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中文摘要：
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。
英文摘要：
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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