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A Survey of Spectrum Sensing Algorithms
- A Survey of Spectrum Sensing Algorithms The spectrum sensing problem has gained new aspects with cognitive radio and opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey
compressive-sensing-for-CR
- 多天线压缩宽带频谱感知在认知无线电，多级加权小波包分解在宽带频谱感知用在认知无线电上。-Compression of broadband multi-antenna spectrum sensing in cognitive radio, multi-level weighted wavelet packet used in the broadband spectrum sensing in cognitive radio on.
AerialImageClassificationMethodBasedonFractalTheor
- 提出一种基于分形理论和BP 神经网络的航空遥感图像有监督分类方法。该方法尝试将航空图像 的光谱信息和纹理特征相结合。它首先将彩色航空图像由RGB 格式转化为HSI 格式,然后,根据亮度计算分 数维、多重分形广义维数谱q-D( q) 和“空隙”等基于分形的纹理特征,同时加入归一化的色度和饱和度作为光 谱特征,采用BP 神经网络作为分类器。通过对彩色航空图像的分类实验,结果证实该方法行之有效。-Based on fractal theory and BP neural network
cbxtfa
- 抄电 力 线 载 波 扩 频 通 信 技 术 —— 多表抄控管理解决方案 表系统方案-Copy spread spectrum power line carrier communication technology- copy-controlled multi-table management solutions Table System
ofdm
- 正交频分复用（OFDM，Orthogonal Frequency Division Multiplexing）是一种多载波数字调制技术，也可以被当作一种复用技术。具有频谱利用率高、抗多径干扰等特点，OFDM系统能够有效地抵抗无线信道带来的影响，例如信道的频率选择性衰落，脉冲噪声和共信道干扰的影响。本文主要介绍了OFDM原理的相关知识。-The Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Divisi
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- Spectrum Sensing in Cognitive Radio-Optimal Multiband Joint Detection for Spectrum Sensing in Cognitive Radio Networks
SpectrumSensing
- Abstract：Spectrum Sensing is one of the key technologies in cognitive radio．This article summarize$ the latest development in the field．ana— lyzes the performance of detection algorithm for physical layer and its detection policies，examining
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- 扩频数字接收机中的多相匹配滤波器，是一个PDF得资料-Spread-spectrum digital receiver in the multi-phase matched filter
mypaper4
- To fully utilize the character of the bioradar echo signal, autocorrelation analysis, spectral estimation methods and time-frequency analysis are presented in this paper. These methods are employed to deal with no one, single people and multi-people
chaotic
- 多用户混沌扩频通信的资料，对于做混沌通信的人非常有用 -Chaotic spread spectrum multi-user data, for the people who make very useful chaotic communication
John.Wiley.and.Sons.Multi.Carrier.and.Spread.Spec
- EBOOK : John.Wiley.and.Sons.Multi.Carrier.and.Spread.Spectrum.Systems
Efficient-LSP-quantization-algorithm
- 为在极低速率下实现高质量的语音编码,提出了一 种新的有效的线谱对( LSP)参数量化算法——P-RS- MSM Q 算法。此算法以多帧联合矩阵量化作为基本框架,引入了基 于超级帧模式的均值去除和帧间预测策略、 矩阵分裂和子矩 阵多级量化策略 同时提出了基于语音帧短时谱能量的帧 内加权和基于超级帧中各子帧重要性的帧间加权策略等。-Very low rates in high-quality speech coding, a new and effective LSP (LSP)
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- 摘要：频谱检测技术是认知无线电中极其重要的环节。而协作式的频谱检测由于其良 好的检测性能日益受到人们的关注。基于能量检测，协作频谱检测的算法主要有：与 (AND)算法、或(OR)算法、计数算法、分区算法、似然比算法、线性加权算法和分布式 无线通信系统(DWCS)算法。分析表明，这些协作检测算法能够改善系统的检测性能、 减低干扰冲突、提高频谱利用率。-Knot current spectrum within the detection area, the main sorting
John.Wiley.and.Sons.Multi.Carrier.and.Spread.Spec
- A great book about multi carrier and spread spectrum systems
WignerVille2014
- 本文将小波图像分解和信息熵特征提取相结合，提出一种新的掌纹特征提取算法。该算法首先对掌纹灰度图像进行二维小波分解，再利用多分辨信息熵分别计算不同尺度下的能谱熵作为特征向量，从而实现掌纹特征提取。该算法不但避免了图像增强和纹理细化等预处理过程，而且运用多分辨信息熵的自适应计算方法来调节分解级数，使得到的特征向量长度远小于传统算法。-In this paper, wavelet image decomposition and information entropy feature extractio
Marx20110509
- 本文将小波图像分解和信息熵特征提取相结合，提出一种新的掌纹特征提取算法。该算法首先对掌纹灰度图像进行二维小波分解，再利用多分辨信息熵分别计算不同尺度下的能谱熵作为特征向量，从而实现掌纹特征提取。该算法不但避免了图像增强和纹理细化等预处理过程，而且运用多分辨信息熵的自适应计算方法来调节分解级数，使得到的特征向量长度远小于传统算法。-In this paper, wavelet image decomposition and information entropy feature extractio
A-survey-of-spectrum-sensing-algorithms-for-cogni
- The spectrum sensing problem has gained new aspects with cognitive radio and opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey of spectrum sensing methodologie
-multi-beam-
- 菲涅尔区聚焦多波束天线空间谱估计性能分析-Fresnel zone focusing spectrum estimation performance of multi-beam antenna spatial analysis
Multi-h-CPM-spread-spectrum
- Applying a direct random spreading sequence to a digital information sequence prior to multi-h modulation creates a new class of signals called spread-spectrum multi-h (SSMH) signaling.
Spectrum-Aware-and-Energy-Efficient-MAC
- Spectrum Aware and Energy Efficient MAC Protocol for Cognitive Radio Sensor Network Designed a spectrum aware multichannel asynchronous duty cycle approach which caters to the requirements of both the domains. The simulation results are also compar