无线纳米网中太赫兹电磁波传输特性分析  

Propagation Model of Electromagnetic Nanonetworks in Terahertz Band

作　　者：王万良[1] 吴腾超[2] 姚信威[1] 李伟琨[1] 陈超[1] 

机构地区：[1]浙江工业大学计算机科学与技术学院,杭州310023 [2]浙江工业大学信息工程学院,杭州310023

出　　处：《计算机科学》2015年第12期207-211,共5页Computer Science

基　　金：国家自然科学基金资助项目(61402414;61379123);"十二五"国家科技支撑计划课题资助项目(2012BAD10B01);浙江省教育厅科研项目资助项目(Y201431815);浙江省基金资助项目(LQ14F020005)资助

摘　　要：针对基于太赫兹通信的电磁纳米网络,深入分析太赫兹电磁波路径传输特性以及大气分子吸收特性,从能耗的角度构建太赫兹信道传输的数学模型。分别针对不带反射路径的传输场景和带有反射路径的传输场景来分析路径传输特性;利用大气辐射原理来分析大气分子吸收特性。在不同传输距离和传输频率下,结合路径传输和大气分子吸收对太赫兹电磁波传输能量损耗进行仿真。结果表明:分子吸收损耗是太赫兹电磁波传输能量损耗的重要组成部分,大气分子吸收损耗与传输介质分子组成有关;路径传输损耗受到传输频率和距离的影响。分析结果对太赫兹通信频段的选择以及纳米节点能耗设计有重要参考价值。For the purpose of Terahertz Band （THz） communication based electromagnetic nanonetworks,an analytical THz channel model from the aspect of energy consumption was proposed, by considering the peculiarities of path loss and molecular absorption in the propagation of THz band. Two different scenarios with or without reflection path were adopted to analyze the influence of path loss in the THz band, respectively. For the analysis of peculiarities of molecular absorption, the theory of atmospheric radiation was adopted. In detail, energy consumption of THz communication combined with the path loss and atmospheric molecular absorption was presented with different transmission distances and frequencies. The results demonstrate that the energy consumption for molecular absorption is an important element for the total ener-gy consumption of electromagnetic wave in the THz band, and atmospheric molecular absorption is decided by the composition of molecular in transmission medium,while the energy consumption for path loss is affected by the transmission frequency and distance. The analytical results have an important reference value for the design of nanonode and the selection of transmission frequency.

关 键 词：太赫兹通信 能量损耗 纳米网 路径损失 分子吸收 

分 类 号：TN928[电子电信—通信与信息系统]