太赫兹轨道角动量通信中信道串扰和功率损耗机理研究

项目名称： 太赫兹轨道角动量通信中信道串扰和功率损耗机理研究

项目编号： No.61501367

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 王虎

作者单位： 西安空间无线电技术研究所

项目金额： 23万元

中文摘要： 太赫兹通信技术是未来高速无线通信领域极具应用前景的新技术，如何进一步提高太赫兹通信系统的容量是目前研究的热点。近年来，轨道角动量（OAM）通信方法在光学和微波频段都获得了大量研究，极大地提升了这些频段的通信系统容量。太赫兹位于光学和微波频段之间，如采用OAM通信方法，太赫兹通信系统的容量必定也能获得大幅度提升。但是太赫兹通信技术和OAM通信方法相结合的研究还非常少，太赫兹OAM通信系统的实现亟需一定的理论和实验研究。为此，本项目将根据太赫兹波的特点，对太赫兹频段OAM光束产生、传播和分离过程进行三维理论建模和仿真计算，分析OAM光束产生和分离组件参数、光束失准和信道带宽等对太赫兹OAM通信中信道串扰和功率损耗等关键参数的影响，探索该方法的局限性和优化系统设计参数，并针对性地开展初步的实验工作。本项目的研究可为远距离大容量太赫兹OAM通信系统的实现奠定系统的理论基础和一定的实验基础。

中文关键词： 轨道角动量无线通信；太赫兹；THz；太赫兹涡旋光束方法；太赫兹无线通信

英文摘要： Terahertz communication is one of the most promising technologies in the field of future high speed wireless communication. How to further improve the system capacity is a hotspot but also the difficulty. Recently, the orbital angular momentum (OAM) communication method has obtained many researches in both microwave and optical communications, which shows the matchless ability in improving the capacity of the communication systems. Since Terahertz is between the two wavebands, if the OAM communication method is adopted, the terahertz communication system will undoubtedly gain the same capacity improvement. However, there are few combined studies between the OAM communication method and terahertz communication, the terahertz OAM communication applications are badly in need of some theoretical and experimental studies. For these reason, this project will focus on the mechanisms of the method in consideration of the characteristics of the terahertz waves. A 3D model will be built to simulate the terahertz OAM beam generation, multiplexing, transmission and de-multiplexing processes, which could reveal how the important parameters of channel crosstalk and power loss are influenced by the parameters of the OAM beam generation and de-multiplexing components, beam misalignments and the channel bandwidth. These would help find the system limitations and optimize the system parameters design. Besides, some special experiments will be carried out to validate the theoretical results. This project will lay the foundations for the long distance and high speed terahertz OAM communication technology.

英文关键词： Orbital angular momentum wireless communication;Terahertz;THz;Terahertz vortical beam method;Terahertz wireless communication