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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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sdarticle
说明： 一篇有关扩展卡尔曼滤波中噪声协方差取值测量的外文文献(Identification of process and measurement noise covariance for state and parameter estimation using extend kalman filter)
- 2011-04-11 20:50:23下载
- 积分：1
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biaokuai
利用c++编程，该程序实现了不使用标准块输入访问simulink信号(Using c++ programming, the program achieved without the use of standard access simulink block input signal
)
- 2014-12-14 15:30:33下载
- 积分：1
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program-sin
Sinus programming For Matlab
- 2012-11-25 12:16:55下载
- 积分：1
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5678799
免疫算法和粒子群算法结合后用于求解多目标无功优化(
Immune algorithm and particle swarm algorithm is used to solve with more reactive power optimization goal
)
- 2021-04-11 10:48:58下载
- 积分：1
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LU
实现LU分解，选列主元的LU分解和不选主元的LU分解，在残差允许的范围内与MATLAB内置可以达到相同效果(LU decomposition of selected principal components)
- 2020-09-24 15:17:48下载
- 积分：1
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Main
The recursive function H(T)
Calculate the Expected number of failures in (0,T], for Weibull distribution
Assumption: T s unit is a day, the smallest time unit.
- 2010-11-27 12:14:22下载
- 积分：1
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DPLL
模数转换的数字锁相环，代码中有详细的说明(digital phase lock loop)
- 2011-06-05 11:13:34下载
- 积分：1
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qlibrary
Quantum computing library in matlab with several illustration
- 2009-09-22 00:11:39下载
- 积分：1
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EKF
纯方位跟踪：目标为匀速直线运动模型，可以迅速收敛。(Bearing_only tracking)
- 2009-12-15 22:00:12下载
- 积分：1
