Fixed Order Time Division Multiplexing | Generated by AI
Question: In time-division multiplexing, which type is characterized by allocating time slots to various signals in a fixed order?
Answer:
The type of time-division multiplexing that allocates time slots to various signals in a fixed order is called Synchronous Time-Division Multiplexing (STDM).
Explanation:
- Synchronous TDM:
- Time slots are pre-assigned to each input channel in a round-robin fashion, regardless of whether the channel has data to send.
- The order of transmission is fixed and predictable.
- If a channel has no data, its time slot remains empty, which can lead to inefficiency.
- Commonly used in traditional telephone systems (e.g., T1/E1 lines).
- Asynchronous TDM (also known as Statistical TDM):
- Time slots are allocated dynamically based on demand.
- Only active channels get time slots, improving bandwidth efficiency.
- The order is not fixed; it depends on which channels have data ready to transmit.
Since the question specifies “allocating time slots in a fixed order,” the correct answer is Synchronous Time-Division Multiplexing.
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