165 citations
- Türkiye Bilimsel ve Teknolojik Araştırma KurumuTR12 papers
- Sabancı ÜniversitesiTR5 papers
- Yıldız Technical UniversityTR3 papers
- Akdeniz UniversityTR2 papers
- Chalmers University of TechnologySE2 papers
- Istanbul Technical UniversityTR2 papers
- Koç UniversityTR2 papers
- Max Planck Institute of Microstructure PhysicsDE2 papers
- Max Planck SocietyDE2 papers
- Tübitak National Metrology InstituteTR2 papers
- Ankara UniversityTR1 paper
- Balıkesir UniversityTR1 paper
36 papers
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.…
ORIX: Orchestration of RIS with xApps for Smart Wireless Factory Environments
Sefa Kayraklik, Ali Fuat Sahin, Onur Salan +8
The vision of a smart wireless factory (SWF) demands highly flexible, low-latency, and reliable connectivity that goes beyond conventional wireless solutions. Reconfigurable intell…
N78 Frequency Band Modular RIS Design and Implementation
Sefa Kayraklık, Recep Baş, Hasan Oğuzhan Çalışkan +6
Reconfigurable intelligent surface (RIS), capable of dynamically controlling wireless propagation characteristics using reflecting antenna elements, is a promising technology for e…
RIS Meets O-RAN: A Practical Demonstration of Multi-user RIS Optimization through RIC
Ali Fuat Sahin, Onur Salan, Ibrahim Hokelek +1
Open Radio Access Network (O-RAN) along with artificial intelligence, machine learning, cloud and edge networking, and virtualization are important enablers for designing flexible…
RIS Optimization Algorithms for Urban Wireless Scenarios in Sionna RT
Ahmet Esad Güneşer, Berkay Şekeroğlu, Sefa Kayraklık +4
This paper evaluates the performance of reconfigurable intelligent surface (RIS) optimization algorithms, which utilize channel estimation methods, in ray tracing (RT) simulations…