Broadband Multi-Satellite/Multi-Beam System with Single Frequency Reuse

This paper studies a multi-satellite multi-beam system with single frequency reuse which applies the MIMO (Multi Input Multi Output) technique. To improve the spectral efficiency of satellite systems in support of broadband communications, MIMO is the one of the most important approaches. Since it was difficult to achieve high spectral efficiency by simply combining a multi-beam system with single frequency reuse and a multiple satellite system, this paper newly proposes a pre- coding technique that takes account of the frequency offsets caused by the multiple satellites. We then evaluate our proposal by a cumulative distribution function (CDF) related to channel capacity and show the improvement of the spectral efficiency compared to the conventional satellite systems.