PCA

this is the tool box for queuing analysis

支持向量机用于回归，在MATLAB里实现的。方便好用(Support vector machines for regression, implemented in MATLAB in. Is easy to use)

利用matlab实现现代法功率谱估计的源代码，没有调用函数，希望对大家有用(Using matlab source code power spectrum estimation of modern France, and call the function, and the hope that useful)

讲解matlab的命令，内容非常全面，是我目前matlab主要参考书籍之一(matlab books, the content is very comprehensive, matlab Yes I am currently one of the main reference books)

说明：  MATLAB编程（英文影印版第二版），老师给我们推荐的一本书，觉得不错，发给大家。(MATLAB programming (Degowin 2nd edition), we recommend to the teachers of a book, think it's good, to everyone.)

PMSM的电流滞环比较法和ＳＶＰＷＭ法的仿真模型 (PMSM current hysteresis SVPWM method of comparative law and a simulation model)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度

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.)

小波变换进行图像压缩 采用matlab编程 (Wavelet transform for image compression Using matlab programming)

采样定理 用来对模拟信号进行采样 使其变成数字信号 观察其频谱(Sampling theorem is used to carry out sampling of analog signals into digital signals so that it observe the spectrum)