Results 11 to 20 of about 3,484 (213)

Reconfigurable intelligent surface (RIS): Eigenvalue decomposition-based separate channel estimation [PDF]

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2021
Reconfigurable intelligent surface (RIS) has recently drawn significant attention in wireless communication technologies. However, identifying, modeling, and estimating the RIS channel in multiple-input multiple-output (MIMO) systems are considered ...
Zegrar, Salah Eddine, Afeef, Liza, Arslan, Hüseyin   +2 more
core   +4 more sources

Defensive Reconfigurable Intelligent Surface (D-RIS) Based on Non-Reciprocal Channel Links [PDF]

IEEE Transactions on Communications
A reconfigurable intelligent surface (RIS) is commonly made of low-cost passive and reflective meta-materials with excellent beam steering capabilities. It is applied to enhance wireless communication systems as a customizable signal reflector.
Kun Chen-Hu, Petar Popovski
exaly   +5 more sources

Reconfigurable Intelligent Surface (RIS) Assisted Wireless Coverage Extension: RIS Orientation and Location Optimization [PDF]

IEEE Communications Letters, 2021
Recently, reconfigurable intelligent surfaces (RIS) have attracted a lot of attention due to their capability of extending cell coverage by reflecting signals toward the receiver. In this letter, we analyze the coverage of a downlink RIS-assisted network with one base station (BS) and one user equipment (UE).
Shuhao Zeng, Hongliang Zhang, Boya Di
exaly   +3 more sources

Reconfigurable Intelligent Surface (RIS)-Enhanced Two-Way OFDM Communications [PDF]

IEEE Transactions on Vehicular Technology, 2020
Submitted to IEEE ...
Chandan Pradhan, Ang Li, Lingyang Song   +2 more
exaly   +3 more sources

Reconfigurable Intelligent Surface (RIS) Aided Multi-User Networks: Interplay Between NOMA and RIS

IEEE Wireless Communications, 2021
This article focuses on the exploitation of reconfigurable intelligent surfaces (RISs) in multi-user networks employing orthogonal multiple access (OMA) or non-orthogonal multiple access (NOMA), with an emphasis on investigating the interplay between ...
Schober, Robert, Liu, Yuanwei, Ding, Zhiguo, Di Renzo, Marco, Mu, Xidong, Liu, Xiao   +5 more
core   +2 more sources

The graphene application for the Reconfigurable Intelligent Surface (RIS) design for the NOMA-RIS-MIMO system. Phenomenological view.

, 2023
The material is dedicated to various aspects of graphene metasurface implementation of the Reconfigurable Intelligent Surface (RIS) in the framework of the incoherent paradigm for NOMA-RIS-MIMO transmission design.
Valeri Kontorovich (12091406)
core   +2 more sources

Hierarchical Reconfigurable Metasurface Based on Scenario-Guided Functional Modules and Programmable Core. [PDF]

Adv Sci (Weinh)
This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Zhu L, Han J, Zheng Z, Feng Q, Xia D, Ma X, Mu Y, Luo G, Li R, Liu H, Xue H, Li L.   +11 more
europepmc   +2 more sources

Reconfigurable Intelligent Surface (RIS) Design for 5G N260 Frequency Band

2023 IEEE Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMC+SIPI), 2023
In This Paper, a New Low Profile Reconfigurable Intelligent Surface Design with High Resolution Steering Reflector and Wide Frequency Band Width is Proposed at N260 Frequency Band, Used for 5G New Radio Applications.
Mathew, Manish Kizhakkeveettil, Peng, Zhekun, Kim, DongHyun, Yazdani, Reza   +3 more
core   +2 more sources

Reconfigurable intelligent surfaces (RIS) using NOMA with thermal energy harvesting

Signal, Image and Video Processing
International audienceThe integration of Reconfigurable Intelligent Surfaces (RIS) with Non-Orthogonal Multiple Access (NOMA) and thermal energy harvesting presents a novel approach to enhancing wireless communication networks.
Alhussein, Musaed, Boujemaa, Hatem, Rekaya, Ghaya   +2 more
core   +2 more sources

Multi-user frequency selective beam steering by reconfigurable intelligent surfaces in the Ka-band. [PDF]

Sci Rep
Reconfigurable intelligent surfaces (RIS) have been proposed to extend the coverage of wireless communication signals at mm-wave frequencies. Here, we designed and fabricated a reconfigurable intelligent surface (RIS) for multi-user frequency selective ...
Mueller L, Wolff A, Klingel S, Krieger J, Franke L, Stemler R, Rahm M.   +6 more
europepmc   +2 more sources