室内超宽带信号多径传播特性研究
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- 英文论文题名：Study on the UWB Signal Multipath Propagation Characteristics in Indoor Environment
- 论文作者：李双德 ; 刘芫健 ; 陈志鹏 ; 孙湘琛
- 英文论文作者：LI Shuang-de ; LIU Yuan-jian ; Chen Zhi-peng ; Sun Xiang-chen ; College of Electronic science and Engineering ; Nanjing University of Posts & Telecommunications
- 年：2017
- 作者机构：南京邮电大学电子科学与工程学院;
- 论文关键词：超宽带信号 ; 室内环境 ; 入射及反弹射线/镜像法 ; 传播特性
- 英文论文关键词：UWB signal ; indoor environment ; SBR/IM ; propagation characteristics
- 会议召开时间：2017-05-08
- 会议录名称：2017年全国微波毫米波会议论文集（中册）
- 英文会议录名称：Proceedings of 2017 National Conference on Microwave and Millimeter Waves(NCMMW2017)
- 语种：中文
- 分类号：TN925
- 学会代码：ZDWB
- 会议名称：2017年全国微波毫米波会议
- 会议地点：中国浙江杭州
- 主办单位：中国电子学会
- 学会名称：中国电子学会微波分会
- 页数：4
- 文件大小：1046k
- 原文格式：D
- 会议级别：全国
摘要
文中基于入射及反弹射线/镜像法研究了室内短距离办公环境中超宽带信号多径传播特性。比较分析了仿真中得到的视距传播和非视距传播的电场强度、接收功率分布、功率延时分布等传播参数。仿真结果表明:视距传播中直射路径最先到达接收点,且在全部多径信号中占绝大部分能量;经过二次透射的路径由于损耗较大可以忽略不计,但是二次反射射线携带的能量较大,不能忽略。室内环境和建筑的结构对超宽带信号的多径传播特性影响较大,所以在研究超宽带传播特性时室内传播环境必须考虑。仿真结果可以为室内复杂环境中超宽带无线通信网络覆盖与优化提供理论依据。
In this paper, the multipath propagation characteristics of ultra-wideband(UWB) signal in the indoor short-range environment are studied based on the method of shooting and bouncing ray tracing/image(SBR/IM). Some propagation parameters are analyzed such as electric field intensity, the distribution of received power, power delay profile and so on in terms of line-of-sight(LOS) and non-line-of-sight(NLOS) environment. The results show that: The direction path is the first to arrive the receiver and it is the strongest signal in LOS environment. For the given environment, the two order transmission path is weaker, which can be ignored. But the energy carried by the two order reflection ray is larger, which can't be ignored. The structure of indoor environment and architecture has great influence on the multipath propagation characteristics of UWB. Therefore, the UWB communication systems must consider the effects of environment. These results provide the theoretical basis for wireless communication network coverage and optimization of UWB signal in indoor complex environment.
In this paper, the multipath propagation characteristics of ultra-wideband(UWB) signal in the indoor short-range environment are studied based on the method of shooting and bouncing ray tracing/image(SBR/IM). Some propagation parameters are analyzed such as electric field intensity, the distribution of received power, power delay profile and so on in terms of line-of-sight(LOS) and non-line-of-sight(NLOS) environment. The results show that: The direction path is the first to arrive the receiver and it is the strongest signal in LOS environment. For the given environment, the two order transmission path is weaker, which can be ignored. But the energy carried by the two order reflection ray is larger, which can't be ignored. The structure of indoor environment and architecture has great influence on the multipath propagation characteristics of UWB. Therefore, the UWB communication systems must consider the effects of environment. These results provide the theoretical basis for wireless communication network coverage and optimization of UWB signal in indoor complex environment.
引文
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[2]Molisch A F,Cassioli D,Emami S,et al.A comprehensive standardized model for ultra-wideband propagation channels[J].IEEE Transactions on Antennas and Propagation,2006,54,3151-3166.
[3]Chehri A,Fortier P,Tardif P M.Characterization of the ultra-wideband channel in confined environments with diffracting rough surfaces[J].Wireless Personal Communications,2012,62(4):859-877.
[4]Anderson C R.Volos H I.Buehrer R M.Characterization of low-antenna ultra-wideband propagation in a forest environment[J].IEEE Transactions on Vehicular Technology,2013,62:2878-2895.
[5]Mohammadi Z,Saadane R,Aboutajdine D.On ultra wideband indoor channel modeling based on generalized gamma distribution[J].Wireless Personal Communications,2014,74(2):529-544.
[6]Laner A,Bahr A,Wolff I.FDTD simulations of indoor propagation[C]//Proceedings of the 44th IEEE Vehicular Technology Conference.1994,2:883-886.
[7]Levy M F.Parabolic equation modelling of propagation over irregular terrain[J].IEEE Electronics Letters,1990,(15):1153-1155.
[8]Rizk K,Wagen J,Gardiol F.Two-dimensional ray-tracing modeling for propagation prediction in microcellular environment[J].IEEE Transactions on Vehicular Technology,1997,46(2):508-518.
[9]Athanasiadou G E.A ray tracing algorithm for microcellular wideband propagation modeling[C]//IEEE International Conference on Antennas and Propagation.1995,2:231-235.
[10]Ling H,Chou R C.Shooting-and–Bouncing Rays:calculating the RCS of an arbitrarily shaped cavity[J].IEEE Transactions on Antennas and Propagation,1989,37(2):194-205.
[11]Chen S H.An SBR/Image approach for radio wave propagation in indoor environments with metallic furniture[J].IEEE Transactions on Antennas and Propagation,1997,45(1):98-106.