nihe

the algorithm of cross validation

说明：  S 函数 编写的 PID程序 在MATLAB上 调试成功 请大家参考(S function to write the PID program debugging success in MATLAB reference)

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.)

基于小波变换的图像压缩在matlab上实现对SAR图像的压缩(Based on wavelet transform image compression on matlab implementation of SAR image compression)

It is matlab simulink file that contained a simple model of renewable energy system like wind solar battery. It is useful to see how the system model and how it is demenstrated as a system.

matlab实现牛顿插值，一个简单的程序(matlab implementation of Newton interpolation, a simple procedure)

文档里面有详尽的Matlab绘图命令介绍，较为好用。。。(A document,which has a detailed description of Matlab drawing commands, is really useful. . .)

Power Electronics Simulation for beginner

这是一个对磨床加工工件工序问题建模求解的MATLAB程序，方法可靠(This is a workpiece grinding process modeling and solving the problem of the MATLAB program, method is reliable)

添加水印，在图项中添加，matlab，实现图像的保护等等 (Add watermark, add items in the map, matlab, image protection, etc.)