MATLAB7_0Basic-tutorial

说明：  主要讨论了QPSK的调制解调原理，分析了它们的调制解调实现过程(Mainly discussed the QPSK modulation and demodulation principle, an analysis of their realization of the process of modulation and demodulation)

解决orthomin的问题~由我的老师编写~~~~~~·(code for the orthomin)

用于光纤信道中的色散补偿、适用于PAM调制的直调直检信号(IM/DD,CD compensation,pulse amplitude modulation)

用于数据建模时的样本集自动划分方法，包括RS、KS、SPXY，方法简单实用(Method of automatic sample set time for data modeling, including RS, KS, SPXY, simple and practical method)

二相编码信号的产生以及频谱分析，可以产生7位、11位、13位典型编码信号以及13位bark码的频谱图，通过仿真可用(Two-phase coded signal generation and spectrum analysis, can produce 7, 11 and 13 typically coded signals and 13 yards of bark frequency spectrum, through the simulation can be used)

this code is used to plot the output response of the band pass filter

谱减法去噪程序。我用过了，很好用，希望对大家有所帮助。(Spectral subtraction based denoising procedure. I have used, very good, we hope to help.)

说明：  EM 算法是Dempster，Laind，Rubin于1977年提出的求参数极大似然估计的一种方法，它可以从非完整数据集中对参数进行 MLE估计，是一种非常简单实用的学习算法。这种方法可以广泛地应用于处理缺损数据、截尾数据以及带有噪声等所谓的不完全数据，可以具体来说，我们可以利用EM算法来填充样本中的缺失数据、发现隐藏变量的值、估计HMM中的参数、估计有限混合分布中的参数以及可以进行无监督聚类等等。(EM algorithm is a method for maximum likelihood estimation of parameters proposed by Dempster, Laind and Rubin in 1977. It can estimate parameters from incomplete data sets by MLE. It is a very simple and practical learning algorithm. This method can be widely used in dealing with the so-called incomplete data such as defective data, censored data and noisy data. Specifically, we can use EM algorithm to fill missing data in samples, find hidden variable values, estimate parameters in HMM, estimate parameters in finite mixed distribution, and so on. Unsupervised clustering and so on.)

Orthogonal Matching Pursuit algorithm

说明：  good code in matlab pro