Simulation

A semi blind technique for estimating the carrier frequency offset in OFDM communication systems is presented in this paper. The fractional and integer frequency offsets are esti-mated by employing a few null subcarriers in the rst OFDM symbol in a frame. While the conventional null subcarrier based methods estimate the offset by a single global search, the proposed method employs a two stage estimator, which greatly minimize the computational complexity.

Extract satellite ephemeris data from RINEX version 2.1 navigation data file.

matlab中使用不同参数的gauss基函数逼近圆弧 (the matlab using different parameters in gauss base function approximation arc)

通过分析缸内热力过程，建立柴油机燃烧冲程微分方程。基于MATLAB工作软件实现柴油机燃烧过程仿真。其中，柴油机结构及运行参数可根据实际需要修改；传热系数的计算采用埃歇尔伯格公式；微分方程求解采用四阶龙格-库塔方法，计算步长为5度曲轴转角（可修改）；采用单韦伯曲线模拟燃烧放热规律；仿真结束后，绘制燃烧过程P-V图和P-phi图。(By analyzing the cylinder thermodynamic process, the establishment of diesel combustion stroke differential equations. Based on MATLAB working diesel engine combustion process simulation software. Among them, the diesel engine structure and operating parameters according to the actual needs modification heat transfer coefficient calculated using the formula 埃歇尔伯格 differential equations solved by Runge- Kutta method to calculate the step is 5 degrees crank angle (modifiable) single Webber curve simulation combustion Law after the simulation, drawing the combustion process PV diagram and P-phi diagram.)

上传的这个Matlab源代码可以用于主成分分析以及核主成分分析，学者们可以通过此方法实现数据的压缩。(this can be used to have a Principal component analysis and a Kernel Principal component analysis by those research works)

Program for counting Bit Error rate

NARMA-L2 configuration for Frequency Control in three ar3ea poer system with 3 Refrence Model Of system to train Neural Network.

国外网站下载的程序包，包含mindist_classifier_type，pca，PNN，svm等几个算法程序，希望对大家有用。(Foreign website package, including mindist_classifier_type, pca, PNN, svm algorithm program, and several, we hope to be useful.)

Contourlet变换的Matlab工具箱(Coutourlet Transformation Toolbox in Matlab platform)

方程的数值解法，包含牛顿迭代法和基于牛顿法的史蒂芬森加速法。matlab实现，注释很详细。(Numerical solutions of equations containing the Newton iteration method and newton-steffensen method.Matlab, very detailed comments.)