Data and infrastructure Definitions

  • C

    cell

    In wireless telephony, a cell is the geographical area covered by a cellular telephone transmitter.

  • cell breathing

    Cell breathing is the constant change of the range of the geographical area covered by a cellular telephone transmitter based on the amount of traffic currently using that transmitter.

  • coaxial antenna

    A coaxial antenna is a variant of the dipole antenna, designed for use with an unbalanced feed line.

  • Complementary Code Keying (CCK)

    Complementary Code Keying (CCK) is a modulation scheme used with wireless networks (WLANs) that employ the IEEE 802.11b specification.

  • CSD (circuit switched data)

    Circuit switched data (CSD) was the original form of data transmission developed for TDMA-based networks, typically obtaining speeds up to 9.6 Kbps.

  • D

    datacard

    A datacard is any removable computer component, approximately the size of a credit card, that contains data, or that contains nonvolatile memory to which data can be written and from which data can be recovered.

  • decibels related to dipole antenna (dBd)

    dBd (decibels related to dipole antenna) is a measure of the gain of an antenna system relative to a dipole antenna at radio frequency.

  • digital audio broadcasting (DAB)

  • digital multimedia broadcasting (DMB)

    Digital multimedia broadcasting (DMB) is the process of multicasting by satellite or terrestrial services (or a combination of both) for reception by mobile and portable devices, particularly cell phones... (Continued)

  • Digital Video Broadcasting (DVB)

    Digital Video Broadcasting (DVB) is a set of standards that define digital broadcasting using existing satellite, cable, and terrestrial infrastructures.

  • dipole antenna

    A dipole antenna is a straight electrical conductor measuring 1/2 wavelength from end to end and connected at the center to a radio-frequency (RF) feed line.

  • dish antenna

    A dish antenna, also known simply as a dish, is common in microwave systems.

  • distributed antenna system (DAS)

    A distributed antenna system (DAS) is a way to deal with isolated spots of poor coverage inside a large building by installing a network of relatively small antennas throughout the building to serve as repeaters.

  • downlink and uplink

    These terms should not be confused with downstream and upstream.

  • E

    EDGE (Enhanced Data GSM Environment)

    EDGE (Enhanced Data GSM Environment) is a faster version of GSM designed to deliver data at rates up to 384 Kbps and enable the delivery of multimedia and other broadband applications to mobile phone and computer users.

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