Propagation Graphs for UWB MIMO Channels: Modeling and Experimental Validation

Abstract

Propagation graphs (PGs) are a spatially consistent model for multiple-input multiple-output (MIMO) and potentially ultra-wideband (UWB) wireless channels. In this work, we extend the PG model with an existing theory for UWB channels to incorporate the frequency dependency of the involved antennas. The resulting model has very few parameters and allows fast channel simulations in a scattering environment. Static in-door UWB measurements were conducted using a vector network analyzer and virtual antenna arrays to confirm the validity of the presented model. A qualitative comparison between the simulation results and the measurements shows that the presented model fits the considered propagation environment very well.