面向6G的高速太赫兹无线通信系统与关键技术验证  

High Speed Terahertz Wireless Communication System and Key Technology Verification for 6G

作　　者：董博宇 冯叶青 李国强[1] 贾俊连 张俊文[1] 付杰尉 迟楠[1] 朱伏生 DONG Boyu;FENG Yeqing;LI Guoqiang;JIA Junlian;ZHANG Junwen;FU Jiewei;CHI Nan;ZHU Fusheng(Key Laboratory for Information Science of Electromagnetic Waves,Ministry of Education Fudan University,Shanghai 200433,China;Guangdong Communications&Networks Institute,Guangzhou 510663,China)

机构地区：[1]复旦大学电磁波信息科学教育部重点实验室,上海200433 [2]广东省新一代通信与网络创新研究院,广东广州510663

出　　处：《无线电通信技术》2024年第1期34-40,共7页Radio Communications Technology

基　　金：国家自然科学基金(62235005,62171137,61925104);上海市自然科学基金(21ZR1408700)。

摘　　要：太赫兹通信以其可提供更高速、更大容量和更安全的数据传输的独特优势,在未来6G中成为重要的关键技术之一。基于固态电子的太赫兹通信系统存在带宽受限、频谱响应不平坦等问题,需要先进的信号形式结合灵活高效的处理方法来提升系统性能。搭建了基于固态电子的G波段太赫兹无线通信系统,通过采用比特-功率加载的离散多音(Bit and Power Loading-Discrete Multitone, BPL-DM)调制技术,实现了对系统频谱资源的有效利用;通过对通信速率的灵活调整、自适应削波和基于三阶多项式的后均衡技术,解决了峰值功率约束带来的挑战,提升了整体传输性能,实现了在195 GHz中心频率下,单通道130 Gbit/s的通信线路速率。基于以上技术,为进一步提升系统容量,搭建了4×4的多输入多输出(Multiple-Input Multiple-Output, MIMO)太赫兹通信系统,总线路速率超过399 Gbit/s。In future 6G,terahertz communication will become one important key technology due to its unique advantages of providing faster speed,larger capacity,and safer data transmission.However,terahertz communication systems based on solid-state electronics have issues such as bandwidth limitations and uneven spectrum,requiring advanced signal forms combined with flexible and efficient processing methods to improve system performance.In this study,a G-band terahertz wireless communication system based on solid-state electronics was constructed.To address these challenges,the use of discrete multitone modulation with Bit and Power Loading-Discrete Multitone(BPL-DM)Technology was implemented,enabling effective utilization of system spectrum resources and flexible adjustment of data rate.Adaptive clipping and post-equalization technology based on third-order polynomials were employed to overcome peak power constraints,thereby improving overall transmission performance.Experimental verification achieved a single channel line data rate of 130 G bit/s at a center frequency of 195 GHz.Based on these technologies,a 4×4 Multiple-Input Multiple-Output(MIMO)terahertz communication system was developed in order to enhance system capacity,attaining a total line speed of over 399 Gbit/s.

关 键 词：太赫兹无线通信 多输入多输出 离散多音调制 比特-功率加载 自适应削波 

分 类 号：TN919.23[电子电信—通信与信息系统]