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Grey System Theory application in model selection of channel modeling at 1.4 GHz

机译:灰色系统理论在1.4 GHz信道建模模型选择中的应用

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摘要

In order to find the most appropriate one from various propagation path loss models, model selection is a crucial step in channel modeling. By treating it as a “data matching problem”, a method combined Grey Relational Grade (GRG) and Mean Absolute Percentage Error (MAPE) is proposed after analyzing a number of widely used path loss models. At the next stage, measurement data that derived from urban and suburban environments at 1.4 GHz are implemented for simulation and results comparison. The outcomes demonstrate that Okumura-Hata models are relatively better than others within these two environments. Due to the result obtained at the end of this paper, the GRG-MAPE method based on Grey System Theory can be determined as an effective methodology.
机译:为了从各种传播路径损耗模型中找到最合适的模型,模型选择是信道建模中的关键步骤。通过将其视为“数据匹配问题”,在分析了许多广泛使用的路径损耗模型后,提出了一种将灰色关联度(GRG)和平均绝对百分比误差(MAPE)相结合的方法。在下一阶段,将从1.4 GHz的城市和郊区环境获得的测量数据用于仿真和结果比较。结果表明,在这两种环境下,Okumura-Hata模型相对优于其他模型。由于本文最后的结果,可以将基于灰色系统理论的GRG-MAPE方法确定为一种有效的方法。

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