Results 101 to 110 of about 6,053 (218)

Integration of beyond Diagonal RIS and UAVs in 6G NTNs: Enhancing Aerial Connectivity [PDF]

open access: yes
peer reviewedThe reconfigurable intelligent surface (RIS) technology shows great potential in sixth-generation (6G) terrestrial and non-terrestrial networks (NTNs) since it can effectively change wireless settings to improve connectivity.
Ahmed, Manzoor   +5 more
core   +1 more source

The Deep Deterministic Policy Gradient Algorithm Based on RIS Technology in a Coal Mine Tunnel

open access: yesApplied Sciences
Reconfigurable Intelligent Surface (RIS) technology relies on its reconfigurable electromagnetic properties and offers an efficient solution for enhancing signal quality in coal mine communications.
Shuqi Wang   +3 more
doaj   +1 more source

Plug-In RIS: A Novel Approach to Fully Passive Reconfigurable Intelligent Surfaces

open access: yesIEEE Transactions on Wireless Communications
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 environment, adjusted once according to the location of both base station and blocked region, and operates with fixed beams to enhance the system performance. The plug-in RIS is
Mahmoud Raeisi   +4 more
openaire   +2 more sources

Systems resource allocation algorithm for RIS-assisted D2D secure communication based on parallel CNN

open access: yesTongxin xuebao, 2022
To meet the requirements of intelligent signal processing and physical layer security, aiming at the shortage of spectrum resources, a resource allocation algorithm for reconfigurable intelligent surface (RIS)-assisted the device to device (D2D ...
Zhengyu ZHU   +5 more
doaj  

Comments on "A Linear Time Algorithm for the Optimal Discrete IRS Beamforming"

open access: yes, 2023
The problem of optimizing discrete phases in a reconfigurable intelligent surface (RIS) to maximize the received power at a user equipment is addressed. Comments on [1] are provided.
Ayanoglu, Ender, Pekcan, Dogan Kutay
core  

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

open access: yesIEEE Transactions on Communications
14 pages, journal ...
Kun Chen-Hu, Petar Popovski
openaire   +3 more sources

Rank Optimization for MIMO systems with RIS: Simulation and Measurement

open access: yes, 2023
Reconfigurable intelligent surface (RIS) is a promising technology that can reshape the electromagnetic environment in wireless networks, offering various possibilities for enhancing wireless channels.
Chen, Weicong   +7 more
core  

A Shared-Aperture Dual-Band sub-6 GHz and mmWave Reconfigurable Intelligent Surface With Independent Operation

open access: yes
A novel dual-band reconfigurable intelligent surface (DBI-RIS) design that combines the functionalities of millimeter-wave (mmWave) and sub-6 GHz bands within a single aperture is proposed.
Chiu, Chi Yuk   +7 more
core  

In-Depth Analysis of HARQ Performance in Active RIS-Assisted RSMA Systems [PDF]

open access: yes
Utilizing reconfigurable intelligent surface (RIS) technology to construct an intelligent radio environment is essential for the development of the sixth-generation (6G) communication network which is marked by ultra-high speed, minimal latency, and ...
Tang, J, Wong, KK, Zheng, B, Zheng, Y
core  

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

open access: yes
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 ...
Qayyum, Abdullah, Nekovee, Maziar
openaire   +2 more sources

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