Performance Analysis of Propagation Path Loss Model for Millimeter Wave Systems in Dense Urban Environments

Abstract

A number of studies on future mobile communications, millimeter wave (mmwave) has been identified as a crucial enabling technology for achieving massive connectivity in the Fifth generation (5G) and beyond periods. However, millimeter wave propagating signalssufferfrom high propagation loss and sensitivity to blockage, resulting in high outage probability and low Signal-to-Noise Ratio (SNR). This thesis analysis the performance of millimeter wave propagation path loss and building penetration loss (BPL). The loss is crucial for understanding the huge impact on many important things in Radio Access Network (RAN) and network performance. The Close-n (CI) Reference Model, and the Alpha-Beta-Gamma (ABG) Model are among the path loss models. They have high consistency and accuracy, and are acceptable for urban areas and outdoor to indoor scenarios in the 5G Channel Model (5GCM). We discussed the results of simulations at 4 GHz, 28 GHz and 73 GHz for 5G cellular networks in dense urban environments. Simulations are performed with the MATLAB 2017a program to analysis the performance of mm wave characterization. Our thesis presents large-scale characterization of mm wave such as path loss, delay spread, and power delay profile and also BPL for both line of-sight (LOS) and non-lime-of-sight (NLOS) cases. The thesis also analysis propagation of directional and omnidirectional path loss in smaller microcells with five times larger cell size to performance difference and the effects of various millimeter wave frequency bands with the increase in transmitter (TX) and receiver (RX) distance. At high frequency, both low BPL and high BPL performance gradually decline when the distance between base stations (BSs) and user’s increases. Our work shows that mm wave communications is feasible for all fifth generation (5G) deployments within the range of microcells of 200m and 112m for frequencies such as 28 GHz and 73 GHz respectively, and for macrocells in the range of 625m for lower frequencies such as 4 GHz to be used in dense urban areas.