非视距环境下超宽带信号多重绕射仿真研究

doi:10.16182/j.cnki.joss.2015.06.004

系统仿真学报 ›› 2015, Vol. 27 ›› Issue (6): 1183-1189.doi: 10.16182/j.cnki.joss.2015.06.004

• 仿真建模与仿真算法及数值仿真 • 上一篇下一篇

非视距环境下超宽带信号多重绕射仿真研究

韩涛, 宋建勋, 王红成

东莞理工学院电子工程学院,东莞 523808

收稿日期:2014-09-10 修回日期:2015-01-13 出版日期:2015-06-08 发布日期:2021-01-15
作者简介:韩涛(1981-),男,湖北武汉人,博土。讲师,研究方向为超宽带通信系统,移动通信; 宋建勋(1979-),男,河南永城人,博士,讲师,研究方向为数字信号处理、信息融合技术; 王红成(1981-),男,湖南衡阳人,博士,副教授,研究方向为光通信和非线性光学。
基金资助:
国家自然科学基金(61308019)

Simulation of Multiple Diffraction for UWB Signals under NLOS Environment

Han Tao, Song Jianxun, Wang Hongcheng

College of Electrical Engineering, Dongguan University of Technology, Dongguan 523808, China

Received:2014-09-10 Revised:2015-01-13 Online:2015-06-08 Published:2021-01-15

摘要/Abstract

摘要： 利用时域一致性绕射理论(UTD)和物理光学(PO)的方法来仿真非视距环境下超宽带(UWB)信号多重绕射传播特性。甶于该方法利用一组简单的递推关系来代替一致性绕射理论中复杂的斜率绕射项,从而提供了一种简化的基于时域一致性绕射理论的多重绕射分析方法。利用上述方法推导了著名的Bertonii模型的时域冲激响应,利用卷积运算可以简便地预测仿真环境下接收点的超宽带信号。数值结果表明,这种基于时域UTD-PO的分析方法不仅能够用来准确地分析多重绕射模型而且还能够明显节省运算时间;相比楔形障碍物,圆形障碍物对接收点波形的影响较小。

关键词: 超宽带, 一致性绕射理论, 物理光学, 多重绕射

Abstract: A time domain (TD) solution based on uniform theory of diffraction-physical optics (UTD-PO) was presented to analyze the multiple diffraction propagation characteristics of UWB signals under NLOS environment. The solution provided a simplified method, which utilized a recursion relation and did not need to incorporate the slope diffraction in the transition zone. The channel impulse response of the renowned Bertoni models was derived and the received signals could be predicted through a simple operation of convolution. The numerical results show that the proposed solution based on UTD-PO can find application in the analysis of multiple diffi-action and significantly reduces the computational time. In addition, the attenuation of the received signal caused by the wedge-shaped obstacle is greater than that caused by the cylindrical obstacle

Key words: ultra wideband (UWB), uniform theory of diffraction (UTD), physical optics (PO), multiple diffraction

中图分类号:

TP391.9

韩涛, 宋建勋, 王红成. 非视距环境下超宽带信号多重绕射仿真研究[J]. 系统仿真学报, 2015, 27(6): 1183-1189.

Han Tao, Song Jianxun, Wang Hongcheng. Simulation of Multiple Diffraction for UWB Signals under NLOS Environment[J]. Journal of System Simulation, 2015, 27(6): 1183-1189.

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非视距环境下超宽带信号多重绕射仿真研究

Simulation of Multiple Diffraction for UWB Signals under NLOS Environment

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