quadrature phase-shift keying

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quadrature phase-shift keying [¦kwäd·rə·chər ′fāz‚shift ‚kē·iŋ]

(communications)

Phase-shift keying in which four different phase angles are used, usually spaced 90° apart. Abbreviated QPSK. Also known as quadriphase; quaternary phase-shift keying.

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No references found			In the upstream direction, the CN9414 includes a Quadrature Phase-Shift Keying /16 QAM burst modulator and a 10-Bit digital/analog converter. CONEXANT UNVEILS SINGLE-CHIP CABLE MODEM WITH MICROPROCESSOR by Modem User News 3 Gb/s (100-113 Gb/s) and incorporates an integrated, dual-polarization quadrature phase-shift keying (DP-DQPSK) modulation precoder function that makes 100G networks extremely resistant to the type of impairments that are often encountered in older fiber. Sierra Monolithics Unveils First 100G Mux and Demux Chipset, A Major ... by Business Wire for the use of its Feher-Patented Quadrature Phase-Shift Keying ("FQPSK") technology. Centraxx Enhances Its Uni-Point Technology -- Signs Licensing Deal ... by Business Wire			Quadratic Curve Quadratic Equation Quadratic Form quadratic formula quadratic function quadratic inequality quadratic performance index quadratic polynomial quadratic programming quadratic reciprocity law Quadratic Residue quadratic Stark effect quadratic surd quadratic Zeeman effect quadratojugal quadratrix of Hippias quadratura quadrature quadrature amplifier quadrature amplitude modulation quadrature component quadrature current Quadrature Formulas quadrature modulation quadrature partial-response keying quadrature phase-shift keying quadrel quadrennial quadric cone quadric curve quadric quantic Quadric Surface quadriceps quadriceps femoris quadrics quadricycle quadridentate ligand quadrifores ianuae Quadriga quadrigeminal body Quadrijugatoridae quadrilateral Quadrille quadrille paper Quadrilles of San Martin quadrillion quadrilocular quadrinomial distribution quadripartite Quadripartite Agreement on West Berlin quadripartite vault			Quadrature Double Sideband Quadrature Elevation Quadrature Encoder Interface Quadrature Error Vector Quadrature formula Quadrature formulas Quadrature Frequency Shift Keying Quadrature Frequency/Phase Modulation Quadrature Generator Quadrature Intermediate Frequency Mixer Quadrature Method of Moments Quadrature mirror filter Quadrature Mirror Filter Bank Quadrature Modulation Quadrature Modulation Quadrature modulator Quadrature Motor Encoder Quadrature Multipath Monitor Quadrature of an orbit Quadrature of the circle Quadrature of the moon Quadrature Offset Raised Cosine Quadrature Partial Response quadrature partial-response keying Quadrature Partial-Response System quadrature phase-shift keying Quadrature Power Splitter Quadrature Product Subcarrier Modulation Quadrature Selective Excitation Quadrature Sideband Amplitude Modulation Quadrature Transmit Filter Quadrature Voltage-Controlled Oscillator Quadrature-Phase Local Oscillator Quadrature-Quadrature Phase Shift Keying Quadratus labii superioris Quadratus lumborum Quadrcycles Quadrel Quadrel quadrella Quadreme Quadreme quadrennia quadrennial quadrennial Quadrennial Defense Review Quadrennial Homeland Security Review Quadrennial Review of Military Compensation Quadrennial Roles and Missions Quadrennial Roles and Missions Review quadrennially quadrennially quadrennium quadrenniums

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