33 citations · 64 across the 15 of their papers we have counts for
6 papers · 1 filter
CII: Novel CSI-RS Metric for Joint Precoder and RIS Reporting in Multi-User NextG Networks
Ali Fuat Sahin, Sefa Kayraklik, Ali Gorcin +3
While reconfigurable intelligent surfaces (RISs) are among the key enablers for next-generation (NextG) wireless networks, efficient feedback reporting for joint base station (BS)…
A Novel Stripe-based RIS Optimization for UAV Communications and Sensing in Low-Altitude Wireless Networks
Burak Ahmet Celebi, Sefa Kayraklik, Onur Salan +3
Low-altitude wireless networks (LAWN) envision a reconfigurable 3D network capable of supporting mission-critical aerial operations. This paper presents a reconfigurable intelligen…
RIS-Assisted Secure Transmission with Artificial Noise: Element Allocation and Measurements
Mustafa Furkan Beker, Ahmet Muaz Aktas, Sefa Kayraklik +1
Physical layer security in reconfigurable intelligent surface (RIS)-assisted wireless systems can be improved through coordinated control of signal transmission and RIS configurati…
Experimental Performance of a 5G N78 Reconfigurable Intelligent Surface: From Controlled Measurements to Commercial Network Deployment
Sefa Kayraklık, Samed Keşir, Batuhan Kaplan +3
This paper presents a real-world experimental analysis of a modular reconfigurable intelligent surface (RIS) prototype designed to operate in the 5G N78 band. Unlike most RIS studi…
A Novel CSI-RS Reporting Scheme for RIS Optimization in O-RAN-based NextG Networks
Ali Fuat Sahin, Sefa Kayraklik, Ali Gorcin +3
Reconfigurable intelligent surface (RIS) technology is a promising enabler for next-generation (NextG) wireless systems, capable of dynamically shaping the propagation environment.…
Ray Tracing-Enabled Digital Twin for RIS Phase Optimization: Implementation and Experimental Validation
Ömer Lütfü Karakelle, Sefa Kayraklık, İbrahim Hökelek +2
Determining the optimal phase configurations of reconfigurable intelligent surface (RIS) elements typically requires complex channel estimation procedures with high pilot overhead,…