Results 41 to 50 of about 78,791 (201)
RIS-Aided SCMA-Based SWIPT Systems: Design and Optimization
, 2022 The amalgamation of sparse code multiple access (SCMA) and simultaneous wireless information and power transfer (SWIPT) is envisioned to be a promising solution to massive connectivity while providing both information and power to myriads of wireless ...
L Chai (13479439) +4 more
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Beamforming Dual-loop Optimization Algorithm for RIS-assisted UAV Communication Systems [PDF]
Zhengzhou Daxue xuebao. Gongxue banIn order to enhance the spectrum efficiency of the RIS-UAV relay communication system formed by integrating UAV and RIS in complex urban environments, research was conducted to explore the optimization of maximizing system downlink sum rate of RIS-UAV ...
GUO Xinying, LIU Longfei, ZHU Chunhua
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Energy Efficiency Fairness of Active Reconfigurable Intelligent Surfaces-Aided Cell-Free Network
IEEE Access, 2023 Reconfigurable intelligent surface (RIS) has been widely recognized as a promising technique for future wireless communications. Benefiting from its ability to improve channel capacity with low cost and power consumption, the concept of RIS-aided cell ...
Yuhong Wang, Jingyi Peng
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Performance of a Double RIS Communication System Aided by Partially Active Elements
Sensors, 2023 Reconfigurable intelligent surface (RIS) has emerged as a promising technology to enhance the spectral efficiency of wireless communication systems. However, if there are many obstacles between the RIS and users, a single RIS may not provide sufficient ...
Seung-Geun Yoo +5 more
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Jurnal Teknik Elektro IndonesiaUltra-Dense Networks (UDN) and Reconfigurable Intelligent Surfaces (RIS) have emerged as two pivotal technologies for meeting the growing demand for network capacity and service quality.
Alisha Gita Gumilang +4 more
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Inhibition of growth and urease activity of Helicobacter pylori by Korean edible seaweed extracts
Botanical Sciences, 2013 Of 27 Korean seaweed species screened for potential anti- H. pylori activity, seven (25.9%) showed strong inhibitory activity based on the agar diffusion method. The strongest activity was observed for ethanol extracts from Ishige okamurae. At 1 mg/disk,
Bo-Bae Lee +6 more
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, 2023 A) Sample trace of control larvae without retinal in which RIS cannot be activated optogenetically. RIS speed was measured. B) Long-term optogenetic RIS activation by orange light in the presence of retinal. C) Long-term activation of RIS by ReaChR leads
Henrik Bringmann (77674) +1 more
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Physics-compliant diagonal representation of beyond-diagonal RIS [PDF]
International audiencePhysics-compliant models of RIS-parametrized channels assign a load-terminated port to each RIS element. For conventional diagonal RIS (D-RIS), each auxiliary port is terminated by its own independent and individually tunable load ...
del Hougne, Philipp
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IEEE Access, 2021 This paper considers a two-user downlink transmission in reconfigurable intelligent surface (RIS)-aided network over fading channels. Particularly, by employing user grouping and fixed power allocation scheme to enable non-orthogonal multiple access ...
Anh-Tu Le +4 more
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Perfil antropométrico de dependentes de crack ao internar em hospital para desintoxicação
Clinical and Biomedical Research, 2011 Introdução: O objetivo desse artigo foi avaliar o perfil antropométrico dos dependentes de cocaína/crack quando do seu ingresso em atendimento de internação hospitalar para desintoxicação. Método: O seu delineamento foi transversal, sendo pesquisados 30
Alexandre Dido Balbinot +3 more
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