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tdmpnms-decode_ber
LDPC的分层NMS算法的matlab仿真程序，包含编码程序、译码程序以及画误码率图程序(NMS layered LDPC algorithm matlab simulation program, including coding procedures, as well as painting BER decoding process diagram program)
- 2014-01-09 12:21:51下载
- 积分：1
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Nonlinear_Matlab.m
非线性最小二乘法Matlab实现
f=x(1)*K^x(2)*L^x(3)-b
Cobb-Douglas生产函数(Matlab nonlinear least square method to achieve f = x (1)* K ^ x (2)* L ^ x (3)-b Cobb-Douglas production function)
- 2010-07-02 16:48:11下载
- 积分：1
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yangbenshang
样本熵 结合样本熵和谐波小波分解，MATLAB程序原代码(Sample entropy and sample entropy combined with harmonic wavelet decomposition, MATLAB program source code)
- 2009-02-12 13:07:25下载
- 积分：1
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Digital-Image-Watermarking
Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio.
- 2013-07-24 16:46:25下载
- 积分：1
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FIR
1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。
a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化，
而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使
得阻带衰减减小，但能够减小过渡带。
b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽
度变化、主瓣副瓣比值变化情况。
2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI,
阻带衰减不小于 40dB,通带衰减不大于 3dB.
a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否
满足要求，二者有什么不同。
b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型
(hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变
化。
3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。
4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率
ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter.
For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is
The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter.
In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and
Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter
Transition bandwidth.)
- 2017-07-06 11:55:24下载
- 积分：1
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cut_sample
说明： 使用二分法对样本集进行剪辑，剪辑法的思想，就是将样本集分成训练集与考试集， 利用训练集样本对考试集的样本进行分类（使用近邻法），如果考试集中某个样本分类错误的话，将这个样本删除。在该函数中，使用最近邻法，只进行一次剪辑（遍历完考试集中的样本以后退出）。还有一种重复剪辑法（适用于样本比较多的情况），把样本随机分为多个样本集，将相邻的两个样本前一个作为考试集，后一个作为训练集，调用二分剪辑。所有的样本子集剪辑完毕以后，在递归调用，直到没有样本被剪辑掉,没得讲，重复剪辑的效果肯定好一些。
(The sample sets using the dichotomy of the clips, editing law idea is to sample set into training set and test set, using the training set samples to the test set of samples (using the nearest neighbor algorithm), if the examination focused on a sample of classification error then delete this sample. In the function, use the nearest neighbor method, only once clips (focused on a sample of traversal finished after the exit exam). There is also a repeat clip method (samples are more applicable to the case), the samples were randomly divided into multiple sample set, the two adjacent samples of the former one as a test set, the latter one as a training set, call the two sub-clips. All the samples were a subset of the clips after they have finished, in the recursive call, until there are no samples were clip out, did not have to say that the effect of repeated clips definitely better.)
- 2010-03-19 11:13:13下载
- 积分：1
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CACC-and-CAIM
CACC和CAIM_算法函数库，MATLAB版本(CACC and CAIM_)
- 2011-06-16 09:30:58下载
- 积分：1
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Dijkstra算法
迪杰斯特拉算法求最短路径距离，可用于流形测地距离计算中。(Dijkstra algorithm for the shortest path distance, can be used for manifold geodesic distance calculation.)
- 2017-07-24 17:13:31下载
- 积分：1
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Mathlab
数值分析算法集合 各种算法 带例子 具体见“算法.txt”(Set of algorithms numerical analysis algorithm with specific examples, see " algorithm. Txt" )
- 2010-08-26 09:39:22下载
- 积分：1
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postinm
reads files and an offset to the coordinates of the selected objects
- 2010-12-16 20:41:45下载
- 积分：1
