| 感知中继网络中依据检测结果的频谱共享机制 |
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| 引用本文： | 闫盛楠,王晓湘.感知中继网络中依据检测结果的频谱共享机制[J].北京邮电大学学报,2010,33(5):41-46. |
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| 作者姓名： | 闫盛楠 王晓湘 |
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| 作者单位： | 泛网无线通信教育部重点实验室(北京邮电大学),北京,100876;泛网无线通信教育部重点实验室(北京邮电大学),北京,100876 |
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| 基金项目： | 国家高技术研究发展计划项目(2009AA01Z247,2007AA01Z265); 国家自然科学基金项目(60972076) |
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| 摘 要： | 在感知中继网络中，为实现授权频带在主次用户间的高效利用，提出一种基于检测结果的频谱共享机制，允许次用户根据频谱检测的结果自适应地选择传输方式. 并在该机制下，考虑主次用户间的干扰情况，进而根据信干噪比(SINR)推导出次用户网络的中断概率和符号错误概率的闭式表达式. 仿真结果表明，本机制与传统的频谱共享机制相比，能在保证主用户通信的前提下，使次用户网络获得较高的性能增益.
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| 关 键 词： | 感知中继网络 频谱共享 中断概率 符号错误概率 |
| 收稿时间： | 2009-10-27 |
Performance Analysis of the Spectrum Sharing Scheme Based on Detection Results in Cognitive Relay Networks |
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| YAN Sheng-nan,WANG Xiao-xiang.Performance Analysis of the Spectrum Sharing Scheme Based on Detection Results in Cognitive Relay Networks[J].Journal of Beijing University of Posts and Telecommunications,2010,33(5):41-46. |
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| Authors: | YAN Sheng-nan WANG Xiao-xiang |
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| Affiliation: | YAN Sheng-nan,WANG Xiao-xiang ( Key Laboratory of Universal Wireless Communication ( Beijing University of Posts , Telecommunications),Ministry of Education,Beijing 100876,China) |
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| Abstract: | A spectrum sharing scheme is proposed that allows the cognitive users to select either direct transmission or cooperative underlay transmission adaptively according to the spectrum detection in cognitive relay networks. Moreover,analysis on the cognitive network with this scheme is presented. Based on signal-to-interference and noise ratio (SINR) ,the closed-form expressions of outage probability and the symbol error probability are derived. Simulation shows that this scheme can achieve better performance t... |
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| Keywords: | cognitive relay networks spectrum sharing outage probability symbol error probability |
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