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energydetection
- 认知无线电能量感知方法的详细介绍,在文章中仔细介绍了能量检测的方法-energy detection in congitive radio
a_modified_method
- 介绍了改进谱减法的原理及算法。提出在信噪比(sNR)较低的情况下,根据语音短时能量和过零率,判断在无声 或有声期间是否偶然的噪声过高,从而设定合适的参数降低噪声。-Introduced an improved spectral subtraction principles and algorithms. Proposed signal to noise ratio (sNR) lower case, according to voice short-term energy and zero-cr
EnergyDetectionAlgorithmInvestigationBasedonCooper
- :该文首先研究了单认知用户能量检测算法的检测性能和检测灵敏度与检测时长和噪声短时间内平均功率波 动性之间的关系,得出检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降的结论,在低信噪 比时尤为明显;针对检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降,提出了基于多用户 协同能量检测算法。-In this paper,detection performance and detection sensitivity with detection duratio
wavelet
- 实现小波包能量分解(6层分解),且易于参考从而编写出小波能量分解。-Implementation of wavelet packet energy decomposition (decomposition of 6-layer), and easy-to-reference to the preparation of a wavelet decomposition of energy.
20100321image_fusion
- 利用区域能量方法的matlab图像处理程序直接可用-Use of regional energy method matlab image processing program can be used directly
WaveletPacketAnalysis
- 简单的小波包分解和重构单路信号,包括求小波的能量熵-Wavelet Packet Analysis
im2geiWithNum
- 通过输入图像序列的起始帧号得到图像的步态能量图-Start by entering the frame number of the gait energy image by image
sift
- sift 特征点提取代码,在最大能量轴上做了投影。-sift feature extraction code, the maximum energy to do the projection axis.
Untitledw
- 利用Matlab实现子功率谱的求解,并实现信号处理和能量算法-Matlab, the solution to achieve sub-power spectrum, and algorithms for signal processing and energy
waveletpacketsZHH
- wave:小波包分解,对信号进行小波包分解,将信号按频率成分分解出来,并且估计小波包能量-wave: wavelet packet decomposition, wavelet packet decomposition of the signal, the signal decomposition by frequency components out, and the estimated wavelet packet energy
matlab
- 认知无线电中频谱检测技术周期性检测和能量检测-congnitibe radio spectrum sensing
CRSystemInMatlab
- CR的常用物理层检测算法包括:匹配滤波检测、能量检测和循环平稳特征检测。-CR Common physical layer detection algorithm include: matched filter detection, energy detection and cyclostationary feature detection.
EnergyDetectionAlgorithmInvestigatioonCooperative.
- 简要介绍了认知无线电中基于能量检测的频谱感知方法,在分析能量检测法原理和性能基础上,研究了噪声的不确定性对检测性能的影响. 仿真表明,能量检测法是一种简单、有效的频谱感知方法.-A brief introduction of cognitive radio spectrum sensing based on energy detection method, the analysis and performance of energy detection principle, based on t
AGC
- 在实际系统中,由于发端功率和信道增益的变化会引起接收到的信号幅度的变化,这种变化是设计者所不希望的,因此,有必要对信号幅度进行自动增益控制(AGC)。另外,在解调器内部所有同步完成之后,如果解调输出为软输出,则需要对输出信号进行定标,以使较少的位数能够全面地反映解调数据的信息,这被称为定标AGC。AGC的实现原理大同小异,一般都是将信号幅度(能量)与固定门限比较,高于或低于门限的信息被送到调整环路滤波器,滤波器的输出用于控制可控增益放大器,或者是数字增益调整。-AGC
HHT
- HHT(hilbert Huang-transfrom)可以实现同时对信号的时频分析,得到信号的Hilbert时频谱和能量谱,-HHT (hilbert Huang-transfrom) can achieve the same time, the time-frequency analysis, when the signal spectrum and Hilbert energy spectrum
CBIR
- 一个基于Gabor滤波器组的多特征融合的图像检索算法(CBIR based on Multi-Features Combining Multi-parameters from Gabor Filter-bank, 简称multi法),融合了基于Gabor 小波系数的标准方差,峰态,能量,平滑度和一致性度量五个特征量度,实验表明,该算法是一种更加有效的图像检索方法。-we propose a CBIR algorithm based on Multi-Features Combining Mult
contourlettransform
- 基于边缘和局部能量的NSCT变换遥感图像融合-Adaptive multi-spectral and panchromatic images fusion algorithm based on unsubsampled contourlet transform
quyufangcha
- 通过3*3矩阵移动计算图像区域方差反应图像能量 以此比较图像的清晰与否 实现图像融合-3* 3 matrix through mobile computing image image energy in this region compared variance response and clear images for image fusion or
CR_ED_detect
- 最大化频谱接入机会的能量检测方法的研究-----认知无线电-Access to opportunities to maximize the energy spectrum detection of cognitive radio-----
area
- matlab-car区域方差,能量等,遥感影像处理小波变换-matlab-car regional variance, energy, etc., remote sensing image processing wavelet transforms