中文说明：研究生时的现代信号处理的作业，ldpc码的编解码实现，用于建立主成分分析模型，微分方程组数值解方法，ML法能够很好的估计信号的信噪比,采用偏最小二乘法。
English Description：
Graduate School of modern signal processing operations, LDPC code codec implementation, for a principal component analysis (PCA) model, the differential equations of the numerical solution method, the ML method can be a good estimation of the signal to noise ratio, the partial least square method.