太赫兹轨道角动量通信关键技术与挑战  

Key Technologies and Challenges of Terahertz Orbital Angular Momentum Communication

作　　者：杨航[1,2] 郑史烈 张红旗[1,2] 李楠 何通 杨作民[1,2] 吕治东 贺宇千 张鹿 余显斌 YANG Hang;ZHENG Shilie;ZHANG Hongqi;LI Nan;HE Tong;YANG Zuomin;LV Zhidong;HE Yuqian;ZHANG Lu;YU Xianbin(Zhejiang University Hangzhou 310058,China;Zhejiang Lab,Hangzhou 311121,China)

机构地区：[1]浙江大学,浙江杭州310058 [2]之江实验室,浙江杭州311121

出　　处：《移动通信》2023年第5期20-25,共6页Mobile Communications

基　　金：国家重点研发计划基金资助项目(2018YFB2201700);之江实验室科研攻关项目(2020LC0AD01);浙江省自然科学基金(LY23F010006)。

摘　　要：面对日益紧张的频谱资源与众多新兴应用对更高通信速率的要求,THz与OAM作为突破当前通信系统瓶颈的关键技术而广受关注。将两者结合的THz-OAM技术不仅继承了两者的优点,也面临着一些重要挑战。综述了OAM在通信领域的研究进展,展现了其提高通信容量与丰富通信维度的特有优势;研究了OAM波束在多径、大气湍流等环境下的传输特性及其应对方法,用于完善THz-OAM信道的通用模型;总结了THz-OAM通信系统面临的挑战,为6G通信技术的发展和应用提供参考。In the face of the growing demand for higher communication rates due to the increasingly scarce spectrum resources and the numerous emerging applications,terahertz(THz)and orbital angular momentum(OAM)have gained widespread attention as key technologies for breaking through the bottleneck of current communication systems.THz-OAM technology,which combines both,not only inherits the advantages of both technologies but also faces some significant challenges.This paper reviews the research progress of OAM in the communication field,showcasing its unique advantages in improving communication capacity and enriching communication dimensions.It investigates the transmission characteristics of OAM beams in environments with multipath and atmospheric turbulence,proposing corresponding countermeasures to improve the universal model of THz-OAM channels.It also summarizes the challenges faced by THz-OAM communication systems,providing references for the development and application of 6G communication technology.

关 键 词：太赫兹 轨道角动量 太赫兹通信 轨道角动量通信 

分 类 号：TN929[电子电信—通信与信息系统]