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What is Digital Mobile Telephony Overview about?

The document discusses digital mobile telephony and North American digital cellular (NADC) systems. NADC, also known as D-AMPS, uses a digital upgrade from the previous analog AMPS system to provide compatibility. D-AMPS utilizes time division multiple access (TDMA) with 6 digital channels within each 30 kHz AMPS frequency band. It supports vector sum excited linear predictive (VSELP) coding at 13 kbps and provides three times the capacity of AMPS. Control channels enable functions like mobile assisted hand

Author

Weniren

Language

EN