Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications

Xin SU; Sen WANG; Hongwen YANG; Jing JIN; Qixing WANG

doi:10.11959/j.issn.1000-0801.2021222

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Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications

Topic: 6G | 更新时间：2024-06-05

- Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications
- Telecommunications Science Vol. 37, Issue 9, Pages: 38-47(2021)
- 作者机构：
  
  1. 中国移动通信有限公司研究院，北京 100053
  2. 北京邮电大学，北京 100876
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2021222
  CLC： TP393
- Published Online：2021-09，
  
  Published：20 September 2021
- 稿件说明：
移动端阅览
Xin SU, Sen WANG, Hongwen YANG, et al. Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications[J]. Telecommunications science, 2021, 37(9): 38-47.
DOI：

Xin SU, Sen WANG, Hongwen YANG, et al. Faster-than-Nyquist signaling: value and challenges of 6G-oriented applications[J]. Telecommunications science, 2021, 37(9): 38-47. DOI： 10.11959/j.issn.1000-0801.2021222.

摘要

超奈奎斯特（FTN）传输技术通过压缩发送符号时域/频域间隔，在一个符号周期内重叠发送多流数据，从而打破了奈奎斯特脉冲波形的正交性，实现了在有限带宽内传输更多数据的目的。首先，阐述了FTN的技术原理，梳理了其发展现状；其次，分析相关的关键性问题——明确了FTN容量与香农容量的关系，以及相关技术的内在联系；最后，讨论了 FTN在 6G通信中的应用可能性，提出了其应用价值和挑战：FTN 是一种可逼近香农容量的高谱效传输方案，但接收机复杂度过高可能成为其在 6G 应用中的关键阻碍。

Abstract

The faster-than-Nyquist (FTN) signaling technology overlaps multiple streams of data within a symbol period by compressing the transmit symbol time/frequency-domain interval

thus breaking the orthogonality of the Nyquist pulse waveform and achieving the purpose of transmitting more data in a limited bandwidth.A relatively comprehensive explanation of the technical principles of FTN was elaborated

its development status was sorted out

and the related key questions——the relationship between FTN capacity and Shannon capacity

and the intrinsic connection of related technologies were answered.Finally

The possibility of FTN application in 6G was discussed

and its value and challenges in 6G were presented.That is

FTN is a highly spectrally efficient transmission scheme that approximates Shannon's capacity

but excessive receiver complexity may be a key impediment to its use in 6G applications.

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Keywords

references

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