Effect of Human Body Shadowing on Spatial Correlation of Indoor Millimeter MIMO Branches

The research on the fifth-generation wireless telecommunication system (5G) is widely ongoing. ITU-R intends to utilize several upper centimeter bands and millimeter bands for 5G indoor services. Many reports have shown that the millimeter wireless communication link is affected by human body shadowing. But, the literature includes little consideration of the effect of human body shadowing on the spatial correlation of indoor millimeter MIMO branches. This objective of this paper is quantitative evaluation of the effect of human body shadowing on the spatial correlation of indoor millimeter MIMO branches with feasible antenna separation at transmitter and that at receiver, utilizing the dual-knife-edge human body model. Capacity of MIMO channel is also evaluated and compared with the value in the case that the fully correlated fading between MIMO branches is assumed.