Results 21 to 30 of about 2,074 (252)
Reconfigurable Intelligent Surface for Massive Connectivity
CoRR, 2021 With the rapid development of Internet of Things (IoT), massive machine-type communication has become a promising application scenario, where a large number of devices transmit sporadically to a base station (BS). Reconfigurable intelligent surface (RIS) has been recently proposed as an innovative new technology to achieve energy efficiency and ...
Shuhao Xia +3 more
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Survey on reconfigurable intelligent surfaces below 10 GHz
EURASIP Journal on Wireless Communications and Networking, 2021 Reconfigurable intelligent surface (RIS) is a programmable structure that can be used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the surface.
Visa Tapio +4 more
doaj +1 more source
Frontiers in Communications and Networks, 2021 As data rates demands are exploding, 5G will soon rely on mmWaves that offer much higher bandwidths. Yet at these frequencies, attenuation and diffraction of waves require point to point communications with beamforming base stations that are complex and ...
Vladislav Popov +7 more
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Revolutionizing Optical Wireless Communications via Smart Optics
IEEE Open Journal of the Communications Society, 2022 The heterogeneity of optical wireless networks (OWNs) has expanded over decades in terms of services, node densities, mobility requirements, bandwidth needs, responsiveness, and physical device profile.
Amr M. Abdelhady +3 more
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Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come
EURASIP Journal on Wireless Communications and Networking, 2019 Future wireless networks are expected to constitute a distributed intelligent wireless communications, sensing, and computing platform, which will have the challenging requirement of interconnecting the physical and digital worlds in a seamless and ...
Marco Di Renzo +13 more
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Paladyn, 2023 With proper tuning in the phase shift of reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs), which consist of huge number of passive reflecting elements, are the most promising and transforming technology to reconfigure ...
Singh Ashish K. +4 more
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Reconfigurable Intelligent Surface Aided NOMA Networks [PDF]
IEEE Journal on Selected Areas in Communications, 2020 Reconfigurable intelligent surfaces (RISs) constitute a promising performance enhancement for next-generation (NG) wireless networks in terms of enhancing both their spectrum efficiency (SE) and energy efficiency (EE). We conceive a system for serving paired power-domain non-orthogonal multiple access (NOMA) users by designing the passive beamforming ...
Tianwei Hou +5 more
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Enhancing active reconfigurable intelligent surface
Intelligent and Converged Networks, 2022 A Reconfigurable Intelligent Surface (RIS) panel comprises many independent Reflective Elements (REs). One possible way to implement an RIS is to use a binary passive load impedance connected to an antenna element to achieve the modulation of reflected radio waves. Each RE reflects incoming waves (incident signal) by using on/off modulation between two
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Intelligent Spectrum Learning for Wireless Networks With Reconfigurable Intelligent Surfaces [PDF]
IEEE Transactions on Vehicular Technology, 2021 Reconfigurable intelligent surface (RIS) has become a promising technology for enhancing the reliability of wireless communications, which is capable of reflecting the desired signals through appropriate phase shifts. However, the intended signals that impinge upon an RIS are often mixed with interfering signals, which are usually dynamic and unknown ...
Bo Yang 0035 +5 more
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Enabling NOMA in Backscatter Reconfigurable Intelligent Surfaces-Aided Systems
IEEE Access, 2021 One of the key enablers of future wireless communications is constituted by massive users can access the core network in wireless systems simultaneously, which can improve the spectral efficiency.
Chi-Bao Le +5 more
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