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Finite-Blocklength Bounds for Wiretap Channels (1601.06055v1)
Published 22 Jan 2016 in cs.IT and math.IT
Abstract: This paper investigates the maximal secrecy rate over a wiretap channel subject to reliability and secrecy constraints at a given blocklength. New achievability and converse bounds are derived, which are shown to be tighter than existing bounds. The bounds also lead to the tightest second-order coding rate for discrete memoryless and Gaussian wiretap channels.