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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Comparison of heterogeneous network rain fade simulation tools: global integrated network SIMulator and MultiEXCELL
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Comparison of heterogeneous network rain fade simulation tools: global integrated network SIMulator and MultiEXCELL

机译：异构网络雨衰模拟工具的比较：全局集成网络模拟器和MultiEXCELL

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摘要

Two heterogeneous network simulation tools are compared and tested against measured data from terrestrial and Earth-space microwave links. Both global integrated network SIMulator (GINSIM) and MultiEXCELL are able to produce joint distributions of rain fade time-series for arbitrary networks of microwave telecommunications links. The tools are fundamentally different in that GINSIM has, as its input, time-series of composite rain rate maps produced by networks of meteorological radars and can produce time-series of joint rain fade. MultiEXCELL uses the rain rate distribution as an input to constrain distributions of parameters of simulated rain cells. This study tests the simulators by comparing a range of annual fade statistics produced by simulation with data measured on experimental links. Link fade data were measured on two, Ka band, Earth-space links and a convergent 38 GHz terrestrial link near Chilbolton in southern England; and a further Earth-space link located in Dundee, Scotland. Both GINSIM and MultiEXCELL are shown to be able to predict joint fade distributions and diversity gain, for the satellite and terrestrial links, to useful accuracy. Differences in performance are analysed, leading to suggested development routes for both systems.
机译：对两种异构网络仿真工具进行了比较，并与来自地面和地球空间微波链路的测量数据进行了比较。全球集成网络模拟器（GINSIM）和MultiEXCELL都能够为微波电信链路的任意网络生成降雨衰落时间序列的联合分布。这些工具的根本不同之处在于，GINSIM具有由气象雷达网络生成的复合降雨率图的时间序列作为输入，并且可以产生联合降雨衰落的时间序列。 MultiEXCELL使用降雨率分布作为输入来约束模拟降雨单元的参数分布。这项研究通过将模拟产生的一系列年度衰落统计数据与实验环节上测得的数据进行比较，对模拟器进行测试。链路衰落数据是在英格兰南部奇尔伯顿附近的两条Ka波段地空链路和一条收敛的38 GHz地面链路上测量的；以及位于苏格兰邓迪的另一条地空链接。事实证明，GINSIM和MultiEXCELL都能够预测卫星和地面链路的联合衰落分布和分集增益，从而达到有用的精度。分析了性能上的差异，从而得出了两个系统的建议开发路线。

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