matlab程序，包括产生正弦调制信号，随机调制信号和周期调制信号，对PPM调制过程进行了仿真-matlab procedures, including sinusoidal modulation signal, random and periodic modulation signal modulated signals for PPM modulation process simulation

2010_Joint LED Dimming and High Capacity Visible Light Communication by Overlapping PPM

to resampling the digital signal. It is also used to add timing error to simulate the communication channel. ppm