基于概率整形的离散傅里叶变换扩展的300 GHz OFDM太赫兹无线传输系统  

300 GHz OFDM electronic terahertz wireless transmission based on PS and DFT-S

作　　者：姜璐涵 马晗松 张沁旖 田鹏 韩扬 王明旭 谭景文 徐思聪 张冰 Rehim Uddim 魏怡 杨雄伟 李韦萍 余建军[1] JIANG Lu-Han;MA Han-Song;ZHANG Qin-Yi;TIAN Peng;HAN Yang;WANG Ming-Xu;TAN Jing-Wen;XU Si-Cong;ZHANG Bing;Uddim Rehim;WEI Yi;YANG Xiong-Wei;LI Wei-Ping;YU Jian-Jun(State Key Laboratory of ASIC and System,Key Laboratory for Information Science of Electromagnetic Waves(MoE),School of Information Science and Technology,Fudan University,Shanghai 200433,China)

机构地区：[1]专用集成电路与系统国家重点实验室,复旦大学电磁波信息科学教育部重点实验室,复旦大学信息科学与工程学院,上海200433

出　　处：《红外与毫米波学报》2024年第5期634-641,共8页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金资助项目(62305067,61935005,61835002,62375219,62331004)。

摘　　要：为了适应高速大容量的通信需求,提出了采用基于概率整形(PS,Probabilistic Shaping),离散多音调制(DMT,Discrete Multi-tone Modulation)和离散傅里叶变换扩展技术(DFT,Discrete Fourier Transform)实现300GHz太赫兹信号无线传输。概率整形通过增加星座点距离提升信号接收机灵敏度,可最多降低55%的误码率,可延长传输距离。离散傅里叶变换扩展技术在系统中降低1.68 dB正交频分复用(OFDM,Orthogonal Frequency Division Multiplexing)信号的峰均比,提升抗非线性效应能力。通过结合这些先进的数字信号处理技术,分别实现了12GBaud PS-16QAM的OFDM-DMT信号及10GBaud PS-64QAM的DFT-S-OFDM-DMT信号1 m无线传输。基于300GHz的太赫兹无线传输系统,比较了采用这些数字信号处理技术的性能优势。To meet the high-speed and high-capacity demands of communication,a 300GHz electronic wireless trans-mission system for terahertz frequencies is proposed,which incorporates Probability Shaping(PS),Discrete Multi-tone Modulation(DMT)and DFT-Spread(DFT-S)techniques.PS increases the Euclidean distance between constellation points,thereby enhancing the receiver sensitivity.In the system at most 55%bit error rate is decreased,enabling to ex-tend transmission range.DFT-S technique reduces 1.68 dB peak-to-average power ratio of Orthogonal Frequency Divi-sion Multiplexing(OFDM)signals in the system,thus improving their resistance to nonlinear effects.By integrating these advanced digital signal processing techniques,12GBaud PS-16QAM OFDM-DMT signals and 10GBaud PS64QAM DFT-S-OFDM-DMT signals were successfully implemented in 1 m wireless transmission.Finally,the perfor-mance advantages of these digital signal processing techniques were compared.

关 键 词：概率整形 正交频分复用技术 离散多音调制 离散傅里叶变换扩展技术 太赫兹通信 

分 类 号：TN92[电子电信—通信与信息系统]