利用多抽头谱估计和频谱相关的频谱感知方法  

Spectrum Sensing Using Multi-taper Spectral Estimation and Spectral Correlation

作　　者：任连峻 王挺[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2014年第2期17-19,39,共4页Communication Countermeasures

摘　　要：频谱感知是认知无线电的关键技术之一。讨论了一种利用多抽头谱估计和频谱相关的频谱感知方法。仿真结果表明,相对于利用周期图谱估计和频谱相关的频谱感知方法,在相同虚警概率和相同信噪比下,前者具有更好的检测性能,更加适用于低信噪比下的频谱感知。Spectrum sensing is one of the key technologies for cognitive radios. A spectrum sensing method based on multi-taper spectral estimation and spectral correlation of ideal primary signal and received signal is discussed. Simulation results show that compared with the method using periodgram as power spectral density estimation, the proposed method can obtain higher probability of detection and is more suitable for spectrum sensing in low signal-to-noise ratio.

关 键 词：认知无线电 频谱感知 多抽头谱估计 

分 类 号：TN92[电子电信—通信与信息系统]