DiscreteFourierTransfrom

这个使用C编的stop operator，是s函数的格式。stop operator是Preisach 模型的一种基本模块。线性组合即成preisach 模型。(Stop operator, the C series is the format of the s function. The stop operator is one of the basic module of the Preisach model. The linear combinations Serve preisach the model.)

国外matlab，时间转换程序，层次清晰，有源代码，也有界面( Foreign matlab, time conversion process, the level of clarity, source code, there are interface)

matlab program of gmsk modulation

说明：  编写一个程序，对输入的图像进行哈夫曼编码，显示原图像的熵、编码后的平均码字长度、并能够根据编码重建出图像。 Sobel算子和拉普拉斯算子进行锐化，并比较结果。(Write a program to image the input Huffman coding, the entropy of the original image displayed, encoded, the average code length, and be able to reconstruct the image according to encoding. Sobel operator and Laplacian sharpening, and compare the results.)

Matlab编的初始对准程序，好不容易找到的，对学习惯导很有用(Matlab code of the initial alignment procedure, easy to find, very useful for learning INS)

dsge经济学模型的matlab仿真程序(matlab code aboat dsge)

电力系统中牛拉直角坐标方法的潮流程序，适用于MATLAB，数据已经附上，可以直接测试()

对图像进行锐化滤波处理，去除阴影噪声，得到清晰的图像(sharpen filter)

Sines. Sum sines. Every operations with sines and cosines.

说明：  OFDM是将高速串行数据分成成百上千路并行数据,并分别对不同的载频进行调制,这种并行传输体制大大扩展了符号的脉冲宽度,提高了抗多径衰落的性能。同时,在传统的频分复用方法中,各子载波之间的频谱互不重叠,频谱利用率较低。而采用OFDM技术,一个OFDM符号之内包括多个经过调制的子载波的合成信号,每个子载波在频谱上相互重叠,这些频谱在整个符号周期内满足正交性,因而在接受端可以保证无失真恢复,从而大大提高频谱利用率。(OFDM divides high-speed serial data into hundreds of parallel data channels and modulates different carrier frequency separately. This parallel transmission system greatly expands the pulse width of symbols and improves the performance of anti-multipath fading. At the same time, in the traditional method of Frequency Division multiplexing, the spectrum between the sub-carriers does not overlap each other, the spectrum utilization ratio is low. In the case of OFDM, an OFDM symbol consists of multiple modulated sub-carriers, each of which overlaps in the spectrum, which is orthogonal throughout the symbol period, thus, no distortion recovery can be ensured at the receiving end, thus greatly improving the spectrum utilization ratio.)