A Most Promising HAPs Technology for Next Generation Wireless Communication Systems
نویسندگان
چکیده
High Altitude Platform Stations (HAPs) is a new and promising technology, useful for Next Generation Wireless Networks, which can serve a large number of users at low-cost and quick access to modern wireless communication services. This paper reviews on the system structure, the advantages of HAPs over terrestrial and satellite architectures and possible communications applications of HAPs. It also presents an overview about some underway HAPs projects worldwide. Finally, it focuses on the technical challenges and critical issues of energy source, platform station keeping, modulation, coding, antennas design, propagation, diversity, interference and handoff issues.
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