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纳米网络中的太赫兹波大气传输和信道分析

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摘要

利用太赫兹大气传输衰减模型, 比对太赫兹时域光谱系统的实验结果, 结合最新的HITRAN数据库, 发展了一个适用于纳米尺度的太赫兹信道分析模型。提出了一个0.1~5 THz宽的信道, 分析了此信道在纳米尺度的传输损耗和最大传输数据率。研究结果表明, 在纳米尺度0.1~5 THz宽的信道的传输数据率达几百Gbit/s, 随着天线增益等硬件性能的不断提升, 信道的最大传输数据率将达Tbit/s, 此研究对于纳米器件之间的快速、大数据量的信息共享具有重要的参考价值。

Abstract

Terahertz (THz) communications are expected to be the next frontier for wireless nanonetworks. Nanonetworks are formed by nanodevices (tiny devices at the nanoscale or molecular scale). The high transmittable data rate for nanonetwork is investigated based on a new model of the THz wave atmospheric propagation of attenuation. The THz wave atmospheric attenuation experimental results obtained from the THz-time domain spectroscopy (THz-TDS) technique are analyzed using this model. The intensity and location of the observed absorption lines are in good agreement with the calculated spectrum. The total path loss and the maximum transmittable data rate are numerically simulated when a THz wave propagates over an extremely short distance. Furthermore, the channel capacity in the THz band (0.1-5 THz) is investigated by this mode. It is shown that the molecular absorption loss is significant in THz band; data with high rates of more than 100 Gbit/s, which take advantage of the unique characteristics in the physical channels while minimizing the impairments of molecular absorption, can be transmitted via the THz channels for a greatly short transmission distance.

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中图分类号:O451

DOI:10.11884/hplpb201628.064128

所属栏目:微纳技术

基金项目:supported by National High Technology Research and Development Program of China

收稿日期:2015-11-23

修改稿日期:2016-01-29

网络出版日期:--

作者单位    点击查看

王玉文:中国工程物理研究院 研究生部, 北京 100088北京应用物理与计算数学研究所, 北京 100094
董志伟:北京应用物理与计算数学研究所, 北京 100094中国工程物理研究院 太赫兹研究中心, 四川 绵阳 621900
李瀚宇:北京应用物理与计算数学研究所, 北京 100094中国工程物理研究院 太赫兹研究中心, 四川 绵阳 621900
周 逊:中国工程物理研究院 太赫兹研究中心, 四川 绵阳 621900中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900

联系人作者:王玉文(wang_yu_wen@sina.com)

备注:Wang Yuwen (1990—), male, PhD candidate, engaged in THz atmospheric propagation

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引用该论文

Wang Yuwen,Dong Zhiwei,Li Hanyu,Zhou Xun. [J]. High Power Laser and Particle Beams, 2016, 28(6): 064128

王玉文,董志伟,李瀚宇,周 逊. 纳米网络中的太赫兹波大气传输和信道分析[J]. 强激光与粒子束, 2016, 28(6): 064128

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