Exam-style question
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In a time‑division multiplexing system, why is synchronisation required between the transmitter and receiver?.
- A.To ensure the receiver knows when each channel's time slot starts
- B.To adjust the amplitude of the transmitted signals
- C.To change the carrier frequency used by the system
- D.To encrypt the data being transmitted
Model answer
What a good answer should say
- To ensure the receiver knows when each channel's time slot starts
Explanation
Why this works
Evidence: the timing diagram shows discrete, non‑overlapping time slots for each channel. Interpretation: for the receiver to correctly demultiplex the incoming signal, it must be aligned with the transmitter's slot boundaries.
Implication: without synchronisation, the receiver would misinterpret which part of the signal belongs to which channel. Conclusion: synchronisation is needed so the receiver knows when each channel's time slot starts.
Common mistake
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