Methods of digital modulation recognition and their testing
نویسنده
چکیده
The paper describes algorithms for the classification of digital modulations and estimation of symbol length. ASK, FSK2, FSK4, MSK, BPSK, QPSK, 8PSK and QAM-16 were chosen for recognition as the best-known digital modulations used in modern communication technologies. The first algorithm is based on module and phase spectrogram analysis, the second algorithm uses instantaneous values of signal (instantaneous amplitude, phase and frequency). For symbol length estimation, three methods were proposed, which are based on the wavelet transform and cepstrum analysis. A method for the examination of recognition and detection algorithms was designed and described.
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