认知无线电网络中一种可靠的分布式频谱检测策略
Reliable distributed spectrum sensing strategy in cognitive radio networks
查看参考文献14篇
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文摘
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在认知无线电网络中,频谱环境的不确定性严重影响了频谱检测的准确性和可靠性。针对上述问题,提出一种基于动态信誉模型的可靠的分布式认知无线电频谱检测策略。该策略建立认知用户的频谱检测协作组,基于主观逻辑理论设计分布式节点信誉库,通过信誉的动态更新结果作为频谱检测的信道搜索顺序的依据,提高信道搜索的准确性。该策略能够对恶意用户进行有效地隔离,以避免其对频谱检测的影响,从而提高了频谱检测的可靠性。通过仿真分析可知,与其他信道搜索算法比较,根据该策略设计的分布式频谱搜索算法不仅能够有效地提高频谱检测的效率,而且能够确保频谱的可靠性,从而提高信道的利用率。 |
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其他语种文摘
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The uncertainty of the radio environment has a significant impact on the accuracy and reliability of spectrum sensing in the cognitive radio networks. To solve the problem, a reliable distributed spectrum sensing strategy is proposed, which is based on a dynamic reputation model. Firstly the collaborative group of spectrum detection is established, and then we design a distributed reputation database for nodes on a basis of subjective logic theory. The channel search sequence is updated through the result of dynamic renewal of the reputation. And also the malicious nodes can be effectively isolated by the strategy. The simulation results show that the algorithm according to the strategy not only can improve the accuracy of spectrum sensing, but also ensure the reliability, and thus increase the channel utilization. |
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来源
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重庆邮电大学学报. 自然科学版
,2014,26(6):819-825 【扩展库】
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关键词
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认知无线电网络
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频谱检测
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信誉模型
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信道搜索
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地址
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1.
六盘水师范学院数学系, 贵州, 六盘水, 553004
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福建师范大学数学与计算机科学学院, 福建, 福州, 350007
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重庆邮电大学经济管理学院, 重庆, 400065
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1673-825X |
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学科
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电子技术、通信技术;自动化技术、计算机技术 |
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基金
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福建省自然科学基金
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福建省教育厅A类项目
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文献收藏号
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CSCD:5312215
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参考文献 共
14
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