We present AMPLE -- a novel multiple path loss exponent (PLE) radio propagation model that can adapt to different environmental factors. The proposed model aims at accurately predicting path loss with low computational complexity considering environmental factors. In the proposed model, the scenario under consideration is classified into regions from a raster map, and each type of region is assigned with a PLE. The path loss is then computed based on a direct path between the transmitter (Tx) and receiver (Rx), which records the intersected regions and the weighted region path loss. To regress the model, the parameters, including PLEs, are extracted via measurement and the region map. We also verify the model in a suburban area. To the best of our knowledge, this is the first time that a multi-slope model precisely maps PLEs and region types. Besides, this model can be integrated into map systems by creating a new path loss attribute for digital maps.

翻译：我们提出AMPLE——一种可适应不同环境因子的新型多路径损耗指数（PLE）无线电传播模型。所提出的模型旨在以低计算复杂度精准预测考虑环境因子的路径损耗。在该模型中，待研究场景依据栅格地图划分为不同区域，每类区域被赋予一个PLE值。随后基于发射机（Tx）与接收机（Rx）之间的直射路径计算路径损耗，该路径记录所穿过的区域及加权区域路径损耗。为回归模型，通过实测结果与区域地图提取包括PLE在内的参数。我们还在郊区场景验证了该模型。据我们所知，这是首次采用多斜率模型实现PLE与区域类型的精确映射。此外，该模型可通过为数字地图创建新的路径损耗属性，集成至地图系统中。