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OFDM_MATLAB
一个完整的OFDM信号模拟程序,在4QAM调制下估计了OFDM的性能。(A complete OFDM signal simulation program, estimated at 4QAM modulation OFDM performance.)
- 2011-07-04 15:46:12下载
- 积分:1
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HEU_KMSActtivator
说明: 本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)
- 2021-04-15 12:12:28下载
- 积分:1
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Complete1976StandardAtmosphere
大气标准转换,适应于各类航空航天器飞行高度对应的状态查询(for caculator the variavles of air)
- 2010-12-03 17:54:15下载
- 积分:1
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target_KALMAN
基于卡尔曼滤波器的目标跟踪.有文档说明,代码与文中一致。(Kalman filter based target tracking. There documentation, code and the text is consistent.)
- 2014-11-18 20:49:36下载
- 积分:1
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Speech_Enhancement
一本关于语音增强的书籍,可作为研究人员的参考书使用,新版(A book on speech enhancement, can be used as a reference book for researchers)
- 2010-07-08 15:05:28下载
- 积分:1
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matlab_guide
matlab guide it will usefull for coding
- 2014-09-16 22:16:02下载
- 积分:1
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OMP
实现OMP算法,即压缩感知的还原算法,将M*1的矩阵还原成N*1的稀疏矩阵,M<<N.(Implementing OMP algorithm)
- 2014-11-17 17:29:48下载
- 积分:1
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Dig_Filter
digital filter which is used in design of the dig filter in dsp domain
- 2013-03-27 03:30:31下载
- 积分:1
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MathematicalPrinciples
自然哲学之数学原理,伟人的杰作,可以看看(Mathematical Principles of Natural Philosophy, the great masterpiece, you can see)
- 2010-09-29 13:52:58下载
- 积分:1
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MIMO
Estimation of CFO, MIMO.
- 2011-11-23 08:53:46下载
- 积分:1