Analysis of Millimeter-Wave Large-Scale Propagation Characteristics at Multi-Frequency in Indoor Environment

In order to realize the vision of “Internet of Things”, a very low latency of less than 1ms on wireless access network and high capacity data transmission rate will be required. In this paper, the wireless channel large-scale propagation characteristics in conference room is predicted through the ray-tracing (RT) method at 25.5, 28, 37.5 and 39.5 GHz. Employing a commercial RT software named Wireless InSite, extensive simulations are carried out with different receiver locations on the desktop and ground. Correspondingly, the large-scale propagation characteristics such as path loss, shadow fading, and cross-polarization ratio (XPR) are extracted and analyzed. This paper compares the evaluated channel propagation characteristics with the measured data presented by the other researchers. The RT simulated results are in good agreement with the measured results.