Simulation of indoor ultra wideband propagation channel modeling

UWB (ultra wideband) propagation channel modeling is very important for UWB communication system designing and its performance optimization. The split-field PML (perfectly matched layer) and unsplit-field PML were combined respectively with PSTD (pseudospectral time-domain) method to model 2-D (two dimensional) and 3-D indoor UWB propagation. The attenuation factor algorithm was applied to simulate realistic UWB propagation under 2-D environment. Channel characteristics were studied and the accuracy and efficiency of their modeling were also analyzed. Numerical simulations have indicated that the split-field and unsplit-field PML combined PSTD methods have the same accuracy while the consumed computer memory by unsplit method has been reduced to nearly one half of that by split method. Some resultant channel characteristics can be observable from the measurement results.