+QPSKwithmatlabcode

本程序设计的是咬尾编码的turbo码，用matlab编写。咬尾turbo码也即不需要拖尾比特，使得前后两个状态相同，译码采用修正的MAP译码算法。此文件为turbo码译码一般的MAP算法，程序中用作与咬尾turbo译码的对照(This program is designed to encode the turbo tail biting code, written with matlab. Tail biting turbo code that is not trailing bits to make the same before and after the two states, the MAP decoding using modified decoding algorithm. This document is a general MAP turbo decoding algorithm, and biting the end of the program for the control turbo decoding)

说明：  OFDM完整仿真程序 包括QAM，qpsk调制仿真(OFDM Simulation Using Matlab,The perfect simulation of OFDM)

identification of system using kalman method

相位相关配准，图像匹配，图像处理，matlab源码(phase correlation registration, image matching, image processing, Matlab FOSS)

说明：  关于MATALAB的书籍文章很经典值得一看解压后必须使用超星浏览器观看(MATALAB article on classic books worth a visit after decompression must use a browser Chaoxing Views)

对电路板的图像进行分割，可以提取电路板中的目标物，以对电路板进行检测。文章使用K均值聚类算法完成对电路板图像的分割，针对传统的K均值聚类算法的不足，提出了使用直方图波形的有效波峰个数来确定K值的大小，并通过使用一种比传统的绝对误差的表示更简洁的表达式，达到了快速分割的目的。对一些电路板图像分割的实验结果表明，文章的方法能够根据目标物的数目有效的确定K值的大小，且比传统的K均值算法减少了运算量及计算时间。 (On the circuit board image segmentation, to extract the target board to the circuit board for testing. Article using the K means clustering algorithm to complete the circuit board image segmentation, the traditional K-means clustering algorithm, the paper proposes the effective use of histogram peak wave number of K values to determine the size, and by using a ratio of absolute error of the traditional expression that is more concise, to the fast segmentation. For some circuit board image segmentation results show that the method can be according to the article the number of valid target value to determine the size K, and K-means algorithm than the traditional reduced computation and computing time.)

高斯低通，高斯高通滤波器。matlab实现，用于图像平滑处理，去噪，和锐化。(gaosi，filter。)

fdtd 电磁计算 三维电磁仿真技术 电磁场计算 fdtd 算法(fdtd Em compute em field calculation )

Voltage Control by DQ Frame Technique of SVPWM ACDC Converter

分数延迟FIR滤波器的实现，分别使用了最小二乘法，拉格朗日插值法以及优化加权最小二乘法。(Fractional delay FIR filter implementation, using the least square method, the Lagrange interpolation method and optimization of weighted least squares.)