数字信号识别

最小二乘回归分析算法，用matlab修解一元线性回归问题(zuixiaoercheng)

OFDM信号的编码译码仿真，英文说明更详细。(This simulation script set allows for an OFDM transmission to be simulated. Imagetx.m generates the OFDM signal, saving it as a windows WAV file. This allows the OFDM signal to be played out a sound card and recorded back. Imagerx.m decodes the WAV to extract the data. settings.m contains all the common settings to specify all the simulation parameters such as FFT size, number of carriers, input data source file, input and output WAV files, etc. See settings.m for more details. Note: The both the receiver and transmitter must have a copy of the input data file, as this is used for calculating the exact number of data words in the transmission. The scripts should work as extracted. Just run imagetx.m to generate the OFDM signal. Then run imagerx.m to decode the signal. The initial settings transmit a wave file Corrs.wav . The decoded OFDM data ( Out.wav ) can be compared with the original data by listening to the two wave files.)

说明：  图像压缩去噪增强锐化程序，供大家参考。 包括：数字图像矩阵数据的显示及其傅立叶变换 二维离散余弦变换的图像压缩 采用灰度变换的方法增强图像的对比度 采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 图像的自适应魏纳滤波 运用5种不同的梯度增强法进行图像锐化 图像的高通滤波和掩模处理 利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-(Sharpen Image Compression Denoising enhanced procedures for your reference. Include: digital image data display matrix and its Fourier transform two-dimensional discrete cosine transform image compression method using gray-scale transformation of the contrast-enhanced images using two-dimensional median filter function by medfilt2 of salt and pepper noise image filtering using MATLAB The function affected by noise interference filter2 images mean filter Adaptive Image Filtering Wehner use five kinds of different gradient method to enhance image sharpening images of high-pass filtering and mask treatment using Butterworth (Butterworth) low pass filter noise by smoothing the images deal with the use of Butterworth (Butterworth) high-pass filter for sharpening images treatment)

残差定阶方法的例程，附模型所需的数据，希望对大家有用。(The residual method of order determination routine, with the required data model, the hope that useful.)

matlab命令行环境的常用操作 再发个详细的，大家帮忙给顶顶 (Matlab command line environment of commonly used operating again issuing a detailed, after another to help everyone)

说明：  实现任意直线对多边形的分割，返回生成的多边形顶点坐标(An arbitrary line of division of the polygon，Return vertex coordinates of polygons generated )

核直接线性判别方法（kdda），主要用于人脸识别，模式分类。(nuclear direct linear discriminant method (kdda), mainly used for face recognition, pattern classification.)

判断参数的影响因素，本人已亲测，请大家放心下载(Judging the influence of parameters)

k均值聚类，有聚类数目，聚类中心，实现有效聚类。(k-means clustering, there is the number of clusters, cluster centers achieve effective clustering.)

infinite impulse response filters (IIR).. included LPF,HPF, BPF and BSF.. both butteworth and chebyshev..