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3
说明: 阐述了WLAN技术的发展现状,并详述IEEE802.11ac/ad标准中新增关键技术。MU-MIMO及MAC层增强技术是IEEE802.11ac标准中的两大新增技术,而多频段互操作快速会话迁移(FST)技术以及自适应波
束赋形技术是IEEE802.11ad标准中的关键技术改进,同时进一步阐述了802.11ad标准中支持的不同物理层类型及其应用场景。
(The development of WLAN technology, and describes the new key technology in IEEE802.11ac/ad standard)
- 2013-05-02 20:10:57下载
- 积分:1
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SVM-iris
说明: 本人用matlab编写的支持向量机的程序,在数据集iris上进行实验,识别效果不错(I have written in with support vector machine matlab program, in experiments on the iris data set, identify good results
)
- 2020-11-16 18:29:40下载
- 积分:1
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newtonhuan
这个程序可以实现牛顿环(Newton s rings)的演示, 其中可调参数包括波长,
透镜曲率半径及最低点空气缝隙的厚度.参数的调节是通过欢快实现的,其中颜色
随波长近似的变化. 本程序可以增进读者对牛顿环的理解.(this procedure can be achieved Newton Central (Newton's rings) demonstration. with adjustable parameters including wavelength, lens curvature radius and minimum thickness of the air gap. Parameter adjustment is achieved through the jubilant, With these color changes in the wavelength approximation. The procedure can improve readers to understand the Newton ring.)
- 2006-10-22 19:09:30下载
- 积分:1
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22
说明: 给仿真信号加入噪声信号,比如白噪声、有色噪声等等(Added to the simulated signal noise signal, such as white noise, colored noise, etc.)
- 2014-08-05 16:10:04下载
- 积分:1
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HPSO
Hierarchical-Particle-Swarm-Optimization-Algorithm
- 2018-12-12 17:24:32下载
- 积分:1
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TSP
说明: 很实用的MATLAB程序 解决TSP问题(MATLAB program is very useful to solve TSP problem)
- 2009-08-23 09:04:39下载
- 积分:1
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xiangguanxishufaEEMDzhenshifenliang
通过相关系统法滤除集成经验模态分解(EEMD)中的虚假分量(Filtered through the relevant system integration method empirical mode decomposition (EEMD) the false component)
- 2013-08-28 16:49:21下载
- 积分:1
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DCTlicheng
研究表明,构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时,离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵,所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵,即除了对角线元素以外,其它很多元素都近似为0,并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大,亮度突变只占少数,即图像能量以低频成分为主的特
性。通过变换后的量化,舍弃对视觉效果影响较小的次要信息,可达到进一步的压缩效果。
虽然从去相关性能的意义上讲,DCT是一种次于K一L变换的准最佳变换,但是从算法实现的角度来看,DCT则远远优于K一L变换。首先,当图像的分块大小确定后,DCT的变换矩阵也就随之确定了,不随输入信号的统计特性变化而变化 其次,二维DCT能够分解成两次一维DCT,有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分:1
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Atenna
天线电磁场仿真MATLAB模型,是天线计算中的不错教程(Atenna and EM modeling with matlab)
- 2009-03-11 18:02:51下载
- 积分:1
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minfo
matlab用于计算变量间互信息的代码,可用于特征筛选(Matlab code for calculating mutual information between variables)
- 2019-03-25 10:54:08下载
- 积分:1