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Table 3.1 2G Cellular Systems.
2G Cellular System Category 2G Cellular Systems
Time-division multiple access (TDMA) Global system for mobile (GSM)
Digitized advanced mobile phone system (D-AMPS)
(IS-136)
Packet data cellular (PDC)
Code-division multiple access (CDMA) CDMA (IS-95)
cellular networks for data-centric applications and services. Second-
generation cellular systems can be divided into two categories accord-
ing to the multiplexing access scheme of the radio interface: TDMA
or CDMA. The TDMA systems include GSM, D-AMPS (also referred to
as IS-136 to supersede IS-54), and packet data cellular (PDC, used in