phase shift keying

phase reversal keying

phase coherent frequency shift keying

OQPSK Offset Quadrature Phase Shift Keying

OQPSK Offset Quadraphase Phase Shift Keying

optoisolatoroffset quadrature phase shift keying

optional tasksoffset quadrature phase shift keying

one ahead addressingoffset quadrature phase shift keying

Nonreturn to Zero-Differential Phase Shift Keying

multiple phase shift keying

multiple frequency shift keying telegraph terminal

multiple frequency shift keying

multi-channel frequency shift keying MFSK

Multi phase shift keying

minimum phase shift keying

M-ary phase shift keying