Discussion
Filling the gaps between one channel's samples with other channels' pulses is ______ multiplexing.
Answer: C
This is time division multiplexing, which exploits the idle time sampling leaves behind. Frequency division stacks channels in spectrum instead, code division distinguishes them by orthogonal codes while they share both time and frequency, and wavelength division is the optical form of frequency division. Every multiplexing scheme is named after the resource it divides, which makes the family easy to keep straight. The shared properties explain why these schemes form a family, and the differences explain why more than one exists.
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