Owing to the breakthrough of artificial meta-materials, the emergence and evolution of
reconfigurable intelligent surface (RIS) have drawn a novel blueprint for the development of …

We investigate the problem of reconfigurable intelligent surface (RIS)-aided near-field
localization of a user equipment (UE) served by a base station (BS) under phase-dependent …

The linear minimal mean square error estimator for active reconfigurable intelligent surface
(RIS)-aided wireless systems is formulated. Furthermore, based on the moment-matching …

Reconfigurable intelligent surfaces (RISs) hold great potential as one of the key
technological enablers for beyond-5G wireless networks, improving localization and …

In 5G/6G wireless systems, reconfigurable intelligent surfaces (RIS) can play a role as a
passive anchor to enable and enhance localization in various scenarios. However, most …

We introduce a novel deep reinforcement learning (DRL) approach to jointly optimize
transmit beamforming and reconfigurable intelligent surface (RIS) phase shifts in a multiuser …

Reconfigurable intelligent surface (RIS) or intelligent reflecting surface (IRS) has been an
attractive technology for future wireless communication and sensing systems. However, in …

Reconfigurable intelligent surfaces (RISs) are seen as a key enabler low-cost and energy-
efficient technology for 6G radio communication and localization. In this paper, we aim to …

In this paper, we address the critical aspect of hardware ageing effects in reconfigurable
intelligent surfaces (RISs), whereby the problem of extending the RIS's life cycle under the …

Intelligent reflecting surface (IRS) is a promising technique that enhances wireless system
performance by reconfiguring signal propagation. Further, ultra-wideband (UWB) technology …