This paper addresses joint transceiver design for secure downlink communications over a
multiple-input multiple-output relay system in the presence of multiple legitimate users and …

Full-duplex (FD) jamming transceivers recently have been shown to enhance the
information security of wireless communication systems by simultaneously transmitting …

Intelligent reflecting surface (IRS) provides an energy-efficient way to construct channels
and enables the joint transceiver and channel design. In this paper, we consider the …

We consider two fundamental multi-user channel models: the multiple-input multiple-output
(MIMO) wiretap channel with one helper (WTH) and the MIMO multiple access wiretap (MAC …

In this letter, we consider the problem of secure communication in the downlink of a multi-
cell multiple-input multiple-output (MIMO) system under imperfect channel state information …

In this paper, we consider a multi-cell MISO downlink, where a multi-antenna base station
(BS) sends messages to its intended user, while a passive eavesdropper tries to intercept …

This paper addresses the establishment of secure communication links between Alice and
Bob in the presence of an eavesdropper (Eve). The proposed scenario assumes: 1) …

This paper investigates robust beamforming techniques for a multiple-input-single-output
(MISO) secrecy transmission with a cooperative jammer by incorporating two different types …

The availability of multiple antennas in multiuser networks is akin to a double-edged sword
from the security point of view: the enhanced transmission quality of the legitimate users is …

Wireless physical-layer security is an emerging field of research aiming at preventing
eavesdropping in an open wireless medium. In this paper, we propose a novel waveform …