signal-process-with-matlab

spread spectrum and despread

This program calculate the conductivity of cylindrical metal nanowire using the phonon approximation in a core-shell structure, in this code, the diameter, and the metal can be changed to simulated other metals. the calculated dispersion relation of the resistivity of a single band is saved as data file. to use the program, run g_E2.m(This program calculate the conductivity of cylindrical metal nanowire using the phonon approximation in a core-shell structure, in this code, the diameter, and the metal can be changed to simulated other metals. The calculated dispersion relation of the resistivity of a single band is saved as data file. to use the program, run g_E2.m)

SNRZ，双向码，密勒码三种码型的功率谱分布图(SNRZ, two-way code, Miller code three kinds of code-type power spectrum distribution)

This file is the programs of (chapter 9) of book (Modeling the Wireless Propagation Channel a Simulation Approach with MATLAB) which is related The Land Mobile Satellite Channel. It helps you to simulate The Land Mobile Satellite Channe.

数值计算基本算法 包括 拉格朗日插值，牛顿迭代 辛普森公式 高斯-雅可比迭代 厄米特插值多项式 最小平方逼近等(Basic algorithm for numerical calculation)

matlab code from state university of new york in united states

语音方面的工具箱，里面包含了很多语音的基础函数如分帧函数等等(Voice in the toolbox, which contains a lot of voice-based functions such as sub-frame function, etc., etc.)

Modified Gram-Schmidt (MGS)正交化法是利用已有正交基计算新的正交基。既能选择相关特征，又能排出已选特征对后续特征选择的影响。(Modified Gram-Schmidt (MGS)orthogonalization gives new orthogonal basis through original orthogonal basis. It can do the feature selection and eliminate the impact on choosing new feature vector by the selected one.)

Common spatial pattern 公共空间模式滤波是处理脑电信号的一种方法，它可以使两类想象运动EEG的协方差之间的差距最大化，便于后期的分类处理。(Common spatial pattern model of public space filtering is a method of EEG signal processing, it can make two types of movement EEG covariance imagine the gap between the maximum, to facilitate the later classification.)

说明：  完成KNN聚类，是一种比较基础的聚类算法，根据与邻居之间的距离判断(finish knn cluster,it is a basic function,you can use it to complish a cluster)