Massive MIMO LEO Satellite Communications System

Kexin LI; Li YOU; Xiqi GAO

doi:10.11959/j.issn.2096-8930.2022001

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Massive MIMO LEO Satellite Communications System

Special Issue: Frontier Technologies of Satellite Internet | 更新时间：2024-06-03

- Massive MIMO LEO Satellite Communications System
- Space-Integrated-Ground Information Networks Vol. 3, Issue 1, Pages: 2-8(2022)
- 作者机构：
  
  1. 东南大学移动通信国家重点实验室，江苏南京 210096
  2. 紫金山实验室，江苏南京 211111
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-8930.2022001
  CLC： TP393
- Published Online：2022-03，
  
  Published：20 March 2022
- 稿件说明：
移动端阅览
Kexin LI, Li YOU, Xiqi GAO. Massive MIMO LEO Satellite Communications System[J]. Space-integrated-ground information networks, 2022, 3(1): 2-8.
DOI：

Kexin LI, Li YOU, Xiqi GAO. Massive MIMO LEO Satellite Communications System[J]. Space-integrated-ground information networks, 2022, 3(1): 2-8. DOI： 10.11959/j.issn.2096-8930.2022001.

摘要

将大规模多输入多输出（MIMO）技术拓展应用于低地球轨道（低轨）卫星通信系统，使得卫星具备实施灵活波束成形的能力，这样能够充分利用大规模MIMO的空间自由度，显著提高LEO卫星通信系统的频谱效率和功率效率。对基于大规模MIMO的LEO卫星通信系统中的若干相关问题进行研究，分析大规模MIMO LEO卫星信道的特性，并揭示其与地面无线信道的重要区别。针对大规模MIMO LEO卫星通信中的信道信息获取、多用户传输和用户调度等问题，讨论当前工作面临的主要困难，并探讨如何利用大规模MIMO LEO卫星信道特性针对性地设计具有较低实现复杂度的解决方案。

Abstract

Extending massive multiple-input multiple-output (MIMO) technique to low earth orbit (LEO) satellite communication systems enables satellites to implement fl exible beamforming

which can make full use of the spatial degrees of freedom of massive MIMO and signifi cantly improve the spectral effi ciency and energy effi ciency of LEO satellite communication systems.Several related issues in massive MIMO-based LEO satellite communication systems were studied.The characteristics of massive MIMO LEO satellite channels were analyzed.The important diff erences between them and terrestrial wireless channels were revealed.With the aim of addressing the problems on channel information acquisition

multi-user transmission and user scheduling in massive MIMO LEO satellite communication

the main difficulties faced by the current work were discussed

and how to use the characteristics of massive MIMO LEO satellite channels to design tailored solutions with low implement complexity was conceived.

关键词

Keywords

references

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