Ultra-wide bandwidth channel analysis in time domain using 3-D ray tracing

A true 3D ray tracing model has been developed for UWB propagation in a typical modern office. A time domain approach is used to determine all dominant paths. The number of rays that have to be considered can then be dramatically reduced for subsequent analyses. The time and spatial properties of the channel are presented. Each dominant path could then be represented by a function with these properties. Predictions of received waveforms were produced by convolving a typical input UWB pulse with these functions. Hence, different input pulse characteristics can be applied and the receiver characteristics rapidly evaluated.