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NB-IoT devices in reverberation chambers: a comprehensive uncertainty analysis

机译:混响室中的NB-IOT设备:全面的不确定性分析

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摘要

New protocols related to Internet-of-things applications may introduce previously unnoticed measurement effects in reverberation chambers (RCs) due to the narrowband nature of these protocols. Such technologies also require less loading to meet the coherence-bandwidth conditions, which may lead to higher variations, hence uncertainties, across the channel. In this work, we extend a previous study of uncertainty in NB-IoT and CAT-M1 device measurements in RCs by providing, for the first time, a comprehensive uncertainty analysis of the components related to the reference and DUT measurements. By use of a significance test, we show that certain components of uncertainty become more dominant for such narrowband protocols, and cannot be considered as negligible, as in current standardized test methods. We show that the uncertainty, if not accounted for by using the extended formulation, will be greatly overestimated and could lead to non-compliance to standards.
机译:由于这些协议的窄带性质,与用于互联网互联网应用相关的新协议可以在混响室(RCS)中引入先前没有注意的测量效果。 这些技术还需要较少的装载以满足相干带宽条件,这可能导致越来越多的变化,因此在渠道上。 在这项工作中,我们通过第一次提供了对RCS中的NB-IOT和CAT-M1设备测量中的不确定性的先前研究,通过提供与参考和DUT测量有关的组件的全面的不确定性分析。 通过使用重要性测试,我们表明某些不确定性的组件对于这种窄带协议变得更加主导,并且不能被视为可忽略不计,如当前的标准化测试方法。 我们表明,如果没有使用扩展制定的情况,我们将大大高估,并且可能导致对标准的不合规。

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