Description: 迭代自适应Simpson，Lobatto积分
In almost every standard book on numerics quadrature algorithms like the adaptive Simpson or the adaptive Lobatto algorithm are presented in a recursive way. The benefit of the recursive programming is the compact and clear representation. However, recursive quadrature algorithms might be transformed into iterative quadrature algorithms without major modifications in the structure of the algorithm.
We present iterative adaptive quadrature algorithm (adaptiveSimpson and adaptiveLobatto), which preserves the compactness and the clarity of the recursive algorithms (e.g. quad, quadv, and quadl). Our iterative algorithm provides a parallel calculation of the integration function, which leads to tremendous gain in run-time, in general. Our results suggest a general iterative and not a recursive implementation of adaptive quadrature formulas, once the programming language permits parallel access to the integration function. For details the attached PDF file Conrad_08.pdf. Platform: |
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Author:zzn |
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Description: 迭代自适应Simpson，Lobatto积分
In almost every standard book on numerics quadrature algorithms like the adaptive Simpson or the adaptive Lobatto algorithm are presented in a recursive way. The benefit of the recursive programming is the compact and clear representation. However, recursive quadrature algorithms might be transformed into iterative quadrature algorithms without major modifications in the structure of the algorithm.
We present iterative adaptive quadrature algorithm (adaptiveSimpson and adaptiveLobatto), which preserves the compactness and the clarity of the recursive algorithms (e.g. quad, quadv, and quadl). Our iterative algorithm provides a parallel calculation of the integration function, which leads to tremendous gain in run-time, in general. Our results suggest a general iterative and not a recursive implementation of adaptive quadrature formulas, once the programming language permits parallel access to the integration function. For details the attached PDF file Conrad_08.pdf. -Iterative Adaptive Simpson, Lobatto Points In almost every standard book on numerics quadrature algorithms like the adaptive Simpson or the adaptive Lobatto algorithm are presented in a recursive way. The benefit of the recursive programming is the compact and clear representation. However, recursive quadrature algorithms might be transformed into iterative quadrature algorithms without major modifications in the structure of the algorithm.We present iterative adaptive quadrature algorithm (adaptiveSimpson and adaptiveLobatto), which preserves the compactness and the clarity of the recursive algorithms (eg quad, quadv, and quadl) . Our iterative algorithm provides a parallel calculation of the integration function, which leads to tremendous gain in run-time, in general. Our results suggest a general iterative and not a recursive implementation of adaptive quadrature formulas, once the programming language permits parallel access to the integration function. For details the attached PDF file Conrad_08.pdf. Platform: |
Size: 231424 |
Author:zzn |
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Description: 自适应梯形求积法 特别适合被积函数为强峰的定积分 此程序修改余地很大-Adaptive trapezoid quadrature method was particularly suited to the plot function for the strong peaks of the definite integral of a large room for this procedure to amend Platform: |
Size: 1024 |
Author:冯海霞 |
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Description: Inter-symbol interference if not taken care off may
cause severe error at the receiver and the detection of signal becomes
difficult. An adaptive equalizer employing Recursive Least Squares
algorithm can be a good compensation for the ISI problem. In this
paper performance of communication link in presence of Least Mean
Square and Recursive Least Squares equalizer algorithm is analyzed.
A Model of communication system having Quadrature amplitude
modulation and Rician fading channel is implemented using
MATLAB communication block set. Bit error rate and number of
errors is evaluated for RLS and LMS equalizer algorithm, due to
change in Signal to Noise Ratio (SNR) and fading component gain in
Rician fading Channel. Platform: |
Size: 400384 |
Author:pravin jadhav |
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Description: the OFDM PHY is adaptive therefore it supports
multiple schemes BPSK, QPSK, 16-QAM and 64-QAM for
data carriers’ modulation. The constellation diagrams are
gray mapped and shows the magnitudes I and Q (In-phase
and Quadrature) components of each incoming bit(s)
combination along with their normalization factor C to
calculate magnitude of each model Platform: |
Size: 1497088 |
Author:san |
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Description: This contribution considers semi-blind adaptive equalization for communication systems that employ high-throughput quadrature
amplitude modulation signalling. A minimum number of training symbols, approximately equal to the dimension
of the equalizer, are first utilized to provide a rough initial least-squares estimate of the equalizer’s weight vector. A
novel gradient-Newton concurrent constant modulus algorithm and soft decision-directed scheme are then applied to adapt
the equalizer. The proposed semi-blind adaptive algorithm is capable of converging fast and accurately to the optimal
minimum mean-square error equalization solution. Simulation results obtained demonstrate that the convergence speed of this
semi-blind adaptive algorithm is close to that of the training-based recursive least-square algorithm Platform: |
Size: 185344 |
Author:yh |
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Description: 求解数值积分的程序，主要功能是求解一定区间函数的数值积分值。功能强大，应用方便。欢迎指导。谢谢！-QUAD Numerically evaluate integral, adaptive Lobatto quadrature.function FUN from A to B to within an error of 1.e-6 using high order
recursive adaptive quadrature. FUN is a function handle. The function
Y=FUN(X) should accept a vector argument X and return a vector result
Y, the integrand evaluated at each element of X.
Platform: |
Size: 4096 |
Author:李兴华 |
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Description: Heston Model option pricings and comparison-Compares the option prices obtained using the analytical Heston formula (1993) and the FFT method (Carr-Madan formula via FFT+ Simpson s, Carr-Madan using adaptive Gauss-Kronrod quadrature, and Lipton s formula using adaptive Gauss-Kronrod quadrature). Platform: |
Size: 8192 |
Author:陈彦 |
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Description: 该代码展示了如何通过数值方法估计某个量值的思路，方法具有新颖之处。。。望采纳-QUADGUI Demonstrate numerical evaluation of a definite integral.
Q = QUADGUI(F,A,B) shows the steps in approximating the integral
of F(x) from A to B by adaptive extrapolated Simpson s quadrature.
The shaded area shows the integral over the current subinterval.
The color switches to green when the desired accuracy is obtained. Platform: |
Size: 2048 |
Author:lipu |
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Description: Quadrature ampliltude modulation has high spectral efficiency but is highly sensitive to power amplifier
nonlinearities. It is shown that an adaptive predistorter usig polynomial amplitude and phase
predistortion functions can be used to linearize the power amplifier. Tie recursive least square algonrthm
is employed in an estimator which uses demodulated signals to estimate the required predistortion.
Computer simulation results are provided and these results show that fast convergence and high spectm
improvement can be obtained using the proposed linearization method. The results are significantly
better than those reported before for other linearization techniques. Platform: |
Size: 2683904 |
Author:sali |
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Description: 自适应梯形求积法，开发环境用的是类似VC++的Codeblocks-Adaptive trapezoidal quadrature method, the development environment is similar to VC++ Codeblocks Platform: |
Size: 46080 |
Author:田换 |
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Description: 自适应求积法小程序，请自己测试过可以用。(Adaptive quadrature method small program, please test yourself, you can use.) Platform: |
Size: 3072 |
Author:往来格
|
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