大容量长距离光子太赫兹无线传输演示  

Experimental Demonstration of Large-Capacity and Long-Distance Photonics-Assisted Terahertz Wireless Communication Systems

作　　者：丁俊杰 童伟东 朱敏 蔡沅成 华炳昌 雷明政 张教 DING Junjie;TONG Weidong;ZHU Min;CAI Yuancheng;HUA Bingchang;LEI Mingzheng;ZHANG Jiao(Purple Mountain Laboratories,Nanjing 211111,China;National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China)

机构地区：[1]紫金山实验室,江苏南京211111 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《移动通信》2024年第12期2-8,38,共8页Mobile Communications

基　　金：国家自然科学基金青年科学基金“面向6G的大容量长距离光载太赫兹融合通信系统研究”(62405384);国家自然科学基金面上项目“Tbps量级太赫兹光纤一体融合通信系统关键技术的研究”(62271135);国家自然科学基金青年科学基金“基于光子学的毫米波通信感知深度融合机理”(62201393);国家自然科学基金青年科学基金“面向6G的光子太赫兹无线通信系统研究”(62201397);国家重点研发项目“Tbps太赫兹光纤一体融合通信系统与关键技术”(2023YFB2905600);江苏省自然科学基金面上项目“Tbps太赫兹光纤一体融合通信系统与关键技术”(BK20221194);江苏省自然科学基金青年科学基金“面向B5G的光子毫米波通信感知一体化关键技术研究”(BK20220210)。

摘　　要：太赫兹通信因其丰富的频谱资源已成为未来6G发展的重要技术。光子辅助技术可突破电子设备带宽限制,生成高载频、大带宽、灵活可调的太赫兹信号,而且能有效地促进光纤网络和无线网络的无缝融合。实验方案采用正交频分复用技术,高增益太赫兹模块包括高太赫兹透镜和太赫兹低噪声放大器,并设计了一种低复杂度的非线性均衡算法。基于MIMO复用和概率整形技术实现了传输容量达253Gbit/s、传输距离达200m的光子辅助太赫兹无线传输,空口速率·距离积达253Gbit/s×200m=50.6Gbit/s·km;基于MIMO分集和最大比合并技术实现了传输容量达137Gbit/s、传输距离达200m的光子辅助太赫兹无线传输,相比SISO链路的SNR增益高达5.1dB。Terahertz communication has become a key technology for the future development of 6G due to its abundant spectrum resources.Photonics-aided technology can overcome the bandwidth limitations of electronic devices,generate flexibly adjustable terahertz signals with high carrier frequencies and wide bandwidth,and thus effectively facilitate the seamless integration of fiber-optic wired and wireless networks.The experimental setup utilizes orthogonal frequency division multiplexing(OFDM)technology,high-gain terahertz modules,including terahertz lenses and terahertz low-noise amplifiers(LNA),as well as a low-complexity nonlinear equalization algorithm.By employing MIMO multiplexing and probabilistic shaping(PS)techniques,a photonic-aided terahertz wireless transmission system achieves a transmission capacity of 253 Gbit/s over a distance of 200 m resulting in an air-interface rate-distance product of 253 Gbit/s×200 m=50.6 Gbit/s-km.Additionally,utilizing MIMO diversiTerahertz communication has become a key technology for the future development of 6G due to its abundant spectrum resources.Photonics-aided technology can overcome the bandwidth limitations of electronic devices,generate flexibly adjustable terahertz signals with high carrier frequencies and wide bandwidth,and thus effectively facilitate the seamless integration of fiber-optic wired and wireless networks.The experimental setup utilizes orthogonal frequency division multiplexing(OFDM)technology,high-gain terahertz modules,including terahertz lenses and terahertz low-noise amplifiers(LNA),as well as a low-complexity nonlinear equalization algorithm.By employing MIMO multiplexing and probabilistic shaping(PS)techniques,a photonic-aided terahertz wireless transmission system achieves a transmission capacity of 253 Gbit/s over a distance of 200 m resulting in an air-interface rate-distance product of 253 Gbit/s×200 m=50.6 Gbit/s-km.Additionally,utilizing MIMO diversity and maximum ratio combining techniques,the photonic-aided terahertz wireless transmission s

关 键 词：光子辅助太赫兹通信 正交频分复用 MIMO复用 MIMO分集 非线性均衡 

分 类 号：TN929.1[电子电信—通信与信息系统] O441.4[电子电信—信息与通信工程]