| 基于囚徒困境的认知无线电竞争频谱共享分析 |
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| 引用本文： | 田峰,杨震.基于囚徒困境的认知无线电竞争频谱共享分析[J].南京邮电大学学报(自然科学版),2008,28(3). |
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| 作者姓名： | 田峰 杨震 |
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| 作者单位： | 1. 南京邮电大学自动化学院,江苏南京,210003;南京邮电大学信号处理与传输研究院,江苏南京,210003
2. 南京邮电大学信号处理与传输研究院,江苏南京,210003 |
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| 基金项目： | 国家自然科学基金
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教育部科学技术研究项目
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江苏省教育厅重点科技项目 |
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| 摘 要： | 利用囚徒困境模型,分析了认知无线电用户相互竞争频谱空间的问题.自私理性的认知无线电用户贪婪的扩展自身所占频谱空间,并通过频分复用或迭代注水等方式实现最大化自身速率,最终导致了纳什均衡.比较此非合作情形下两用户的性能回报矩阵并得到该模型下信噪比与干扰增益的关系.最后在该条件下仿真和分析竞争频谱共享的性能.
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| 关 键 词： | 认知无线电 囚徒困境 竞争频谱共享 纳什均衡 |
An Analysis of Competitive Spectrum Sharing Based on Prisoners' Dilemma in Cognitive Radios |
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| TIAN Feng,YANG Zhen.An Analysis of Competitive Spectrum Sharing Based on Prisoners'' Dilemma in Cognitive Radios[J].Journal of Nanjing University of Posts and Telecommunications,2008,28(3). |
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| Authors: | TIAN Feng YANG Zhen |
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| Institution: | TIAN Feng1,2,YANG Zhen2 1.College of Automation,Nanjing University of Posts , Telecomnnications,Nanjing 210003,China2.Institute of Signal , Information Processing,China |
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| Abstract: | An analysis is presented for the competitive spectrum sharing based on the prisoners' dilemma model in Cognitive Radios(CRs).Selfish and rational CR users greedily extend their own spectrum space in order to maximize their own rates by means of FDM or IWF,which leads to Nash equilibrium.We compare the two users' rate payoff matrix and derive the relation between SNR and interference gain through the definition of prisoners' dilemma.Finally we simulate and analyze the performance of competitive spectrum shar... |
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| Keywords: | cognitive radio prisoners\' dilemma competitive spectrum sharing Nash equilibrium |
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