本文首先对各种通信信号进行了理论分析，在此基础上针对数字调制信号采用了基于决策论方法的调制方式识别算法，并利用MATLAB软件进行了计算机仿真。本文的调制识别算法是基于决策论方法，该方法具有运算量小，识别效果好等优点-Firstly, the various communication signals are analyzed theoretically, on the basis adopted for digital modulation method based on decision theory, modulation recognition algorithm, and using MATLAB software, the computer simulation. This modulation recognition algorithm is based on the decision theory method, which has the computational load, and good recognition results