This paper presents a comparative theoretical study of amplitude, phase, and frequency modulation. In the first part, the fundamental mathematical expressions for the three types of modulation are ...

Here, an amplitude-phase-time block modulation (APTBM) scheme and a corresponding demodulation scheme for resisting amplifier nonlinearity are proposed, establishing a new paradigm for balancing the ...

In this study, we use various signal constellation diagrams to classify signal modulations into 8 modulation types namely, Binary Phase-Shift Key-ing (BPSK),4-Pulse Amplitude Modulation ...