Research on Electromagnetic Wave Propagation Estimation for Constructing Ubiquitous Information Communication Networks

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Fast and efficient estimation/visualization system has been developed for analyzing high frequency electromagnetic wave propagation in an urban environment with complex building structures. The developed system includes i) reliable measurement method for estimating electrical parameters of building materials ; ii) an analytical method for considering the multiple internal bouncing effect inside the building walls ; iii) a numerical method for calculating the scattering field due to the complicated structures such as human bodies; and iv) a fast visualization system for displaying electromagnetic field variation in a three dimensional space.