线性加权合并p次方频谱检测的研究

Research into p-th Power Spectrum Sensing of Weighted Linear Combining

认知无线电技术的应用提高了频谱利用率。认知无线电的前提是授权频带的频谱检测,频谱检测中最有效的方法是能量检测,能量检测是基于幅度2次方的检测。对基于等增益合并(EGC)p次方检测的算法进行改进,提出了线性加权合并(WLC)算法,经仿真验证,WLC方法的检测性能优于EGC。

Abstract:The application of cognitive radio(CR)technology improves the spectrum utilization.The spectrum sensing of authorized frequency band is the premise of CR.The most effective method of spectrum sensing is energy detection.The energy detection is based on the detection of quadratic amplitude.This paper improves the algorithm based on p-th power sensing of equal gain combining(EGC),presents the weighted linear combining(WLC)algorithm.The detection performance of WLC is better than that of EGC verified through simulation validation.