Beamforming Techniques for High-Altitude Platforms Communications
Yasser Albagory
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Beamforming Techniques for High-Altitude Platforms Communications

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In this book, the coverage of High-Altitude Platforms cellular system is analyzed and improved using antenna arrays and beamforming techniques. Firstly, the HAP cell footprint is analyzed and footprint equations are investigated that include the effects of the earth's curvature. Secondly, regarding the cellular layout expansion of HAPs, an algorithm is introduced for cells' beams pointing generation. Thirdly, the carrier-to-interference (CIR) in the HAP tessellated cell structure has been improved using uniform circular antenna arrays (UCCAs) with low-sidelobe levels. Fourthly, the wide area c...