Abstrak HAPS (High Altitude Platform Station) is an alternative technology to an existingcommunication systems named terrestrial and satellite systems. One of the applicationsthat can be employed in HAPS system is cellular 5G technology. However,interference is one of problems in achieving maximum capacity. Multispot beam andthe power control are both used to overcome the problem. This multispot beam antennaworks like a base station on a terrestrial system. The multispot beam antenna lies at aclose distance on the platform. Thus the path passed by the signal of each user has anearly equal length of trajectory. Almost the same trajectory causes the shadowingexperienced by each user almost the same value. This is in contrast to the terrestrialsystem in which each user gets the power control of the BTS residing in each cell. Thelength of the path taken by each user's signal is different so the shadowing value is alsodifferent.This paper aims at evaluating the capacity of 5G cellular in single HAPSsystem in which the bandwidths used are 0.1 GHz and 1 GHz. Simulation result showsthat outage probability using 0.1 GHz bandwidth resulting the capacity in single HAPSsystem, which is maksimum 550 users in reference cell can achive 10-15 and it alsohappen when using 1 GHz with maksimum 5500 users in reference cell. |