Ques : Advantage & Disadvantage of FDM ?

 Advantages of FDM:

1. The users can be added to the system by simply adding another pair of transmitter modulator and receiver demodulators.
2. FDM system support full duplex information (Both side simultaneous Communication) flow which is required by most of application.

Disadvantages of FDM:

1. In FDM system, the initial cost is high. This may include the cable between the two ends and the associated connectors for the cable.
2. A problem with one user can sometimes affect the others.
3. Each user requires a precise carrier frequency for transmission of the signals.