Millimeter-wave distance-dependent and height-dependent path loss models for 5G wireless systems

This paper proposes three distance-dependent and height-dependent models, height-dependent single-frequency close-in (HD-CI) model, the height-dependent floating-intercept (HD-FI) model and height-dependent multi-frequency alpha-beta-gamma (HD-ABG) model. Using the presented measurement results at 28 GHz and 73 GHz in urban micro canyon street scenario (UMi-SC) and at 38 GHz in urban macro scenario (UMa), the model parameters results are presented. The analysis results show that the proposed models are contributed to estimated path-loss compared to traditional path-loss models. Furthermore, two conclusions can be concluded. First, the introduced height-dependent models are helpful to estimate the path-loss in the Umi-SC scenario but have little contribute in the Uma scenario. Second, in Umi-SC scenario, under the same distance, the difference between Tx and Rx height lower, the path-loss higher in non-light-of-sight (NLOS) scenario.