Multiplexing Categories-Cont

™   DEMULTIPLEXING o    DEMUX  uses  a  series  of  filters  to  decompose  multiplexed  signal  into  its constituent signals o    Individual signals are then passed to a demodulator that separates them to the carriers and passes them to the waiting receivers DEMULTIPLEXING (Time Domain)

This figure is the time domain representation of the FDM MUX again using 3 telephones as the communication devices This figure is the time domain representation of the FDM MUX again using 3 telephones as the communication devices Wave Division Multiplexing (WDM) o    It  is  conceptually  the  same  as  FDM  except  that  multiplexing  and  demultiplexing involves light signals TX through fiber optic channels o    Idea is the same: We are combining different signals of the different frequencies o    However in this case frequencies are very high