说明：  　　　要求基于MATLAB的模拟调制与解调仿真，主要设计思想是利用MATLAB、simulink檔、M檔等，方便快捷的实现模拟通信的多种调制解调设计。基于simulink对数字通信系统的调制和解调建模。并编写相应的m檔，得出调试及仿真结果并进行分析。
(Requirements are based on analog modulation and demodulation simulation of MATLAB, the main idea is the use of MATLAB, simulink file, M files, etc., to achieve a variety of convenient design of analog modem communications. Simulink digital communication system based on the modulation and demodulation modeling. And the preparation of the corresponding m file debugging and simulation results obtained and analyzed.)