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New Result on the Feedback Capacity of the Action-Dependent Dirty Paper Wiretap Channel
- Source :
- Entropy, Volume 23, Issue 8, Entropy, Vol 23, Iss 929, p 929 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- The Gaussian wiretap channel with noncausal state interference available at the transmitter, which is also called the dirty paper wiretap channel (DP-WTC), has been extensively studied in the literature. Recently, it has been shown that taking actions on the corrupted state interference of the DP-WTC (also called the action-dependent DP-WTC) helps to increase the secrecy capacity of the DP-WTC. Subsequently, it has been shown that channel feedback further increases the secrecy capacity of the action-dependent DP-WTC (AD-DP-WTC), and a sub-optimal feedback scheme is proposed for this feedback model. In this paper, a two-step hybrid scheme and a corresponding new lower bound on the secrecy capacity of the AD-DP-WTC with noiseless feedback are proposed. The proposed new lower bound is shown to be optimal (achieving the secrecy capacity) and tighter than the existing one in the literature for some cases, and the results of this paper are further explained via numerical examples.
- Subjects :
- Computer science
Science
QC1-999
Gaussian
0211 other engineering and technologies
General Physics and Astronomy
02 engineering and technology
Astrophysics
Interference (wave propagation)
Upper and lower bounds
Article
symbols.namesake
action encoder
wiretap channel
Control theory
Secrecy
0202 electrical engineering, electronic engineering, information engineering
021110 strategic, defence & security studies
Physics
Transmitter
020206 networking & telecommunications
channel feedback
Action (physics)
QB460-466
symbols
intelligent reflecting surfaces
State (computer science)
dirty paper channel
Communication channel
Subjects
Details
- Language :
- English
- ISSN :
- 10994300
- Database :
- OpenAIRE
- Journal :
- Entropy
- Accession number :
- edsair.doi.dedup.....a71a888e6aa3177247779f432abcb77b
- Full Text :
- https://doi.org/10.3390/e23080929