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nufft

于 2020-11-22 发布文件大小:52KB

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下载积分: 1 下载次数: 7

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代码说明：

非均匀傅里叶变换 mex name.c加载C文件(nonuniform fourier transfrom)

文件列表：

NUFFT_code
..........\fgg_1D_experiment.asv,2855,2016-01-26
..........\fgg_1D_experiment.m,2880,2016-01-26
..........\FGG_1d_type1.m,9561,2009-10-13
..........\fgg_2D_experiment.m,2575,2009-10-13
..........\FGG_2d_type1.m,10674,2009-10-13
..........\fgg_3D_experiment.m,2679,2009-10-13
..........\FGG_3d_type1.m,12269,2009-10-13
..........\FGG_Convolution1D.c,6805,2009-10-13
..........\FGG_Convolution1D.mexw32,7168,2016-01-26
..........\FGG_Convolution1D_type2.c,6680,2009-10-13
..........\FGG_Convolution1D_type2.mexw32,7168,2016-01-26
..........\FGG_Convolution2D.c,8175,2009-10-13
..........\FGG_Convolution2D_type2.c,8283,2009-10-13
..........\FGG_Convolution3D.c,9763,2009-10-13
..........\FGG_Convolution3D_type2.c,9819,2009-10-13
..........\iFGG_1d_type2.m,6538,2009-10-13
..........\iFGG_2d_type2.m,8322,2009-10-13
..........\iFGG_3d_type2.m,7974,2009-10-13

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LDPC2
。并行级联LDPC码是由多个码率不同的子码，经并行级联后得到的码率可变的LDPC码。本文提出了基于并行级联LDPC码的递增冗余HARQ方案，给出了这种方案的吞吐量性能封闭解。在AwGN信道和Rayleigh衰落信道下，通过仿真将新方案的性能和随机LDPC码的性能进行了比较。结果显示，并行级联LDPC码的递增冗余HARQ 方案性能接近随机LDPc码，但编、译码更简单，参数选择范围更广。(. Parallel Concatenated LDPC code is different by a plurality of bit-rate sub-code, the LDPC code rate is variable obtained after parallel concatenation. In this paper, the incremental redundancy HARQ scheme based on parallel concatenated LDPC codes, the throughput performance of this program is given closed-form solution. In AwGN channel and Rayleigh fading channels through simulation, the performance of the performance of the new program and random LDPC codes are compared. The results show that the parallel concatenated LDPC codes incremental redundancy HARQ scheme performance close to the random LDPc code, but compiled more simple decoding a wider range of parameter selection.)

2013-04-10 21:16:57下载

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2013-03-15 19:42:53下载

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dispatch
Finally, probability analysis, based on the chosen database, is performed and judgment whether the person is recognized is pronounced. Two different modeling techniques can be suggested for purposes of person identification or verification. The approach based on Hidden Markov Speaker Models (HMMs) with the mixtures of Gaussian distribution is text-dependent one. For this technology a speaker is described by a set of HMMs, constructing the set of speech groups spoken by that person. The speech groups may be phonemes or words [7]. The text-independent technology is rested upon Gaussian Mixture Speaker Models. For this technology each speaker is defined by only one model describing all utterances of that person. Identification in the range of both approaches is executed by evaluation of maximum a posteriori probability [7].

2013-12-14 14:24:24下载

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Code for the book "DSP for MATLAB and LabView III: Digital Filter Design".

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实现解混光谱与光谱库里对应光谱的比对，可以找到光谱库里与其最相近的光谱，可以进行直观的评价(Spectroscopy and Spectral unmixing achieve Curry corresponding spectra comparison, you can find their closest spectral library spectra can be visually evaluated)

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说明：图像压缩去噪增强锐化程序，供大家参考。包括：数字图像矩阵数据的显示及其傅立叶变换二维离散余弦变换的图像压缩采用灰度变换的方法增强图像的对比度采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波图像的自适应魏纳滤波运用5种不同的梯度增强法进行图像锐化图像的高通滤波和掩模处理利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-(Sharpen Image Compression Denoising enhanced procedures for your reference. Include: digital image data display matrix and its Fourier transform two-dimensional discrete cosine transform image compression method using gray-scale transformation of the contrast-enhanced images using two-dimensional median filter function by medfilt2 of salt and pepper noise image filtering using MATLAB The function affected by noise interference filter2 images mean filter Adaptive Image Filtering Wehner use five kinds of different gradient method to enhance image sharpening images of high-pass filtering and mask treatment using Butterworth (Butterworth) low pass filter noise by smoothing the images deal with the use of Butterworth (Butterworth) high-pass filter for sharpening images treatment)

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