说明：  代码里有很完整的注释和解释，基于人工神经网络的常用数字信号调制，自己编的5种调制信号，Relief计算分类权重，与理论分析结果相比，仿真效果非常好，在matlab R2009b调试通过，预报误差法参数辨识-松弛的思想。
( Code, there are very complete notes and explanations The commonly used digital signal modulation based on artificial neural network, Own five modulation signal, Relief computing classification weight, Compared with the results of theoretical analysis, Simulation of the effect is very good, In matlab R2009b debugging through, Prediction Error Method for Parameter Identification- the idea of relaxation.)