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spreadspectrum
In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of
the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.
- 2012-04-12 20:54:14下载
- 积分：1
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5th-IBM-MATLAB
Tactial+and+Strategic+Missile+Guidance一书第五版 Matlab格式程序代码(Tactial+and+Strategic+Missile+Guidance book fifth edition of the the Matlab format of the program code)
- 2013-04-06 22:56:45下载
- 积分：1
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signal-spectrum-estimation-
特征空间方法是现代谱估计的重要方法之一。针对噪声中的复正弦信号的模型，通过特征矢量的方法进行信号空间的分解。通过将信号空间分解为谐波信号空间和噪声信号空间这两个相互正交的空间的方法进行谱估计。Pisarenko,Music,ESPRIT算法都是这一类方法的重要算法。我们通过对不同算法进行比较分析不同算法在各种状况下的表现性能。并针对ESPRIT算法的各种改性和提升进行对比和测试。(Feature space is one of the modern spectral estimation method. Complex sinusoidal signal for the noise model, by the method of the feature vector for the decomposition of the signal space. By decomposition of the signal space to the space harmonic signal and the noise signal space, the method of the two mutually orthogonal spatial spectrum estimation. Pisarenko, MUSIC, ESPRIT algorithm is an important algorithm of this type of method. Different algorithms, our comparative analysis of the performance of different algorithms performance under a variety of conditions. And for a variety of modification and upgrading of the ESPRIT algorithm to compare and test.)
- 2013-04-18 10:39:45下载
- 积分：1
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A-correlation-analysis
一个用相关分析法来辨对象数学模型的程序和仿真框图(A correlation analysis using mathematical models to distinguish the object diagram of the procedure and simulation)
- 2011-04-25 15:57:46下载
- 积分：1
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OFDM
这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模
块，并统括系统性能的仿真验证了系统设计的可靠性
(This is a relatively complete simulation of OFDM communication system design, including coding, modulation, IFFT, and down conversion, Gaussian channel model, FFT, PAPR suppression, various synchronization, demodulation and decoding module block, and a master system simulation performance of the reliability of system design)
- 2011-04-20 13:35:12下载
- 积分：1
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kmeansclustering
this is a kmeans clustering code writen in matlab
- 2011-07-21 17:04:32下载
- 积分：1
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OutputText
OutputText.rar例子，关于txt输出，注释的特别详细(OutputText，special for txt)
- 2013-12-10 10:14:33下载
- 积分：1
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neuralNET
This source code use neural object to help student to understand the way to design the neural network using perceptron rule.
- 2010-07-28 10:31:57下载
- 积分：1
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para
matlab guide 中设计参数表，利用Activexcell实现，容易实现及掌握(matlab guide the design parameters in the table, using Activexcell realize, easy to realize and grasp the)
- 2008-04-07 16:59:19下载
- 积分：1
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45666018FFTpowerspectrumandtheestimated
FFTpowerspectrumandtheestimated 利用 matlab编写的频谱估计源代码(FFTpowerspectrumandtheestimated using MAtlab)
- 2009-05-27 18:50:52下载
- 积分：1
