qpsk_demod_ZiBian

Wireless Sensor Networks have been proposed for a multitude of location-dependent applications. For such systems, the cost and limitations of the hardware on sensing nodes prevent the use of range-based localization schemes that depend on absolute pointto- point distance estimates. Because coarse accuracy is sufficient for most sensor network applications, solutions in range-free localization are being pursued as a cost-effective alternative to more expensive range-based approaches.

频偏估计算法利用已经完成定时同步的同一个训练序列来完成小数频偏估计和整数频偏估计。(Offset estimation algorithm uses the same timing synchronization has completed a training sequence to complete the fractional frequency offset estimation and integer frequency offset estimation.)

用matlab编写的程序，关于MATLAB图像处理的中计算图像的欧拉数。(Matlab program, about calculation in matlab image processing of the euler number of image。)

matlab7编程提高篇之精彩实例教程matlab7 chapter of the wonderful examples to improve programming tutorial(matlab7 articles of wonderful examples to improve programming tutorial matlab7 chapter of the wonderful examples to improve programming tutorial)

说明：  gaussseidalmatlab programme

基于k近邻规则的PCA方法，改进的主元分析法用于故障诊断(PCA based on KNN)

RGB直方图，很直观的 大家可以下载 很简单(hist RGB)

傅里叶对直流突变信号的监测，与小波算法进行对比分析(Fourier DC mutation signal monitoring, and comparative analysis of wavelet algorithm)

this mfile is a code for simulation rice fading channels versus snr.

获取一个文件夹的创建时间、文件夹中文件内容及文件创建时间等信息(Get a folder was created, the contents of files in a folder and file creation time, etc.)