In this paper, the achievable secrecy rate of a relay-assisted massive multiple-input multiple-
output (MIMO) downlink is investigated in the presence of a multi-antenna active/passive …

An overview over secure communication in massive multiple-input multiple-output (MIMO)
systems is presented. A massive MIMO base-station serves multiple user nodes by …

The advanced manufacturing industry (AMI) faces many unique challenges from the cyber-
physical domain. Security threats are originated from two integral parts: software and …

In a time-division duplex (TDD) multiple antenna system, the channel state information can
be estimated using reverse training. A pilot spoofing attack occurs when during the training …

In this letter, we investigate secure transmission for multi-cell multi-user massive multiple-
input multiple-output systems with an active eavesdropper. During the uplink (UL) training …

In multiple antenna systems employing time-division duplexing, spatial precoder design at
the base station (BS) leverages channel state information acquired through uplink pilot …

In this paper, we study the design of secure communication for time-division duplex multi-
cell multi-user massive multiple-input-multiple-output (MIMO) systems with active …

In fifth generation (5G) new radio (NR), the demodulation reference signal (DMRS) is
employed for channel estimation as part of coherent demodulation of the physical uplink …

In this paper, we study a novel approach to eavesdrop the messages of suspicious users for
a surveillance purpose. In particular, we consider a scenario in which the legitimate monitor …

Proactive eavesdropping is an effective method for government to monitor suspicious users
who are deemed to misuse communication systems for illegal activities. In this paper …