Adaptive Arrays for Mobile Radio Communications

Abstract

An analysis to the high-altitude platforms communications system is done with the application of adaptive antenna arrays indicating the radio coverage parameters and the main factors that affect the system performance. Several coverage schemes are proposed based on switched-beam antennas for the macrocellular regions that need large area radio coverage with the expectation that the users may exist at any location within these regions. These schemes have shown a reduction in the power consumption, Increase in user location accuracy and efficient utilization of the spectrum. Of these approaches, the beam splitting one sequentially splits wider coverage beams into narrower sub-beams, which when compared with the other possible schemes can be considered as a compromise between hardware requirements and processing complexity