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首页> 外文期刊>NTT R&D >Inter-Satellite Communication for LEO CubeSat Network: QoS Parameters and Feasibility of Massive MIMO
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Inter-Satellite Communication for LEO CubeSat Network: QoS Parameters and Feasibility of Massive MIMO

机译：LEO CubeSat网络的星际通信：QoS参数和大规模MIMO的可行性

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This paper evaluates inter-satellite communication for a low earth orbit CubeSat network. This paper consists of two parts: determination and estimation of quality of service (QoS) parameters and evaluation of the feasibility of a Massive Multiple Input Multiple Output (MIMO) system for inter-satellite links. CubeSats are low-cost and small satellites that were initially designed by students during the educational process but are now launched for conducting space research and for commercial use. Recently, some companies and research studies promoted CubeSats to build a wireless communication networks for different proposes, such as earth observation, weather forecasting, providing access to the internet, internet of things and machine to machine services. The main distinguishing features of a CubeSat network include low-cost and fast deployment with a consequent advantage: the possibility to build a large network (hundreds of spacecraft) with limited resources. However, due to the limited size and function of CubeSats, the feasibility of a CubeSat network with inter-satellite links is debatable. In this paper, we investigate the QoS parameters for an inter-satellite link and factors affecting it. The theoretical design with a constructive drawing of massive MIMO has been made. The possibility and time duration of inter-satellite communication has been calculated for three different cases using real data and including Massive MIMO. The simulation of orbit movements for groups of CubeSats has been made. The correlation between relative positions of satellites in orbits, parameters of communication channels and the QoS was determined. The feasibility of massive MIMO for CubeSat communications has been estimated. Based on simulation results, suggestions and possible technical and non-technical solutions were highlighted together with future studies and simulations.
机译：本文评估了低地球轨道CubeSat网络的卫星间通信。本文由两部分组成：确定和估计服务质量（QoS）参数，以及评估用于卫星间链路的大规模多输入多输出（MIMO）系统的可行性。 CubeSats是低成本的小型卫星，最初是由学生在教育过程中设计的，但现在被发射用于进行空间研究和商业用途。最近，一些公司和研究促进了CubeSats为不同的建议构建无线通信网络，例如地球观测，天气预报，提供对Internet，物联网和机器对机器服务的访问。 CubeSat网络的主要区别特征包括低成本和快速部署，因此具有以下优势：可以用有限的资源建立大型网络（数百个航天器）。但是，由于CubeSat的大小和功能有限，带有卫星间链接的CubeSat网络的可行性尚待商bat。在本文中，我们研究了星际链路的QoS参数及其影响因素。进行了具有大规模MIMO构造图的理论设计。卫星间通信的可能性和持续时间已经针对三种不同情况使用实际数据进行了计算，包括大规模MIMO。模拟了立方体卫星群的轨道运动。确定了卫星在轨道上的相对位置，通信信道参数和QoS之间的相关性。已经估计了大规模MIMO用于CubeSat通信的可行性。根据仿真结果，对建议以及可能的技术和非技术解决方案以及未来的研究和仿真进行了重点介绍。

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