adpt_pd_ctrl_52

We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.

利用自适应RLS算法消除信号中的工频干扰，纯净信号选为数字调幅信号8ASK，工频干扰为一余弦信号，滤波后取得的很好的效果。(Adaptive RLS algorithm for the elimination of the use of signal-frequency interference, and pure signal selected as the digital AM signal 8ASK, power-line interference is a cosine signal, after filtering achieved very good results.)

image segmentation, find in other sits

说明：  多网格的源程序，希望对大家有帮助，好东西一起分享(Multi-grid source, we want to help, to share good things)

龙格库塔法的求解，将精确解（1）和龙格库塔法的图像放在子图一中，将精确解（2）和龙格库塔法的图像放在子图一中。(Runge-Kutta)

color images secment code matlab

自编的MATLAB遗传算法代码，用简单遗传算法(Simple Genetic Algorithm or Standard Genetic Algorithm ，SGA)求取函数最大值(Optimizing a function using Simple Genetic Algorithm with elitist preserved )

一个双馈电机的风机模型 给大家看看 分享一下(A double-fed motor and fan model for everyone to see share)

说明：  利用反步法设计的控制律，进行轨迹跟踪仿真。(Using the control law designed by backstepping, the trajectory tracking simulation is carried out.)

本程序是用matlab实现指纹识别。里面附带指纹图片，并用其作为例子实现指纹图像的匹配。(This procedure is used to achieve fingerprint matlab. Attached inside the fingerprint image, and its image as an example the realization of the matching fingerprint.)