Results 101 to 110 of about 5,532 (201)

Inkjet printed intelligent reflecting surface (IRS) for indoor applications

A passive, low-cost, paper-based intelligent reflecting surface (IRS) is designed to reflect a signal in a desired direction to overcome non-line-of-sight scenarios in indoor environments. The IRS is fabricated using conductive silver ink printed on a paper with a specific nanoparticle arrangement, yielding a cost effective paper-based IRS that can ...
Takimoto, Kairi, Nakamura, Kazutomo, Njogu, Peter, Suzuki, Kota, Sugimoto, Masato, Fathnan, Ashif, Kondo, Takashi, Mori, Masayuki, Anzai, Daisuke, Wakatsuchi, Hiroki   +9 more
openaire   +1 more source

DRL-Based IRS-Assisted Secure Hybrid Visible Light and mmWave Communications

IEEE Open Journal of the Communications Society
This paper explores a new advancement in physical layer security (PLS) techniques, focusing on the integration of Intelligent Reflecting Surfaces (IRS).
Danya A. Saifaldeen, Abdullatif M. Al-Baseer, Bekir S. Ciftler, Mohamed M. Abdallah, Khalid A. Qaraqe   +4 more
doaj   +1 more source

Two-Stage Power Allocation for IRS-Assisted Downlink NOMA: Intra-Group Optimization and Inter-Group Allocation

IEEE Access
Non-Orthogonal Multiple Access (NOMA) has emerged as a key enabler for massive connectivity in next-generation networks, while Intelligent Reflecting Surfaces (IRS) provide a transformative approach to enhancing spectral efficiency by reconfiguring the ...
Zaid Albataineh, Haythem Bany Salameh, Mohammad Al Bataineh   +2 more
doaj   +1 more source

Intelligent Reflecting-Surface-Aided Orbital Angular Momentum Divergence-Alleviated Wireless Communication Mechanism

Network
Orbital angular momentum (OAM) beams exhibit divergence during transmission, which constrains the capacity of communication system channels. To address these challenges, intelligent reflecting surfaces (IRSs), which can independently manipulate incident ...
Qiuli Wu, Yufei Zhao, Shicheng Li, Yiqi Li, Deyu Lin, Xuefeng Jiang   +5 more
doaj   +1 more source

Delay Dispersion in IRS-assisted FSO Links

The line-of-sight (LOS) requirement of free-space optical (FSO) systems can be relaxed by employing optical intelligent reflecting surfaces (IRSs). In this paper, we model the impact of the IRS-induced delay dispersion and derive the channel impulse ...
Ajam, Hedieh, Jamali, Vahid, Schmauss, Bernhard, Schober, Robert   +3 more
core  

Integrating Intelligent Reflecting Surface (IRS) Into Mobile Networks to Bridge the Digital Divide in Rural Areas While Improving User Connectivity

International Journal of Advanced Engineering and Management Research
This paper focuses on connectivity in rural areas of Cameroon. While communication technologies such as 4G and 5G are beginning to become widespread in Cameroon, it is clear that there are still parts of the country that are not covered by radio access: "white zones".
Patrick Dany Bavoua Kenfack, Alphonse Binele Abana, Paul-Salomon Ngohe-Ekam, Emmanuel Tonye, Pamela Brenda Bitom   +4 more
openaire   +1 more source

A unified AI-driven framework for quantum-secured 6G THz networks with intelligent reflecting surfaces and federated edge learning. [PDF]

Sci Rep
Balaji CG, Menaka S, Rajeswari G, Ponnusamy S.   +3 more
europepmc   +1 more source

AI-Driven Real-Time Phase Optimization for Energy Harvesting-Enabled Dual-IRS Cooperative NOMA Under Non-Line-of-Sight Conditions. [PDF]

Sensors (Basel)
Al-Ghafri Y, Asif HM, Nadir Z, Tarhuni N.   +3 more
europepmc   +1 more source

Maximizing Intelligent Reflecting Surface (IRS) Positioning in 5G Wireless Communication and Beyond Using Genetic Algorithms for Enhanced Spectral Efficiency

Abstract IRS technology, which consists of passive elements that reflect signals with controlled phase shifts, offers a promising solution for improving signal quality and coverage without requiring additional active components. However, improving spectrum efficiency in IRS-Assisted wireless communication systems has proven extremely difficult ...
Emmanuel Ampoma Affum, Edward Danso Ansong, Kwame Oteng Gyasi, Emmanuel Obuobi Kwame Addo, Elvis Donkor   +4 more
openaire   +1 more source

A hybrid algorithmic model for enhancing security in intelligent reflecting surface-assisted wireless communication. [PDF]

PeerJ Comput Sci
S S, S M.
europepmc   +1 more source