부산대학교 도서관

A blind detection method based on power spectrum and cyclic spectrum is adopted for the blind detection of stationary signals and periodic stationary signals. This method can accurately determine the existence of a stationary signal. This paper is mainly for Gaussian signals. Firstly, the power spectrum is used for the stationary signal detection. Then, the presence of the to-be-identified signal is detected by the difference between the periodic stationary signal and the Gaussian white noise. The experimental simulation of the detection method shows that the recognition rate of most modulation types can reach about 90% when the signal-to-noise ratio is greater than -10dB, which verifies the effectiveness of the method.