A fast 3-D ray tracing method for wave propagation prediction using a reflection tube tree

A Neoteric Three-Dimensional Geometry-Based Stochastic Model for Massive MIMO Fading Channels in Subway Tunnels

“…In order to design an applicative communication system in tunnel environment and evaluate the system performance, an accurate channel model and a detailed knowledge of its statistical properties are indispensable. There are already many useful models adapted in different environments, such as ray-tracing models [5][6], geometry-based deterministic models (GBDMs) [7], correlation-based stochastic models (CBSMs) [8][9] and geometry-based stochastic models (GBSMs) [10][11]. Because of the research convenience for the statistical characteristics and capacity, GBSMs are most widely used.…”