artifical-neural-network

Construct the short length of QC LDPC codes without girth 4 and girth 6(The Program to construct the short length of QC LDPC codes without girth 4 and girth 6 Copyright (C) Yang XIAO, Jun FAN, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn. This program presents an approach [1] for constructing the short length of LDPC codes with girth 8. First, we design 3 submatrices with different shifting functions given by our schemes, then combine them into a matrix according to our approach, finally, expand the matrix into a desired parity-check matrix using identity matrices and cyclic shift matrices of the identity matrices. The simulation results in AWGN channels show that the codes which can be obtained by the generator matrix derived from this check matrix for encoding the random information bits are as good as random LDPC codes [1]. Ref: [1] J. Fan, Y. Xiao, “A design of LDPC codes with large girth based on the sub-matrix shifting”, IET International Conference on Wireless Mobile and Multimedia Networks Proceedings (ICWMMN 2006), (CP525), p. )

利用共振解调，分析齿轮和轴承的信号，找出故障频率，此为源代码。(Using the resonance demodulation analysis the gear and bearing signals to identify the frequency of failure, this is the source code.)

极化敏感阵列主板抗干扰性能分析与测试，体现极化敏感阵列利用极化予信息抗干扰的性能优势(sensitive polar array)

这是用Matlab编写的萤火虫算法。这是一种群体智能算法，在优化中有广泛的应用。(It is used Matlab prepared Firefly algorithm. This is a swarm intelligence algorithm, widely used in optimization.)

地震子波波形显示及一维地震合成记录，以雷克子波为例(Seismic Wavelet and synthetic seismogram)

matlab学习课件 还算比较详细 值得看看(matlab learning courseware still worth a look in more detail)

uitable example to use Matlab Gui

this paper talks about ofdm synchronization for selective fading channels,hope it to be of help to evrybody

用MATLAB实现MIMO系统盲辨识，包含详细的说明文件和源码，非常经典(Using MATLAB realize blind MIMO system identification, contains a detailed documentation and source code, very classic)

k mean clustering in matlab