Spatial channel models for multi-antenna systems

A number of components of a spatial channel model are described, with details and discussion of parameter choices. The main characteristics of the model include a narrow angle spread (AS) per-path, with specific base station angle of departure (AoD) and mobile station angle of arrival (AoA) models. The large scale behaviors, described by the composite base angle spread (AS), delay spread (DS) and shadow fading (SF), are simultaneously correlated in the log-normal domain to produce the expected channel characteristics for each realization of the channel. Multiple delayed paths are defined temporally and spatially as a function of the correlated parameters. Each path is further composed of a number of sub-paths that are time evolved to produce a Rayleigh fading envelope, with a Doppler spectrum that is a function of the angle spread and angle of arrival of the sub-paths. Statistics of the output of the spatial channel model are presented to illustrate its behavior.