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Communication SystemsFrequency Modulation

Pre-emphasis and de-emphasis in FM systems are used primarily to improve?

  • AHigh-frequency noise performance
  • BDC supply regulation
  • CAntenna mechanical strength
  • DCarrier power efficiency to 100%
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Correct Answer: A. High-frequency noise performance
Explanation: Pre-emphasis boosts higher message frequencies before transmission and de-emphasis restores the response at the receiver while reducing high-frequency noise.
Reference: Standard communication systems: frequency modulation
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