说明：  OSIC（排序的连续干扰消除）信号检测仿真程序，实现不同的OSIC信号检测方法：基于SINR排序、基于列范数排序、基于检测后的SNR排序
(OSIC (ordered successive interference cancellation) signal detection simulation program OSIC achieve different signal detection method: SINR based sorting, sorting based on the norm of the columns, after the detection ordering based SNR)