ofdm_matlab

RBF of high order fundamental solution of 3D Helmholtz operator

说明：  100个MATLAB程序，涉及数值分析、图形处理、界面设计、图形应用，稍加修改，即可套用。(100 MATLAB programs, involving numerical analysis, graphics, interface design, graphics, slightly modified, can be applied.)

基于模糊PID控制迟延系统具有更好的调节时间以及更小的超调量(The delay system based on fuzzy PID control has better adjustment time and smaller overshoot.)

设计一个程序实现基于Minimum Degree算法的稀疏矩阵Reordering算法。(Design a program based on sparse matrix algorithms Minimum Degree Reordering algorithms.)

1、 降噪步骤： （1） 一维信号的小波分解。选择一个小波并确定分解的层次，然后进行分解运算。 （2） 小波分解高频系数的阈值量化。对各个分解尺度下得高频系数选择阈值进行软阈值量化处理。 （3） 一维小波重构。根据小波分解的最底层低频系数和各高频系数进行一维小波重构。 matlab里面有关于去噪的函数，你可以找一下~~ 这说的只是基本原理，希望有所帮助(1, noise reduction steps: (1) one-dimensional signal wavelet decomposition. Select a wavelet decomposition level and determining, and then divide the operation. (2) high coefficient wavelet thresholding. For each decomposition scales have high coefficient selection threshold soft threshold quantization. (3) one-dimensional wavelet reconstruction. According to the lowest level of the low frequency wavelet coefficients and high frequency coefficients of each one-dimensional wavelet reconstruction. There are about denoising matlab function, you can find some ~ ~ This says just the basic principle, we hope to help)

三相并网逆变器，电压环和电流环双环控制，电流环参考值有功率控制，实现PQ控制( 制 Three-phase grid-connected inverter, voltage loop and current loop dual-loop control, current loop power control reference values are realized PQ control)

The discrete cosine transform (DCT) is a technique for converting a signal into elementary frequency components. It is widely used in image compression. Here we develop some simple functions to compute the DCT and to compress images. These functions illustrate the power of Mathematica in the prototyping of image processing algorithms. The

《Neural Network Design》 Martin T. Hagan, Howard B. Demuth, Mark H. Beale 一书中相关matlab演示程序软件包。对于学习很有参考。( Neural Network Design Martin T. Hagan, Howard B. Demuth, Mark H. Beale, a book related to matlab demo program package. Good reference for the study.)

声学物理特性，主被动声纳或基阵的信号处理 (Acoustic physical characteristics, or the array of active and passive sonar signal processing)

因子分析可在许多变量中找出隐藏的具有代表性的因子。将相同本质的变量归入一个因子，可减少变量的数目，还可检验变量间关系的假设。(Factor analysis can be found in many variables hidden with a representative factor. The same nature of the variables included in a factor, can reduce the number of variables, but also to test the relationship between the hypothesis.)