In this letter, we investigate the discrete phase shift design of the intelligent reflecting surface
(IRS) in a time-division duplexing (TDD) multi-user multiple-input-multiple-output (MIMO) …

The deep reinforcement learning (DRL)-based deep deterministic policy gradient (DDPG)
framework is proposed to solve the joint optimization of the IRS phase-shift matrix and the …

This letter investigates the intelligent reflecting surface (IRS)-aided multiple-input single-
output wireless transmission system. Particularly, the optimization of the passive phase shift …

Intelligent reflecting surface (IRS)-assisted multiple-input multiple-output (MIMO) systems
are foreseen as key enablers of beyond 5G (B5G) and 6G wireless communications. By …

This letter investigates an intelligent reflecting surfaces (IRS)-enhanced network from
spectral efficiency enhancement point of view for downlink multi-user (MU) multi-input-single …

Reconfigurable intelligent surface (RIS) has entered the public consciousness as a
promising technology for enhancing the performance of future wireless communication …

In cell-free multiple input multiple output (MIMO) networks, multiple base stations (BSs)
collaborate to achieve high spectral efficiency. Nevertheless, high penetration loss due to …

In this paper, we investigate the effect of cooperative double Intelligent reflecting surfaces
(IRS) in improving the energy efficiency (EE) of a multi-user multiple-input multiple-output …

As a technology for 6G wireless communications, Intelligent Reflecting Surfaces (IRSs) are
considered as a promising solution to boost the network capacity, spectrum and coverage in …

The application of intelligent reflecting surface (IRS) depends on the knowledge of channel
state information (CSI), and has been hindered by the heavy overhead of channel training …