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Communication SystemsDigital Modulation

In frequency-shift keying (FSK), binary symbols are commonly represented by?

  • ADifferent carrier frequencies
  • BDifferent antenna resistances
  • COnly different DC supply voltages
  • DDifferent sampling periods with no carrier
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Correct Answer: A. Different carrier frequencies
Explanation: FSK maps different digital symbols to different carrier frequencies.
Reference: Standard communication systems: digital modulation
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