在MATLAB simulink中搭建MSK调制解调模型，码元速率可以调整，可以增加信道模型也观察信噪比与误码率之间的关系，scope观察解调结果。-MSK modem built in MATLAB simulink model, the symbol rate can be adjusted to increase the channel model can also observe the relationship between SNR and BER, scope observatio