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UWB，超宽带信号分析必用的子函数，第9部分！(UWB, ultra-wideband signal analysis will be used for Functions, Part 9!)

该文件主要包括了matlab的一些主要应用例程!对学习matlab很有帮助(The documents include the Matlab routines, some of the major application! Matlab helpful for the study)

POWERLAW ON IMAGE PIXEL

说明：  多元LDPC码的PS构造算法的matlab程序(PS of the multi-LDPC codes constructed algorithm matlab program)

a simple method of pca. how to find mean and to normalize data

数字识别的matlab仿真，通过图像裁剪，再有神经网络训练，可以达到很好的效果 (Digital Identification of matlab simulation, cutting through the images, there was a further neural network training, can achieve good results)

one paper about the power system electronic ieee

OFDM调制解调算法中的下变频算法以及matlab的实现方法(Down-conversion algorithm OFDM modulation and demodulation algorithm and MATLAB implementation)

用小波去噪，不同尺度下的阀值去噪，去噪效果的对比很不错(Using wavelet denoising, different scales of threshold denoising, contrast denoising effect is very good)

基于遗传算法的PID参数整定。由系统的阶跃响应曲线可见，系统是稳定的，且调节时间较短。(PID parameter tuning based on genetic algorithm.)