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arXiv 2401.03357cs.NIeess.SP
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28 GHz下高热效率建筑的室外室内覆盖测量与建模

Measured and Modeled Outdoor Indoor Coverage at 28 GHz into High Thermal Efficiency Buildings

Dmitry Chizhik, Jinfeng Du, Reinaldo Valenzuela, Andrea Bedin, Martti Moisio, Rodolfo Feick

AI总结:

本文研究28 GHz信号穿透高热效率建筑的覆盖问题,发现其因高穿透损耗而严重受限;通过扩展理论路径增益模型并结合280条链路测量,提出仅需建筑粗略描述即可实现高精度预测,显著优于3GPP模型。

摘要:

研究发现,由于法向入射下46 dB的中值穿透损耗以及额外的15 dB中值斜入射损耗,28 GHz信号穿透带有高热效率窗户的现代办公建筑的室外室内覆盖严重受限。本研究基于对280条室外室内链路在100 m范围内的路径增益测量。一个简单的理论路径增益模型被扩展以包含通过建筑多个侧面的穿透以及来自另一建筑的反射。该理论模型考虑了建筑相对于源的方向,相对于数据的RMSE为4.9 dB,而线性拟合的RMSE为5.7 dB,3GPP推荐模型的RMSE为14.7 dB。该模型仅需建筑的粗略描述:建筑方向和外墙组成,无需任何内部细节。从室外基站到高热效率建筑内部终端,SNR>-8 dB的覆盖范围在35 m以内。

英文摘要:

28 GHz outdoor-indoor coverage into modern office buildings with high thermal efficiency windows is found to be severely limited due to 46 dB median penetration loss at normal incidence and additional 15 dB median oblique incidence loss. The study is based on measurements of path gain over 280 outdoor-indoor links, at ranges up to 100 m. A simple theoretical path gain model is extended to include building penetration through multiple sides of the building as well as a reflection from another building. The theoretical model accounts for the building orientation relative to the source, resulting in 4.9 dB RMSE relative to data, as compared to 5.7 dB RMSE from a linear fit and 14.7 dB RMSE for the 3GPP recommended model. Only coarse description of the buildings is required: building orientation and exterior wall composition, without any interior details. Coverage range for SNR>-8 dB from an outdoor base to a terminal just inside a high-efficiency building is under 35 m

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