FDTD modeling and characterization of the indoor radio propagation channel in the 434 MHz ISM band

In this paper the fundamental aspects of indoor radio propagation are presented and the possibility to characterize a dynamic channel by means of a static model based on the finite difference time domain method (FDTD) is examined. A 3D office environment is simulated in the 434 MHz ISM band for the characterization of channel operation according to the dominating distortions. The obtained results, which are in agreement with the theoretical values, verify that the channel operation is slow flat fading with No ISI making the application of the spatial diversity the most appropriate scheme.