紫外全向扩频通信的基础理论与实验研究

项目名称： 紫外全向扩频通信的基础理论与实验研究

项目编号： No.61471052

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 韩大海

作者单位： 北京邮电大学

项目金额： 83万元

中文摘要： 紫外通信具有散射传播进而非视距的特点，但限于大气强衰落其非视距特点往往难以实现，而全方向的紫外通信更是紫外技术应用和组网的基础。本项目研究如何在紫外系统中使用多输入多输出（MIMO）和扩展频谱等技术，因此针对紫外扩频信号及其扩频特性的多径效应机理研究和抗多径衰落方法研究具有重要意义。 本项目以全向的紫外通信为目标，以相关物理机理的建模分析和实验测试为依据，以MIMO、扩频等为主要手段，展开紫外全向扩频通信的理论与实验研究。利用课题组在调制、编码及多接收方面积累的成果深入探索MIMO架构及扩频机制对紫外传输的作用机理。 本项目拟给出复杂环境下紫外全向通信的动态随参多散射信道理论模型，提出面向较高速率、全方向的紫外多输入多输出通信方案，完成针对紫外扩频通信的全数字方式的精准相位同步算法及紫外解扩和紫外多接收相结合的信号处理算法创新。目标建立准确的多散射紫外传输模型和基于MIMO的扩频通信系统。

中文关键词： 紫外光通信；MIMO；无线光通信；扩频通信；蒙特卡洛

英文摘要： Ultraviolet (UV) communication, with characteristics of scattering propagation and non-line-of-sight (NLOS), however, is often difficult to technically achieve due to strong atmospheric decline. This project elevates Multiple-Input Multiple-Output (MIMO) and spread spectrum communication the key field in bringing out optimization method of UV system. Therefore the study of the multipath effect mechanism and the anti-multipath fading methods based on spread spectrum UV signal and its characteristics will be of great significance. Aimed at omnidirectional UV communication, this project is based on model analysis and experimental test of related physical mechanism. With the main techniques such as MIMO, spread spectrum, etc., theoretical and experimental study of UV omnidirectional spread spectrum communication will be conducted. The function of MIMO architecture and spreading spectrum mechanism in UV transmission will be in-depth exploited under the help of accumulated group research results in modulation, coding and multi-receiver. This project intends to construct transmission theory and model of Monte Carlo UV omnidirectional communication under complex situation, to bring up MIMO scheme into omnidirectional system with high speed, to accurately propose all-digital phase synchronization algorithm for UV spread spectrum communication, to bring up and realize MIMO technique based on high-sensitivity array detection, and to proposed a signal processing algorithm which combines spectrum despreading with MIMO. The goal of the project is to establish an accurate UV multi-scattering transmission model and build up a MIMO test system so as to achieve UV spread spectrum communication in low BER.

英文关键词： Ultra Violet Communication;Multi-input Multi-output;Wireless Optical Communication;Spread Spectrum;Monte Carlo