ekf_demo

cdma coding and decoding

ParInfoGain - Computes parallel information gain and gain ratio in Matlab using the Matlab Parallel Computing Toolbox or the Distributed Server (if available) Information gain is defined as: InfoGain(Class,Attribute) = H(Class) - H(Class | Attribute) Gain ratio is defined as: GainRatio(Class, Attribute) = (H(Class) - H(Class | Attribute)) / H(Attribute). ...where H is the entropy, defined as - sum(i=1 to k) pi log2 pi

说明：  为Matlab的日历显示加上农历信息。 (There is a command named "calendar" in MATLAB for get calendar infomation. This code improve the calendar information with the lunar.)

KMEANSK Performs K-means clustering given a list of feature vectors and k The argument k indicates the number of clusters you want the data to be divided into. data_vecs (N*R) is the set of R dimensional feature vectors for N data points. Each row in data_vecs gives the R dimensional vector for a single data point. Each column in data_vecs refers to values for a particular feature vector for all the N data points. The output data_idxs is a N*1 vector of integers telling which cluster number a particular data point belongs to. It also outputs centroids which is a k*R matrix, where each rows gives the vector for the cluster center. If we want to segment a color image i into 5 clusters using spacial and color information, we can use this function as follows:

多输入多输出系统不同收发天线对系统性能的影响(Multiple-input multiple-output system transceiver antenna different impact on system performance)

BCJR decoder，inputs are source bit,coded bit, and a priori, outputs are source bit and coded bit (a posteriori)(There s an array named table inside, describe the trellis, five column is: start state, destination state, source bit,coded bit 1,coded bit 2, respectively.)

一个harris角点检测的MATLAB元代码(a harris corner detection of MATLAB code yuan)

电气化铁路接触网过分相过电压的matlab仿真研究，对于掌握并治理过电压具有积极的作用(Simulation study of MATLAB electrified railway contact net over phase overvoltage, plays a positive role in control and governance over voltage )

MATLAB temperature fieldMATLAB temperature field

一个MATLAB程序，简单的将一个模板水印加到图片上 可以实现放大缩小模板，可以任意位置添加(A MATLAB program, simply add a watermark template can zoom the image template, you can add anywhere)