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Description: This program take a two sequences with differents lengths and transform in two sequences with same length with use zero padding method.
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Size: 1024 |
Author: Thiago Alencar |
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Description: zero padding in OFDM
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Size: 5120 |
Author: ojokojo |
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Description: Matlab function that removes Fourier-domain zero-padding from data
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Size: 1024 |
Author: thmman |
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Description: We propose a new vector formulation of STFT.
We derive a family of inverse STFT estimators and a least
squares one. We discuss their relationship and compare their
performance with respect to both additive and multiplicative
modifications to STFT. The influence of window, overlap, and
zero-padding are investigated as well.
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Size: 93184 |
Author: wan xinru |
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Description: A FFT-based partial matched filter (PMF)
acquisition threshold setting method for fast GPS acquisition is
presented. Normal distribution and numerical fitting technique
instead of real decision variable (DV) distribution are used in
derivation to approximate the threshold expression, and the
modification method for the threshold expression is also
presented. The threshold expression is based on the individual
FFT Doppler bin false alarm probability rather than the
convention whole detector false alarm probability. The
proposed threshold expression can be adjusted according to
the false alarm probability, the noncoherent accumulation
(NCA) length and the estimated noise variance. Furthermore
we discuss the implementation of zero-padding FFT with its
advantage and limitation. The performance is superior
compared to the reference method in terms of signal-to-noise
ratio (SNR) when detection and false alarm probabilities are
used as measurement criteria.
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Size: 280576 |
Author: zohreh |
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Description: DES算法将明文分成64位大小的众多数据块，即分组长度为64位，同时用56位密钥对64位明文信息加密，最终形成64位的密文。如果明文长度不足64位，则将其扩展为64位（如补零等方法）。-DES algorithm is divided into 64-bit plaintext data block size, number of that packet length is 64, while using 56-bit key for 64-bit plaintext message encryption and eventually the formation of 64-bit ciphertext. If the plaintext length less than 64, then it is extended to 64-bit (for example, zero-padding and other methods).
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Size: 13615104 |
Author: 肖胜鹏 |
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Description: Demo of zero-padding DFTs for 4F7 course (lecture 2):
Spectrum of a single complex exponential added together
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Size: 1024 |
Author: none |
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Description: NDNANFILTER N维零相位数字滤波器，忽略NaN的。
短语法：
[年，钨] = ndnanfilter（十，HWIN，女）
短输入：
X - 有/无NaN的多维数据。
HWIN - 窗口的名称（默认情况下移动平均的Nd： rectwin ）。
的F - 向量指定为每个维窗口半宽度。
短暂输出：
Ÿ - 过滤/平滑X数据与零相移（如X!一样大小）。
W - N维是通过一种特殊的子函数生成的中心对称的窗口称为NDWIND。
简短描述：
此功能适用于一对X与W N维卷积，利用MATLAB的IMFILTER或CONVN功能，忽视/插值/灌装NaN的。
默认情况下，边缘与在与PADARRAY MATLAB的函数的边界的X值填充。当PADARRAY没有找到，该程序执行零填充。
简短说明：
*见截图。-NDNANFILTER N-dimensional zero-phase digital filter, ignoring NaNs.
SHORT SYNTAX:
[Y,W] = ndnanfilter(X,HWIN,F)
SHORT INPUT:
X- Multidimensional data with/without NaNs.
HWIN- Window s name (N-D moving average by default: rectwin ).
F- Vector specifying the semi-width of the window for each dimension.
SHORT OUTPUT:
Y- Filtered/smoothed X data (same size as X!) with zero phase shift.
W- N-dimensional window with central symmetry generated by a special subfunction called NDWIND.
SHORT DESCRIPTION:
This function applies a N-dimensional convolution of X with W, using the MATLAB s IMFILTER or CONVN function, ignoring/interpolating/filling NaNs.
By default, the edges are padded with the values of X at the borders with the PADARRAY MATLAB s function. When PADARRAY is not found, the program performs zero-padding.
SHORT NOTE:
* See the screenshot.
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Size: 6144 |
Author: namind |
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Description: this file is about finding Fast fourier transform for given sine wave using FFT statement.
i. with zero padding
II. without zero padding
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Size: 1024 |
Author: mohanrajan |
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Description: This script shows the difference of using zero padding (GI) in the end of OFDM symbol and using cyclic prefix (CP).
