| 基于能量和循环谱的两步频谱感知 |
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| 引用本文： | 曹 蒙,余志勇,谭武端. 基于能量和循环谱的两步频谱感知[J]. 太赫兹科学与电子信息学报, 2011, 9(5): 560-563 |
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| 作者姓名： | 曹 蒙 余志勇 谭武端 |
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| 作者单位： | 第二炮兵工程学院,陕西西安,710025 |
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| 摘 要： | 频谱感知是认知无线电的重要技术之一,它通过实时感知电磁环境以判断频谱空穴的存在。根据能量检测的检测时间短,以及循环平稳特征检测在低信噪比情况下的检测准确性高的优点,提出了基于能量和循环谱的两步检测算法。通过实验仿真表明,与循环平稳特征检测相比,两步检测的检测时间大幅度缩短,同时检测准确性也得到了提高。
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| 关 键 词： | 能量检测 循环平稳特征检测 两步检测 |
| 收稿时间： | 2010-06-02 |
| 修稿时间： | 2010-08-04 |
Two steps spectrum sensing based on energy and cyclostationary spectrum |
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| CAO Meng,YU Zhi-yong and TAN Wu-duan. Two steps spectrum sensing based on energy and cyclostationary spectrum[J]. Journal of Terahertz Science and Electronic Information Technology, 2011, 9(5): 560-563 |
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| Authors: | CAO Meng YU Zhi-yong TAN Wu-duan |
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| Affiliation: | CAO Meng,YU Zhi-yong,TAN Wu-duan (The Second Artillery Engineering College,Xi'an Shaanxi 710025,China) |
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| Abstract: | Spectrum sensing is one of the important techniques for cognitive radio.It detects the surrounding electromagnetic environment in real-time to make sure whether 'spectrum hole' exists or not.According to the advantages including less detection time of energy detection and the higher detection accuracy of cyclostationary detection,this paper puts forward two steps detection method based on energy and cyclostationary spectrum.The results of simulation show that,contrasted to cyclostationary detection,the two ... |
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| Keywords: | energy detection cyclostationary detection two steps detection |
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