说明：  运用Simulink搭建的有线电视HFC网络上行信道仿真模型，运用16QAM调制，RS编解码，能够获得系统误码率曲线与信噪比之间的关系
(The use of Simulink to build the cable HFC network upstream channel simulation model, the use of 16QAM modulation, RS coding and decoding, have access to the system bit error rate curve and the relationship between SNR)