设计一完整的移动通信系统物理层传输方案 (WiMAX场景)： 试设计一完整的移动通信系统物理层传输方案并用MATLAB程序实现，要求满足以下指标： 1. 数据速率：5km/hr的移动速度下可实现60Mbps，同时在120km/hr的移动速度下可实现10Mbps，且Eb/No小于20dB时可实现误比特率Pe <= 10-4 2. 信号带宽为20MHz，工作在2GHz频带 3. 信道模型: COST207模型的6径瑞利信道(可参考程序 multipath_code.zip)

We use simulation results to show the performance of the water filling algorithm. Simplify this question into a OFDM based communication network with one transmitter and one receiver. It is assumed that the total power of Pmax = 1 w and the total ban