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kuopin
直接序列扩频系统（DS，Direct Sequence）又称为直接序列调制系统或伪噪声系统（PN 系统），简称为直扩系统，是目前应用较为广泛的一种扩展频谱系统。要传送的信息经伪随机序列编码后对载波进行调制。在发信端越冬用扩频序列去扩展信号的频谱，在收信端，用相同的扩频友序列进行解扩，将展宽的频谱扩展信号还原成原始信号。因为伪随机序列的速率远大于要传送信息的速率，所以受调信号的频谱宽度将远大于要传送信息的频谱宽度，帮称之为扩频(Direct sequence spread spectrum (DS, Direct Sequence) modulation system, also known as direct sequence or pseudo-noise system (PN system), referred to as direct expansion systems, is currently the more widely used as a spread spectrum system. To send the information encoded by the pseudo-random sequence of carrier modulation. End of winter in the letter to extend the signal with the spreading sequence of spectrum, in the end prepared to receive and use the same sequence spread spectrum despreading friends, broadening the spectrum to restore the original signal expansion signals. Because the rate of pseudo-random sequence is much larger than the rate of information to be sent, so the frequency spectrum by adjusting the width of the spectrum is much larger than the width of the information to be sent to help is called spread spectrum)
- 2011-01-09 16:54:26下载
- 积分：1
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3DBeam_fre
空间梁验证算例
算例1 计算一空间圆杆形悬臂梁，截面尺寸为，直径 厘米，长度 米，弹性模量 质量密度 。 (Spatial beam validation example calculation of a space for example a rod-shaped cantilever beam, cross-sectional size, diameter cm, length m, elastic modulus, mass density.)
- 2010-03-08 12:14:53下载
- 积分：1
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MATLAB虚拟信号发生器
说明： 基于Matlab的仿真,虚拟信号发生器,实现各种信号(sin cos ... )的发生(Matlab based simulation, virtual signal generator based on Matlab simulation, virtual signal generator, achieve various signals (sin...The occurrence of))
- 2019-07-10 15:29:19下载
- 积分：1
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es
说明： evolution strategies
- 2010-10-31 20:36:37下载
- 积分：1
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KGaussian1
说明： 核函数中经常用到的高斯核核函数的matlab程序(Kernel function often used in the Gaussian kernel function matlab nuclear program)
- 2021-03-24 16:59:14下载
- 积分：1
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modulation_o
基本的调制解调程序集，包括BPSK,QPSK,QAM,GMSK等(basic modulation and demodulation process scripts, including BPSK, QPSK, QAM, and GMSK etc.)
- 2007-06-07 11:19:45下载
- 积分：1
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vipcodec
mpeg 1 simulink code model for running on matlab. used for implementation of coding and decoding algorithma to study and understand the same
- 2013-08-28 03:56:25下载
- 积分：1
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IEEE33DGPQ4PI17PV25PQV30
说明： 电力系统配电网重构，IEEE33节点，电力系统潮流计算优化(Distribution Network Reconfiguration of Power System)
- 2020-07-28 19:08:40下载
- 积分：1
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CSoptimization
说明： 基于MATLAB的布谷鸟搜索算法寻找函数最优解程序源码(Cuckoo search algorithm based on MATLAB to find the function of the optimal solution source code)
- 2020-11-20 09:56:07下载
- 积分：1
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chaoliu1
一个计算3节点的电力系统潮流计算程序，请指教(matlab)
- 2010-03-08 13:59:46下载
- 积分：1
