Propagation Characteristic for Indoor E-Band Wideband Channels

Abstract- We discuss the measured propagation characteristics of E-Band radio signals measured in indoor office and closed meeting room scenarios for LOS (Line-of-Sight) and NLOS (Non-Line-of-Sight) conditions. A new wideband channel sounder with 2 GHz bandwidth (i.e. 72 GHz ~ 74 GHz) was used for the propagation measurements. In both the LOS and NLOS scenarios, a horn antenna with 40° HPBW was used at the transmitter and a scanned directional horn antenna with 10° HPBW was used at the receiver. These measurement results show a path loss exponent of about 2.1 for LOS and 3.4 for NLOS respectively. These measurements are quite similar to the values observed for the traditional cellular frequency bands below 6 GHz. The measurements confirm the suitability of E Band radio channels for future 5G applications indoors, and serve to guide the design of future millimeter-wave mobile communication radio systems.