In this paper, we examine the use of a friendly full-duplex (FD) relay to increase the secrecy
rate over a fading channel between the legitimate source and the destination in the …

This paper investigates the relay selection (RS) problem for multi-hop full-duplex relay
networks where multiple source-destination (SD) pairs compete for the same pool of relays …

Full-duplex communication enables simultaneous transmission from both ends of a
communication link, thereby promising significant performance gains. Generally, it has been …

This paper investigates the physical-layer security issue of an amplify-and-forward (AF) relay
network. We propose a joint cooperative beamforming (CB) and cooperative jamming (CJ) …

In this letter, we develop a novel layered physical layer security model to secure multiple
messages simultaneously. It maintains a hierarchical security structure, in which each …

This letter studies the physical-layer security of a full-duplex (FD) multiple-input multiple-
output relay channel. A legitimate source node (Alice) communicates with her destination …

In this paper, we study the problem of half-duplex active eavesdropping in fast-fading
channels. The active eavesdropper is a more powerful adversary than the classical …

As the number of connected devices is exponentially increasing, security in Internet of
Things (IoT) networks presents a major challenge. Accordingly, in this work we investigate …

Transmit beamforming and artificial noise-based methods have been widely employed to
achieve physical-layer (PHY) security. However, these approaches may fail to provide …

A downlink single-input single-output non-orthogonal multiple access setting is considered,
in which a base station (BS) is communicating with two legitimate users in two possible …