MIMO信道的建模函数， 可实现四种功能：产生瑞利衰落信道，产生具有特定功率的高斯噪声，产生01信息比特流和在给定原输入信号下的误码率。-MIMO channel modeling function for the four functions: generate Rayleigh fading channels, generate Gaussian noise with a specific power to generate 01 bits of information flow and given under the original input signal error rate.