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首页> 外文期刊>IEEE Transactions on Vehicular Technology >Path loss, scattering and multipath delay statistics in four European cities for digital cellular and microcellular radiotelephone
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Path loss, scattering and multipath delay statistics in four European cities for digital cellular and microcellular radiotelephone

机译：欧洲四个数字蜂窝和微蜂窝无线电话城市的路径损耗，散射和多径延迟统计

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The authors present typical and worst-case root mean square (RMS) delay spreads and excess delay spreads (10 dB) and mean channel path loss at 900 MHz in four European cities using typical cellular and microcellular antenna locations. Several thousand power delay profile measurements were made at six typical cellular and microcellular base station locations in the four cities. The data were obtained at local worst-case time-dispersion locations over hundreds of kilometers of typical operating routes, such as highways, bridges, and city streets, and form the basis for statistical models which can be used to predict the percentage of locations or the percentage of time in which channels will possess particular values of RMS delay spread and excess delay spread. The effect of reference distance on wideband path loss and the propagation path loss laws for cellular and microcellular radio channels are given. Radar cross sections computed from the data for typical scatterers in cellular and microcellular radio channels are given.
机译：作者介绍了在四个使用典型的蜂窝和微蜂窝天线位置的欧洲城市中，典型和最坏情况的均方根（RMS）时延扩展和过量时延扩展（10 dB）以及900 MHz处的平均信道路径损耗。在四个城市的六个典型的蜂窝和微蜂窝基站位置进行了数千次功率延迟曲线测量。这些数据是在数百公里的典型运营路线（如高速公路，桥梁和城市街道）上的本地最坏情况时间分散位置获得的，这些数据可作为统计模型的基础，可用于预测位置或信道拥有RMS延迟扩展和过量延迟扩展的特定值的时间百分比。给出了参考距离对蜂窝和微蜂窝无线电信道的宽带路径损耗以及传播路径损耗定律的影响。给出了从蜂窝和微蜂窝无线电信道中典型散射体的数据计算得出的雷达截面。

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