中文说明：这个程序是在非正交多址系统下的仿真，采用PDSCH信道，这里采用连个用户，就没有对多个用户进行分组，对于两个用户，我们对它们分0.8和0.2的功率比。然后再接收端才用串行干扰消除技术（SIC）对它们进行干扰消除，解出这两个用户。
English Description：
This program is under the non-orthogonal CDMA system simulation using PDSCH channel, even a user, there is no group for multiple users, for two users, we have the power ratio of 0.8 and 0.2. Then the receiver with a serial interference cancellation (SIC) to interfere with them, and to work out the two users.