pcm编码，对学习通信原理的同学有一定的帮助。希望大家可以好好利用-pcm coding

//// This example will work with the PCB and PCM compilers. The //// //// following conditional compilation lines are used to include a //// //// valid device for each compiler. Change the device and clock //// //// for your hardware if needed.

pcm modulation and qpsk transmission and demodulated back to pcm