cesheng

说明：  K-MEAN:经典K均值算法,适用领域：语音识别，图像识别(K-MEAN: classical K-means algorithm, the application areas: speech recognition, image recognition)

matlab code for modulator and demodulator M-QAM

dc-dc buck电路，仿真效果较好，偏差控制的很小，pi效果不错(DC-DC buck circuit, simulation effect is good, deviation control is very small, PI effect is good.)

基于Viterbi译码的硬判决与软判决接收机(Based on hard decision Viterbi decoding with soft decision receiver)

A Vector Quantization Technique for Image Compression using Modified Fuzzy Possibilistic C-Means with Weighted Mahalanobis Distance

FUZZY logic controller toolbox in Simulink

自学Matlab必备的个小程序代码，里面有十个，需要的下载(Small program code, which must self-Matlab ten, you need to download)

距离假目标干扰与对抗仿真验证，包括回波仿真实现，滤波跟踪，CFAR处理等一系列信号处理算法仿真实现，绝对的好东西。(read Chinese)

matlab编写画数据的柱状图，比较分析时有用(Matlab data column, comparative analysis is useful when)

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.