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arXiv 2103.06790eess.SP
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多节点车辆无线信道:测量、大型车辆建模和硬件在环评估

Multi-Node Vehicular Wireless Channels: Measurements, Large Vehicle Modelling, and Hardware-in-the-Loop Evaluation

Stefan Zelenbaba, Benjamin Rainer, Markus Hofer, David Löschenbrand, Laura Bernadó, Anja Dakić, Thomas Zemen

摘要:

了解多节点车辆无线通信信道对于未来公路、铁路和空中的人工驾驶以及部分自动驾驶车辆的时间敏感安全应用至关重要。这些高度动态的无线通信信道的特征在于快速变化的信道统计。在本文中,我们提出了第一个完全移动的多节点车载无线信道探测系统,它能够同时捕获多个信道的频率响应,确保测量条件是相同的所有观察到的链接。我们用它来分析多辆车和一个大型阻碍双层巴士的道路场景。经验测量数据被用来参数化的模型内的基于几何的随机信道模型的大型障碍车辆。我们比较了从我们的信道模型与测量活动中获得的时变信道统计。通过一个信道仿真器,我们获得的分组错误率的商业调制解调器的测量和模拟的无线通信信道,并比较它们,以验证模型在链路级。我们发现,路径损耗,均方根(RMS)延迟扩展,和RMS多普勒扩展偏离小于$3.6\,\mathrm{dB}$,$78\,\mathrm{ns}$,和$52\,\mathrm{Hz}$,分别为$80\%$的总模拟持续时间。从测量数据中获得的PER是在我们的模型的最大和最小范围内的$86\%$的模拟持续时间。

英文摘要:

Understanding multi-node vehicular wireless communication channels is crucial for future time-sensitive safety applications for human-piloted as well as partly autonomous vehicles on roads, railways and in the air. These highly dynamic wireless communication channels are characterized by rapidly changing channel statistics. In this paper we present the first fully mobile multi-node vehicular wireless channel sounding system, which is capable of simultaneously capturing multiple channel frequency responses, ensuring that measurement conditions are identical for all observed links. We use it to analyze road scenarios with multiple vehicles and a large obstructing double-decker bus. The empirical measurement data is used to parametrize a model for the large obstructing vehicle within a geometry-based stochastic channel model. We compare the time-variant channel statistics obtained from our channel model with the ones from the measurement campaign. By means of a channel emulator we obtain the packet error rates of commercial modems for the measured and the simulated wireless communication channels and compare them, in order to validate the model at the link level. We find that the path loss, the root mean square (RMS) delay spread, and the RMS Doppler spread deviate by less than $3.6\,\mathrm{dB}$, $78\,\mathrm{ns}$, and $52\,\mathrm{Hz}$, respectively, for $80\%$ of the total simulation duration. The PER obtained from measured data is within the maximum and minimum bounds of our model for $86\%$ of the simulation duration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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