Section 3 details two theoretical approaches for modulation recognition that provide the comparative support in this paper. We present the approach of the phase diagram based entropy in Section 4. In ...

Two important structural properties of block M(=2/sup '/)-ary PSK modulation codes, linear structure and phase symmetry, are investigated. An M-ary modulation code is first represented as a code with ...

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 ...