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Comparisons of a computer-based propagation prediction tool with experimental data collected in urban microcellular environments

机译:基于计算机的传播预测工具与城市微蜂窝环境中收集的实验数据的比较

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Engineers designing and installing outdoor and indoor wireless communications systems need effective and practical tools to help them determine base station antenna locations for adequate signal coverage. Computer-based radio propagation prediction tools are now often used in designing these systems. We assess the performance of such a propagation tool based on ray-tracing and advanced computational methods. We have compared its predictions with outdoor experimental data collected in Manhattan and Boston (at 900 MHz and 2 GHz). The comparisons show that the computer-based propagation tool can predict signal strengths in these environments with very good accuracy. The prediction errors are within 6 dB in both mean and standard deviation. This shows that simulations, rather than costly field measurements, can lead to accurate determination of the coverage area for a given system design.
机译:设计和安装室外和室内无线通信系统的工程师需要有效且实用的工具,以帮助他们确定基站天线的位置,以实现足够的信号覆盖范围。现在,在设计这些系统时经常使用基于计算机的无线电传播预测工具。我们基于光线跟踪和高级计算方法评估了这种传播工具的性能。我们将其预测与在曼哈顿和波士顿(900 MHz和2 GHz)收集的户外实验数据进行了比较。比较表明,基于计算机的传播工具可以非常准确地预测这些环境中的信号强度。平均和标准偏差的预测误差均在6 dB以内。这表明模拟,而不是昂贵的现场测量,可以导致给定系统设计的覆盖区域的准确确定。

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