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Communication SystemsNoise in Communication Systems

If a system has input SNR of 30 dB and output SNR of 24 dB, its noise figure is?

  • A3 dB
  • B6 dB
  • C24 dB
  • D54 dB
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Correct Answer: B. 6 dB
Explanation: Noise figure in dB is SNRin(dB)-SNRout(dB)=30-24=6 dB.
Reference: Standard communication systems: noise figure from SNR
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