Field strength prediction behind a lossy dielectric block by using the 3D parabolic equation model

In this paper, a 3D parabolic equation wave propagation model based on split-step Fourier (SSF) transform for field strength prediction behind a lossy dielectric block, which just like an actual building in urban mobile communication system is presented. Field decomposed odd part and even part used to dealing with ground boundary condition is proposed here. And Fourier transform adding forward difference (FT-TD) approach, which used to dealing with the block vertical surface boundary condition is also brought forward. Comparing the result with the published literature, the validity of these methods is testified.