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

Given a multilevel block modulation code C with no interdependency among the binary component codes, the proposed method gives a multilevel block modulation code C' that has the same rate as C, a ...

Delta modulation is a technique of encoding analog signals into digital bits by comparing the difference between successive samples. PCM, or pulse code modulation, is another technique that ...

We describe a block-coded modulation method producing variable data-transmission rate using a one-sided link. This method uses signal points that are added to the normal signal constellation of the ...