Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which scheme carries information in a parameter that noise cannot easily corrupt?

  • A.Flat-top sampled pulse amplitude modulation
  • B.Pulse position modulation
  • C.Pulse amplitude modulation
  • D.Natural sampled pulse amplitude modulation

Answer: B

Position modulation encodes into timing while holding amplitude constant, so a receiver can threshold the pulses and discard amplitude noise entirely. All three amplitude variants carry the message in the very quantity noise adds to, and whether the sampling is natural or flat-top makes no difference to that. Noise immunity always comes from encoding into a parameter the noise does not share.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.