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Communication SystemsInformation Theory

For a discrete memoryless channel, channel capacity is the maximum of mutual information I(X;Y) over?

  • AInput probability distributions
  • BCarrier frequencies only
  • CReceiver temperatures only
  • DSampling phases only
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Correct Answer: A. Input probability distributions
Explanation: Channel capacity is obtained by maximizing the input-output mutual information over permissible input distributions.
Reference: Standard communication systems: channel capacity definition
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