Time division multiplexing is a technique used to transmit multiple signals over a single channel by dividing the channel into smaller time slots. Each signal is assigned a specific time slot and the signals are transmitted sequentially. This allows for multiple signals to be transmitted simultaneously over the same medium, increasing the efficiency of the transmission.
In TDM for analogue signals, the original analogue signal is sampled and digitized. The digitized samples are then transmitted in a sequential manner, with each sample occupying a specific time slot. At the receiving end, the samples are reconstructed into the original analogue signal.
One of the main advantages of TDM for analogue signals is its ability to transmit multiple signals over a single channel, maximizing the use of the transmission medium. It also eliminates the need for multiple dedicated channels, reducing costs and complexity. Additionally, TDM provides a consistent transmission rate, reducing jitter and improving overall signal quality.
One limitation of TDM for analogue signals is that the quality of the reconstructed signal may be affected by noise and interference during transmission. Additionally, there is a limit to the number of signals that can be transmitted using TDM, as the number of time slots available is limited.
In TDM, multiple signals are transmitted sequentially over the same channel by dividing it into smaller time slots. In FDM, multiple signals are transmitted simultaneously over the same channel by dividing it into different frequency bands. TDM is more suitable for digital signals, while FDM is more commonly used for analogue signals.