In this paper, we consider secure downlink transmission in a multicell massive multiple-input
multiple-output (MIMO) system where the numbers of base station (BS) antennas, mobile …

This paper considers a multiple-input-multiple-output (MIMO) cognitive wiretap system over
Nakagami-m channels with generalized selection combining (GSC), where confidential …

Cloud computing provides powerful computing ability of mobile devices in the Internet of
Things (IoT) networks. However, the large amounts of data interaction with cloud suffers …

Movable antenna (MA) technology is highly promising for improving communication
performance, due to its advantage of flexibly adjusting positions of antennas to reconfigure …

In this paper, we study a two-phase underlay cognitive relay network, where there exists an
eavesdropper who can overhear the message. The secure data transmission from the …

With the ubiquitous connectivity in internet of vehicles, secure transmission is of vital
importance for intelligent vehicle-to-everything (V2X) communications. However, in order to …

This paper studies the effect of outdated channel state information on relay selection for a
secure amplify‐and‐forward relay network. In the considered system, one of the multiple …

Opportunistic scheduling schemes are investigated for uplink wiretap channels with multiple
asymmetrically located legitimate users (LUs) and eavesdroppers. To exploit multiuser …

Movable antenna (MA) technology, which can reconfigure wireless channels by flexibly
moving antenna positions in a specified region, has great potential for improving …

Demand of minimal hardware requirement and low energy consumption for internet of things
(IoT) has gained the importance of techniques enhancing the physical layer security …