无线视频传输系统中UWB信号绕射特性研究  

Study on diffraction propagation characteristic of UWB signal in wireless video transmission system

作　　者：韩涛[1] 张明军 王红成[1] 李秀平[1] 

机构地区：[1]东莞理工学院电子工程学院,广东东莞523808 [2]法国国立工艺学院电子自动化与系统学院,法国巴黎75003

出　　处：《现代电子技术》2016年第17期12-15,共4页Modern Electronics Technique

基　　金：国家自然科学基金(61308019);广东省自然科学基金(S2013010013261)

摘　　要：在超宽带无线视频传输系统中,经常会遇到非视距传播环境,需要研究在该环境下超宽带信号绕射传播特性。利用时域一致性绕射理论(UTD)和物理光学(PO)分析绕射传播特性的优势,提出一种混合方法来分析超宽带信号在无线视频传输系统中的绕射传播特性。该混合方法利用一组简单的递推关系代替一致性绕射理论中的高阶绕射项。这种基于时域UTD-PO的混合分析方法不仅能够用来准确地分析无线视频传输环境下超宽带信号的多重绕射传播特性而且还能够明显提高运算效率。Since the environment of non-line-of-sight（NLOS） propagation is often encountered in ultra-wideband（UWB）wireless video transmission system,the diffraction propagation characteristic of UWB signal should be studied in this environment. The advantage of diffraction propagation characteristic is analyzed with the time domain uniformity theory of diffraction（UTD）and physical optics（PO）,and a hybrid method is presented to analyze the diffraction propagation characteristic of UWB signal in wireless video transmission system. The hybrid method utilizes a group simple recursion relation instead of the higher-order diffraction item in the consistency diffraction theory. This hybrid analysis method based on time-domain UTD-PO can analyze the multi-diffraction propagation characteristic of UWB signal in wireless video transmission environment accurately,and improve the computational efficiency obviously.

关 键 词：超宽带 多重绕射 无线视频 传播特性 

分 类 号：TN82[电子电信—信息与通信工程]