fft_direct

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

自编 包括动态时间校准算法 求snr算法 及其子程序(Including dynamic time self-calibration algorithm for SNR algorithm and its subroutine)

说明：  forward处理程序，使用于煤炭、石油、天然气行业(forward processing procedures used in coal, oil, gas industry)

water marking of an image.you can use the code.please try to run the code

分数阶傅里叶变换 Matlab仿真实现 单分量的LFM信号的检测和参数估计( Fractional Fourier Transform Matlab simulation to achieve a single-component LFM signal detection and parameter estimation)

NMF矩阵分解算法可用于高维数据分解和降维处理分析。(NMF matrix decomposition algorithm can be used for high-dimensional data decomposition and dimension reduction analysis.)

MATLB7.0遗传算法工具箱压缩文件，包括遗传算法函数，实例(MATLB7.0 genetic algorithm toolbox compressed file, including the genetic algorithm function instance)

本代码是基于Bell-Se jnowshi ICA算法的独立元素分析matlab代码。(The matlab code forindependent component analysis is based Bell-Se jnowshi ICA algorithm )

just an example about Monte Carlo simulation in matlab

Thresholding is used to segment an image by setting all pixels whose intensity values are above a threshold to a foreground value and all the remaining pixels to a background value. Whereas the conventional thresholding operator uses a global threshold for all pixels, adaptive thresholding changes the threshold dynamically over the image. This more sophisticated version of thresholding can accommodate changing lighting conditions in the image, e.g. those occurring as a result of a strong illumination gradient or shadows.ff