Performance Analysis of High Order Close-In Path Loss Model at 28 and 38 GHz

Millimeter wave technology has experienced propagation loss due to the obstacles such as furniture, walls, and people etc. Due to their incredibly tiny wavelengths of millimeter waves, the high-frequency bands have been found to suffer significantly from the effects of wireless propagation. Hence, it is crucial to anticipate the path loss accurately. The close-in (CI) path loss model's high-ordering reliance on the separation between the antennas of the transmitter and the receiver on a logarithmic scale is examined in this work. In this paper, the performance of the third-order CI model for the frequency bands 28 and 38 GHz is analyzed. Two different antenna polarizations are used in both the line of sight (LOS) as well as non-line of sight (NLOS) scenarios in an interior corridor. The outcome demonstrates a significant drop in the values of the shadow fading standard deviation with increasing model rank. The results also show that the third order CI model gives better performance as compared to the standard CI model for predicting the path loss.