rayleigh_channel_code

在Matlab中编写了有向图算法的调用函数(The calling function of directed graph algorithm is written in Matlab)

实现对自己录制语音信号的加噪，并设计滤波器对其滤波。(To achieve their own recorded voice signal plus noise, and to design filters for its filter.)

将指纹图像分为好、中、差三类，然后根据典型的质量指标在各类质量中的影响度来设定相关的权重，以此可以更准确的表示图像质量，提高指纹识别的后续处理的准确性，系统的稳定性(Fingerprint image is divided into good, normal and poor, and then the typical quality indicators in the quality of the impact of various degrees to set the associated weight, this can be a more accurate representation of image quality and follow-up to deal with fingerprint recognition accuracy, system stability)

说明：  matlab处理音频信号显示音频信号的频谱图，然后滤波，并对滤波前后音频信号的频谱图进行对比，接着对原始音频信号的频谱去掉若干个点与远视音频信号的频谱比较，最后对音频信号的频谱及相位进行三维显示(audio signal processing matlab)

image fusion using particle of swarm optimastion

实用的电子书《偏微分方程的MATLAB解法》，是一部介绍常偏分方程的经典著作，偏微分方程必常微分方程更复杂，是研究非线性科学的必备工具书。(Practical e-book )

QC-LDPC码生成矩阵编程，围长为12，无4环(The program searches for a girth 12 QC-LDPC code given size of sub-matrix, row and column weights. The configuration of sub-matrices could also be changed. The program offers flexibility in constructing girth-12 QC-LDPC codes compared to other algorithms. The program builds a Tanner graph by connecting groups of rows and columns. A connection is made if it does not form less than twelve-cycles. The program may fail to find a code given particular parameters. It also does not find the smallest codes compared to other algorithms. )

均值滤波（线性平滑滤波）和中值滤波程序·······(Average value filter (linear smoothing filter) and value filter )

学习模糊控制的经典教材，是一本学习模糊控制的好书，值得大家学习！(Learning fuzzy control is one of the most classic materials, worth learning!)

Binary to decimal conversion and Decimal tobinary conversion.