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null_beamform_cf
- MATLAB function that performers delay and sum beamforming on two input signals in the frequency domain.
LTE_ch_Estimation
- LTE的下行信道估计mse的测试，采用了LTE的下行频域结构，LS信道估计，线性插值算法。-LTE downlink channel estimation mse of testing, using LTE downlink frequency domain structure, LS channel estimation, linear interpolation algorithm.
Assignment_3
- * Frequency domain filtering -1. Discrete Fourier Transform Write a C++ function for each of following: (a) Multiply the input image by (-1)x+y to center the transform for filtering. (b) Compute the two-dimensional discrete F
FrequencyDomainAnalysisOfTheSystem
- 信号频谱分析 1. 观测已知方波信号、正弦波信号的频谱 分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。 观测实时模拟信号（语音）的频谱 用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图-Signal spectrum analysis 1.
matlab6.5yuanchengxu
- matlab6.5 图形图像处理的源程序 包括空域频域滤波等图像增强和很多图像变换的程序-matlab6.5 source graphic image processing, including spatial filtering, frequency domain image enhancement and a lot of image transform process
DIPsystem
- 各种的图像处理函数，图像的灰度变换，图像的正交变换，空域滤波，频域滤波，以及特效滤波，直接可用无需修改。-Variety of image processing functions, image gray level transformation, image orthogonal transform, spatial filtering, frequency domain filtering, and special effects filters, can be used directly
tuxiangchuli
- 两个简单程序，一个是在空域和频域分别实现了两个矩阵的卷积。另一个程序主要是为了查看几个模板的空域及频域响应形式，方便理解-Two simple procedures, one is in the spatial and frequency domain is realized for the convolution of two matrices. Another program is mainly to see the airspace of several templates and fre
frequency
- 内包含频域滤波的步骤及MATLAB代码，是频域增强中所必须知道的哦，还有一个用巴特沃思滤波器效果的例子。-Contains the frequency domain filtering steps and MATLAB code, is enhanced in the frequency domain needs to know Oh, and a Butterworth filter with the effect of example.
pilotbasedchannelestimatininOFDMsystems
- 频域不同导频密度的信道估计在被研究，并且在高低时延信道其信道估计被固定了导频分配时域。频域信道估计是基于插补，多项式的广义线性模型（或最小二乘法）和维纳滤波（或线性最小均方误差法）的方法。时域的信道估计是用线性插补完成的。我们通过测量在基于克拉克散射模型的瑞利衰落信道上并带有QPSK调制的粗误码率，已经比较了所有这些方案的结果。-Different pilot density in frequency domain channel estimate to research, and its hi
gabor_image_paper
- Example of a two-dimensional Gabor filterIn image processing, a Gabor filter, named after Dennis Gabor, is a linear filter used for edge detection. Frequency and orientation representations of Gabor filter are similar to those of human visual system,
getPDF2
- In this paper, we investigate the timing and carrier frequency offset (CFO) synchronization problem in decode and forward cooperative systems operating over frequency selective channels. A training sequence which consists of one orthogonal fr
ImageProcessing
- 1 绪论 2 数字图像基础 3 空间域图像增强 4 频率域图像增强 5 图像复原 6 彩色图像处理 7 小波变换和多分辨率处理 8 图像压缩 9 形态学图像处理 10 图像分割 11 表示与描述 12 对象识别-1 Introduction 3 2 digital image based on spatial frequency domain image enhancement image enhancement 4 5 6 Color image p
filterbank_for_speech_signal
- A speech signal filterbank, using melscale frequency and framebanking.- 1. For speech signal can be represented as a discrete sequence of frames (or feature vectors) that can be used as the input to a speech recogniser. Important ideas and technique
adaptive_beam
- adaptive beamformer using an FFT filter bank with/without DOA estimation and tracking (frequency domain version of Frost beamformer)
3.5GHz--channel-measurements
- 在3.49-3.51GHZ频段内的典型中国城市环境下，地面信号衰落仍服从经典的指数对数分布。在中度误差（σx =10.291）下，路损指数在3.1-3.7之间。半径2公里的小区内，RMS时延在3-4微秒之间；典型的办公室环境中，存在直达径时RMS时延小于0.1微秒。在城市环境中，多径现象很明显，主要由高层建筑物引起，并以簇的方式存在。在城市中低速移动条件下（接收机移动速度小于100 Km/h）某一强径的生存时间通常超过10分钟，但相对到达时间会发生滑动。单一小区内的传播环境具有一定相关性，如果存
matlab-4
- 图像融合的目的把来自多传感器的数据互补信息合并成一幅新的图像,以改善图像的质量。图像融合最简单的理解就是两个（或多个）图像间的相加运算。这一技术广泛应用于多频谱图像理解和医学图像处理等领域。主要分为空域和频域相加。-The purpose of image fusion from multiple sensor data to complement the information merged into a new image to improve image quality. The simp
T-F-analysis-toolbox
- 信号处理领域中时频分析工具箱，可以处理常见的食欲频域以及时频域信号分析。-Signal processing toolbox in the time-frequency analysis, loss of appetite can handle the common frequency domain and time-frequency domain signal analysis.
The-frequency--processing
- 对信号的频域处理和结果的现实，有了它，你只需要选择信号对象就可以对其处理和结果分析，也便于对频域的理解-The frequency domain signal processing and the results of the reality, with it, you only need to select the signal objects can be processed and the results of its analysis, but also facilitate the u
A-DCT-watermarking-algorithm
- 提出了一种在数字图像上实现的盲水印算法, 嵌入的水印是64 64 8 bit 灰度图。该算 法用宿主图像的8 8 分块的DCT 域低频对应系数, 进行量化取余的方法嵌入水印。-Proposes a new digital image watermarking algorithm implemented on the embedded watermark is 64 64 8 bit gra
Noise-estimation-in-wavelet-domain
- 对含噪声的图像进行识别和估计，通过小波分解，在频域中完成对图像的识别，判断是椒盐噪声还是高斯噪声，并对参数的值进行估计。-Identify and estimate noisy images, through the wavelet decomposition in the frequency domain to complete the image recognition to determine the salt and pepper noise or Gaussian noise, and