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base2fft
根据DFT的基二分解方法,可以发现在第L(L表示从左到右的运算级数,L=1,2,3…M)级中,每个蝶形的两个输入数据相距B=2^(L-1)个点,同一旋转因子对应着间隔为2^L点的2^(M-L)个蝶形。从输入端开始,逐级进行,共进行M级运算。在进行L级运算时,依次求出个2^(L-1)不同的旋转因子,每求出一个旋转因子,就计算完它对应的所有的2^(M-L)个蝶形。因此我们可以用三重循环程序实现FFT变换。同一级中,每个蝶形的两个输入数据只对本蝶形有用,而且每个蝶形的输入、输出数据节点又同在一条水平线上,所以输出数据可以立即存入原输入数据所占用的存储单元。这种方法可称为原址计算,可节省大量的存储单元。附件包含算法流程图和源程序。(err)
- 2008-04-20 23:11:05下载
- 积分:1
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minFunc
梯度下降法工具箱,包括了L_BFGS等。MATLAB版(gradient descent toolbox, including L_BFGS, MATLAB edition)
- 2015-12-09 09:49:25下载
- 积分:1
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2177e8d3adb15fabed33322ffd32afc8394a
说明: an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer
physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA
has been used widely. These systems suffers from multiple access interference because of other users transmitting
in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA
system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by
shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security.
This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system.
These sequences by chaotic maps are generated.
- 2019-03-13 22:41:27下载
- 积分:1
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teach-MATLAB
MATLAB教程 很详细 好好学啊 里面有源代码 值得一看(MATLAB tutorial is very detailed good school inside the active code worth a visit)
- 2013-03-23 23:59:25下载
- 积分:1
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NewInt
NewInt案例,主要是以matlab軟件來運算標準題型。(NewInt cases, mainly matlab software to compute the standard questions.)
- 2013-12-17 14:44:41下载
- 积分:1
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matlabshu
说明: 基于MATLAB的通信原理实验设计和仿真研究 一篇不错的文章 对初学者用处挺大的(Principles of communication based on MATLAB simulation of an experimental design and good articles for beginners use with the large)
- 2010-04-03 12:01:00下载
- 积分:1
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Kalman-Filtering
卡尔曼滤波的matlab实现,以以及卡尔曼滤波matlab实现过程中出现问题的解决方法(kalman filter matlab)
- 2013-10-11 18:31:06下载
- 积分:1
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NLS
Solving Non linear Schrodinger Equation in Optical Communication
- 2013-04-02 02:57:46下载
- 积分:1
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sintesizer
Prototype Synthesizer Reconstruct one signal using FFT
- 2013-05-11 00:37:08下载
- 积分:1
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filin
It is a hologram file player/processor example.
- 2015-04-17 23:18:36下载
- 积分:1