| 认知无线电中基于自相关矩阵的协作盲感知 |
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| 引用本文： | 焦传海,王可人,冯辉.认知无线电中基于自相关矩阵的协作盲感知[J].电路与系统学报,2011,16(1):12-19. |
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| 作者姓名： | 焦传海 王可人 冯辉 |
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| 作者单位： | 合肥电子工程学院304实验室,安徽,合肥,230037 |
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| 基金项目： | 解放军电子工程学院博士创新基金 |
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| 摘 要： | 为了克服传统的认知无线电频谱感知算法存在的不足,提出了一种基于自相关矩阵的协作式盲频谱感知方法,以提高频谱感知能力.该方法从样本自相关矩阵中提取检测统计量,采用双门限混合判决方法得到本地检测结果.认知基站将本地检测信息分成两类,并对软判决信息实施可靠性融合,最后给出全局判决结果.该方法是一种盲感知方法,不需要知道主用户...
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| 关 键 词： | 认知无线电 频谱感知 自相关矩阵 协作 盲感知 |
Cooperative blind sensing based on autocorrelation matrix in cognitive radios |
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| JIAO Chuan-hai,WANG Ke-ren,FENG Hui.Cooperative blind sensing based on autocorrelation matrix in cognitive radios[J].Journal of Circuits and Systems,2011,16(1):12-19. |
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| Authors: | JIAO Chuan-hai WANG Ke-ren FENG Hui |
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| Institution: | JIAO Chuan-hai,WANG Ke-ren,FENG Hui(Laboratory 304 of Hefei Electronic Engineering Institute,Hefei 230037,China) |
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| Abstract: | To overcome the disadvantages of the traditional spectrum sensing algorithms in cognitive radio(CR),a scheme of cooperative blind spectrum sensing based on autocorrelation matrix is proposed in order to improve the spectrum sensing performance.The test statistic is extracted from the autocorrelation matrix,calculated using a limited number of signal samples.A bi-threshold mixed decision approach is utilized for local spectrum sensing.The cognitive base station(CBS) categorizes the local detection results in... |
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| Keywords: | cognitive radio spectrum sensing autocorrelation matrix cooperative blind sensing |
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