Discussion
Assertion (A): Assertion: Regeneration removes quantisation noise from a coded signal.
Reason (R): Reason: A regenerator reconstructs each pulse cleanly regardless of the noise on it.
Select the correct answer from the options below.
Answer: A
The reason is true but the assertion is false: quantisation noise is built into the coded values themselves, so a perfect regenerator reproduces it faithfully. What regeneration removes is noise the channel added. The distinction is the whole reason coder resolution is specified separately from link quality: one impairment can be cleaned up along the route and the other cannot.
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