The use of FDM for a single message signal

1. Why do we use FDM in communication?
2. How does FDM combine multiple signals to one?
3. Where do we use FDM?
4. Can FDM send digital signal?

Why do we use FDM in communication?

FDM enables single transmission mediums, such as copper cable or fiber optic cable, to be shared by multiple independent signals that are generated by multiple users. This is why FDM is a popular choice to multiplex calls in telephone networks.

How does FDM combine multiple signals to one?

Frequency Division Multiplexing (FDM) is a networking technique in which multiple data signals are combined for simultaneous transmission via a shared communication medium. FDM uses a carrier signal at a discrete frequency for each data stream and then combines many modulated signals.

Where do we use FDM?

FDM has been popularly used to multiplex calls in telephone networks. It can also be used in cellular networks, wireless networks and for satellite communications.

Can FDM send digital signal?

FDM has the advantage of being relatively simple (witness standard AM radio). It can carry analog or digital signals equally well, but, because it does either equally well, it offers no great advantages to digital.