Optimal Inputs for Some Classes of Degraded Wiretap Channels | Zendy

Alex Dytso | Zendy; Malcolm Egan | Zendy; Samir M. Perlaza | Zendy; H. Vincent Poor | Zendy; Shlomo Shamai Shitz | Zendy

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Optimal Inputs for Some Classes of Degraded Wiretap Channels

Author(s) -

Alex Dytso,

Malcolm Egan,

Samir M. Perlaza,

H. Vincent Poor,

Shlomo Shamai Shitz

Publication year - 2019

Publication title -

2018 ieee information theory workshop (itw)

Language(s) - English

Resource type - Conference proceedings

ISBN - 978-1-5386-3599-5

DOI - 10.1109/itw.2018.8613368

Subject(s) - communication, networking and broadcast technologies , computing and processing , engineering profession

In this paper, an analysis of an input distribution that achieves the secrecy capacity of a general degraded additive noise wiretap channel is presented. In particular, using convex optimization methods, an input distribution that achieves the secrecy capacity is characterized by conditions expressed in terms of integral equations. The new conditions are used to study the structure of the optimal input distribution for three different additive noise cases: vector Gaussian; scalar Cauchy; and scalar exponential.

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