Wavelet-transform-image-denoising

matlab编程实例，各种仿真，经典仿真实例(matlab programming examples, a variety of simulation, simulation of the classic examples)

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

本程序是关于黄金分割法和差值的matlab程序源码(golden)

利用超星阅览器阅读的书籍，介绍关于Matlab的使用方法(Use Chaoxing reader to read books, information on the use of Matlab)

编码开关源代码，实现音响的音量控制前级输入，(Coding switch the source code to achieve sound volume control preamplifier input,)

说明：  合成孔径成像雷达的经典RD算法，可以用来在某些机载雷达上使用，或用于初学者仿真(Synthetic aperture radar imaging of the classic RD algorithm can be used in some airborne radar use, or for beginners Simulation)

different modulation schemes

认知无线电频谱感知方面的一些文章，希望对你有用(Aspects of cognitive radio spectrum sensing some articles, I hope useful to you)

对振动信号的降噪处理，运用小波三次分解分析(Vibration signal processing for noise reduction, the use of wavelet analysis)

一些雷达公式用matlab来表示 对学习雷达有帮助(Some radar equation using matlab to express learning Radar helpful)