一种通用室内链路损耗经验模型的修正

A general empirical indoor path-loss model

为了分析2.405 GHz^2.480 GHz室内场景的路径损耗与衰落,通过测试验证得到了一种室内链路损耗模型。该模型能较准确地描述在不同场景下路径损耗与距离之间的关系。与经典模型相比较,该模型数据通过CC2530物联网开发平台采集得到,利用二径模型进行了修正,能更好地表现室内电波传播特性,具有更高的精度和通用性。此外,在环境变化的情况下,该模型的简化形式能有效用于室内传播链路损耗的相关应用与研究。

An indoor path-loss formula is introduced to analyze the path-loss and fading in indoor scenarios between 2.405 GHz and 2.480 GHz. The formula can well reproduce the path-loss versus distance trend in different scenarios. Its data is derived from a simple system emulators of CC2530 eompared with other models. It modifies the classical log-log formula with a two-ray model. The new formula gives a better performance in both accuracy and generality. Moreover, its compact formulation simplifies its use for theoretical studies and applications on indoor radio communication, while the environment varies.