matlab_emd

QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.(As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate.)

本程序展示了小波分解， 重构，小波的高通滤波器，低通滤波器 的程序(This procedure demonstrated the wavelet decomposition, reconstruction, wavelet high-pass filter, low pass filter process)

OFDM同步技术仿真，带有码间干扰和半码调制，多信道衰落。(OFDM synchronization technology simulation, inter-symbol interference and a half with code modulation, multichannel fading.)

it is for image convolution

无线衰落信道下MIMO_OFDM系统的信道估计算法研究，较新的文章(wireless fading channel MIMO_OFDM the channel estimation algorithm research, the newer article)

perturb and observation simulation

说明：  consensus multi-agent systems fuzzy control

李亚普诺夫指数，检测混沌信号以及其检测混沌系统的依据(Lyapunov index and detection of chaotic signal and the detection based on chaotic systems)

MATLAB Codes for Calculate the line of sight Channel Gain

对于时间序列模型建立ARMA预测模型，可对未来值进行预报。(For the time series model, the ARMA prediction model is established, and the future value can be forecasted.)