Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication

Xinjie ZHAO; Ziwei LIU; Gengxin ZHANG

doi:10.11959/j.issn.2096-8930.2022048

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Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication

Special Issue: Information Transmission Technology for Satellite-Terrestrial Integration | 更新时间：2024-06-03

- Overview of OTFS Based Channel Estimation Techniques in LEO Satellite Communication
- Space-Integrated-Ground Information Networks Vol. 3, Issue 4, Pages: 101-106(2022)
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- DOI：10.11959/j.issn.2096-8930.2022048
  CLC： TN927+.2
- Published Online：2022-12，
  
  Published：20 December 2022
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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：

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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references

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