A General 3D GBSM for 6G Indoor Optical Wireless Communication Systems

A novel general three-dimensional (3D) geometry-based stochastic model (GBSM) is proposed for the sixth generation (6G) indoor optical wireless communication (OWC) channels in this paper. Propagation characteristics of infrared (IR), visible light (VL), and ultraviolet (UV) bands in indoor scenarios are integrated in the proposed model. The common characteristics of optical wireless bands and unique characteristics of the three bands are considered. The statistical properties, such as frequency correlation function (FCF), received power, root mean square (RMS) delay spread, and path loss (PL) are explored based on the proposed channel model, and the properties of the three optical bands are compared. Results illustrate that statistical properties of the UV band are quite different from those of the other two bands.