OFDM-SIMULATION-in-MATLAB

这是图像去噪的matlab程序源代码,可以对图像噪声有效地去除.(This is the image denoising matlab program source code, you can effectively remove the image noise.)

SVM原理简易教材：主要内容有SVM的理论基础，相关基础知识，线性支持向量机的求解，非线性支持向量机——核方法，算法归纳。 (SVM principles of simple materials: The main content of the theory of SVM based on relevant basic knowledge, support vector machine for solving linear, non-linear support vector machines- nuclear method, inductive method.)

matlab编写的线性对比度展宽算法，参数可以调整(matlab prepared by the linear contrast stretching algorithm)

In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.

可以看到 变步长未必会需要更长的时间 因为它是一种自适应的方式 如果某阶段情况理想的话 就会用最大步长来做 那就会很快 (can see variable step may not need a longer period of time because it is an adaptive way if a certain phase of the the ideal would be the greatest step will be to do it quickly)

isotopic linear non-dispersive material,absorbed boundary conditions, time step size dt is calculated. TF/SF region with one direction incident wave. Fourior Transformation and Reflectance and Transmittance

HMM Toolbox using sample ... fptoolbox.zip(Bio-Recognize - Matlab) - Fingerprint Recognition of this is ...

说明：  为MATLAB中的图形增加标签，从而可以有效地表示图形意义，防止读不懂图的情况( BWLABEL supports 2-D inputs only, whereas BWLABELN support any input dimension. In some cases you might prefer to use BWLABELN even for 2-D problems because it can be faster. If you have a 2-D input whose objects are relatively "thick" in the vertical direction, BWLABEL will probably be faster otherwise BWLABELN will probably be faster.)

求解legendre多项式的系数，N各点对应N阶legendre多项式，有N+1各多项式系数，采用递推公式，40阶后误差较大。(Solving legendre polynomials, N points corresponding to N-order legendre polynomial, there are N+1 coefficients of the polynomial, using recursive formulas, after the error of order 40 more.)

说明：  OCR, Unicode, Features, Support Vector Machine (SVM), Artificial Neural Networks