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What does time division multiplexing exploit?

  • A.The idle time between one channel's samples
  • B.The unused spectrum above each channel's band
  • C.The difference in amplitude between adjacent channels
  • D.The redundancy present in the channels' own information

Answer: A

Sampling leaves long gaps between a channel's pulses, and multiplexing fills those gaps with the pulses of other channels. Using unused spectrum is frequency division multiplexing, the alternative approach. Amplitude differences and information redundancy are not what the technique relies on. Every multiplexing scheme finds a resource the single channel leaves idle, and here that resource is time.

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