Keywords: spread spectrum, phase diagram-based entropy, modulation classification, modulation recognition, cognitive radio, electronic warfare. Citation: Stanescu D, Digulescu A, Ioana C and ...

Keywords: spread spectrum, phase diagram-based entropy, modulation classification, modulation recognition, cognitive radio, electronic warfare Citation: Stanescu D, Digulescu A, Ioana C and Serbanescu ...

Automatic modulation recognition for frequency-hopping (FH) signals remains very challenging to researchers due to the signals' time-varying spectral characteristics. In this work, a novel robust ...