一种基于Goertzel算法的频谱感知方法

Spectrum Sensing Method Based on Goertzel Algorithm

频谱感知是认知无线电的首要任务,传统的扫描式宽带频谱感知方法效率不高,因为对于具有高占用率的频率信道不需要经常感知。文章提出一种基于Goertzel算法的频谱感知方法,适于针对宽带频谱内具有高可用性的频率信道进行监控和检测。介绍了该方法的工作原理和实现结构。通过仿真实验可看出,该方法可以有效实现对频带内某些指定频率进行感知。

Spectrum sensing is the chief task in cognitive radio systems. Conventional scan-based approach to wideband spectrum sensing is inefficient. This paper presents a spectrum sensing method based on Goertzel algorithm that is suitable to monitor and detect some frequency of wideband spectrum with high channel availability. The principle and the realization structure of the proposed method are characterized. Simulation result shows that this method can sense some appointed frequency of the whole band effectively.