Abstract:A blind demodulation algorithm for MFSK (Mary Frequency Shift Keying) was proposed in the paper. Firstly it exploited STFT to obtain the TFR(time-frequency representation) of MFSK signal. In addition, the Hough transform was applied to extract the modulation parameters, the number and values of carrier frequencies of MFSK signal. Secondly we got M WT plots through the Modified Wavelet transform based on the acquired parameters. Finally, we calculated the code width and demodulated the coding sequence of carrie… Show more
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