Signal Detection Based on Cyclic Autocorrelation under Noise Uncertainty

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Abstract:

Signal detection is a key enabler of cognitive radio. This paper considers the detection signals in uncertain low SNR environments. We propose a feature detector based on cyclic autocorrelation function of signal. Compared with other feature detector based on cyclic spectral, the proposed detector need lower computational cost than computational cyclic spectrum. Similar radiometer detector,SNR wall also exists in noise power uncertainty model. Beyond this SNR wall robust detection is impossible.Detection performance including the SNR wall is proved.

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1733-1737

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July 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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