一般路径损耗模型分为自由空间传播模型和对数距离路径损耗模型，本程序建立以上模型。-Generally divided into free space path loss model propagation model and logarithmic distance path loss model, the program to build more models.

此为HATA路损模型，经常应用于MIMO系统仿真之中，是比较常用且公认的模型-This is HATA path loss model, often applied to MIMO system simulation, the site is relatively common and accepted models