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简要介绍了认知无线电通信系统中基于能量检测的谱感知方法,分析了能量检测法的原理和性能。探讨了噪声不确定性产生的原因,分析了在该条件下对信噪比门限和对检测性能的影响。仿真实验表明,能量检测法是一种有效的频谱感知方法。
The spectrum sensing method based on energy detection in cognitive radiocommunication system is briefly introduced. The principle and performance of energy detection method are analyzed. The reason of the noise uncertainty is discussed, and the influence of the signal to noise ratio threshold and the detection performance under the condition is analyzed. Simulation results show that energy detection is an effective spectrum sensing method.