FFT_practise_and_analysis

这个程序对快速实现模糊逻辑控制很有用。假设这个逻辑控制有两个输入和一个输出，用各种选择来实现它。(This procedure is the rapid realization of the usefulness of fuzzy logic control. Assuming that there are two logic control inputs and one output, with various options to achieve it.)

Vector quantization using LBG method of center splitting

This code uses the output from make_zeta.c file i.e. it uses the displacement of any particular isotherm and outputs the time series of the displacement to zetafile??degC.dat file. Furthermore, this code filters the isotherm displacements, plots the filtered and raw signals at certain specified locations and then creates maps of the isotherm displacement time series

为了创造一个和谐的，有序的电磁环境，需要对无线电干扰有正确的了解，利用MATLAB软件对通信过程中可能出现的无线电干扰进行了仿真(In order to create a harmonious and orderly electromagnetic environment, the need for a proper understanding of radio interference, using MATLAB software, communications may occur during a simulation of radio interference)

这是关于偶极子天线的仿真程序。模型搭建合理，仿真结果包括电场、磁场、电压电流的分布图，还包括偶极子天线的磁场三维视图。(This is a simulation program on the dipole antenna. To build a reasonable model, the simulation results, including the electric and magnetic fields, voltage and current distribution maps, also includes a magnetic field three-dimensional view of the dipole antenna. )

这里主要对LMS算法及一些改进的LMS算法（NLMS算法、变步长LMS算法、变换域LMS算法）之间的不同点进行了比较，在传统的LMS算法的基础上发展了LMS算法的应用。(here on the main LMS algorithm and some improvements to the LMS algorithm (NLMS. modified LMS algorithm, transform domain LMS algorithm) between the different points of comparison, in the traditional LMS algorithm developed on the basis of the LMS algorithm application.)

Detect using the time-domain Autocorrelation algorithm.

Tranformasi wavelet merupakan perbaikan dari transformasi Fourier. Transformasi Fourier hanya dapat menangkap informasi apakahsuatu sinyal memiliki frekuensi tertentu ataukah tidak, tapi tidak dapat menangkap dimana frekuensi itu terjadi. Jika Transformasi Fourier hanya memberikan informasi tentang frekuensisuatu sinyal, maka transformasi wavelet memberikan informasi tentang kombinasi skala dan frekuensi

Here is the OFDM based simulink model in MATLAB. compare the estimation technique and show the graphical results

实现高通和低通滤波，主要是先进行傅里叶变换，然后对频谱图滤波后再逆变换得到滤波之后的图片(High-pass and low pass filter, mainly the first Fourier transform, frequency spectrum and then inverse transform filter and filtered image)