Time division multiplexing (TDM) is a technique used in telecommunications and signal processing to transmit multiple data streams over a single communication channel by interleaving them in time. This allows for more efficient use of the channel's bandwidth and enables multiple users to share the same channel.
In TDM, each data stream is assigned a specific time slot within a predefined time frame. The data from each stream is then transmitted sequentially during its designated time slot. This process repeats continuously, allowing multiple data streams to be transmitted over the same channel without interference.
TDM allows for more efficient use of a communication channel, as it enables multiple data streams to be transmitted simultaneously. It also reduces the overall cost and complexity of a communication system, as it eliminates the need for separate channels for each data stream.
TDM is commonly used in telecommunications, such as in phone systems, where it allows multiple phone calls to be transmitted over the same line. It is also used in digital multiplexers, satellite communications, and data networking systems.
One limitation of TDM is that it requires strict synchronization between the transmitter and receiver to ensure that data is transmitted and received in the correct time slots. It is also not suitable for real-time applications, as there may be delays in the transmission of data due to the interleaving process.