低轨卫星通信中基于OTFS的信道估计技术综述

赵鑫杰; 刘子威; 张更新

doi:10.11959/j.issn.2096-8930.2022048

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低轨卫星通信中基于OTFS的信道估计技术综述

专题：面向星地融合的信息传输技术 | 更新时间：2024-06-03

- 低轨卫星通信中基于OTFS的信道估计技术综述
- Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication
- 天地一体化信息网络 2022年3卷第4期页码：101-106
- 作者机构：
- 作者简介：
  
  [ "赵鑫杰（1998-），男，南京邮电大学通信与信息工程学院博士生，主要研究方向为卫星通信、空间信息网络等" ]
  [ "刘子威（1989-），南京邮电大学通信与信息工程学院副教授，主要研究方向为卫星通信中的多用户检测、非正交接入技术等" ]
  [ "张更新（1967-），男，南京邮电大学通信与信息工程学院教授，主要研究方向为空间信息网络、卫星通信等" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(62171234);国家自然科学基金资助项目;The National Natural Science Foundation of China(U21A20450);国家自然科学基金资助项目;The National Natural Science Foundation of China(61971440);江苏省前沿引领技术基础研究专项;Jiangsu Province Basic Research Project(BK20192002)
- DOI：10.11959/j.issn.2096-8930.2022048
  中图分类号： TN927+.2
- 网络出版日期：2022-12，
  
  纸质出版日期：2022-12-20
- 稿件说明：
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赵鑫杰, 刘子威, 张更新. 低轨卫星通信中基于OTFS的信道估计技术综述[J]. 天地一体化信息网络, 2022,3(4):101-106.

Xinjie ZHAO, Ziwei LIU, Gengxin ZHANG. Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication[J]. Space-integrated-ground information networks, 2022, 3(4): 101-106.
赵鑫杰, 刘子威, 张更新. 低轨卫星通信中基于OTFS的信道估计技术综述[J]. 天地一体化信息网络, 2022,3(4):101-106. DOI： 10.11959/j.issn.2096-8930.2022048.

Xinjie ZHAO, Ziwei LIU, Gengxin ZHANG. Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication[J]. Space-integrated-ground information networks, 2022, 3(4): 101-106. DOI： 10.11959/j.issn.2096-8930.2022048.

摘要

随着科技的发展和相关技术的不断完善，低轨卫星通信已经成为世界各国争相追逐的技术热点。正交时频空技术的优势可以很好地解决高移动速度场景下宽带星地链路的信号传输问题，有利于卫星、地面之间调制波形的统一，实现空天地一体化通信。但是，其传输性能受到信道估计精度影响，而特殊的调制方式使得其信道估计方法不同于传统技术，需要着重进行研究。对现有主流的OTFS信道估计方案进行相关介绍，分析各种方案的优势与不足，为后续研究奠定基础。

Abstract

With the development of science and technology and the continuous improvement of related technologies

low earth orbit (LEO) satellite communication has become a hot technology that countries all over the world are chasing.The advantages of orthogonal time frequency spacetechnology can well solve the signal transmission problem of broadband satellite ground link in high moving speed scenarios

which is conducive to the unifi cation of modulation waveforms between satellites and the ground

and the realization of space-based integrated communication.However

its transmission performance is aff ected by the accuracy of channel estimation

and the special modulation makes its channel estimation method diff erent from the traditional technology

so it needs to be studied.The existing mainstream OTFS channel estimation schemes are introduced

and the advantages and disadvantages of each scheme were analyzed

which laied a foundation for subsequent research.

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Keywords

references

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