Comparative Analysis of mmWave Channel Model with 26 GHz and 28 GHz: A Case Study in Wonosobo City

This paper carried out a comparison test between 26 GHz and 28 GHz mmWave frequency on meeting the desired performance with 10-20 Gbps bandwidth. A High-frequency communication system has significant challenges from earth contour, attenuation characteristic, and natural vegetation vulnerability. Wonosobo is a tropical area in Indonesia with high levels of rainfall and high altitude, so it is necessary to know the characteristics of the channel to determine the optimal system design. Using 200 MHz bandwidth, QPSK-OFDM system, the mmWave channel model is represented with Power Delay Profile (PDP) from the channel response of minimum rain attenuation and maximum rain attenuation of Wonosobo environment parameters. Outage Probability at R coding rate is obtained from testing 90
^th
-percentile cumulative distribution of instantaneous PDP of multiple users. This study compares both mmWave frequency system performance with a maximum rainfall of 1,029 mm/hour and a minimum of 0 mm/hour. The results showed that the frequency of 26 GHz is more efficient than 28 GHz, because the coding rate requires less E
_b
/N to achieve 10“4.