Indoor Path Loss Measurements at the 5G Millimeter-Wave Bands of 26 and 39 GHz

Several millimeter-wave frequency bands have been identified to be used in the 5G wireless communication standard. The use of such high frequencies is one of the pillars of this new technology. Experimental measurements have been taken in the Universidad Politécnica de Madrid at 26 and 39 GHz, two of the bands selected for 5G, and are presented in this paper. Since the propagation campaign in Madrid is at an initial stage, the main equipment characteristics and data processing are presented thoroughly. The measurements were gathered in an indoor hallway scenario with line-of-sight conditions. With them, the propagation loss has been estimated and regression fittings and model comparisons have been carried out with good results.