A Combined Modulation Recognition Based on Cyclic Spectrum and High-order Cumulants.

To solve the problem of satellite communication signal modulation mode recognition, a novel method based on the cyclic spectrum and high-order cumulants is proposed. In this method, the cyclic spectrum feature is added in the high-order cumulants method and many feature parameter dicisions are combined to construct identifier, cyclic spectrum is used to solve the classification problem of ASK, FSK, PSK and {2ASK, 4ASK}modulation recognition firstly, then, higher-order cumulants method is adopted to realize class recognition of FSK, PSK modulation signal. Simulation results show that the algorithm can recognize the main modulations {ASK, 2ASK, 2FSK, 4FSK, BPSK, QPSK} used by satellite communication and the average recognition rate is more than 88% when the signal-to-noise ratio(SNR)⩾5 dB. [ABSTRACT FROM AUTHOR]