基于盲学习特征的频谱感知演示
Demonstration of Spectrum Sensing with Blindly Learned Feature
摘要:
频谱感知是认知无线电的核心技术。通过定义前导\textit{eigenvector}作为特征,提出了一种盲特征学习算法(FLA)和一种利用学习到的特征进行频谱感知的特征模板匹配(FTM)算法。我们在Lyrtech软件定义的无线电平台上实现了这两种算法。通过硬件实验验证了该特征可以盲学习。我们在硬件上将FTM与盲检测器进行了比较,结果表明FTM的检测性能优于约3dB。
英文摘要:
Spectrum sensing is essential in cognitive radio. By defining leading \textit{eigenvector} as feature, we introduce a blind feature learning algorithm (FLA) and a feature template matching (FTM) algorithm using learned feature for spectrum sensing. We implement both algorithms on Lyrtech software defined radio platform. Hardware experiment is performed to verify that feature can be learned blindly. We compare FTM with a blind detector in hardware and the results show that the detection performance for FTM is about 3 dB better.
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