Also known as PM (Phase Modulation). A signal modulation technique that involves the carefully synchronized shifting of the phase (i.e., position) of the sine wave in order to represent digital bits across an analog carrier.The transmitting computer outputs a baseband electrical signal, defining 1 bits and 0 bits as discrete voltage levels. Binary phase-shift keying (BPSK) is a unibit technique in which a continuous sine wave pattern is interrupted and restarted at the baseline with a 180
(1) See preshared keys.
(2) (Phase Shift Keying) A digital modulation technique that uses two phases for a 0 or 1. Also called "binary PSK" (BPSK), it is the most basic form of phase shift keying. For example, quadrature PSK (QPSK) uses four phase shifts for each two bits of input. See phase modulation, QAM and DPSK.