Definitions for "QPSK"
modulation method where the carrier can assume 4 possible phase states, each 90 degrees apart.
uadrature hase- hift eying - A digital modulation technique used in modems and wireless networks, allowing the transmission of 2 bits per symbol. Provides a 2:1 compression ratio, resulting in double efficiency for the circuit being used.
The type of modulation DirecTV uses in their satellite transmissions.