说明：  本次课程设计的任务是对增量调制的设计与仿真，并用MATLAB仿真软件进行验证，并以图形化的方式显示出波形，并且要求对设计的内容有必要的说明。
(The task of this course is to design and simulate incremental modulation, and to verify it with MATLAB simulation software, and to display the waveform in a graphical way, and require the necessary description of the content of the design.)