仿真两径模型中接收功率与距离的关系、两径模型中的路径损耗以及对数正态阴影衰落随距离变化的过程；设计移动通信信道中的瑞利衰落仿真器-Simulation of two-path model received power versus distance, two path model path loss and lognormal shadow fading with distance change process design of mobile communication channels R