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MATLAB2010a学习资料，从基础到精通，适合初学者(MATLAB2010a learning materials, from basic to proficient, suitable for beginners)

1. Extract files and run Audio_denoise_main.m file folder... 2. Click on Load & play Audio file and Original sound.wav file 3. Then using slider AWGN (White gauusion noise)...it is vary 1 to 10 set it to 10.. 4. now click on Add Noise and play... 5. u can save noisy signal by save noisy signal tab... 6. now wavelet... 7. thresholding.. 8. now click on Denoise and play....wait for some time...this will take 25 sec time 9. now save that denoised signal...and record all output parameters... 10. now click on clear all and exit

这是wimax标准的ldpc码的译码程序 编码程序在文件夹ldpc_minioffset/matlab中，为matlab的源程序(This is the standard ldpc wimax decoding program code program in the folder ldpc_minioffset/matlab in the source code for the matlab)

说明：  针对员工数目较多的公司，用于员工信息查询和工资计算(A relatively large number of companies for the employees, for employee information inquiries and payment of wages)

极化SAR，pauli分解San Francisco地区RGB合成图(Polarization SAR Pauli decomposition San Francisco RGB composite image)

该程序主要提供了信号多径传播的模型，直观看出多径的情况(The program provides a major multi-path signal transmission model, an intuitive multi-path to see the situation)

这是一个有关matlab的编程，是关于fm，dsb调制与解调的程序。(This is a question matlab programming is on the fm, dsb modulation and demodulation process.)

说明：  】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的 低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。(The logistic- map sequences to encrypt the watermark are used. The original audio signal in DWT (Discrete Wavelet Transform) domain is seperated into some pieces determined by the ratio between the length of the low frequency parts and the length of the encrypted watermark. Every bit of the watermark is added into the relevant pieces of the low frequency parts in the DWT domain. Experimental results show that the algorithm is robust against some StirMark attacks.)

对于淹没在复高斯白噪声中的信噪比为-5dB二次调频信号，在矩形窗长为256的情况下，滤波器组时频检测仿真(for drowned in the complex Gaussian white noise in the signal-to-noise-dB second FM signal in the long rectangular windows of the 256 cases, the time-frequency filters Detection Simulation)

二维交叉熵Matlab源代码，方便修改，用于计算图像压缩方面(Two-dimensional cross-entropy)