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Statistical model of the angular power distribution for wireless multipath environments

机译：无线多径环境的角功率分布统计模型

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摘要

The study presents a two-dimensional model of angular power distribution for land mobile environments that can extend the capabilities of modelling the spatial properties of received signals in simulation studies. The developed model gives statistical description of the power azimuth spectrum (PAS) as the closed-form function. In the literature, the authors can find large collection of small-scale propagation models that characterise the spatial properties of the received signals. However, their practical use in simulation studies is associated with a significant problem that concerns the matching model parameters for transmission properties of the modelled environment. For the presented PAS model, the power delay profile or the power delay spectrum are the source of input data. Therefore unlike the existing models, the developed PAS model is highly dependent on the transmission characteristics of the modelled environment. For sample scenarios, PAS dependencies on the type of environment, the distance between the transmitter and the receiver, and the uplink and downlink transmissions are shown. Results predicted by this model are compared with those for other models as well with experimental results available for typical and bad urban environments. Comparison shows that the developed PAS model produces results that very closely agree with experimental data.
机译：该研究提出了一种用于陆地移动环境的角功率分布的二维模型，该模型可以扩展在仿真研究中对接收信号的空间特性建模的功能。所开发的模型给出了功率方位谱（PAS）作为闭式函数的统计描述。在文献中，作者可以找到大量的小规模传播模型，这些模型表征了接收信号的空间特性。但是，它们在模拟研究中的实际应用与一个重大问题相关，该问题涉及用于建模环境的传输特性的匹配模型参数。对于提出的PAS模型，功率延迟曲线或功率延迟频谱是输入数据的来源。因此，与现有模型不同，已开发的PAS模型高度依赖于建模环境的传输特性。对于示例场景，显示了PAS依赖于环境类型，发射机与接收机之间的距离以及上行链路和下行链路传输。该模型预测的结果与其他模型的预测结果以及典型和恶劣城市环境下可获得的实验结果进行了比较。比较表明，开发的PAS模型产生的结果与实验数据非常吻合。

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