Abstract
As the spectral recourses are limited, the spectrum efficiency is more important for the design of wireless sensor network. In this paper, a spectral correlation based detection method for spectrum sensing is proposed to increase the spectrum efficiency in wireless sensor network. The signal of interests is modeled as a cyclostationary random process, therefore, the spectral correlation function could be used, and a squared coherence function is used as the decision criterion. Simulations are made based on the 4-FSK signal. The results verify that the proposed method outperforms the conventional energy detection.
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