Yalçın Ata

ORIS-Assisted SWIPT Underwater OWC System With Different Transmission Protocols

Farah Mahdi Al-Sallami, Yalçın Ata, Emna Zedini, Anna Maria Vegni et autres

In Internet of Underwater Things (IoUT) scenarios, power-hungry devices need to periodically harvest energy to be alive. By dynamically controlling and redirecting the optical beam, reconfigurable intelligent surfaces (RIS) can enhance both the energy transfer and information reception processes, thereby improving the …

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Optical Wireless Communication in Atmosphere and Underwater: Statistical Models, Improvement Techniques, and Recent Applications

Yalçın Ata, Farah Mahdi Al-Sallami, Muhsın Caner Gökçe, Anna Maria Vegni et autres

Optical Wireless Communication Systems (OWCSs) are becoming more popular each day, especially after numerous mobile applications are being employed within the concept of Internet of Things (IoT). OWCSs are largely used in both terrestrial and non-terrestrial environments, like underwater, air, and space …

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A novel protocol for STAR-RIS-assisted SWIPT systems with Hybrid Elements

Claudia Leoni, Yalçın Ata, Anna Maria Vegni

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Deep Learning for Dynamic Slant Channel Modeling in Underwater Wireless Optical Communications

Dongling Xu, Xiang Yi, Anna Maria Vegni, Yalçın Ata et autres

Underwater wireless optical communication (UWOC) enables high-speed, low-latency links for the Internet of Underwater Things (IoUT), but remains highly vulnerable to complex and dynamic channel impairments. In practice, slant transmission paths frequently occur due to spatial offsets between underwater sensors and marine …

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Pointing Error Influence on Quantum Key Distribution

Yalçın Ata, Kamran Kıasaleh

Recently, quantum key distribution (QKD) has emerged as a prominent solution to provide secure and reliable communication in atmosphere. This paper investigates the effect of pointing error on the performance of QKD communication systems. The analytical solution of error and sift probabilities, …

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Time Switching-Variable Mode Splitting Protocol for STAR-RIS-Aided SWIPT in NOMA Networks

Yalçın Ata, Anna Maria Vegni

This paper presents a novel transmission protocol for simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) that jointly exploits traditional time switching and mode splitting protocol. The proposed approach, namely time-switching-variable mode splitting (TVM), allows to dynamically allocate STAR-RIS resources (i.e., time …

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Effects of receiver diversity on bit error rate of underwater optical wireless communication systems in weak oceanic turbulence

Muhsın Caner Gökçe, Yahya Baykal, Yalçın Ata

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Deep Learning for Dynamic Slant Channel Modeling in Underwater Wireless Optical Communications

Dongling Xu, Xiang Yi, Anna Maria Vegni, Yalçın Ata et autres

Underwater wireless optical communications (UWOC), with their large bandwidth potential, are a promising solution for the emerging Internet of Underwater Things (IoUT). However, when transmitting data to marine surface vehicles (MSVs) via UWOC links, the signal suffers from multivariate impairments, including seawater …

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Impact of Natural Turbulent Waters on Quantum Key Distribution: Temperature and Salinity Considerations

Yalçın Ata, Kamran Kıasaleh

Quantum key distribution (QKD) has been identified as a viable solution for secure underwater communication. This study aims to characterize the impact of natural turbulent waters on systems. The performance of QKD systems is analyzed in terms of the quantum bit error …

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Performance of quantum key distribution in free-space optical systems under various atmospheric channel effects

Yalçın Ata, Kamran Kıasaleh

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Statistical Study on Depth-Dependent Intensity Fluctuations and Performance Evaluation for Vertical Underwater Optical Communication Systems

Dongling Xu, Xiang Yi, Yalçın Ata, Mingjian Cheng et autres

In this paper, we perform the statistical modeling for turbulence-induced intensity fluctuations with optical waves propagating in turbulent ocean vertically. To accurately model the turbulence-induced optical wavefront distortion in vertical direction, we construct the wave optics simulation (WOS). In WOS procedure, we …

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Reflect-and-Amplify: A Novel SWIPT Technique Through Hybrid Active/Passive RIS

Yalçın Ata, Emna Zedini, Anna Maria Vegni, Mohamed‐Slim Alouini

This article presents a novel technique for the simultaneous wireless information and power transfer (SWIPT) toward low-power devices, by means of reconfigurable intelligent surfaces (RISs). Our approach is based on a Reflect-and-Amplify protocol meaning that, based on the RIS beam-steering functionality and …

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