Ray optical approach for a wideband indoor wave propagation model with moving receiver

Abstract

For investigations on channel characteristics in a deterministic indoor environment, a ray-tracing-based wideband wave propagation model with moving receiver is proposed. Considering multiple reflections and transmissions to be basic propagation effects inside buildings, the space-variant complex channel impulse response and the scattering function are calculated and compared to wideband measurements at 1800 MHz carried out in a shelter. Good agreement was found for delay times, detection of propagation paths and general characteristics of the impulse responses both for the LOS and NLOS cases. Yet, especially the magnitudes in the NLOS case suffer, for example, from uncertainties caused by an arbitrary choice of material parameters. Further investigations have to show, whether it is possible to apply the model to less deterministic environments.