Paper Info
Title
Secrecy Analysis of Modify-and-Forward Relaying With Relay Selection
Abstract
This paper investigates the physical-layer security of the modify-and-forward (MF) protocol in multi-relay and multi-eavesdropper networks. Three relay selection critera are developed according to the channel state information (CSI) acquisition. Criterion I requires the CSI of all main channels for relay selection. Criteria II and III rely only on the CSI of the source-relay and relay-destination channels, respectively. We derive the exact secrecy outage probability (SOP), probability of nonzero secrecy capacity, and the ergodic secrecy rate in the closed forms. The <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\epsilon$</tex-math></inline-formula> -outage secrecy capacity is also evaluated. Asymptotic analysis of the SOP explicitly reveals that the secrecy diversity order of criterion I depends on the total number of relays, whereas those of criteria II and III are 2 and 1, respectively. The probability of nonzero secrecy capacity asymptotically decreases with the SNR of the wiretap channel as the eavesdropper is close to the source and relays. Criterion I is always superior to criteria II and III in terms of the ergodic secrecy rate and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\epsilon$</tex-math></inline-formula> -outage secrecy capacity. Simulations results also demonstrated that the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\epsilon$</tex-math></inline-formula> -outage secrecy capacity deteriorates as the SNR of the eavesdropper's channel increases.
Year
DOI
Venue
2019
10.1109/TVT.2018.2885807
IEEE Transactions on Vehicular Technology
Keywords
Field
DocType
Relays,Probability,Fading channels,Capacity planning,Security,Power system reliability,Signal to noise ratio
Topology,Computer science,Secrecy,Ergodic theory,Signal-to-noise ratio,Communication channel,Computer network,Capacity planning,Asymptotic analysis,Relay,Channel state information
Journal
Volume
Issue
ISSN
68
2
0018-9545
Citations 
PageRank 
References 
1
0.34
0
Authors
1
Name
Order
Citations
PageRank
Shao-I Chu1389.36