ofdm3

基于小波变换的图像增强算法,我从专业数据库上下载的，应该有用(Based on wavelet transform image enhancement algorithm, I download on from the major databases, it should be useful)

这是一个用matlab实现的语音信号预测编码中的得宾算法部分。还有实验报告。(This is a realization of using Matlab voice signals of predictive coding algorithm part in Pennsylvania. There experimental report.)

采用雷克子波的地震波正演seismodelseismodel.m雷克子波的地震波正演(Lei Kezi wave seismic forward)

构造函数实现雪花分形，但是MATLAB运行当迭代次数过多会存在不足，实现较慢！(Constructor to achieve fractal snowflake, but the MATLAB run when the number of iterations too many deficiencies to implement slow!)

针对数字图片的各种攻击方法，使用Matlab编写。(Digital images for a variety of attack methods, the use of Matlab to write.)

说明：  最优控制的matlab例程，有需要的可以作为参考。(optimal control of Matlab routines that are needed can be taken as reference.)

This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

kalman filter在参数估计中的应用(Kalman filter to estimate the parameters of)

输入年份日期,现实是本年中的第几周.并且有图形界面(Enter the year date, the reality is that in the first few weeks of the year and a graphical interface)

LT码编译码过程 BP译码 BER性能 高斯信道(LT coding-decoding process BP decoding BER performance of Gaussian channel)