A communication system needs to convey multiple messages simultaneously from
a number of information sources in one location to a
number of users at another. Multiplexing schemes economically meet
this need by combining the messages from several information sources
to be transmitted as a complete group over a single
transmission facility with provision at the receiver(s) for separation (demultiplexing)
back to the individual messages. There are two generic forms
of multiplexing: frequency-division multiplexing (FDM) and time-division multiplexing (TDM).
Other topics in our resources on Communications Systems related to Multiplexing include: