Lookup NU author(s): Huan Cao,
Dr Martin Johnston
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© 2018 IEEE. Polar codes are the first proven capacity-achieving codes for any symmetric binary input discrete memoryless channel (B-DMC) and their has been recent interest in their combination with the popular area of physical layer security. Previous work on error-correcting codes and physical layer security has assumed a wiretap channel where each user experiences Gaussian noise, but this paper presents the first results evaluating the performance of polar codes on wiretap channels where both the intended recipient and eavesdropper experience varying levels of impulsive noise. The impulsive noise has a symmetric alpha-stable probability density function (pdf) and density evolution is employed with knowledge of this pdf to construct optimal polar codes for an impulsive environment. Simulation results confirm that the bit error rate (BER) at the eavesdropper is always 0.5 for all signal-to-noise ratios, thus always ensuring secure communication, and we present the very interesting result where this is still achieved when the main channel is more impulsive than the eavesdropper's channel.
Author(s): Cao H, Mei Z, Johnston M, Goff SL
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 18th International Conference on Communication Technology (ICCT 2018)
Year of Conference: 2018
Online publication date: 03/01/2019
Acceptance date: 02/04/2018
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