这是一个 16-QAM 传输系统（ 或者说是基带等效传输系统） 包含发射机，信道和接收机的功能。 这个程序当中用到了发送滤波器，接收滤波器，均衡器等模块。作为一个基础的仿真，可以学习为如何通过 MATLAB 来仿真系统。(This is a 16-QAM transmission system (or baseband equivalent transmission system) that includes the transmitter, channel, and receiver functions. This program uses the transmit filter, receive filter, equalizer and other modules. As a basis for simulation, you can learn how to emulate the system through MATLAB.)