time-frequency-analysis

实现哈夫曼编码的matlab程序，可用于图像压缩处理，还可以计算出压缩率。(Matlab program to achieve Huffman coding can be used for image compression, the compression ratio can be calculated.)

(2,1,2)卷积码链路仿真,采用viterbi译码算法,采用m语言编写,并非直接调用matlab内部函数,有助于对viterbi译码算法的理解((2,1,2) convolutional code link simulation using viterbi decoding algorithm using m language, not directly call matlab internal function, contribute to the understanding of viterbi decoding algorithm)

对所采集的数据点进行分析，可进行模态分析，阻尼特性识别等。(Of data points collected for analysis, modal analysis can be performed, the damping characteristics of recognition.)

Face Detection System Main function

说明：  用来测试基本的协同过程cooperative,一个协作通信系统的仿真,包括AF,DF协作方式,接收端采用不同的合并方式(最大比合并,选择合并)进行合并.根据接收端不同的接收合并方式进行最优功率分配(Design of cooperative system)

说明：  EM算法，最大期望值算法，用MATLAB程序来编程(EM algorithm, expectation maximization algorithm using MATLAB program to program)

跟踪中心轨迹内点法 算最优潮流 可以输入任何节点数据(The central path following interior point method to calculate the optimal power flow)

基音监测的有关程序，很好的，自己编写的，可以用(Pitch monitoring procedures, very good, I have written, you can use)

As we know, the energy needed for sensors should be electrical. So the rst step before start to work is to convert environmental energy to electrical one. Inside the node there are dierent components for sensing the area, collecting data and processing the data. So the main dierent part of this kind of nodes, in compare of WSN nodes, is the power part. Once the stored energy reach to a certain amount, the power supply for micro controller and transceiver will start to work. They will continue to work until they have energy, as soon as the energy nish, they stops and energy storage device start to work to save energy again. The other fact should be consider about EH-WSN node is that the available energy can change in dierent nodes. So every node has its own harvesting rate.

MATLAB6.5接口编程(本人加了目录).(MATLAB6.5 Programming Interface (I added a directory).)