1.由用户输入发射天线和接收天线的数量和SNR的值，画出MIMO通道性能的PDF和CDF,通道符合雷利分布。2.输入发射天线和接收天线数量及SNR范围，计算通道的性能，画出所有capacity v.s SNR图。- ​ ​ 1. transmit and receive antennas are input by the user of the number and SNR draw MIMO channel performance of PDF and CDF, in li