| 基于蒙特卡洛方法的频谱能量检测研究 |
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| 引用本文： | 王蒙,陈德章,杨晶晶,王鲁嘉,黄铭. 基于蒙特卡洛方法的频谱能量检测研究[J]. 无线电工程, 2013, 43(1): 15-17,49 |
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| 作者姓名： | 王蒙 陈德章 杨晶晶 王鲁嘉 黄铭 |
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| 作者单位： | 1. 云南大学信息学院,云南昆明,650091
2. 云南省无线电监测中心,云南昆明,650228 |
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| 摘 要： | 频谱传感是下一代无线通信网络的基础。基于蒙特卡洛方法,建立了频谱能量检测的数学模型,仿真了典型信道条件下频谱能量检测的性能,并分析了相应信道条件下虚警率、信噪比、检测时间与检测率之间的关系,以及Log-Normal信道下标准差对检测率的影响。结果表明:仿真结果与理论一致,增加观察时间、提高信噪比或采用分集技术都有利于提高检测率;与理论方法比较,蒙特卡洛方法具有通用性,适用于更复杂的信道情况。
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| 关 键 词： | 谱传感 能量检测 蒙特卡洛方法 认知无线电 衰落信道 |
Study of Spectrum Sensing Based on Energy Detection Using Monte Carlo Method |
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| WANG Meng , CHEN De-zhang , YANG Jing-jing , WANG Lu-jia , HUANG Ming. Study of Spectrum Sensing Based on Energy Detection Using Monte Carlo Method[J]. Radio Engineering of China, 2013, 43(1): 15-17,49 |
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| Authors: | WANG Meng CHEN De-zhang YANG Jing-jing WANG Lu-jia HUANG Ming |
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| Affiliation: | 1(1.School of Information Science and Engineering,Yun’nan University,Kunming Yun’nan 650091,China; 2.Radio Monitoring Center of Yun’nan,Kunming Yun’nan 650228,China) |
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| Abstract: | Spectrum sensing is the foundation of next generation wireless network.Using Monte Carlo method,a spectrum sensing model based on energy detection is established and simulated under several typical channel conditions;the relationships between false alarm rate,signal-to-noise ratio,detection time and detection ratio,and the influence of standard deviation on detection ratio for different channels are analyzed in detail.The results show that the simulation is in good agreement with the theoretical results,that is,the detection ratio can be increased by increasing the detecting time,improving the signal-to-noise radio or adopting the diversity technique.Compared with theoretical method,the Monte Carlo method is much more suitable for complicated wireless channel. |
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| Keywords: | spectrum sensing energy detection Monte Carlo method cognitive radio fading channel |
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