Due to the great demand of throughput and reliability for multimedia applications in Fifth Generation (5G) networks, many broadcasting systems adopt the Millimeter Wave (mmWave) technology to address the lack of the spectrum resources. As one of 5G-PPP projects, Internet of Radio Light (IoRL) project adopts 40GHz mmWave band to support a high-speed and stable Ultra-High-Definition (UHD) television broadcasting service in the indoor environment. Because of the high frequency property, mmWave bands usually suffers from the high path loss and the penetration loss. Thus, in order to overcome these issues, directional antennas are employed to provide additional power gain while increasing transmission distance. However, the mmWave with directional antennas brings additional problems, such as limited transmission angle and more multipath effects. Therefore, in this paper, for better understanding of impact factors on the signal quality and transmission coverage of the directional 40GHz mmWave band in the indoor environment, a measurement campaign is introduced in detail and the channel characteristics are measured and analysed in varying cases. The mainly concerned characteristics are path loss, shadow fading, average Power Delay Profile (PDP), Root-Mean-Square (RMS) delay spread, arrival rate and coherence bandwidth. All Measured characteristic values are summarised in three tables at the end of this paper. Besides of these, as a reference of channel analysis and a metric of signal quality and effective coverage, Error Vector Magnitude (EVM) of received signal in each case is measured and discussed. Moreover, a simulation is performed based on a statistical channel model to validate the measured results.

中文翻译：

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用于 5G 新无线电室内广播的毫米波室内频道测量活动

由于第五代（5G）网络中多媒体应用对吞吐量和可靠性的巨大需求，许多广播系统采用毫米波（mmWave）技术来解决频谱资源不足的问题。作为 5G-PPP 项目之一，光无线互联网（IoRL）项目采用 40GHz 毫米波频段，支持室内环境中高速稳定的超高清（UHD）电视广播服务。由于高频特性，毫米波频段通常会遭受高路径损耗和穿透损耗。因此，为了克服这些问题，采用定向天线来提供额外的功率增益，同时增加传输距离。然而，带有定向天线的毫米波带来了额外的问题，例如有限的传输角度和更多的多径效应。因此，为了更好地了解室内环境中定向 40GHz 毫米波频段的信号质量和传输覆盖范围的影响因素，本文详细介绍了一项测量活动，并对不同情况下的信道特性进行了测量和分析。主要关注的特性是路径损耗、阴影衰落、平均功率延迟分布 (PDP)、均方根 (RMS) 延迟扩展、到达率和相干带宽。本文末尾的三个表中总结了所有测量的特征值。除此之外，作为信道分析的参考以及信号质量和有效覆盖的度量，测量和讨论了每种情况下接收信号的误差矢量幅度（EVM）。而且，