INVESTIGATION OF INDOOR PATH LOSS PREDICTION MODELS FOR 5G WIRELESS NETWORKS AT 28 GHZ FOR DIFFERENT ANTENNA POLARIZATIONS

Abstract

Cellular data traffic is expected to increase fivefold by 2030. This rise in connectivity can be met by expanding connectivity, bandwidth availability, and huge, small cell expansion. Significant advancements in air-interface configuration have resulted in spectral effectiveness that is very similar to the channel capacity. This study, done in an interior corridor setting, provides line-of-sight (LOS) real measurement data scenarios that evaluate close in (CI) as well as floating intercept (FI) path loss prediction models for 28 GHz frequency ranges at various antenna polarizations. This work describes, investigates, and compares the effectiveness of two renowned path loss prediction approaches: the single frequency CI empty space reference distance approach and the single frequency FI model. The LOS comparison investigation at V-V and V-H antenna polarizations demonstrates that the CI and FI models provide reasonable and precise predictions that match the actual observed data for the two polarizations. For both polarizations, the slope of the path loss curve in the FI is almost identical to the path loss exponent (PLE) values, showing similar behavior in this environment. Finally, the LOS findings indicate that the CI and FI mode ls can be trusted as good path loss frameworks for hallway settings for V-V along with V-H polarizations. Both polarizations demonstrate stable actions over measured distances in the 28 GHz band, with CI being more stable and having more fits in both cases.