Scattered Propagation MIMO Channel Model for Non-Line-of-Sight Ultraviolet Optical Transmission

An inclusive scattered propagation multiple input multiple output (MIMO) channel model prototype is proposed for multiplexed non-line-of-sight ultraviolet (UV) optical transmission to fill up this theory blank. Two key difficulties concerning an MIMO UV channel model are resolved in this letter. In order to verify the feasibility of this channel model, 3-D narrow-band channel response is plotted by transmitter elevation angle and receiver spacing to give an intuitive insight into the symmetric channel structure and rank attribute. Spatial correlation is further defined geometrically and discussed compared with capacity behavior. Meanwhile, 2 × 2 and 4 × 4 cases are studied to investigate the impacts of practical parameters. Numerical results suggest that spatial correlation determines the capacity behavior and provide instructions for the realistic MIMO UV system design.