This letter aims to clarify the impact of channel aging and phase noise on the performance of
intelligent reflecting surface-aided wireless systems. We first model mathematically the …

In the context of cell-free massive multi-input multi-output (CFmMIMO), zero-forcing
precoding (ZFP) is superior in terms of spectral efficiency. However, it suffers from channel …

Intelligent reflecting surface (IRS) is envisioned to become a key technology for the
upcoming six-generation (6G) wireless system due to its potential of reaping high …

This paper focuses on studying orthogonal and non-orthogonal multiple access in intelligent
reflecting surface (IRS)-aided systems. Unlike most prior works assuming continuous phase …

Reconfigurable intelligent surface (RIS) has recently drawn intensive attention due to its
potential of simultaneously realizing high spectral and energy efficiency in a sustainable …

Since reconfigurable intelligent surface (RIS) is considered to be a passive reflector for rate
performance enhancement, a RIS-aided amplify-and-forward (AF) relay network is …

The next-generation wireless technologies, commonly referred to as the sixth generation
(6G), are envisioned to support extreme communications capacity and in particular …

This paper focuses on multi-user downlink signal transmission in a wireless system aided by
multiple reconfigurable intelligent surfaces (RISs). In such a multi-RIS, multi-user, multi …

User experience in mobile communications is vulnerable to worse quality at the cell edge,
which cannot be compensated by enjoying excellent service at the cell center, according to …

Most prior works on intelligent reflecting surface (IRS) merely consider point-to-point
communications, including a single user, for ease of analysis. Nevertheless, a practical …