Measurement-based parameter adaptation of wideband spatial mobile radio channel models

A prerequisite for the performance analysis and optimization of future mobile radio systems applying directional diversity or adaptive array techniques is the availability of realistic channel models which explicitly take into account the spatially inhomogeneous distribution of partial waves. Unfortunately, recent proposals for such spatial channel models based on a statistical approach have not yet been verified to be realistic. Moreover, the behaviour of said models is determined by more or less arbitrarily choosing the model parameters. Wideband measurements of channel impulse responses which include unambiguous information about the directions-of-arrival in the azimuth are used to adapt parameters of a statistical spatial channel model. Results for the spectral efficiency of the uplink in a joint detection CDMA mobile radio system using directional diversity are presented which were derived by simulations based on such a parameterized spatial channel model.