中文说明：
在发射端，noma 采用叠加编码(sc)同时向多个接收端发送独立的数据包(信号) ，另一方面，noma 采用逐次干扰抵消(sic)分离不同用户的信号。
English Description：
At the transmitter side, NOMA employs Superposition-Coding (SC) to send independent packets (signals) to several receivers simultaneously, and on the other hand, Successive-Interference-Cancellation (SIC) is employed to separate the signals of different users.