Paper Info
Title
Enhancing physical layer security via channel feedback: a survey.
Abstract
Physical layer security (PLS), which is based on information-theoretic principles of message confidentiality, has attracted considerable attention in recent years. This paper provides a comprehensive survey of using channel feedback (CF) to enhance the quality of PLS of various communication models. To be specific, the survey starts from the secret key-based CF scheme and its variations for the wiretap channel (WTC) and other communication models. Then, for the WTC and its generalized models, an improved feedback scheme and its variations are respectively introduced, where the improved scheme combines the secret key-based CF scheme with the Wyner-Ziv scheme for source coding with side information. It has been shown that these improved schemes perform better than the original secret key-based schemes for several cases. Next, the Schalkwijk-Kailath (SK) feedback scheme and its variations are introduced, which are optimal for the Gaussian WTC and its variations. Finally, the already existing CF schemes are summarized and the future challenges of using CF to enhance PLS are discussed.
Year
DOI
Venue
2020
10.1186/s13638-020-01673-w
EURASIP Journal on Wireless Communications and Networking
Keywords
DocType
Volume
Channel feedback, Physical layer security, Wiretap channel
Journal
2020
Issue
ISSN
Citations 
1
1687-1499
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Bin Dai101.69
Chong Li201.01
Yingbin Liang31646147.64
H. Vincent Poor4202.28
Shlomo Shamai54531410.89