首页|Towards Near-Field Communications for 6G:Challenges and Opportunities

Towards Near-Field Communications for 6G:Challenges and Opportunities

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Extremely large-scale multiple-input multiple-output(XL-MIMO)and terahertz(THz)communications are pivotal candidate tech-nologies for supporting the development of 6G mobile networks.However,these techniques invalidate the common assumptions of far-field plane waves and introduce many new properties.To accurately understand the performance of these new techniques,spherical wave modeling of near-field communications needs to be applied for future research.Hence,the investigation of near-field communication holds significant importance for the advancement of 6G,which brings many new and open research challenges in contrast to conventional far-field communica-tion.In this paper,we first formulate a general model of the near-field channel and discuss the influence of spatial nonstationary properties on the near-field channel modeling.Subsequently,we discuss the challenges encountered in the near field in terms of beam training,localiza-tion,and transmission scheme design,respectively.Finally,we point out some promising research directions for near-field communications.

near-field communicationsextremely large-scale antenna arraysspatial non-stationaritybeam traininglocalization

LIU Mengyu、ZHANG Yang、JIN Yasheng、ZHI Kangda、PAN Cunhua

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Southeast University,Nanjing 210096,China

Queen Mary University of London,London E1 4NS,UK

National Key Research and Development Young Scientist Project国家自然科学基金国家自然科学基金中央高校基本科研业务费专项Research Fund of National Mobile Communications Research Laboratory,Southeast University,China

2023YFB290510062201137623310232242022k600012023A03

2024

10.12142/ZTECOM.202401002

中兴通讯技术(英文版)
中兴通讯股份有限公司,安徽省科技情报研究所

中兴通讯技术(英文版)

影响因子：0.036
ISSN：1673-5188
年,卷(期)：2024.22(1)
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