Results 21 to 30 of about 5,458,803 (280)
Spectral Efficiency Optimization for Hybrid Relay-Reflecting Intelligent Surface [PDF]
, 2021 We propose a novel concept of hybrid relay-reflecting intelligent surface (HR-RIS), in which a single or few elements are deployed with power amplifiers (PAs) to serve as active relays, while the remaining elements only reflect the incident signals.
Vu, Quang-Doanh +7 more
core +2 more sources
Intelligent Reflecting Surface-Assisted Secure Multi-Input Single-Output Cognitive Radio Transmission. [PDF]
Sensors (Basel), 2020 Xiao H, Dong L, Wang W.
europepmc +2 more sources
Hybrid Relay-Reflecting Intelligent Surface-Assisted Wireless Communications [PDF]
, 2022 Reconfigurable intelligent surface (RIS) has emerged as a cost- and energy-efficient solution to enhance the wireless communications capacity. However, recent studies show that a very large surface is required for a RIS-assisted communications system ...
Vu, Quang-Doanh +3 more
core +2 more sources
On the Position of Intelligent Reflecting Surfaces
2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2021 We study the positional impact of an intelligent reflecting surface (IRS) on the achievable rate for single and multiple antenna systems. We show that in IRS-aided single antenna systems, it is always best to place the IRS as close as possible to the transmitter or receiver since the large-scale fading for IRS-reflected links is the main factor that ...
Emad Ibrahim +2 more
openaire +3 more sources
A Survey - Intelligent Reflecting Surface Beyond 5G
Al-Iraqia Journal for Scientific Engineering Research, 2023 In the coming decade, we'll see the rollout of the intelligent information society—a highly digitalized, intelligent civilization that draws inspiration from AI and runs on global data.
Areej Abdulkareem, Satea H. Alnajjar
doaj +1 more source
A Close View through the Intelligent Reflecting Surface [PDF]
, 2021 Wireless networks have had a remarkable influence on all facets of human life. Low latency and higher spectral efficiency of the wireless data networks will offer high-speed communications and services in all sectors.
Sangeetha Gopinath
core +1 more source
Communication Optimization In Intelligent Reflecting Surface Aided Wireless Systems [PDF]
, 2023 With the growing demand for high-speed networks, 5G cellular systems provide advantages by utilizing higher frequency bands and wide bandwidth, and supporting high data transmission speeds. However, with the move to operate at high frequencies, obstacles
Xu, Yifei
core +4 more sources
Reconfigurable Metasurface: Enabling Tunable Reflection in 6G Wireless Communications
Sensors, 2023 With the continuous advancement of technology, there is an increasing need for innovative solutions that can handle complex applications such as haptic communications, Internet of Things for smart cities, automation, and manufacturing.
Monisha Selvaraj +3 more
doaj +1 more source
Covert communication in relay and RIS networks
Security and Safety, 2023 Covert communication aims to prevent the warden from detecting the presence of communications, i.e. with a negligible detection probability. When the distance between the transmitter and the legitimate receiver is large, large transmission power is ...
Hu Jinsong +4 more
doaj +1 more source
Optimal design for the artificial‐noise‐aided IRS‐MIMO‐OFDM secure communications
IET Communications, 2022 This paper discusses an artificial noise‐aided intelligent reflecting surface‐MIMO–OFDM system physical layer secure communication, in which two cases for the intelligent reflecting surface reflection coefficient models are considered separately, that is
Jingya Ren +4 more
doaj +1 more source