Millimeter Wave and Sub-Terahertz Spatial Statistical Channel Model for an Indoor Office Building
Millimeter Wave and Sub-Terahertz Spatial Statistical Channel Model for an Indoor Office Building
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DOI：
10.1109/jsac.2021.3071844
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发表时间：
2021-06-01
影响因子：
16.4
通讯作者：
Rappaport, Theodore S.
中科院分区：
文献类型：
--
作者：
Ju, Shihao;Xing, Yunchou;Rappaport, Theodore S.
毫米波（mmWave）和亚太赫兹（THz）频率预计将在6 G无线系统及以后发挥至关重要的作用，因为它们具有数十GHz的巨大可用带宽。本文基于2014年至2020年在室内办公室环境中进行的28和140 GHz的广泛无线电传播测量，提出了一种针对毫米波和亚太赫兹频率的室内三维空间统计信道模型。全向和定向路径损耗模型和信道统计数据，如时间簇的数量，集群延迟，集群功率来自超过15,000测量功率延迟配置文件。由此产生的信道统计数据表明，时间集群的数量遵循泊松分布，每个集群内的子路径的数量遵循复合指数分布的LOS和NLOS环境在28和140 GHz。本文提出了一个统一的室内统计信道模型的毫米波和亚太赫兹频率以下的数学框架，以前的室外NYUSIM信道模型。开发了相应的室内信道模拟器，该模拟器可以针对高达150 GHz的任意毫米波和亚太赫兹载波频率、信号带宽和天线波束宽度重建3D全向、定向和多输入多输出（MIMO）信道。本文提出的统计信道模型和仿真器将指导未来6 G及以后的空中接口、波束成形和收发器设计。
Millimeter-wave (mmWave) and sub-Terahertz (THz) frequencies are expected to play a vital role in 6G wireless systems and beyond due to the vast available bandwidth of many tens of GHz. This paper presents an indoor 3-D spatial statistical channel model for mmWave and sub-THz frequencies based on extensive radio propagation measurements at 28 and 140 GHz conducted in an indoor office environment from 2014 to 2020. Omnidirectional and directional path loss models and channel statistics such as the number of time clusters, cluster delays, and cluster powers were derived from over 15,000 measured power delay profiles. The resulting channel statistics show that the number of time clusters follows a Poisson distribution and the number of subpaths within each cluster follows a composite exponential distribution for both LOS and NLOS environments at 28 and 140 GHz. This paper proposes a unified indoor statistical channel model for mmWave and sub-Terahertz frequencies following the mathematical framework of the previous outdoor NYUSIM channel models. A corresponding indoor channel simulator is developed, which can recreate 3-D omnidirectional, directional, and multiple input multiple output (MIMO) channels for arbitrary mmWave and sub-THz carrier frequency up to 150 GHz, signal bandwidth, and antenna beamwidth. The presented statistical channel model and simulator will guide future air-interface, beamforming, and transceiver designs for 6G and beyond.