Results 81 to 90 of about 3,484 (213)

Diffractive Optical Neural Networks: Pathways Toward Intelligent and Scalable Photonic Computing

Nanophotonics, Volume 15, Issue 8, 24 April 2026.
Diffractive optical neural networks (DONNs) are emerging as a transformative paradigm for photonic computing, offering massive parallelism, ultrafast inference, and passive low‐power operation. This review traces the evolution of DONNs from free‐space to on‐chip implementations, highlights advances in reconfigurability and multidimensional modulation ...
Yufei Wang, Mingheng Zhong, Kun Liao, Quan Sun, Xiaoyong Hu, Qihuang Gong   +5 more
wiley   +1 more source

Enhanced Physical Layer Secret Key Generation via Beyond-Diagonal Reconfigurable Intelligent Surfaces in Multi-User MIMO Systems

Journal of Engineering
Physical Layer Key Generation (PLKG) provides a promising approach for establishing secure cryptographic keys between legitimate parties. However, in static and quasi-static environments, the key generation rate is significantly limited due to the low ...
Mina Fadhil Hasan, Aqiel Niama Almamori
doaj   +1 more source

Reconfigurable Intelligent Surface System Level Simulations for Industry Standards

IEEE Communications Magazine
Reconfigurable intelligent surface (RIS) is an emerging technology for wireless communications. In this paper, extensive system level simulations are conducted for analyzing the performance of multi-RIS and multi-base-station (BS) scenarios, by considering typical settings for industry standards.
Yifei Yuan 0003, Yuhong Huang, Xin Su 0010, Boyang Duan, Nan Hu, Marco Di Renzo   +5 more
openaire   +2 more sources

A Probability‐Aware AI Framework for Reliable Anti‐Jamming Communication

CAAI Transactions on Intelligence Technology, Volume 11, Issue 2, Page 349-366, April 2026.
ABSTRACT Adversarial jamming attacks have increased on communication systems, causing distortion and threatening transmissions. Typical attacks rely on traditional, well‐defined cryptographic protocols and frequency‐hopping techniques. Nevertheless, these techniques become vulnerable when facing intelligent jammers.
Tawfeeq Shawly, Ahmed A. Alsheikhy
wiley   +1 more source

RIS partitioning and UAV selection for age-of-information optimization in RIS-assisted UAV communications

ICT Express
Reconfigurable intelligent surface (RIS) has been attracted great attention because it can enhance the capacity and coverage of wireless communication systems.
Juseoung Lee, Jaewoo So
doaj   +1 more source

Reconfigurable Intelligent Surface Assisted NOMA Empowered Integrated Sensing and Communication

, 2022
This paper exploits the potential of reconfigurable intelligent surface (RIS) to improve radar sensing in a non-orthogonal multiple access (NOMA) empowered integrated sensing and communication (NOMA-ISAC) network. The objective is to maximize the minimum
Zuo, Jiakuo, Liu, Yuanwei
core   +1 more source

Reconfigurable Intelligent Surface Assisted Semantic Communication Systems

, 2023
Semantic communication, which focuses on conveying the meaning of information rather than exact bit reconstruction, has gained considerable attention in recent years.
Pan, Haoyuan, Lok, Tat-Ming, Shi, Jiajia, Chan, Tse-Tin   +3 more
core  

Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA

2025 5th International Conference on Electrical, Computer and Energy Technologies (ICECET)
This paper proposes power allocation and the number of reconfigurable intelligent surfaces (RIS) elements optimisation in a RIS-assisted rate splitting multiple access (RSMA) system. The optimised RIS-RSMA (ORIS-RSMA) method determines the optimal number of RIS elements and the power allocation factors for both common and private parts of a message ...
Abdullah Qayyum, Maziar M. Nekovee
openaire   +2 more sources

Optical STAR-RIS-Aided VLC Systems: RSMA Versus NOMA

IEEE Open Journal of the Communications Society
A critical concern within the realm of visible light communications (VLC) pertains to enhancing system data rate, particularly in scenarios where the direct line-of-sight (LoS) connection is obstructed by obstacles.
Omar Maraqa, Sylvester Aboagye, Telex M. N. Ngatched   +2 more
doaj   +1 more source

Reconfigurable Intelligent Surface (RIS)-Assisted Entanglement Distribution in FSO Quantum Networks

IEEE Transactions on Wireless Communications
Quantum networks (QNs) relying on free-space optical (FSO) quantum channels can support quantum applications in environments wherein establishing an optical fiber infrastructure is challenging and costly. However, FSO-based QNs require a clear line-of-sight (LoS) between users, which is challenging due to blockages and natural obstacles. In this paper,
Mahdi Chehimi, Mohamed Elhattab, Walid Saad 0001, Gayane Vardoyan, Nitish K. Panigrahy, Chadi Assi, Don Towsley   +6 more
openaire   +2 more sources