Multiple choice

A communication channel with AWGN operating at a signal to noise ration SNR >> 1 and bandwidth B has capacity C1. If the SNR is doubled keeping constant, the resulting capacity C2 is given by

  1. C2 $\approx$ 2C1
  2. C2 $\approx$ C1 + B
  3. C2 $\approx$ C1 + 2B
  4. C2 $\approx$ C1 + 0.3 B
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B Correct answer
Explanation

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