Outdoor to Indoor 2x2 Wideband MIMO Channel Modelling

This paper presents a stochastic 2times2 MIMO wideband channel modelling method that uses tapped delay lines (TDL) and a single channel spatial correlation matrix that represents a novel simplification with respect to other wideband MIMO models. The resulting models are accurate but also easy to implement and computationally efficient. Using this method, outdoor-indoor channel models are obtained based on a measurements campaign. These models will be very useful in the context of present and future broadband fixed wireless systems (BFWS), where a great deal of work has been done in recent years in order to develop and standardize new systems incorporating MIMO technology. In particular, the systems of the IEEE 802.16 family have evolved rapidly: version IEEE 802.16d was completed in the year 2004 and version IEEE 802.16e has been finalized recently.