| 一种基于信噪比(SNR)比较的感知节点数目优化算法 |
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| 引用本文： | 徐帅,龙华,刘增力,邵玉斌. 一种基于信噪比(SNR)比较的感知节点数目优化算法[J]. 云南大学学报(自然科学版), 2011, 33(2): 158-163 |
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| 作者姓名： | 徐帅 龙华 刘增力 邵玉斌 |
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| 作者单位： | 昆明理工大学信息工程与自动化学院; |
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| 基金项目： | 国家自然科学基金资助项目(60872157); 云南省科技计划资助项目(2009CA027) |
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| 摘 要： | 协作频谱感知虽然可提高系统的感知性能,但随着感知节点数目的增加,系统资源的占用越来越多,系统传输效率下降.分析了协作频谱感知方法的感知性能,得到协作频谱感知的感知性能与感知节点数目和接收信噪比之间的关系,提出了一种新的次级用户节点的选择方法,该方法有效保证了所选择节点的感知性能,仿真验证了该算法的有效性和可靠性.
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| 关 键 词： | 认知无线电 频谱感知 协作 节点数目 信噪比 |
| 收稿时间： | 2010-07-20 |
Optimum number algorithm of secondary users based on SNR comparison |
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| XU Shuai,LONG Hua,LIU Zeng-li,SHAO Yu-bin. Optimum number algorithm of secondary users based on SNR comparison[J]. Journal of Yunnan University(Natural Sciences), 2011, 33(2): 158-163 |
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| Authors: | XU Shuai LONG Hua LIU Zeng-li SHAO Yu-bin |
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| Affiliation: | XU Shuai,LONG Hua,LIU Zeng-li,SHAO Yu-bin(Automation and Information Engineering,Kunming University of Science and Technology,Kunming 650051,China) |
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| Abstract: | Although cooperative spectrum sensing can greatly improve sensing performance,transmission efficiency will decrease with the number of sensing nodes increasing,which will consume more system resources.The performance of cooperative spectrum sensing is investigated,and the relationship among the performance,node number and average signal-to-noise ratio is derived.A method for selecting a set of sensing nodes is proposed,which can guarantee the sensing performance of the selected node.Simulation results show ... |
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| Keywords: | cognitive radio spectrum sensing cooperative nodes number signal-to-noise ratio |
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