Fundamental Investigation on Indoor Local 5G Radio Map Generation Using Real-Time Spectrum Monitor for Realizing Smart Factory

In recent years, the demand for smart factories capable of wirelessly transmitting information and power has grown. Understanding the wireless environment within these factories is crucial for this transmission. As a fundamental investigation, we generated a radio map for the local fifth generation (L5G) using the 4.8-GHz band. This map was generated using the free-space propagation loss formula and the directivity measurement results of the transmitting antenna. We then measured the received power at four locations using a spectrum monitor. By comparing the radio map with these measurements, we found that it is possible to estimate the received power in the line-of-sight environments.