What is the need and types of multiplexing?
Multiplexing in the process of simultaneously transmitting two or more individual signals over a signals communication.
Need multiplexing
Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a signals data link.
When many signals or channels are to be transmitted, then from transmitter’s side that sends simultaneously i.e. multiplexer converts many into one, so that at the receiving end also all input we get simultaneously.
Sending many signals separately is expensive and requires more wires to send. So there is a need of multiplexing. For example in cable T.V distributor sends many channels through single wire.
Types of multiplexing
There are types of multiplexing are given below,
- Frequency division multiplexing (FDM).
Frequency division multiplexing
- Wavelength division multiplexing (WDM)
- Time division multiplexing (TDM)
Time division multiplexing
