As an emerging system architecture, heterogeneous cloud radio access networks (H-
CRANs) can improve system capacity, enlarge coverage, and enhance energy/spectral …

Drawing inspiration from the advantages of intelligent reflecting surfaces (IRS) in wireless
networks, this paper presents a novel design for intelligent omni surface (IOS) enabled …

The availability of perfect channel state information is assumed in current ambient-
backscatter studies. However, the channel estimation problem for ambient backscatter is …

This paper investigates an intelligent reflecting surface (IRS) aided secure wireless powered
communication network (WPCN), where a transmitter first harvests energy from a power …

In this paper, we investigate the physical-layer security of cooperative communications
relying on multiple two-way relays using the decode-and-forward (DF) protocol in the …

The expected rise of small devices in the Internet of Things (IoT) require these devices to
operate without any power interruption. The replacement and recharging of batteries in …

Ambient backscatter devices (tags and readers) use existing radio frequency (RF) signals to
transmit data. Most prior works consider single-antenna tags, but this paper investigates the …

In this paper, we design a channel tracking method for massive multiple-input multiple-
output systems under both time-varying and spatial-varying circumstances. By exploiting the …

We consider a cooperative wireless network comprised of a source, a destination, and
multiple relays operating in the presence of an eavesdropper, which attempts to tap the …

Free space optical (FSO) transmission has emerged as a key candidate technology for 6G to
expand new spectrum and improve network capacity due to its advantages of large …