中文说明：本仿真程序详细详细的包括PPM调制编码对可见光通信调光过程的完美呈现，每一个调制的实现过程都包含在里面，所以是很有价值的源代码
English Description：
The emulator for more details including the PPM modulation and coding for light dimming process perfectly, every modulation process are contained in it, is valuable source code