| 衰落信道下能量检测的性能分析 |
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| 引用本文： | 邹丽,张士兵,吉晓东.衰落信道下能量检测的性能分析[J].重庆邮电学院学报(自然科学版),2011(3). |
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| 作者姓名： | 邹丽 张士兵 吉晓东 |
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| 作者单位： | 南通大学电子信息学院; |
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| 基金项目： | 国家自然科学基金(60872002); 江苏省高校自然科学基金(10KJB510020); 南通大学自然科学基金(09Z018)~~ |
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| 摘 要： | 在认知无线电系统中,大部分的无线信道可以表征为NAKAGAM I衰落信道或莱斯衰落信道。针对NAKAGAM I衰落信道和莱斯衰落信道环境下的能量检测,分析了频谱检测虚警概率和漏检概率与信道模型参数之间的关系,比较了单用户检测和多用户合作检测性能,得到了虚警概率和漏检概率数学表达式,为能量检测器的设计提供了性能参考界。数值仿真结果表明,NAKAGAM I信道下,能量检测性能随衰落因子和平均信噪比的增大而改善;莱斯衰落信道下,能量检测性能随平均信噪比的增大而提高;多用户合作检测性能分别比单用户提高1~2个数量级。
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| 关 键 词： | 能量检测 性能分析 NAKAGAMI衰落 莱斯衰落 合作检测 |
Performance analysis of energy detection in fading channels |
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| ZOU Li,ZHANG Shi-bing,JI Xiao-dong.Performance analysis of energy detection in fading channels[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2011(3). |
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| Authors: | ZOU Li ZHANG Shi-bing JI Xiao-dong |
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| Institution: | ZOU Li,ZHANG Shi-bing,JI Xiao-dong (School of Electronics and Information,Nantong University,Nantong 226019,P.R.China) |
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| Abstract: | In cognitive radio,most channels can be characterized by Nakagami channel model or Rician channel model.Starting from the energy detection in Nakagami channel and Rician channel,this paper analyzed the relationships of the false alarm and miss detection probabilities with the channel parameters,compared the performances of single user detection with cooperative detection,derived the expressions of false alarm probability and miss detection probability.It provided an upper bound for designing energy detector... |
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| Keywords: | energy detection performance analysis NAKAGAMI fading Rician fading cooperative detection |
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