Reconfigurable intelligent surface (RIS)-aided symbiotic active/passive transmission is a
promising communication paradigm, which is able to improve the propagation environment …

Active reconfigurable intelligent surfaces (RISs) have recently been proposed to
compensate for the severe multiplicative fading effect of conventional passive RIS-aided …

Due to the passive nature of reconfigurable intelligent surface (RIS) and a large number of
users, it is very challenging to estimate the cascaded base station (BS)-RIS-user channel …

In this study, a novel index modulation-based communication system is proposed by
combining the recently popular code index modulation-spread spectrum (CIM-SS) and …

This paper studies the reconfigurable intelligent surface (RIS)-enhanced channel estimation
and device activity detection technique for the next generation massive internet of things …

To provide sustainable energy support while meeting the demands for serving a rapidly
increasing number of devices, in this paper, we propose a new Reconfigurable intelligent …

Consider a communication system in which a single antenna user equipment exchanges
information with a multi-antenna base station via a reconfigurable intelligent surface (RIS) in …

Reconfigurable intelligent surface (RIS) assisted dual-function radar communications
(DFRC) system is a promising integrated sensing and communication (ISAC) technology for …

This paper investigates the integration of a reconfigurable intelligent surface (RIS) into a
secure multiuser massive multiple-input multiple-output (MIMO) system in the presence of …

It has been proved that a long-range (LoRa) system can achieve long-distance and low-
power transmission. However, the performance of LoRa systems can be severely degraded …