a building or ground surface in said urban canyon; determining propagation paths corresponding to said image antennas, wherein the propagation paths are determined by finding a reflection order of the propagation paths using a total reflection count according to the number and the propagation paths of said image antennas and counts of the propagation of waves reflected off the building surfaces prior to the propagation of waves reflected off the ground surface; computing respective reflection electric field vectors of said propagation paths corresponding to the image antennas; and determining the total receiving power of a receiving antenna through said computed reflection electric field vectors of the propagation paths and a unit polarization vector of the receiving antenna.