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1 radio frequency identification
"A technology that uses radio frequencies to identify products. An RFID-capable product has an RFID tag that can transmit information, such as serial number, to an RF reader, which converts the information into digital data that can be sent to a computer."مُعِرف تردد لاسلكىEnglish-Arabic terms dictionary > radio frequency identification
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2 attenuation
"The weakening of a transmitted signal, such as the distortion of a digital signal or the reduction in amplitude of an electrical signal. Attenuation is usually measured in decibels and is sometimes desirable, as when signal strength is reduced electronically, for example, by a radio volume control, to prevent overloading." -
3 communication channel
"A medium for transferring information. Depending on its type, a communications channel can carry information (data, sound, and/or video) in either analog or digital form. A communications channel can be a physical link, such as the cable connecting two stations in a network, or it can consist of some electromagnetic transmission on one or more frequencies within a bandwidth in the electromagnetic spectrum, as in radio and television, or in optical, microwave, or voice-grade communication." -
4 GSM
"A digital cellular phone technology (standard) first deployed in 1992. GSM uses narrowband TDMA, which allows eight simultaneous calls on the same radio frequency." -
5 RFID
"A technology that uses radio frequencies to identify products. An RFID-capable product has an RFID tag that can transmit information, such as serial number, to an RF reader, which converts the information into digital data that can be sent to a computer."
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