| 感知无线电系统中主用户的中断概率分析 |
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| 引用本文： | 谢显中,赵晖.感知无线电系统中主用户的中断概率分析[J].重庆邮电大学学报(自然科学版),2011,23(4):400-405. |
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| 作者姓名： | 谢显中 赵晖 |
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| 作者单位： | 重庆邮电大学信息产业部移动通信技术重点实验室,重庆,400065 |
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| 基金项目： | 国家自然科学基金（60872037）；重庆市自然科学基金（2008BB2411；2010BB2415）；重庆市教委科学技术研究项目（KJ080508） |
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| 摘 要： | 在感知无线电系统中,不精确的频谱检测错误将会引起感知用户和主用户之间的冲突,对主用户的通信造成干扰.使用马尔可夫链对系统进行建模,得到2种冲突解决方案下的系统状态转移图.采用主用户中断概率作为性能指标估计感知用户对主用户造成的干扰.仿真结果表明,随着感知用户检测概率不断增加,主用户中断概率不断降低,仿真结果和理论分析结...
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| 关 键 词： | 不精确的频谱检测 状态图 主用户中断概率 |
| 收稿时间： | 2010/8/15 0:00:00 |
Analysis of primary termination probability in cognitive radio networks |
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| XIE Xian-zhong,ZHAO Hui.Analysis of primary termination probability in cognitive radio networks[J].Journal of Chongqing University of Posts and Telecommunications,2011,23(4):400-405. |
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| Authors: | XIE Xian-zhong ZHAO Hui |
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| Institution: | Institute of Personal Communication/MII Key Lab on Computer Network and Communication, Chongqing University of Posts and Telecommunications, Chongqing 400065, P.R.China |
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| Abstract: | The secondary users performing imperfect spectrum sensing may cause interference to the primary users in cognitive radio system. We use Markov chain to model the system and obtain two kinds of state transition diagram. We use primary termination probability as the performance metrics to estimate interference caused by the second users to the primary users. Results suggest that the primary termination probability goes down when detection probability increases. Simulation and analysis results agree well. |
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| Keywords: | imperfect spectrum sensing state diagram primary termination probability |
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