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首页> 外文期刊>IEEE Transactions on Microwave Theory and Techniques >UWB On-Body Radio Channel Modeling Using Ray Theory and Subband FDTD Method
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UWB On-Body Radio Channel Modeling Using Ray Theory and Subband FDTD Method

机译：基于射线理论和子带FDTD方法的UWB人体无线电信道建模

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摘要

This paper presents the ultra-wideband on-body radio channel modeling using a subband finite-difference time-domain (FDTD) method and a model combining the uniform geometrical theory of diffraction (UTD) and ray tracing (RT). In the subband FDTD model, the frequency band (3-9 GHz) is uniformly divided into 12 subbands in order to take into account the material frequency dispersion. Each subband is simulated separately and then a combination technique is used to recover all simulations at the receiver. In the UTD/RT model, the RT technique is used to find the surface diffracted ray path, while the UTD is applied for calculating the received signal. Respective modeling results from two- and three-dimensional subband FDTD and UTD/RT models indicate that antenna patterns have significant impacts on the on-body radio channel. The effect of different antenna types on on-body radio channels is also investigated through the UTD/RT approach.
机译：本文介绍了使用子带有限差分时域（FDTD）方法以及结合了均匀几何理论的衍射（UTD）和射线追踪（RT）的模型的超宽带人体无线电信道建模。在子带FDTD模型中，为了考虑材料的频率色散，将频带（3-9 GHz）均匀地分为12个子带。每个子带分别进行仿真，然后使用组合技术在接收机处恢复所有仿真。在UTD / RT模型中，RT技术用于查找表面衍射射线路径，而UTD用于计算接收信号。二维和三维子带FDTD和UTD / RT模型的相应建模结果表明，天线方向图对人体无线电信道具有重大影响。还通过UTD / RT方法研究了不同天线类型对人体无线电信道的影响。

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