A scheme in which several channels are interleaved and then transmitted together is known as

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ESE Electrical 2014 Paper 2: Official Paper
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  1. Frequency division multiplexing
  2. TDM
  3. a group
  4. a super group

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Option 1 : Frequency division multiplexing
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A scheme in which several channels are interleaved and then transmitted together is known as Frequency division multiplexing.

In Frequency division multiplexing signals occupy a range of frequency and two adjacent signals are separated by guard band to prevent mixing.

All the multiplexed signals are then transmitted simultaneously

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