Integrated ultra-massive multiple-input multiple-output (UM-MIMO) and intelligent reflecting
surface (IRS) systems are promising for 6G and beyond Terahertz (0.1-10 THz) …

Reconfigurable intelligent surface (RIS) is a promising technology that can reshape the
electromagnetic environment in wireless networks, offering various possibilities for …

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 …

Physical layer key generation (PLKG) leverages wireless channels to produce secret keys
for legitimate users. However, in millimetre-wave (mmWave) frequency bands, the presence …

A reconfigurable intelligent surface (RIS)-assisted transmission framework is proposed for
millimeter wave (mmWave) multiple-input multiple-output systems having finite-alphabet …

Extremely large-scale array (XL-array) communications can significantly improve the
spectral efficiency and spatial resolution, and has great potential in next-generation mobile …

The reconfigurable intelligent surface (RIS) is useful to effectively improve the coverage and
data rate of end-to-end communications. In contrast to the well-studied coverage-extension …

For 6G communications, the Ultra Massive Multiple Input Multiple Output (UM-MIMO)
systems with Intelligent Reflecting Surface (IRS) assistance are capable since they can …

Reconfigurable intelligent surface (RIS) has attracted extensive attention in recent years.
However, most research focuses on the scenario of the narrowband and/or instantaneous …

This work considers two-user broadcast channel aided by reconfigurable intelligent surface
(RIS) with discrete phase shift. The sum rate is maximized where the precoding vectors and …