Passive repeater for removal of blind spot in NLOS path for 5G fixed wireless access (FWA) system

• Published in: 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting pp. 2049 - 2050
• Main Authors: Dohyuk Ha, Dongkyu Choi, Hyunjin Kim, JunSig Kum, Jungyub Lee, YoungJu Lee
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-07-2017
• Subjects: 5G mobile communication; Antenna measurements; fix wireless access (FWA); Loss measurement; Nonlinear optics; passive repeater NLOS propagation; reflector; Repeaters; Windows; Wireless communication
• ISSN: 1947-1491
• DOI: 10.1109/APUSNCURSINRSM.2017.8073067

This paper presents an approach to improve the link budget in a non-line-of-sight (NLOS) path between a base station (BS) and a customer premises equipment (CPE) for 5G fixed wireless access (FWA) system. The oblique incidence of transmitting power into a receiver is one of most challenging scenarios for the 5G mm-wave system with highly directive antennas. In this work, we propose application of an additional antenna structure attached near window such as a passive repeater array which can reflect an incident power into a specific angle. With the passive repeater, the path loss is measured in the real environment assuming a feasible challenging scenario where the incident angle is near 90°. The measurement shows that the passive repeater array enables to improve the link budget by 40 dB, compared to the case without any additional reflector structure.