The wiretap channel [1] describes a communication problem where the communication between Alice to Bob needs not only be reliable but also kept secret from an eavesdropper Eve. The additional secrecy constraint imposes new challenges on code design and may require new tools such as stochastic encoding to achieve the secrecy capacity [1], [2]. The student will read and understand the concept of secrecy capacity, and review practical coding schemes for the wiretap channel proposed in literature. The student will compare the different approaches and discuss the tradeoffs that appear.

[1] A. D. Wyner, “The wire-tap channel,” Bell Syst. Tech. J., vol. 54, no. 8,  pp. 1355–1387, Oct. 1975.
[2] I. Csiszár and J. Körner, “Broadcast channels with confidential messages,” IEEE Trans. Inf. Theory, vol. IT-24, no. 3, pp. 339–348, May 1978.

Prerequisites

Develop an iterative detection and decoding scheme for XPM compensation in nonlinear WDM fiber-optic links.

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We investigate code construction algorithms for SC list decoding of polar codes [1] based on methods like [2].

• [1] https://doi.org/10.1109/TIT.2015.2410251
• [2] https://doi.org/10.1109/TCOMM.2021.3120274