Measurement of Electric Field Distribution of Indoor Local 5G Using Radio Environment Visualization System Applying SDR Device

In this research, a visualization system for the distribution of electric field in local indoor 5G networks of sub-6 band is fabricated using a software-defined radio (SDR) device. A compact SDR device mounted on a robotic vehicle allows for fast remote-controlled and automated measurements. The measured distributions agreed well with the simulated ones including the null at the station due to the radiation pattern of the station and attenuations of over 10 dB in the Non line of sight (NLOS) areas. Thus, it confirmed the validity of the measurements made by the visualization system.