抄録
For prediction of radio propagation in microcellular system, it is necessary to investigate not only the line-of-sight path but also the out-of-sight path. In this paper, the electric field intensities in shadow regions are calculated by using GTD as well as Knife-Edge diffraction. Using GTD the diffractions are usually different between parallel and perpendicular polarizations except at a certain incident angle. It can be also found that beyond diffractions loss of about 30dB referred to the free space Knife-Edge diffraction produces almost the same results compared with GTD diffraction.
