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Information-Theoretic Secret-Key Agreement: The Asymptotically Tight Relation Between the Secret-Key Rate and the Channel Quality Ratio

Information-Theoretic • September 25th, 2018

• Contract Type
  Information-Theoretic
• Filed
  September 25th, 2018

Intuitively, the entropy measures the uncertainty about a given random variable. In fact, a finite random variable X with range X satisfies 0 ≤ H(X) ≤ log|X | with equality in the lower bound if and only if PX(x) = 1 for some x ∈ X , and with equality in the upper bound if and only if X is uniform over X . We call