面向6G多维扩展的新型多址接入技术综述  

An Overview of Novel Multi-access Techniques for Multi-dimensional Expanded 6G

作　　者：逄小玮 蒋旭 卢华兵 赵楠[1] PANG Xiaowei;JIANG Xu;LU Huabing;ZHAO Nan(School of Information and Communication Engineering,Dalian University of Technology,Dalian 116024,China;School of Information Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China)

机构地区：[1]大连理工大学信息与通信工程学院,大连116024 [2]哈尔滨工业大学(威海)信息科学与工程学院,威海264209

出　　处：《电子与信息学报》2024年第6期2323-2334,共12页Journal of Electronics & Information Technology

基　　金：国家重点研发计划(2020YFB1807002),国家自然科学基金(62101091,62371087),辽宁省应用基础研究计划(2023TH2/101300197)。

摘　　要：随着移动通信技术的不断演进,第6代移动通信(6G)将实现从万物互联到万物智联的跨越,满足更高的数据需求和更广泛的应用场景。新型多址接入技术和多维扩展技术将在6G中协同发挥作用,为构建高效、智能、可靠的通信网络提供关键支持,满足未来通信的多重需求。该文旨在探讨新型多址接入技术在6G多维扩展通信网络中的应用潜力。首先,该文对比了传统多址接入技术与6G潜在新型多址接入技术,并重点阐述了非正交多址接入技术在提升频谱效率和系统容量方面的优势。然后,详细介绍了卫星通信、无人机(UAV)通信和智能反射面(IRS)等多维扩展技术在6G场景下的优势。进一步,讨论了新型多址技术与卫星通信、UAV以及IRS相结合的优势及协同应用。最后,探讨了基于新型多址接入技术的多维扩展网络中的关键技术挑战,包括大规模多入多出技术、太赫兹技术、通感算一体化、用户信息安全、不完美信道状态信息(CSI)估计,同时对新型编码技术、人工智能和机器学习等研究方向进行了展望。With the evolution of mobile communication technology,the Sixth-Generation(6G)wireless networks will achieve a leap from the internet of things to the internet of intelligent things,meeting higher data demands and broader application scenarios.Novel multiple access technologies and multidimensional expansion techniques will jointly play a role in 6G,providing crucial support for building an efficient,intelligent,and reliable communication network to meet the diverse demands of future communications.Therefore,this review paper aims to explore the application potentials of novel multiple access technologies in multidimensional expansion 6G communication networks.Firstly,it compares traditional multiple access technologies with potential novel multiple access technologies in 6G,with a focus on the advantages of non-orthogonal multiple access technology in improving spectral efficiency and system capacity.Then,it provides a detailed introduction to the advantages and functions of multidimensional expansion technologies such as satellite communication,Unmanned Aerial Vehicle(UAV),and Intelligent Reflecting Surface(IRS)in 6G scenarios.Furthermore,the advantages and collaborative applications of novel multiple access technologies in conjunction with satellite communication,UAV,and IRS are discussed.Finally,the paper discusses key technological challenges in a novel multi-dimensional extension network based on new multiple access technologies,including large-scale multiple-input-multiple-output,terahertz technology,integrated sensing,communication,and computing,user information security,and imperfect Channel State Information(CSI)estimation,while also providing prospects for new coding technologies,artificial intelligence and machine learning.

关 键 词：6G移动通信 多维扩展 新型多址接入技术 卫星通信 无人机 智能反射面 

分 类 号：TN915[电子电信—通信与信息系统]