What is time-division multiplexing?

A technique where multiple signals share a single transmission channel by allocating each signal a distinct time slot in a repeating sequence.

In time-division multiplexing, what happens to each input signal during the sampling process?

Each input signal is sampled in turn, sequentially.

After individual signals are sampled in TDM, how are the samples organised for transmission?

The samples are combined into a single stream by interleaving them into a composite signal.

How is the composite signal in time-division multiplexing sent to the receiver?

The composite signal is transmitted along one channel.

What happens to the composite signal at the receiver in a TDM system?

The samples are separated and directed to the appropriate outputs corresponding to each original signal.

Why is synchronisation essential between transmitter and receiver in time-division multiplexing?

So that each time slot is correctly allocated to the corresponding signal, ensuring samples are routed to the correct output channels.

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Time-division multiplexing

2 things to know
Paper 3, section B

Overview

Interleaving sampled signals into frames, and keeping transmitter and receiver in step.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Process

How are input signals sampled, combined and sent in time-division multiplexing?

Key term

What is a frame in time-division multiplexing, and what signals is it used with?

Questions from this subtopic

Each one with the model answer underneath.

1
What is time-division multiplexing?
Model answer
A technique where multiple signals share a single transmission channel by allocating each signal a distinct time slot in a repeating sequence.
2
In time-division multiplexing, what happens to each input signal during the sampling process?
Model answer
Each input signal is sampled in turn, sequentially.
3
After individual signals are sampled in TDM, how are the samples organised for transmission?
Model answer
The samples are combined into a single stream by interleaving them into a composite signal.
4
How is the composite signal in time-division multiplexing sent to the receiver?
Model answer
The composite signal is transmitted along one channel.
5
What happens to the composite signal at the receiver in a TDM system?
Model answer
The samples are separated and directed to the appropriate outputs corresponding to each original signal.
6
Why is synchronisation essential between transmitter and receiver in time-division multiplexing?
Model answer
So that each time slot is correctly allocated to the corresponding signal, ensuring samples are routed to the correct output channels.

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