Abstract
Frequency sharing in satellite-terrestrial cellular networks can help to achieve increased capacity. However, it has the undesirable effect of generating increased interference due to the introduction of satellite-terrestrial interference paths. In this paper we investigate the factors affecting the carrier-to-interference power ratio (C/I) and the possibilities of achieving an optimum C/I in these networks. It is shown that a proper scaling of some relevant parameters such as EIRP and cell size would help to achieve C/I values comparable to those achievable in satellite-only and terrestrial-only cellular networks. © 2011 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.