Results 31 to 40 of about 1,981,914 (281)
On IRS-Assisted Covert Communication with a Friendly UAV
Drones, 2023 Driven by the rapidly growing demand for information security, covert wireless communication has become an essential technology and attracted tremendous attention.
Xiaobei Xu +6 more
doaj +1 more source
Federated Learning via Intelligent Reflecting Surface [PDF]
IEEE Transactions on Wireless Communications, 2022 Over-the-air computation (AirComp) based federated learning (FL) is capable of achieving fast model aggregation by exploiting the waveform superposition property of multiple access channels. However, the model aggregation performance is severely limited by the unfavorable wireless propagation channels.
Zhibin Wang 0003 +6 more
openaire +3 more sources
Covert Transmission Assisted by Intelligent Reflecting Surface [PDF]
IEEE Transactions on Communications, 2021 Covert transmission is studied for an intelligent reflecting surface (IRS) aided communication system, where Alice aims to transmit messages to Bob without being detected by the warden Willie. Specifically, an IRS is used to increase the data rate at Bob under a covert constraint.
Jiangbo Si +6 more
openaire +3 more sources
User Localization via Multiple Intelligent Reflecting Surfaces for LOS-Dominated Channels
IEEE Access, 2023 Intelligent reflecting surfaces (IRSs) in the millimeter-wave (mmWave) and terahertz (THz) frequency bands offer precise wireless localization capabilities for future networks.
Mojtaba Ghermezcheshmeh, Nikola Zlatanov
doaj +1 more source
STAR-RISs: Simultaneous Transmitting and Reflecting Reconfigurable Intelligent Surfaces
, 2021 In this letter, simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) are studied. Compared with the conventional reflecting-only RISs, the coverage of STAR-RISs is extended to 360 degrees via simultaneous transmission ...
Liu, Yuanwei +3 more
core +1 more source
Intelligent-Meta-Surfaces-Aided Wireless Communications in 6G
, 2022 Intelligent-Meta-Surfaces-Aided Wireless Communications in ...
Jinho Choi (13076106) +1 more
core +1 more source
Security Hardening of Intelligent Reflecting Surfaces Against Adversarial Machine Learning Attacks
IEEE Access, 2022 Next-generation communication networks, also known as NextG or 5G and beyond, are the future data transmission systems that aim to connect a large amount of Internet of Things (IoT) devices, systems, applications, and consumers at high-speed data ...
Ferhat Ozgur Catak +4 more
doaj +1 more source
Feasibility of a Plasma-Based Intelligent Reflective Surface
IEEE Access, 2022 Gaseous Plasma Antennas are devices in which an ionized gas (i.e., plasma) is exploited to transmit and receive Electromagnetic waves. Their main advantage over metallic systems is the possibility to reconfigure the antenna performance (e.g., radiation pattern) by electronically varying the plasma parameters (e.g., density).
MIRKO MAGAROTTO +3 more
openaire +5 more sources
Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial [PDF]
IEEE Transactions on Communications, 2021 Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal prorogation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capable of dynamically altering wireless channels to enhance the communication performance.
Qingqing Wu 0001 +4 more
openaire +4 more sources
Reconfigurable Intelligent Surfaces: Principles and Opportunities
, 2021 International audienceReconfigurable intelligent surfaces (RISs), also known as intelligent reflecting surfaces (IRSs), or large intelligent surfaces (LISs) 1 , have received significant attention for their potential to enhance the capacity and coverage ...
Liu, Yuanwei +7 more
core +1 more source