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uplod
programs which include some codings related to mimo and ofdm involving their resource allocation
- 2011-02-06 22:50:25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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轴承信号双谱
说明: 对简单信号进行双谱分析,并输出信号的时频图,双谱图,以及其三维图(Double row analysis of simple signals)
- 2019-11-21 16:36:07下载
- 积分:1
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Rayleigh
说明: 描述了基于瑞利信道下的频谱感知的问题,使用的蒙特卡罗法进行仿真。(Based on Rayleigh Road, described under the issue of spectrum sensing, the use of Monte Carlo simulation.)
- 2011-03-25 09:50:00下载
- 积分:1
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scme
LTE中SCME信道的matlab仿真代码(SCME channel simulation code in LTE)
- 2013-03-25 19:30:35下载
- 积分:1
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SparseLab
SparseLab2.1工具箱的使用说明(SparseLab2.1 toolbox for use)
- 2010-06-17 16:18:35下载
- 积分:1
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swarm_optimization-Solve-the-TSP-problem
一个基于粒子群优化算法源码,(PSO)的50个城市TSP问题的求解,可推广至类似NP.(A source code based on particle swarm optimization, (PSO) of the 50 cities TSP problem solving, can be extended to similar NP.)
- 2010-07-24 20:07:35下载
- 积分:1
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gepp
列主元Gauss消去法,希望对大家有所帮助。(Out the main element Gauss elimination method, we want to help.)
- 2010-12-29 17:12:12下载
- 积分:1
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wimax_a_way_forward_in_india
this book gives some basics og wimax and its parameer and its requirement regarding to the practical uses
- 2013-03-13 15:27:11下载
- 积分:1
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inverted-parabola
inverted parabola is a matlab source code to simulate antenna gain
- 2014-02-13 13:40:16下载
- 积分:1