42 citations · 200 across the 18 of their papers we have counts for
19 papers
Flip-KLJN: Random Resistance Flipping for Noise-Driven Secure Communication
Recep Akif Tasci, Ibrahim Yildirim, Ertugrul Basar
The information-theoretically (unconditionally) secure Kirchhoff-law-Johnson-noise (KLJN) bit exchange protocol uses two identical resistor pairs with high (H) and low (L) resistan…
Spider RIS: Mobilizing Intelligent Surfaces for Enhanced Wireless Communications
Ibrahim Yildirim, Mobeen Mahmood, Ertugrul Basar +1
In this study, we introduce Spider RIS technology, which offers an innovative solution to the challenges encountered in movable antennas (MAs) and unmanned aerial vehicle (UAV)-ena…
Plug-In RIS: A Novel Approach to Fully Passive Reconfigurable Intelligent Surfaces
Mahmoud Raeisi, Ibrahim Yildirim, Mehmet Cagri Ilter +2
This paper presents a promising design concept for reconfigurable intelligent surfaces (RISs), named plug-in RIS, wherein the RIS is plugged into an appropriate position in the env…
Reconfigurable Intelligent Surface Deployments for Mars: Communication and Localization Across Diverse Terrains
Enes Koktas, Recep A. Tasci, Ibrahim Yildirim +1
Space exploration has witnessed a steady increase since the 1960s, with Mars playing a significant role in our quest for further knowledge. As the ambition to colonize Mars becomes…
Practical Implementation of RIS-Aided Spectrum Sensing: A Deep Learning-Based Solution
Sefa Kayraklik, Ibrahim Yildirim, Ertugrul Basar +2
This paper presents reconfigurable intelligent surface (RIS)-aided deep learning (DL)-based spectrum sensing for next-generation cognitive radios. To that end, the secondary user (…
Antenna Array Structures for Enhanced Cluster Index Modulation
Mahmoud Raeisi, Asil Koc, Ibrahim Yildirim +2
This paper investigates the effect of various antenna array structures, i.e., uniform linear array (ULA), uniform rectangular array (URA), uniform circular array (UCA), and concent…
Cluster Index Modulation for Reconfigurable Intelligent Surface-Assisted mmWave Massive MIMO
Mahmoud Raeisi, Asil Koc, Ibrahim Yildirim +2
In this paper, we propose a transmission mechanism for a reconfigurable intelligent surface (RIS)-assisted millimeter wave (mmWave) system based on cluster index modulation (CIM),…
Indoor Coverage Enhancement for RIS-Assisted Communication Systems: Practical Measurements and Efficient Grouping
Sefa Kayraklık, Ibrahim Yildirim, Yarkın Gevez +2
Reconfigurable intelligent surface (RIS)-empowered communications represent exciting prospects as one of the promising technologies capable of meeting the requirements of the sixth…
RIS-Aided Angular-Based Hybrid Beamforming Design in mmWave Massive MIMO Systems
Ibrahim Yildirim, Asil Koc, Ertugrul Basar +1
This paper proposes a reconfigurable intelligent surface (RIS)-aided and angular-based hybrid beamforming (AB-HBF) technique for the millimeter wave (mmWave) massive multiple-input…
Channel Modeling in RIS-Empowered Wireless Communications
Ibrahim Yildirim, Ertugrul Basar
One of the most critical aspects of enabling next-generation wireless technologies is developing an accurate and consistent channel model to be validated effectively with the help…
Physical Channel Modeling for RIS-Empowered Wireless Networks in Sub-6 GHz Bands
Fatih Kilinc, Ibrahim Yildirim, Ertugrul Basar
Reconfigurable intelligent surface (RIS)-assisted communications is one of the promising candidates for next generation wireless networks by controlling the propagation environment…
Over-the-Air Equalization with Reconfigurable Intelligent Surfaces
Emre Arslan, Ibrahim Yildirim, Fatih Kilinc +1
Reconfigurable intelligent surface (RIS)-empowered communications is on the rise and is a promising technology envisioned to aid in 6G and beyond wireless communication networks. R…
Index Modulation Based Coordinate Interleaved Orthogonal Design for Secure Communications
Burak Ozpoyraz, Ibrahim Yildirim, Ertugrul Basar
In this paper, we propose a physical layer security scheme that exploits a novel index modulation (IM) technique for coordinate interleaved orthogonal designs (CIOD). Utilizing the…
Hybrid RIS-Empowered Reflection and Decode-and-Forward Relaying for Coverage Extension
Ibrahim Yildirim, Fatih Kilinc, Ertugrul Basar +1
In this letter, we introduce two hybrid transmission schemes combining a passive reconfigurable intelligent surface (RIS) with decode-and-forward relaying in a synergistic manner.…
Reconfigurable Intelligent Surfaces for Future Wireless Networks: A Channel Modeling Perspective
E. Basar, I. Yildirim
While the researchers have set their sights on future wireless networks of 2030, communications through reconfigurable intelligent surfaces (RISs) appears as one of the potential e…
Indoor and Outdoor Physical Channel Modeling and Efficient Positioning for Reconfigurable Intelligent Surfaces in mmWave Bands
E. Basar, I. Yildirim, F. Kilinc
Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new degree of fr…
SimRIS Channel Simulator for Reconfigurable Intelligent Surface-Empowered Communication Systems
E. Basar, I. Yildirim
Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new way to optim…
Coordinate Interleaved Orthogonal Design with Media-Based Modulation
I. Yildirim, E. Basar, I. Altunbas
In this work, we propose a new multiple-input multiple-output (MIMO) concept, which is called coordinate interleaved orthogonal design with media-based modulation (CIOD-MBM). The p…
Modeling and Analysis of Reconfigurable Intelligent Surfaces for Indoor and Outdoor Applications in Future Wireless Networks
I. Yildirim, A. Uyrus, E. Basar
Reconfigurable intelligent surface (RIS)-empowered communication is one of the promising 6G technologies that allows the conversion of the wireless channel into an intelligent tran…