Novel 3-D Irregular-Shaped Geometry-Based Channel Modeling for Stadium Environments

In this paper, we propose a novel three-dimensional (3-D) irregular-shaped channel model for characterizing typically ellipsoidal stadium scenes, which is specifically composed of multiple-confocal truncated semi-ellipsoids and a rectangular parallelepiped. Firstly, we derive the channel impulse responses (CIRs) of the proposed model under the assumption of the spherical wavefront. Secondly, considering the influence of moving obstructions in the stadium, we develop an algorithm for describing occlusion obstacles based on the geometric theory, by means of which the channel model is established through combining with the truncation angle of the truncated semi-ellipsoid. Finally, the impacts of the size of the obstacle, the movement of the obstacle and the truncation angle of the truncated semi-ellipsoid on the proposed channel model are investigated via key statistical properties, e.g., the spatial-temporal cross-correlation function. Our numerical and simulation results show that our proposed model can capture the channel characteristics in the stadium scenes, which can provide guidance for the corresponding system design and performance evaluation in the future.