Extracting seven instantaneous information-based features from signals: maximum value of zero-centered normalized instantaneous amplitude power spectral density, standard deviation of zero-centered normalized instantaneous amplitude absolute value,
standard deviation of absolute value of instantaneous phase nonlinear component in zero-centered non-weak signal segments, standard deviation of instantaneous phase nonlinear component in zero-centered non-weak signal segments,
standard deviation of absolute value of zero-centered normalized instantaneous frequency in non-weak signal segments, maximum value of normalized instantaneous frequency power spectral density in a signal segment,
and a novel feature parameter based on different projection characteristics of QPSK and 16QAM signals on the XI axis.
MATLAB
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