In this paper, we consider secure communications in a multi-cell downlink multi-antenna
system, where each multi-antenna base station (BS) sends confidential messages to one …

This paper comprehensively studies the physical layer security in frequency division duplex
multi-antenna cellular systems, where the multi-antenna base stations (BSs), legitimate …

Security and privacy have become increasingly critical demands in wireless networks,
which, however, are particularly susceptible to eavesdropping attacks due to the broadcast …

We study secure multi-antenna transmission with limited feedback from the intended
receiver and no feedback from the malicious eavesdropper. Our system uses the artificial …

In this paper, we study the secure multi-antenna transmission with artificial noise (AN) under
slow fading channels coexisting with randomly located eavesdroppers. We provide a …

In this paper, we consider a multiuser downlink wiretap network consisting of one base
station (BS) equipped with AA antennas, NB single-antenna legitimate users, and NE single …

We consider a low-complexity transceiver design for secure communications of a multiuser
multi-antenna system with an external multi-antenna eavesdropper. We propose to employ …

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 investigate the performance of secure cellular multiuser two-way amplify-
and-forward relay networks, wherein one N a-antenna base station (BS) exchanges …

Conventional beamforming transmission techniques can enhance physical layer secrecy
performance while requiring the full channel state information (CSI) of legitimate users and …