| 认知无线电中基于循环平稳特征的频谱感知方法 |
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| 引用本文： | 漆渊,彭涛,钱荣荣,王文博.认知无线电中基于循环平稳特征的频谱感知方法[J].重庆邮电学院学报(自然科学版),2009(3). |
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| 作者姓名： | 漆渊 彭涛 钱荣荣 王文博 |
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| 作者单位： | 北京邮电大学信息与通信工程学院; |
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| 基金项目： | 国家“973”重点基础研究发展计划资助(2007CB310602); NokiaR & DDevice资助 |
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| 摘 要： | 提出一种基于信号频域循环平稳特征的频谱感知方法,该方法能够区分出授权和非授权信号的类型从而获取不同的频谱共享策略将授权信号及非授权信号分别建模成线性周期时变变换,对授权信号和非授权信号进行频域的循环平稳特征分析,给出2类信号呈现循环平稳特征的位置,并给出用于鉴别2类信号的检测方法,其中推导了复过程中近似协方差矩阵的计算。仿真结果验证了该方法能在低信噪比中有效地鉴别出授权及非授权2类信号。
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| 关 键 词： | 认知无线电 频谱感知 循环平稳特征 |
Cyclostationarity-based spectrum sensing in cognitive radio |
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| QI Yuan,PENG Tao,QIAN Rong-rong,WANG Wen-bo.Cyclostationarity-based spectrum sensing in cognitive radio[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(3). |
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| Authors: | QI Yuan PENG Tao QIAN Rong-rong WANG Wen-bo |
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| Institution: | QI Yuan,PENG Tao,QIAN Rong-rong,WANG Wen-bo (School of Information , Communication Engineering,Beijing University of Posts , Telecommunications,Beijing 100876,P.R.China) |
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| Abstract: | A spectrum sensing method exploiting cyclostationarity in frequency domain was proposed.This method can distinguish the types of authorized signal and unauthorized signal and gain different spectrum sharing strategy.The authorized signal and unauthorized signal were modeled to linear periodically time variant(LPTV) transformation,the method for distinguishing these two signals were given,and an approximate computation of covariance matrix for practice was derived. Simulation results show that this method ca... |
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| Keywords: | cognitive radio spectrum sensing cvclostationarity |
| 本文献已被 CNKI 等数据库收录！ |
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