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mvsb
matlab编写的VSB残留边带调制代码(matlab prepared VSB VSB modulation code)
- 2008-08-02 23:02:56下载
- 积分:1
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curvelet
curvelet工具箱可对图像进行曲波变换,提取图像边缘,对图像进行去噪,增强等处理。(curvelet toolbox for extracting the edge of image and enhance the noise of image.)
- 2011-04-28 21:54:45下载
- 积分:1
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MATLAB
一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如图4-2(b)所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释,设第n次迭代得到的解与真值之差,即 的误差为 时,则
(4-8)
把 在 附近对 用泰勒级数展开
(4-9)
上式略去 以下的项
(4-10)
的误差可近似由上式计算出来
图4-2
(4-11)
比较式(4-7)和(4-11),可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑,给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分:1
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capacity_rician
multiple input multiple output capacity
- 2011-06-21 23:43:51下载
- 积分:1
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gmres_m
gmres算法的一个特殊形式,用来求解大型稀疏矩阵方程(gmres algorithm a special form used to solve large sparse matrix equation)
- 2005-04-21 01:03:45下载
- 积分:1
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Jakes-channel
描述了无线通信中最常见Jakes信道模型,程序简单,注释详细。(this m program mainly describes the Jakes channel model in wireless communication, which helps you understand the channel details.Please refer to it.)
- 2013-08-19 20:14:52下载
- 积分:1
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final_possion
实现泊松过程的仿真,并给出泊松过程波形和自相关函数波形.(Achieve Poisson process simulation, and gives a Poisson process waveform and autocorrelation function of the waveform.)
- 2013-11-06 16:12:06下载
- 积分:1
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粒子滤波器&Copula
包含粒子滤波器,卡尔曼滤波,Copula函数的应用,适合适合新手学习,共享(Including particle filter, Calman filter, Copula function application, suitable for novice learning, sharing)
- 2017-12-09 09:51:48下载
- 积分:1
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GLCM
说明: 这个程序是用MATLAB编写得一个灰度共生矩阵特征及其一些参数得计算,希望对大家有用。(The MATLAB program is written, a GLCM features and some of the parameters was calculated, and I hope useful.)
- 2011-02-20 11:28:00下载
- 积分:1
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CreateSig
i hav uploaed the signal creating code
- 2012-09-27 19:34:52下载
- 积分:1