包括调制，解调，信噪比计算，内含心电信号数据及运用MATLAB写的源代码，包括最小二乘法、SVM、神经网络、1_k近邻法。- Includes the modulation, demodulation, signal to noise ratio calculation, ECG data and includes source code written in MATLAB, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.