21km,5Gbps,0.14THz无线通信系统设计与试验  

Design and tests of 21 km,5 Gbps,0.14 THz wireless communication system

作　　者：吴秋宇[1,2] 林长星[1,2] 陆彬[1,2] 缪丽[1,2] 邓贤进[1,2] 周浏阳 陈洪斌[3] 蒋艺[3] 姚军[1,2] 张健[1,2] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621900 [2]中国工程物理研究院微系统与太赫兹研究中心,成都610200 [3]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2017年第6期1-4,共4页High Power Laser and Particle Beams

摘　　要：设计了工作在太赫兹频段的无线通信系统,基带部分采用16QAM调制体制,射频部分采用混频器实现两级上下变频,功放部分采用"固态功率放大+电真空器件放大"级联的功率放大技术,实现了0.14THz频段W量级的功率输出。接收端采用全固态常温接收技术,接收机等效噪声温度为1100K,接收灵敏度达到-57dBm。采用两个增益50dBi的卡塞格伦天线,在成都市双流区与新津县之间开展了距离21km的无线通信试验,单路实时通信速率达到5Gbps,误码率低于10^(-6)。并成功同时实时传输了两路符合HD-SDI标准的无压缩高清视频数据流,每一路的标准有效速率达到1.485Gbps。A terahertz wireless communication system is designed. The 16QAM modulation scheme is used in baseband processing, and mixers are used for cascading frequency up and down-converting. Cascading power amplification technique is adopted with a solid-state power amplifier and a vacuum electronic device. Several watts power is emitted at 0.14 THz. An all solid-state receiver running in room temperature is used, whose equivalent noise temperature is 1100 K and receiving sensitivity is -57 dBm. A 21 km wireless communication testing is carried out between the Shuangliu district and the Xinjin county of Chengdu, by means of two Cassegrain antennas with 50 dBi gain each. A 5 Gbps single-channel transmission speed is measured with bit error rate below 10^-6. For testing, two standard HD-SDI uncompressed video streams are successfully transmitted in real time simultaneously, with an effective speed of 1.485 Gbps for each one.

关 键 词：太赫兹 无线通信 通信系统 通信试验 远距离通信 

分 类 号：TN92[电子电信—通信与信息系统]