Physical (PHY) layer security approaches for wireless communications can prevent
eavesdrop** without upper layer data encryption. However, they are hampered by …

The topic of information theoretic security is introduced and the principal results in this area
are reviewed. The basic wire-tap channel model is considered first, and then several specific …

This paper deals with relay selection in cooperative networks with secrecy constraints. The
proposed scheme enables an opportunistic selection of two relay nodes to increase security …

We consider a cooperative wireless network in the presence of one or more eavesdroppers,
and exploit node cooperation for achieving physical (PHY) layer based security. Two …

A wireless network with one source, one destination, one eavesdropper, and multiple
decode-and-forward relays is considered. A two-slot cooperative relaying scheme is …

In this paper, we study opportunistic relay selection in cooperative networks with secrecy
constraints, where a number of eavesdropper nodes may overhear the source message. To …

In this paper, we propose using a wireless-powered friendly jammer to enable secure
communication between a source node and destination node, in the presence of an …

This study deals with opportunistic relay selection in cooperative networks with secrecy
constraints, where an eavesdropper node tries to overhead the source message. Previously …

Cooperative jamming is an approach that has been recently proposed for improving
physical layer based security for wireless networks in the presence of an eavesdropper …

Relay selection is considered to enhance the secrecy of a dual-hop regenerative multi-relay
system with an eavesdropper. Without assuming perfect decoding at the relays, the secrecy …