OQPSK (Offset Quadrature Phase Shift Keying)

A variant of QPSK that uses a half-symbol tim-

ing offset to prevent large amplitude fluctuations in the modulated signal. See also amplitude, modulate, QPSK, signal, and symbol.

• extended superframe (ESF)
• Extended TACS (ETACS)
• Extended Total Access Communications System (ETACS)
• Extensible Markup Language (XML)
• Extensible Messaging and Presence Protocol (XMPP)
• Extensions)
• Exterior Gateway Protocol (EGP)
• exterior protocol
• Extra low voltage (ELV)
• extranet
• extremely high frequency (EHF)
• extremely low frequency (ELF)
• extrinsic loss
• f
• Fabry-Perot laser
• face time
• facilities bypass
• facsimile (fax)
• facsimile (fax)
• Facsimile over Internet Protocol (FoIP)
• fair use policy
• fallback modem
• Family Radio Service (FRS)
• fantail circuit
• far-end cross talk (FEXT)