quadrature phase-shift keying (QPSK)
Telecommunications
Phase-shift keying in which four different phase angles are used. Note: In QPSK, the four angles are usually out of phase by 90°. Synonyms quadriphase, quaternary phase-shift keying.
Phase-shift keying in which four different phase angles are used. Note: In QPSK, the four angles are usually out of phase by 90°. Synonyms quadriphase, quaternary phase-shift keying.