What is: Multiplexing

What is: Multiplexing

Multiplexing is a technique used in communication networks to transmit multiple signals over a single communication channel. This is achieved by dividing the channel into several sub-channels, each of which can carry a separate signal.

There are different types of multiplexing, including Time Division Multiplexing (TDM) and Frequency Division Multiplexing (FDM). In TDM, signals are transmitted at fixed time intervals, whereas in FDM, signals are transmitted at different frequencies.

Time Division Multiplexing (TDM)

In TDM, each signal is assigned a specific time slot, allowing multiple signals to be transmitted sequentially over the same channel. This is commonly used in telephony systems.

Frequency Division Multiplexing (FDM)

In FDM, each signal is assigned a specific frequency band, allowing multiple signals to be transmitted simultaneously over the same channel. This is commonly used in radio and television broadcast systems.

Multiplexing is essential for maximizing the efficiency of frequency spectrum usage and increasing data transmission capacity in communication networks.