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CDMA_programme
使用simulink对CDMA进行的模拟仿真。(Carried out by using the simulink simulation of CDMA.)
- 2010-12-08 10:10:02下载
- 积分：1
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QC_codes
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. )
- 2009-05-28 16:00:14下载
- 积分：1
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Matlab
nonmaxsup——非最大值抑制
hysthresh——设定阈值区间，返回一个二值化图像
canny——边缘探测，图像边缘增强
adjgamma——调整图像的伽马值
findline——利用线性Hough变换和Canny边缘探测得到的线上各点的坐标
circlecoords——返回由圆的半径和圆心坐标决定的圆上各点像素的坐标
houghcircle——取一幅经过canny变换的图像，利用hough变换找到图像中的一个圆
findcircle——计算所得线上各点的坐标归纳出一个圆的半径和圆心，确定该圆的各点坐标
gaborconvolve——利用一维盖伯滤波器对图像进行处理
gethammingdistance ——返回两幅虹膜图像提取的特征码之间的海明距离
linecoords——返回一条线的上各点的x,y坐标值(nonmaxsup- non-maximum suppression hysthresh- set the threshold range, returns a binary image canny- edge detection, image edge enhancement adjgamma- adjust the image' s gamma value findline- linear Hough transform and Canny edge detection get the coordinates of each point circlecoords online- Returns coordinate houghcircle on the circle of the radius and center coordinates of the points decision pixels- After taking a picture canny transformation, using hough transform to find the image of a circle findcircle- the calculated coordinates of each point line summed up a circle of radius and center, to determine the coordinates of each point of the circle gaborconvolve- using a 维盖伯 filter for image processing gethammingdistance- returns two iris images extracted linecoords Hamming distance between the signature- a return line to the points on the x, y coordinate values)
- 2014-05-10 17:18:37下载
- 积分：1
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c13_tiv2
现在通信系统中信号通过衰落信号引起的多普勒扩展程序(Now the signal communication system caused by the decline of the Doppler signal extender)
- 2010-09-19 10:38:00下载
- 积分：1
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Constrained_PSO_operator
带约束算子的粒子群算法，希望对大家的学习研究有所帮助。(Constrained PSO operator, we want to study and research help.)
- 2010-05-07 08:15:51下载
- 积分：1
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temperature-good
温度模拟程序,适合各学科研究，非常好用 欢迎下载
- 2012-06-04 11:27:53下载
- 积分：1
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k-means-matlab
k-means均值算法matlab语言写的，很实用的源码(k-means means algorithm matlab language, very useful source)
- 2013-12-16 15:30:24下载
- 积分：1
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thresh
用matlab编写的最大方差法计算灰度分割门限代码，用该函数实现利用灰度阈值分割图像的功能。(Written by matlab calculate the maximum variance threshold gray code split, with the functions for image segmentation using gray scale features.)
- 2010-12-27 17:46:42下载
- 积分：1
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laser_New
光纤激光器仿真程序，matlab写的,是一个不错的程序(fiber laser)
- 2014-11-15 19:46:48下载
- 积分：1
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image_processing
本代码在MATLAB中采用均方误差和测度两种评价参数对维纳滤波和L-R算法复原的加入噪声的运动模型和高斯模型的图像复原效果进行了比较(The code in MATLAB using the mean square error and two evaluation parameters measure the effect of exercise on the model image restoration Wiener filtering and restoration LR algorithm and Gaussian noise is added to the model were compared)
- 2014-02-17 14:54:21下载
- 积分：1
