Low Earth Orbit High-Throughput Satellite Multibeam Design Schemes

Abstract

In the low earth orbit high-throughput satellite, multibeam technology plays an indispensable role in increasing capacity and the low orbit has the remarkable advantage of low latency. A large number of researchers use the low earth orbit and high-throughput satellite constellation in the Internet of Things (IoT), in order to improve the performance of IoT service. In this paper, we focus on the multibeam design of low earth orbit high-throughput satellite. First, the common cellular structure beam design is studied and then we present a ring beam design scheme. Comparing with the cellular structure beam design, it has better performance at the center area and uses less number of spot beams to cover the same area. Based on that, we improve the ring beam design to enhance the cell edge performance and decrease the number of spot beams in coverage. We believe that the development and exploitation of these beam designs may help in making satellite constellation more attractive and competitive in the near future.