基于大规模MIMO的低轨卫星通信系统

doi:10.11959/j.issn.2096-8930.2022001

天地一体化信息网络 ›› 2022, Vol. 3 ›› Issue (1): 2-8.doi: 10.11959/j.issn.2096-8930.2022001

所属专题：专题：卫星互联网前沿技术

• 专题：卫星互联网前沿技术 • 上一篇下一篇

基于大规模MIMO的低轨卫星通信系统

李科新¹^,², 尤力¹^,², 高西奇¹^,²

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

修回日期:2022-03-07 出版日期:2022-03-01 发布日期:2022-03-01
作者简介:李科新（1995-），男，东南大学移动通信国家重点实验室博士生，主要研究方向为大规模MIMO无线通信和卫星移动通信
尤力（1987-），男，东南大学移动通信国家重点实验室副研究员，主要研究方向为大规模MIMO无线通信和卫星移动通信
高西奇（1967-），男，东南大学首席教授，移动通信国家重点实验室副主任，主要研究方向为大规模MIMO无线通信、卫星移动通信、光无线通信、移动通信信号处理等
基金资助:
国家重点研发计划项目(2018YFB1801103);江苏省前沿引领技术基础研究专项(BK20192002);国家自然科学基金项目(61801114);国家自然科学基金项目(61801113);国家自然科学基金项目(61975234);国家自然科学基金项目(61960206006);国家自然科学基金项目(61971136)

Massive MIMO LEO Satellite Communications System

Kexin LI¹^,², Li YOU¹^,², Xiqi GAO¹^,²

¹ National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
² Purple Mountain Laboratory, Nanjing 211111, China

Revised:2022-03-07 Online:2022-03-01 Published:2022-03-01
Supported by:
The National Key Research and Development Program of China(2018YFB1801103);The Jiangsu Province Basic Research Project(BK20192002);The National Natural Science Foundation of China(61801114);The National Natural Science Foundation of China(61801113);The National Natural Science Foundation of China(61975234);The National Natural Science Foundation of China(61960206006);The National Natural Science Foundation of China(61971136)

摘要/Abstract

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。

关键词: 低地球轨道卫星, 大规模多输入多输出, 卫星通信

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.

Key words: LEO satellite, massive MIMO, satellite communication

中图分类号:

TP393

李科新, 尤力, 高西奇. 基于大规模MIMO的低轨卫星通信系统[J]. 天地一体化信息网络, 2022, 3(1): 2-8.

Kexin LI, Li YOU, Xiqi GAO. Massive MIMO LEO Satellite Communications System[J]. Space-Integrated-Ground Information Networks, 2022, 3(1): 2-8.

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基于大规模MIMO的低轨卫星通信系统

Massive MIMO LEO Satellite Communications System

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