计算机科学 ›› 2010, Vol. 37 ›› Issue (3): 125-127.
• 计算机网络与信息安全 • 上一篇 下一篇
丁汉清,杨家玮,赵志远
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DING Han-qing,YANG Jia-wei,ZHAO Zhi-yuan
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摘要： 分析了认知无线电网络中使用能量检测器进行频谱检测的性能。仿真结果表明，衰落会使认知无线电用户检测性能下降，采用硬合并协作方案的合作频谱检测可以提高认知无线电系统的检测概率，但认知无线电系统的虚警概率也会随着参与协作的用户数的增多而上升，特别是控制信道不理想时，协作检测会导致虚警概率下限的出现，造成频谱利用率达不到预期的目标。
关键词: 认知无线电，频谱空穴，频谱感知
Abstract: We analyzed the performance of spectrum sensing with energy detector in cognitive radio network. The resups of simulation indicate that fading decreases the detection performance of an individual cognitive radio user, and hard combination cooperative spectrum sensing can improve the cognitive radio system's detection probability, but the cognitive radio system's false alarm probability increases as the number of cooperative users increasing. Especially,when control channels are not reliable, low bound of false alarm probability will appear and result in decrease of spectrum utilization.
Key words: Cognitive radio, Spectrum hole, Spectrum sensing
丁汉清,杨家玮,赵志远. 认知无线电网络中频谱感知性能分析[J]. 计算机科学, 2010, 37(3): 125-127. https://doi.org/
DING Han-qing,YANG Jia-wei,ZHAO Zhi-yuan. Performance Analysis of Spectrum Sensing in Cognitive Radio Network[J]. Computer Science, 2010, 37(3): 125-127. https://doi.org/
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