High order S-MRTD time-domain modeling of fading characteristics of wireless channels

In this paper, high order time-domain S-MRTD (scaling function-based multiresolution time-domain) schemes were applied to characterize fading effects in an indoor wireless channel. The fading characteristics were observed to vary largely with the values of electrical properties of the construction materials. Such detailed considerations are not taken into account by statistical models. On the other hand, S-MRTD was observed to be effectively functional at coarser grids, compared to the traditional FDTD, resulting in significant reduction of memory and CPU-time. Such a deterministic approach provides a more accurate system characterization, compared to the measurement-based AF models. Finally, the proposed technique can characterize a channel at a resolution of centimeters, practically impossible for a measurement campaign