MULTIPLEXER & DEMULTIPLEXER

1. Group Member
Shafqat ullah (2k11-coe-08)
YouSuf Nazir(2011-coe-17)
JamShaid ali(2011-coe-10)

2. Multiplexing is the set of techniques that allows the
simultaneous transmission of multiple signals across a
single data link.
Multiplexing (also called muxing ) is a method by which
multiple analog message signals or digital data streams are
combined into one signal
Example:
In telecommunications, several telephone call may be
carried using one wire.

3. A Multiplexer (MUX) is a device that combines
several signals into a single signal.
A Demultiplexer (DEMUX) is a device that
performs the inverse operation.

5. Multiple low data rate signals are
multiplexed over a single high data rate
link, then de-multiplexed at the other end.

9. Space-division multiplexing (SDM)
Frequency-division multiplexing (FDM)
Time-division multiplexing(TDM)
Code division multiplexing (CDM)
Wave Division Multiplexing

10. Categories of Multiplexing

11.  Time-division multiplexing (TDM) is a digital process that can
be applied when the data rate capacity of the transmission
medium is greater than the data rate required by the sending
and receiving devices.

12. TDM
TDM is a digital multiplexing technique to
combine data.

13. TDM can be implemented in two ways: synchronous
TDM and asynchronous TDM.
In synchronous time-division multiplexing, the term
synchronous means that the multiplexer allocates
exactly the same time slot to each device at all times.

15. TDM frames

16. Figure 6.21 Multiplexing and inverse multiplexing