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  • Physical Layer: Line Coding and Signal Transmission
  • A signal of power 50 W is mixed with a noise of 2 mW. Cal...
Multiple choice

A signal of power 50 W is mixed with a noise of 2 mW. Calculate the SNR ratio in dB.

  1. 4.39

  2. 16.97

  3. 25,000

  4. 43.98

  5. None of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SNRdB = 10 log 10 (Average Signal Power / verage Noise Power ) =  10 log 10 (50,000 mW / 2 mW ) =  10 log 10 25,000=43.979 dB.

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