Description: Spectrum sensing is a key technology in Cognitive
Radio (CR). It provides the CR system with available vacant
channels list by sensing the spectrum environment over a wide
frequency band. However, local sensing by single node will be
compromised if the sensing node experiences shadowing or
fading effect. Cooperative spectrum sensing is derived to solve
this problem Platform: |
Size: 337920 |
Author:phong |
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Description: Cognitive Radios (CRs), which sense the spectrum and
implement opportunistic sharing when no licensed user is
found to use it, are able to improve the efficiency of
spectrum. Spectrum sensing must be firstly solved in CRs.
Cooperative sensing can make good use of network
resources, obtain higher gain and make the network steadier Platform: |
Size: 106496 |
Author:phong |
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Description: ：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。仿真表明，在低信噪比环境下，即使噪声短时间内的平均功率存在较大的波动性，只要适当地
增加协同检测的用户数，仍可获得较为准确的检测性能。-In this paper, detection performance and detection sensitivity with detection duration and noise average
power fluctuation in short time is investigated firstly. Performance accuracy and detection sensitivity drop quickly
with noise average power fluctuation increasing and it is worse when signal-to-noise ratio lower. Considering the
characteristic, a novel new energy detection algorithm based on cooperative is presented. Simulations show that
the proposed scheme improves antagonism of noise average power fluctuation in short time and gets a good
detection performance as long as increasing the number of cooperative detection users. Platform: |
Size: 606208 |
Author:刘德龙 |
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Description: 基于能量检测的频谱感知.由于实际信道中的多径和阴影效应，单个认知用户频谱感知的性能受到影响，因此需要靠不同用户间的协同频谱感知来对抗多径和阴影效应。本设计要求在文中采用一种协作机制，即两用户进行协作频谱感知，提高主用户的检测率，减少检测时间，并且得到捷变增益。要求给出仿真结果。-spectrum sensing in cognitive radio based on energy detection.As the channels in diameter and shadow, not a single user spectrum of capabilities and therefore need different between a user to the spectrum is perceived as more and the effect. this design for the use of a coordination mechanism, the two users collaborate spectrum, the detection rate of increase and decrease the test of time and get a change requires immediate gain. some emulation.
Platform: |
Size: 281600 |
Author:林熙怡 |
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Description: 认知无线电是一种用于提高无线电通信频谱利用率的新的智能技术. 首先简述认知无线电的背景和概念,针
对认知无线电的频谱感知功能,详细地分析基于能量检测的频谱检测方法,在此基础上研究了噪声方差的不确定
性对检测性能的影响. 针对无线信号检测具有本地局域性和能量检测存在信噪比极限的特点,提出一种分布式有
限合作检测机制,推导出基于“OR”规则的有限合作机制的检测概率,并进行Monte Carlo仿真.-Cognitive radio is a radio communications spectrum used to improve the efficiency of the new smart technology. First, the background and outlined the concept of cognitive radio, spectrum sensing for cognitive radio capabilities, a detailed analysis of the spectrum based on energy detection test In this study the noise variance based on the uncertainty of the detection performance. for wireless signal detection with local detection of localized and there is signal to noise ratio limit of the energy characteristics of a distributed cooperative detection mechanism, derived out based on " OR" rules of the detection probability of the limited cooperation mechanism and conduct Monte Carlo simulation. Platform: |
Size: 183296 |
Author:林熙怡 |
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Description: ：随着无线技术的飞速发展，频谱缺乏已经成为一个非常严重的问题．感知无线电技术能有效解
决频谱紧张的现状．介绍了感知无线电概念及其内涵，然后介绍了检测频谱空穴的方法．为提高检测概率、
降低设备复杂度及计算复杂度，将UWB与感知无线电结合，提出了基于能量检测及用户合作（EDAUC）的
协作感知方法．仿真和分析表明：该方法能有效提高检测频谱空穴的概率．-: With the rapid development of wireless technology, the lack of spectrum has become a very serious problem. Cognitive radio technology can effectively solve the spectrum tense situation. Introduced the concept of cognitive radio and its content, and then introduces the method of detection of spectrum holes. To improve the detection probability and reduces the complexity and computational complexity, the combination of UWB and cognitive radio is proposed based on energy detection and user cooperation (EDAUC) the cooperative sensing methods. Simulation and analysis: This method can improve the probability of detection of spectrum holes. Platform: |
Size: 282624 |
Author:林熙怡 |
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Description: 基于双门限的协作能量检测方法以及Dempster-Shafer理论-Double Threshold Energy Detection of Cooperative Spectrum Sensing in Cognitive Radio Platform: |
Size: 661504 |
Author:陈蓝天 |
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Description: 一篇很好的关于认知无线电协作频谱感知方面的英文资料，具有很高的参考价值。-A good collaboration on spectrum sensing in cognitive radio information in English, with a high reference value. Platform: |
Size: 569344 |
Author:feixiang |
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Description: 认知无线电中基于能量检测的协作频谱感知，资料中涉及到不同信噪比、采样点数、协作结点的检测概率，具有一定的参考性。-Cognitive radio based on energy detection cooperative spectrum sensing, data related to different SNR, sampling points, the detection probability of cooperative node has a certain reference. Platform: |
Size: 11264 |
Author:guhui |
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Description: 认知无线电中基于压缩感知的协作频谱检测算法。用matlab实现该算法的仿真结果。-Compressed sensing in cognitive radio based cooperative spectrum sensing algorithm. Implementation of the algorithm using matlab simulation results. Platform: |
Size: 3072 |
Author:wanghailian |
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Description: matlab仿真设计频谱感知技术，使用and准则仿真实现不同用户合作频谱感知，进行性能仿真。-matlab simulation design spectrum sensing techniques and guidelines for the use of simulation to achieve different user cooperative spectrum sensing, performance simulation。 Platform: |
Size: 1024 |
Author:gll |
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Search - Cooperative Spectrum Sensing matlab