ABSTRACT
Thus, an increasing demand by mobile-satellite networks designed to provide a global radio coverage using constellations of low-and medium-Earth-orbit satellites is observed. Such systems form regions called mega-cells (see definitions in Refs. [1-3]) that consist of a group of cochannel cells, and clusters of spot beams from each satellite, which move rapidly across the Earth’s surface. In these scenarios only local environmental features such as ionospheric, atmospheric, and terrestrial, which are very close to the desired radio path, contribute significantly to the propagation process. This is because the same propagation
effects, such as multiray reflection, diffraction, and scattering of radio waves, occur in over-the-Earth communication links [4-11].
