说明：  研究数字频带传输系统基本原理，在 LabVIEW 软件平台上实现 2ASK、2FSK 的设计仿真。采用模块化设计思想，以信号产生模块为设计起点，根据信号的数据流动方向依次将整个设计划分为调制模块、加噪模块、解调模块。
(The basic principle of digital bandwidth transmission system is studied. The design and Simulation of 2ASK and 2FSK are implemented on LabVIEW software platform. Based on the idea of modular design, the whole design is divided into modulation module, noise adding module and demodulation module according to the direction of data flow.)