A Review of New MIMO Technologies in 6G

doi:10.13190/j.jbupt.2024-098

Journal of Beijing University of Posts and Telecommunications ›› 2024, Vol. 47 ›› Issue (5): 1-13.doi: 10.13190/j.jbupt.2024-098

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A Review of New MIMO Technologies in 6G

Ying WANG^1,2,Ye YUAN²,Yuanbin Chen¹

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

Abstract

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

CLC Number:

TN929.5

WANG Ying , YUAN Ye , CHEN Yuanbin .

A Review of New MIMO Technologies in 6G

[J]. Journal of Beijing University of Posts and Telecommunications, 2024, 47(5): 1-13.

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A Review of New MIMO Technologies in 6G

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