A Comparative Analysis of Propagation Models Suitable for Non-Line-of-Sight 5G Communication at 26 GHz

The Non-Line-of-Sight (NLOS) communication in millimeter wave (mmWave) experiences high path loss in the urban region due to reflection, blockage etc. To design an efficient 5G system, the channel should be modelled such that data rate and capacity are high. This paper presents the close-in (CI) free space reference distance model, CI model whose path loss exponent is frequency weighted (CIF) and the alpha-beta-gamma (ABG) model for 26 GHz. The use of these models in 3rd Generation Partnership Project (3GPP) and Fifth Generation Wireless System design has drawn the attention of researchers to investigate more. As 26 GHz 5G band is commercially used for 5G communication in India, we have analyzed the path loss and capacity in this frequency taking different distances for Urban Macrocell (UMa), Urban Microcell (UMi) and input office scenario considering NLOS communication. The results show that path loss varies with variation of cell size.