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首页> 外文期刊>Antennas and Propagation Magazine, IEEE >A Comparison of Empirical and Ray-Tracing Models for Indoor Radio-Wave Propagation [Wireless Corner]
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A Comparison of Empirical and Ray-Tracing Models for Indoor Radio-Wave Propagation [Wireless Corner]

机译：室内无线电波传播的经验和射线跟踪模型的比较[无线角]

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摘要

Both empirical and ray-tracing models are powerful tools for studying propagation in indoor environments. Although the empirical models perform well in many cases, their physical significance is not clearly understood. Ray tracing is based on physics fundamentals, and its application as well as the interpretation of its results is more general. We compare the performance of both models for indoor environments. We found that the path-loss (PL) prediction error of the ray-tracing model is comparable to the error of the linear regression fit of the PL in a site-specific empirical model. Those empirical models provide some advantages when making estimations in the same environment in which they were trained, but their performance degrades in other environments. Ray-tracing models obtain better results when a wider range of application environments is sought. Ray tracing also provides a good insight into the specific propagation phenomena that take place in the wideband radio channel, so the relevant contributions can be identified.
机译：经验和射线跟踪模型都是研究室内环境中传播的强大工具。虽然经验模型在许多情况下表现良好，但它们的物理意义没有清楚地理解。射线跟踪是基于物理基础，及其应用以及其结果的解释更为一般。我们比较适用于室内环境的模型的性能。我们发现光线跟踪模型的路径损耗（PL）预测误差与位点特定的经验模型中PL的线性回归拟合的误差相当。这些经验模型在培训培训的同一环境中进行了一些优势，但它们的性能在其他环境中降低。当寻求更广泛的应用环境时，辐射模型获得了更好的结果。光线跟踪还对宽带无线电通道中发生的特定传播现象提供了良好的洞察力，因此可以识别相关贡献。

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