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Size: 2048 |
Author: sh3e |
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Description: 图像线性插值，包括nearest neighbor(pixel duplication)，bilinear，bicubic，lanczos，B-spline， cubic，Fourier zero-padding (sinc)-Image linear interpolation, including nearest neighbor (pixel duplication), bilinear, bicubic, lanczos, B-spline, cubic, Fourier zero-padding (sinc)
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Size: 76800 |
Author: richard |
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Description: Its a research paper from ieee In this letter, analytical expressions are derived for
the power spectral density (PSD) of orthogonal frequency division
multiplex (OFDM) signals employing a cyclic prefix (CP-OFDM)
or zero padding (ZP-OFDM) time guard interval. Under the relatively
weak assumptions that i) the data are independent and identically
distributed on all OFDM subcarriers and ii) the OFDM
pulse shape is sufficiently localized in time, simple closed-form PSD
expressions can be obtained. These expressions are then compared
to existing OFDM PSD expressions and validated by inspecting the
power spectra of some standardized OFDM signals.
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Size: 267264 |
Author: payal |
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Description: 这本书提供了充分的代表性逆合成孔径雷达（ISAR）成像，这是一种流行和重要的雷达信号处理工具。本书涵盖了所有可能的ISAR成像方面。这本书提供了一个介绍了专家组的逆问题和合成孔径雷达（SAR）提出的问题之前，信号处理技术和雷达基本相当。如高分辨率SAR的重要概念，脉冲压缩和图像形成连同相关的MATLAB代码。 ISAR成像的基本原理后，这本书提供了相关的MATLAB函数和代码成像ISAR成像的详细程序。 ISAR成像，多个成像技巧和微调，如零填充和窗口程序，以提高图像的质量也被提出。最后，逆合成孔径雷达图像中的各种实际应用，如成像天线平台散射的，是在单独的一章。所有这些算法，MATLAB代码和数字都包括在内。最后一章考虑了在ISAR成像的先进理念和发展趋势。-This book provides a full representation of Inverse Synthetic Aperture Radar (ISAR) imagery, which is a popular and important radar signal processing tool. The book covers all possible aspects of ISAR imaging. The book offers a fair amount of signal processing techniques and radar basics before introducing the inverse problem of ISAR and the forward problem of Synthetic Aperture Radar (SAR). Important concepts of SAR such as resolution, pulse compression and image formation are given together with associated MATLAB codes. After providing the fundamentals for ISAR imaging, the book gives the detailed imaging procedures for ISAR imaging with associated MATLAB functions and codes. To enhance the image quality in ISAR imaging, several imaging tricks and fine-tuning procedures such as zero-padding and windowing are also presented. Finally, various real applications of ISAR imagery, like imaging the antenna-platform scattering, are given in a separate chapter. For all these algorithms, MATLA
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Size: 9176064 |
Author: Hwang |
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Description: 研究在频域补零对时域的影响，研究其性质，对实际应用很有帮助-Zero padding of the study in the frequency domain of the influence on the time domain, to study the nature, the actual application helpful
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Size: 47104 |
Author: 燕姐 |
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Description: 数字信号处理中的离散傅里叶变换用快速傅里叶变换算法实现（为按时间抽取FFT算法实现的程序；考虑到补零情况，进行信号频谱分析过程中可能出现的问题，例如混淆、泄漏、栅栏效应等）-Program of digital signal processing in the discrete Fourier transform using a fast Fourier transform algorithm (as achieved by the decimation-in-time FFT algorithm Taking into account the zero-padding, and the problems that may occur in the signal spectrum analysis process, such as confusion, leak fence effect)
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Size: 1024 |
Author: 郭涯 |
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Description: A Matlab code to simulate an OFDM with zero padding
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Size: 1024 |
Author: Montadar Abas Taher |
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Description: Blind Identification of MIMO Channels for Zero Padding Block Transmission rrSystems
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Size: 10240 |
Author: Moideen |
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Description: Matlab program that shows Dominant Frequency detection using FFT method
Use FT with zero-padding technique 10 times of FT resolution
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Size: 2048 |
Author: Vessika |
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Description: Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a
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Size: 3072 |
Author: MUHAMMAD SHAKIL |
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Description: 关于DCT的zero padding变换-it s mainly about DCT zero padding
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Size: 6649856 |
Author: 李行 |
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