Comparison of measured and theoretical diffracted fields around building corners at 2.4 GHz

Several channel sounding measurements in around-the-corner propagation scenarios have been performed with a vector network analyzer and a synthetic volume aperture receiving array at 2.44-2.45 GHz. A radio imaging technique applied to such measurement data yields time delay, direction of arrival and path loss corresponding to individual field components arising due to multipath propagation. This allows the identification of the diffracted components of the received geometrical optics by incorporating diffraction phenomena in the limit of field and the determination of the corresponding diffraction coefficients experimentally. The measured values were compared to various theoretical diffraction coefficients and conclusions have been drawn from the comparison. In addition, a short review of the existing models for diffraction is given in the paper.