In this work, line-of-sight multiple-input multiple-output (MIMO) measurements in the frequency range from 1 GHz to 40 GHz are presented for an indoor environment in the scope of new 5G bands. For the sake of comparison, the measured radio channels are reproduced with great accuracy using ray-tracing techniques by tuning all propagation mechanisms. The relative received power, root mean square of the delay spread (RMS DS) and K-factor provide an insight of how propagation behaves in indoor scenarios within a large and contiguous frequency band. Results show that a decay factor behaves nearly constant with frequency and the RMS DS is quite sensible to frequency. From these results, faithful one-slope 5G models are proposed. Finally, the contribution of the simulated propagation mechanisms to the radio channel is investigated which suggests that the simulation of the low-mmW radio channel can be simplified.

中文翻译：

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室内环境中1-40 GHz的LoS理论和实验MIMO研究

在这项工作中，提出了在新5G频段范围内的室内环境下，在1 GHz至40 GHz频率范围内的视线多输入多输出（MIMO）测量。为了进行比较，通过调整所有传播机制，使用射线跟踪技术以很高的精度重现了所测量的无线电信道。相对接收功率，延迟扩展的均方根（RMS DS）和K因子提供了一个洞察力，可了解在大且连续的频带内室内场景中传播的行为。结果表明，衰减因子随频率变化几乎恒定，RMS DS对频率非常敏感。根据这些结果，提出了忠实的单斜率5G模型。最后，