This paper proposes a novel beamforming technique to form an arbitrary-shaped cell for the high altitude platforms (HAPs) mobile communications. The new technique is based on pattern summation of individual low-sidelobe narrow-beams which constitute the desired cell pattern weighted by an amplitude correcting function. The new cell pattern can be adapted to cover the main highways forming worm-shaped cells which may cover the highway for long distances up 100km and it will has an important role in reducing frequent handoffs and signaling traffic of location updating from moving users over the long highways.
2. Thornton, J., D. Grace, C. Spillard, T. Konefal, and T. C. Tozer, "Broadband communications from a high-altitude platform: The european helinet programme," Electronics & Communications Engineering Journal, June 2001.
3. Karapantazis, S. and F. Pavlidou, "Broadband communications via high-altitude platforms: A survey," IEEE Communications Surveys & Tutorials, 1-31, First Quarter 2005, 2005.
4. Dessouky, M., H. Sharshar, and Y. Albagory, "Geometrical analysis of high altitude platforms cellular footprint," Progress In Electromagnetics Research, Vol. 67, 263-274, 2007.
doi:10.2528/PIER06092502
5. Dessouky, M., H. Sharshar, and Y. Albagory, "Design of high altitude platforms cellular communications," Progress In Electromagnetics Research, Vol. 67, 251-261, 2007.
doi:10.2528/PIER06092501
6. Dessouky, M., H. Sharshar, and Y. Albagory, "Efficient sidelobe reduction technique for small-sized concentric circular arrays," Progress In Electromagnetics Research, Vol. 65, 187-200, 2006.
doi:10.2528/PIER06092503
7. Dessouky, M., H. Sharshar, and Y. Albagory, "A novel tapered beamforming window for uniform concentric circular arrays," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 14, 2077-2089, 2006.
doi:10.1163/156939306779322701
8. Dessouky, M., H. Sharshar, and Y. Albagory, "An approach for Dolph-Chebyshev uniform concentric circular arrays," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 6, 781-794, 2007.
doi:10.1163/156939307780749075
9. Dessouky, M., H. Sharshar, and Y. Albagory, "Optimum normalized gaussian tapering window for sidelobe reduction in uniform concentric circular arrays," Progress In Electromagnetics Research, Vol. 69, 35-46, 2007.
doi:10.2528/PIER06111301
10. Lee, W., Mobile Cellular Communications, McGraw Hill, New York, 1989.
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