Millimeter Wave and Sub-THz Indoor Radio Propagation Channel Measurements, Models, and Comparisons in an Office Environment
Millimeter Wave and Sub-THz Indoor Radio Propagation Channel Measurements, Models, and Comparisons in an Office Environment
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DOI：
10.1109/lcomm.2021.3088264
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发表时间：
2021-02
期刊：
影响因子：
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通讯作者：
Yunchou Xing;T. Rappaport;Amitava Ghosh
中科院分区：
文献类型：
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作者：
Yunchou Xing;T. Rappaport;Amitava Ghosh
这封信提供了28，73和140 GHz的室内无线电传播测量和相应的信道统计数据的比较，基于2014-2020年室内办公室环境中的广泛测量。传播特性的并排比较（例如，大规模路径损耗和多径时间分散）说明了室内无线信道中的关键相似性和差异。测量和模型显示出非常相似的路径损耗指数在频率上的视线（LOS）和非LOS（NLOS）的情况下，当使用一米的自由空间参考距离，而多径时间分散在更高的频率变得更小。3GPP室内信道模型高估了大规模路径损耗，并且与本信中测量的信道统计相比，具有不切实际的大量簇和每个簇的多径分量。
This letter provides a comparison of indoor radio propagation measurements and corresponding channel statistics at 28, 73, and 140 GHz, based on extensive measurements from 2014–2020 in an indoor office environment. Side-by-side comparisons of propagation characteristics (e.g., large-scale path loss and multipath time dispersion) across a wide range of frequencies from the low millimeter wave band of 28 GHz to the sub-THz band of 140 GHz illustrate the key similarities and differences in indoor wireless channels. The measurements and models show remarkably similar path loss exponents over frequencies in both line-of-sight (LOS) and non-LOS (NLOS) scenarios, when using a one meter free space reference distance, while the multipath time dispersion becomes smaller at higher frequencies. The 3GPP indoor channel model overestimates the large-scale path loss and has unrealistic large numbers of clusters and multipath components per cluster compared to the measured channel statistics in this letter.