Channel characterization of 28 and 38 GHz MM-wave frequency band spectrum for the future 5G network

In order to achieve higher data rate for the next-generation 5G communication network, utilization of millimeter waves (mm-waves) frequency bands is the major advancement for getting the higher bandwidth. Despite the fact, various challenges are coming to light such as propagation loss, time delay, fading, and scattering losses, when radio signals are propagated at mm-waves frequencies. Propagation parameters optimization is crucial for achieving better performance for the given wireless network. In this paper, we will characterize the propagation channel and investigate the potential ability of 28 GHz and 38 GHz mm-wave frequency bands for two 5G currently most prospective propagation path loss model such as Close-in (CI) and Alpha-Beta-Gamma (ABG). Our results have been evaluated by estimating the average user throughput, cell-edge user throughput, average cell throughput, spectral efficiency and fairness index with respect to a different number of users in a cell. The results show that the 38 GHz frequency model giving more throughput performance as compared to 28 GHz frequency band due to higher bandwidth availability on a higher frequency. Furthermore, in this paper, it is quantitatively proved that due to using only one model parameter [i.e. path loss exponent (PLE)] in CI path loss model, it performs significantly better in comparison with ABG path loss model.