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1 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."
См. также в других словарях:
Frequency-hopping spread spectrum — (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. A spread spectrum transmission offers three main advantages over… … Wikipedia
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