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Additional
Time division multiple access
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Time division multiple access
This article is about the channel access method. The name "TDMA" is also commonly used in the United States to refer to
Digital AMPS
, which is an obsolete mobile telephone standard that uses TDMA to control channel access.
Time division multiple access
(TDMA) is a
channel access method
for shared medium networks. It allows several users to share the same
frequency channel
by dividing the signal into different time slots. The users transmit in rapid succession, one after the other, each using its own time slot. This allows multiple stations to share the same transmission medium (e.g. radio frequency channel) while using only a part of its
channel capacity
. TDMA is used in the digital
2G
cellular systems
such as
Global System for Mobile Communications
(GSM),
IS-136
,
Personal Digital Cellular
(PDC) and
iDEN
, and in the
Digital Enhanced Cordless Telecommunications
(DECT) standard for
portable phones
. It is also used extensively in
satellite
systems,
combat-net radio
systems, and
PON
networks for upstream traffic from premises to the operator. For usage of Dynamic TDMA packet mode communication, see below.
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