Results 11 to 20 of about 83,036 (231)
IEEE Open Journal of the Communications Society, 2021 An intelligent reflecting surface (IRS) is an emerging technology in the next-generation (B5G and 6G) wireless communications with the aim of improving the spectral/energy efficiency of the wireless networks. In this paper, we focus on multiple IRS-aided
Ankur Bansal, Keshav Singh, Chih-Peng Li
doaj +2 more sources
Movable-Antenna Enhanced Multiuser Communication via Antenna Position Optimization [PDF]
IEEE Transactions on Wireless Communications, 2023 Movable antenna (MA) is a promising technology to improve wireless communication performance by varying the antenna position in a given finite area at the transceivers to create more favorable channel conditions.
Lipeng Zhu +3 more
semanticscholar +1 more source
Elements and roadmap for interactive molecular graphics and modeling "in the Holodeck". [PDF]
Protein SciAbstract Molecular graphics have been instrumental in advancing chemistry, drug discovery, materials science and structural biology, enabling visualization of molecular systems from static images to dynamic web displays and immersive platforms. While effective visualization is largely a solved problem, in this perspective we argue that the next ...
Mulholland AJ, Abriata LA.
europepmc +2 more sources
Multiuser Communications With Movable-Antenna Base Station: Joint Antenna Positioning, Receive Combining, and Power Control [PDF]
IEEE Transactions on Wireless Communications, 2023 Movable antenna (MA) is an innovative technology that facilitates the repositioning of antennas within the transmitter/receiver area to enhance channel conditions and communication performance.
Zhenyu Xiao +4 more
semanticscholar +1 more source
Channel Estimation for FAS-Assisted Multiuser mmWave Systems [PDF]
IEEE Communications Letters, 2023 This letter investigates the challenge of channel estimation in a multiuser millimeter-wave (mmWave) time-division duplexing (TDD) system. In this system, the base station (BS) uses a multi-antenna uniform linear array (ULA), while each mobile user has a
Hao Xu +8 more
semanticscholar +1 more source
Stacked Intelligent Metasurfaces for Multiuser Beamforming in the Wave Domain [PDF]
ICC 2023 - IEEE International Conference on Communications, 2023 Reconfigurable intelligent surface has recently emerged as a promising technology for shaping the wireless environment by leveraging massive low-cost reconfigurable elements.
Jiancheng An +3 more
semanticscholar +1 more source
Channel Estimation for RIS-Aided Multiuser Millimeter-Wave Systems [PDF]
IEEE Transactions on Signal Processing, 2021 Reconfigurable intelligent surface (RIS) is a promising device that can reconfigure the electromagnetic propagation environment through adjustment of the phase shifts of its reflecting elements. However, channel estimation in RIS-aided multiuser multiple-
Gui Zhou +4 more
semanticscholar +1 more source
Multiuser Communications with Movable-Antenna Base Station Via Antenna Position Optimization [PDF]
2023 IEEE Globecom Workshops (GC Wkshps), 2023 This paper studies the deployment of multiple movable antennas (MAs) at the base station (BS) for enhancing the multiuser communication performance. First, we model the multiuser channel in the uplink to characterize the wireless channel variation caused
Xian-song Pi +3 more
semanticscholar +1 more source
Reconfigurable Intelligent Surface Assisted Multiuser MISO Systems Exploiting Deep Reinforcement Learning [PDF]
IEEE Journal on Selected Areas in Communications, 2020 Recently, the reconfigurable intelligent surface (RIS), benefited from the breakthrough on the fabrication of programmable meta-material, has been speculated as one of the key enabling technologies for the future six generation (6G) wireless ...
Chongwen Huang, Ronghong Mo, Chau Yuen
semanticscholar +1 more source
Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems [PDF]
IEEE Transactions on Communications, 2011 A multiplicity of autonomous terminals simultaneously transmits data streams to a compact array of antennas. The array uses imperfect channel-state information derived from transmitted pilots to extract the individual data streams.
H. Ngo, E. Larsson, T. Marzetta
semanticscholar +1 more source