北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2024, Vol. 47 ›› Issue (5): 1-13.doi: 10.13190/j.jbupt.2024-098

• 综述 •    下一篇

面向6G的新形态MIMO技术

王莹1,2,袁野2,陈源彬1   

  1. 1. 北京邮电大学网络与交换国家重点实验室
    2. 北京邮电大学信息与通信工程学院


  • 收稿日期:2024-04-14 修回日期:2024-06-13 出版日期:2024-10-28 发布日期:2024-11-10
  • 通讯作者: 王莹 E-mail:wangying@bupt.edu.cn

A Review of New MIMO Technologies in 6G

Ying WANG1,2,Ye YUAN2,Yuanbin Chen1   

  1. 1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications
    2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications
  • Received:2024-04-14 Revised:2024-06-13 Online:2024-10-28 Published:2024-11-10
  • Contact: Ying WANG E-mail:wangying@bupt.edu.cn

摘要:

旨在探讨新形态多输入多输出(MIMO)技术在面向第 6 代移动通信系统(6G)中的演进及其挑战。 新形态
MIMO 技术呈现出更大阵列孔径和更密集阵列元件的趋势,涵盖超大规模 MIMO、全息 MIMO 和超大规模智能超表
面等多种形式。 通过分析这些技术,研究了其在远场与近场信道建模、近场信道估计及波束赋形方案中的应用现
状与进展。 结果表明,随着通信频段向毫米波和太赫兹等高频段拓展,瑞利距离的扩展导致近场效应显著增加,各
种新形态 MIMO 技术在应对这些挑战中展现出了独特优势。 最后总结了新形态 MIMO 技术未来的研究方向及其
在提升 6G 性能中的潜在贡献。

关键词: 新形态多输入多输出, 信道建模, 信道估计, 波束赋型

Abstract:

The evolution and challenges of new forms of multiple-input and multiple-output ( MIMO)
technologies in the context of the sixth generation of mobile communications system (6G) are explored.
Emerging MIMO technologies exhibit trends toward larger array apertures and denser array elements,
encompassing forms such as ultra-large-scale MIMO, holographic MIMO, and ultra-massive intelligent
metasurfaces. By analyzing these technologies, the study investigates their current applications and
advancements in far-field and near-field channel modeling, near-field channel estimation and
beamforming schemes. The results demonstrate that as the communication frequency band expands into
higher bands such as millimeter waves and terahertz waves, the extension of the Rayleigh distance leads
to significantly increased near-field effects, and various new forms of MIMO technologies have shown
unique advantages in addressing these challenges. The future research directions for emerging MIMO
technologies and their potential contributions to enhancing 6G performance are summarized in the
conclusion.

Key words: New-modal MIMO, channel modeling, channel estimation, beamforming

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