Abstract
This paper explains how to design a wireless communication system via high altitude platform stations HAPS to cover the specific area (Using Diwaniyah city area as a model). High altitude platform station HAPS is unmanned airplane provides the wireless communication service to the wider area. It is designed to work at high altitude between (17-22 Km) and coverage area 400 Km. This study illustrated for calculating the co-channel interference between HAPS ground station with a terrestrial station and satellite station. Free space losses for a HAPS ground station has been applied to meet the geographic of Diwaniyah city. In addition, explaining the relationship between elevation angles with the radius of the coverage area. Interference mitigation techniques have been given, such as improving the antenna radiation pattern, then it proposed the elevation angle for the HAPS's ground stations to reduce an interference between HAPS network with Fixed Service (FS) and fixed satellite service (FSS). Finally, this study explains the relationship between elevation angles with the radius of the coverage area. For more reliability, the Scenario for covers the city of Diwaniya. Two ground stations have been proposed to connect with high-altitude platform station.
Highlights
High Altitude Platform Stations (HAPS) is one of the new technologies that provide the wireless communication service
High altitude platform station technology has been several advantages compared with satellite and terrestrial services such as low propagation delay compares with satellite and wide area coverage compare with terrestrial services [9]
The results obtained require to install tow ground stations with elevation angles 30° and 60° Assuming the location of fixed service (FS) and fixed service satellite (FSS) to avoid the interference between high altitude platform station (HAPS) ground stations and (FS, fixed satellite service (FSS)), location of the HAPS ground stations will be at (d1 and d2), the interference with Fixed Service (FS) and FSS stations decrease because user starts to go out of the HAPS coverage area and transmission power of terrestrial station is getting high there for quality of service to improve the chances of coexistence
Summary
High Altitude Platform Stations (HAPS) is one of the new technologies that provide the wireless communication service. This technology can be performing the service of the terrestrial station and satellite system. The service of high altitude platform station (HAPS) includes wireless communication, broadband communication, weather monitoring, security monitoring and data of city map collection. The High-Altitude Platform Station (HAPS) is situated between 17 and 22 Km above ground [2]. One of the advantages of using high altitude platform station can provide a wide coverage area. High altitude platform station technology has been several advantages compared with satellite and terrestrial services such as low propagation delay compares with satellite and wide area coverage compare with terrestrial services [9]. HAPS coverage area, depending on the altitude of HAPS and the elevation angle. (Figure 1) describes how HAPS can carry a large variety of wireless communications payload which provide a high capacity of endusers of broadband service
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