chepaishibie

说明：  基于matlab矩阵形式的huffman编码(Matrix based on the huffman coding matlab)

创建动画 播放动画 分别读入图像 用imshow函数显示(Play the animation to create animated images were read into the display with the imshow function)

以计算样本点到聚类中心的距离为例，学到matlab中矩阵在加权指数,迭代次数和误差的相关应用(Sample points to calculate the distance to the cluster center, for example, learn matlab in the matrix in the weighted index, the number of iterations and errors related applications)

此源码主要功能是在图像分析时将8连接边界转换为4连接边界，在图像分割、描述和识别中有较大的用途(The main function of this source is in the image analysis will be 8 to connect the border converted to 4 to connect the border, in the image segmentation, description and identification of a greater use of)

Joannopoulos "Photonic crystals. Molding the flow of light" - one of the best books on photonic crystals(Joannopoulos "Photonic crystals. Molding the flow of light"- one of the best books on photonic crystals)

非归零型差分相位调制信号建模与仿真分析 ，合成孔径雷达（SAR)目标成像仿真，MIMO OFDM matlab仿真。( NRZ type differential phase modulation signal modeling and simulation analysis, Synthetic Aperture Radar (SAR) imaging simulation target, MIMO OFDM matlab simulation.)

说明：  function [bestsole,bestpop]=ga_scomplex(num,bounds,ps,pc,pm,b,dtc) % GA＿scomple是基于浮点编码的单纯形遗传算法主程序 % num定义种群数量 %　bounds定义参数取值范围，格式为[Var1min,Var1max;Var2min,Var2max;…….]; %ps选择概率 %pc交叉概率 %pm变异概率 %b　变异程度系数 %dtc　迭代次数 % $Date: 2005/5/25 $(funzione [bestsole,bestpop]=ga _scomplex (num,limites,ps,pc,pm,b,dc) % GA 655343;scomple;;;;;; % num % limits23450;[Var1min,Var1max;Var2min,Var22min;;;;;]; %ps %pc %pm %b _ %dtc _ % $Data: 2005 /5 /25 $)

[数据挖掘]数据挖掘部分算法的matlab实现 C4_5 比较经典的代码([Data Mining] part of data mining algorithms compare classic C4_5 realize matlab code)

说明：  test code for the previous code

说明：  5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线，请解释在误码率为0.01时，两种合并方式所表现的不同的物理意义。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真(自己编写代码S-Function方式)，分析所设计方案的时间同步精度，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真(自己编写代码S-Function方式)，画出比特信噪比与频率同步误差的关系曲线。 (5 In the three path Rayleigh channel, for direct sequence spread spectrum: (1) Please design a specific DS-CDMA code division guide-assisted channel estimation, receiver, etc were used to benefit the merger, the maximum ratio combining. With the Simulink simulation, BPSK BER performance measure, draw-bit signal to noise ratio and channel estimation mean square error of the curve, draw the signal to noise ratio and bit error rate curve, please explain in bit error rate 0.01, the two methods are combined performance of the different physical meaning. (2) frequency has been set up synchronization, a specific design of DS-CDMA single-stop sliding correlation method of time synchronization, simulation with Simulink (S-Function code their own way), analyze the design of time synchronization accuracy, draw bit signal to noise ratio and capture probability curve. (3) set time has been synchronized, a specific design of DS-CDMA frequency synchronization method, simulation using Simulink ()