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.

中文翻译：

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室内办公楼的毫米波和亚太赫兹空间统计信道模型


由于数十 GHz 的巨大可用带宽，毫米波 (mmWave) 和亚太赫兹 (THz) 频率预计将在 6G 无线系统及其他系统中发挥至关重要的作用。本文基于 2014 年至 2020 年在室内办公环境中进行的 28 和 140 GHz 广泛无线电传播测量，提出了毫米波和亚太赫兹频率的室内 3D 空间统计信道模型。全向和定向路径损耗模型和信道统计例如时间集群的数量、集群延迟和集群功率是从超过 15,000 个测量的功率延迟曲线中得出的。由此产生的信道统计数据显示，对于 28 和 140 GHz 的 LOS 和 NLOS 环境，时间簇的数量遵循泊松分布，每个簇内的子路径数量遵循复合指数分布。本文遵循先前室外 NYUSIM 信道模型的数学框架，提出了毫米波和亚太赫兹频率的统一室内统计信道模型。开发了相应的室内信道模拟器，它可以为高达 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新创建 3D 全向、定向和多输入多输出 (MIMO) 信道。所提出的统计信道模型和模拟器将指导 6G 及更高版本的未来空中接口、波束成形和收发器设计。