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TDMA
Time Division Multiple Access or
TDMA is a technology for shared medium networks. It allows several
users to share the same frequency by dividing it into different
time slots. The users transmit in rapid succession, one after the
other, each using their own timeslot. This allows multiple users
to share the same transmission medium (e.g. radio frequency) whilst
using only the part of its bandwidth they require. It is mainly
used in the GSM, PDC, iDEN digital cellular standards,satellite
systems, local area networks, physical security systems, and combat-net
radio systems.
TDMA was first specified as a standard in EIA/TIA Interim Standard
54 (IS-54). IS-136, an evolved version of IS-54, is the United States
standard for TDMA for both the cellular (850 MHz) and personal communications
services (1.9 GHz) spectrums.
The name "TDMA" is also commonly used in America to refer
to a specific second generation (2G) mobile phone standard, more
properly referred to as IS-136 or D-AMPS, which uses the TDMA technique
to timeshare the bandwidth of.
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