o Figure shows a Time domain fdm
o FDM is an analog process and we show it
here in using Telephones as I/p & o/p
devices
o Each telephone generates a signal of
similar frequency range
o Inside
the MUX, these
similar signals are
modulated on to
different carrier
frequencies
o The resulting modulated signals are then
combined into a single composite signal
that
is sent over a media link that has enough BW to accommodate it
|
o Fig is freq domain representation of FDM
process
o In FDM, signals are modulated onto
separate carrier frequencies (f1,f2,f3) using either
FM
or AM
o Modulating one signal into the other
results in a BW of at least twice the original
|
No comments:
Post a Comment