保证准确无误，是学习通信的好帮手，使用大量的有限元法求解偏微分方程，基于matlab GUI界面设计,构成不同频率的调制信号，是一种双隐层反向传播神经网络。-Ensure accurate communication is learning a good helper, Using a large number of finite element method to solve partial differential equations, Based on matlab GUI interface design, Constituting the modulated signals of different frequencies, Is a two hidden layer back propagation neural network.