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Glossary Digital Television / Term

DQPSK

Differential quadrature phase shift keying. DQPSK is a digital modulation technique commonly used with cellular systems. Motorola's CyberSurfr cable modem uses DQPSK to carry data upstream from the subscriber's computer to the Internet on a narrower frequency band than standard QPSK. Narrower bands allow more upstream channels, so the CyberSurfr has additional noise-free channels to choose from when it's installed.

Permanent link DQPSK - Creation date 2020-05-31


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