Automatic modulation recognition is a necessary part of cooperative and noncooperative communication systems plays an important role in military civilian fields. Although the constellation diagram (CD) essential feature for different digital modulations, it hard to be extracted under complex environment. Frequency offset, especially nonlinear frequency offset vital problem environment, which gr...

Recent work in time-frequency analysis proposed to switch the focus from maxima of spectrogram toward its zeros, which, for signals corrupted by Gaussian noise, form a random point pattern with very stable structure leveraged modern spatial statistics tools perform component disentanglement and signal detection. The major bottlenecks this approach are discretization Short-Time Fourier Transform...