quantmod

System CBIR in Matlab

OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。 频率选择性信道的特征在于延迟扩展或相干带宽，其测量频率中的信道去相关。 相干带宽与均方根（RMS）时延扩展成反比。 通过选择与信道相干带宽相关的子载波间隔，OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。 适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity. Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency. The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread. By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels. Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)

说明：  书籍：《最优化计算方法及其MATLAB程序实现》电子资料(Books: Electronic Material of "Optimum Computing Method and Its Realization in MATLAB Program")

分别用最邻近插值算法和双线性插值算法在matlab上实现图像的缩放.word文档。附有算法原理以及实现效果。(Image scaling using the nearest neighbor interpolation algorithm and bilinear interpolation algorithms were implemented on matlab)

Matlab 脑电信号转mat数据工具包，脑电研究的福音。(EEG data transfer mat Matlab toolkit gospel EEG studies.)

分段异常信号实验，几个不同频率的信号叠加用HHT方法进行分解，是我做实验用的信号，验证无误，(Abnormal signal sub-experiment, several different frequency signal superimposed with the HHT method of decomposition, I did experiment with the signal, verify the correct)

IEC协会推荐的电压波动和闪变的测量计算方法，并含相关的IEC标准和国标（这些标准很难找到免费的）(IEC Association recommended voltage fluctuation and flicker measurement and calculation methods, and with the relevant IEC standard and GB (hard to find these standards for free))

AK_model_and_Learning_by_doing_model matlab code

说明：  很经典的粒子滤波程序，有详细的演示以及相关的应用

统计信号处理渐进无偏估计等内容的仿真实现，可以参考(Statistical signal processing, etc. Progressive unbiased estimate of Simulation)