Description: 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 of spectrum sensing methodologies for cognitive radio is presented. Various aspects of spectrum sensing problem are studied from a cognitive radio perspective and multi-dimensional spectrum sensing concept is introduced. Challenges associated with spectrum sensing are given and enabling spectrum sensing methods are reviewed. The paper explains the cooperative sensing concept and its various forms. External sensing algorithms and other alternative sensing methods are discussed. Furthermore, statistical modeling of network traffic and utilization of these models for prediction of primary user behavior is studied. Finally, sensing features of some current wireless standards are given. Platform: |
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Author:chenpeng3361 |
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Description: 认知无线电中频谱感知是其应用的基础和前提，文章是最新频谱感知的形式-Spectrum sensing in cognitive radio applications is the basis and premise, the article is the latest form of spectrum sensing Platform: |
Size: 4963328 |
Author:张玉 |
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Description: 频谱感知是认知无线电的一个重要前提，而能量检测法则是比较成熟的频谱感知算法。它可以有效地凡发现频谱孔，使得认知无线电与周围通信环境相适应-Spectrum sensing cognitive radio is an important prerequisite, and the law of energy detection of the spectrum is a more mature perception algorithm. Where it can be found in the spectrum hole, making cognitive radio communication with the surrounding environment to adapt to Platform: |
Size: 3675136 |
Author:张玉 |
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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: 频谱感知技术是认知无线电技术里最关键和最具挑战性的技术-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 Platform: |
Size: 247808 |
Author:zhou |
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Description: cognitive radio model as in an efficient Discovery of Spectrum Opportunities with MAC-Layer Sensing in Cognitive Radio Networks Platform: |
Size: 2048 |
Author:sahar |
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Description: （D-S）基于认知无线电的频谱感知技术的研究,是一种信息融合的频谱感知技术。-(DS) based on cognitive radio spectrum sensing technology research, is an information fusion spectrum sensing technology. Platform: |
Size: 1238016 |
Author:呆呆 |
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Description: 认知无线电中频谱感知技术的AM信号能量检测技术和周期平稳检测技术-Spectrum sensing in cognitive radio technologies AM signal energy detection and cyclostationary detection Platform: |
Size: 1024 |
Author:葛海 |
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Description: 介绍认知无线电频谱检测技术，包括传统以及现代方法-Introduction to Cognitive radio frequency spectrum detection technology, including traditional and modern methods Platform: |
Size: 875520 |
Author:刘广川 |
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Description: 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 the uncertainty of the noise effect on detection performance. Simulations show that the energy detection method is a simple, effective spectrum sensing method. Platform: |
Size: 282624 |
Author:张颖 |
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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: 749568 |
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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