ex10

双线性变换法设计带通滤波器，凯泽窗法设计带通滤波器(Bilinear transform band-pass filter, the Kaiser window method designed bandpass filter)

这是学习matlab的好的程序，希望大家转载(This is a good learning Matlab procedures in the hope that we reprinted)

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. )

Display complex-valued data using domain coloring

这是介绍DDC中常用CIC的设计仿真matlab程序。很有参考价值。(DDC is commonly used in CIC introduced the design of simulation matlab program. Useful reference.)

分别利用fisher判别法和近邻法对一组声呐数据进行模式识别，计算分类的正确率(Respectively, and the use of fisher discriminant method nearest neighbor method sonar data to a set of pattern recognition, to calculate the correct classification rate)

在符号间干扰情况下，通过自适应均衡消除码间串扰的影响。均衡算法采用LMS，简单的线性横向滤波器(In case of ISI channel,we exploit adaptive equalization with LMS alogithm to defend the influence. )

《MATLAB高效编程技巧与应用：25个案例分析》,很好的matlab学习资料("MATLAB efficient programming techniques and applications: 25 Case Studies" good matlab learning materials)

设定房间大小，并设定T60衰减系数，该软件根据声场理论，计算室内声场多途情况，还可以生成mex64文件，供MATLAB调用(The size of the room is set and the T60 attenuation coefficient is set. The software calculates the indoor acoustic field multipath according to the sound field theory, and also generates mex64 files for MATLAB calls.)

根据实测加速度振动信号，求取功率谱密度，为疲劳分析提供数据支撑(According to the measured acceleration vibration signal, the power spectrum density is obtained, providing data support for fatigue analysis.)