超高速太赫兹通信系统中调制方式的探讨  

Discussion of modulation mode for ultra high-speed terahertz communication system

作　　者：孙禹[1] 詹亚锋[1] 陆宇颖 姚建铨[1,2] 

机构地区：[1]清华大学航天航空学院,北京100084 [2]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《现代电子技术》2015年第9期1-8,共8页Modern Electronics Technique

基　　金：国家973项目(2013CB329000);国家自然科学基金资助项目(61271265;61032003;61128001);国家高技术研究发展计划("863计划")基金资助项目(2012AA121605);清华大学自主科研基金资助项目(2011Z05112)

摘　　要：针对传输速率为10 Gb/s太赫兹通信系统,给出了调制方式优选方案。首先详细介绍毫米波、自由空间激光通信中常用调制方式的特性,包括功率有效性、频带利用率、实现复杂度和峰均比;接着介绍太赫兹通信目前采用的调制方式,然后重点讨论在具体实现时,相位噪声、模/数转换器采样率、功率放大器非线性对调制方式选取的影响;最后在链路预算基础上结合具体器件参数,考虑相位噪声和功放非线性因素,对优选调制方式误码率性能进行仿真。The optimization scheme of modulation mode is proposed for 10 Gbps terahertz communication system. The cha-racteristics of some common modulation modes in millimeter wave and free space laser communication are introduced,including power efficiency,band utilization,implementation complexity and peak-to？average power ratio. The modulation modes in current terahertz communication system is also introduced. The effect of phase noise,A/D converter sampling rate and power amplifier nonlinear on the selection of modulation mode is discussed emphatically. The phase noise and nonlinear factors of power amplifier are considered in combination with specific device parameters based on link budget. The bit-error？rate character of the optimization modulation mode is simulated.

关 键 词：太赫兹通信 调制方式 链路预算 相位噪声 非线性功率放大器 

分 类 号：TN928-34[电子电信—通信与信息系统]