Modeling and Characterization of Urban Radio Channels for Mobile Communications;Doctoral thesis

摘要

Results of this thesis contribute in modeling and characterization of radio channels for future mobile communications. The results are presented mainly in three parts: (a) modeling of propagation mechanisms; (b) methodology of developing a propagation model; (c) characterization of urban radio channel. One of the main propagation physical phenomena that have an important role in diverting signals to non line of sight scenarios is the diffraction process. This thesis proposes diffraction coefficients that have better agreement with finite difference time domain solution and rigorous diffraction theory than the coefficient commonly used in propagation predictions for mobile communications.