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Analysis beam propagration using Finite Difference Beam Propagation Method (Analysis beam propagration using Finite Difference Beam Propagation Method)

相控阵的matlab代码，利用傅里叶方法进行综合(Phased Array of matlab code, the use of Fourier methods for integrated)

此文件给出了LT喷泉码的软译码算法的matlab实现及其相应的文章.(This document gives the realization of soft decoding algorithm for the LT fountain codes and its corresponding the article.)

实现了基于mean-shift的图像检索，实现了比较两图像的相似度，选择最相近的图片(To achieve mean-shift based image retrieval, to realize the similarity of two images, the selection of the most similar image)

Monte Carlo simulation Matlab code

emd算法程序，希望对大家有所帮助(emd algorithm procedures, we hope to help )

计算夫琅禾费圆孔函数傅里叶变换的脚本M文件(Calculation of the the Fraunhofer hole function Fourier transform script M-file)

说明：  《Matlab与C++》这本书的第5章，包含matlab程序和C++程序(&quot Matlab and C++&quot Chapter 5 of this book, including the matlab program and C++ program)

此源码是关于TS模糊神经网络的matlab源代码，已经运行过。(This source is on TS fuzzy neural network matlab source code, has been run over.)

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.