Interference Modeling and Analysis for Inclined Projective Multiple Beams of GEO Satellite Communication Systems

Abstract

In multi-beam satellite systems, inter-beam interference has a great effect on system performance. Within range of satellite coverage area, inclined projective multiple beams give rise to elliptic beam projections, resulting in that the distribution of beam projections is different from traditional cellular distribution. In this paper, an inclined projection model is proposed for inter-beam interference in OFDMA based GEO satellite communication systems, and corresponding analysis is also included. A comparison of carrier to interference power ratio (C/I) of users at the center of each cell with and without the consideration of inclined projections is made, based on the simulation using different frequency reuse factor. The corresponding conclusions are presented. This research can provide reference for later satellite beam planning.