Results 41 to 50 of about 6,839,717 (234)
Joint User Clustering and Beamforming in Non-Orthogonal Multiple Access Networks
IEEE Access, 2020 The demand for higher data rate in wireless networks continues to grow, however the wireless spectrum cannot meet ever-increasing demands. Non-orthogonal Multiple Access (NOMA) technology is attracting attentions to overcome the lack of resource spectrum
Ha-Ryung Kim, Jiasi Chen, Jongwon Yoon
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IEEE Access, 2023 In this article, a multiport beamforming system based on the reconfigurable waveguide phased antenna array is presented, which is fed by the microstrip single-layer multiport feeding network.
Yifang Wei +2 more
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Achievable Rate Region under Linear Beamforming for Dual-Hop Multiple-Access Relay Network
Entropy, 2018 Consider a network consisting of two independent single-antenna sources, a single-antenna destination and a helping multiple-antenna relay. This network is called a dual-hop multiple access relay network (MARN).
Guiguo Feng, Wangmei Guo, Binyue Liu
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Efficient Beamforming for Mobile mmWave Networks [PDF]
2019 International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOPT), 2019 We design a lightweight beam-searching algorithm for mobile millimeter-wave systems. We construct and maintain a set of path skeletons, i.e., potential paths between a user and the serving base station to substantially expedite the beam-searching process.
Sara Khosravi +2 more
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Beamforming Optimization for Wireless Network Aided by Intelligent Reflecting Surface With Discrete Phase Shifts [PDF]
IEEE Transactions on Communications, 2019 Intelligent reflecting surface (IRS) is a cost-effective solution for achieving high spectrum and energy efficiency in future wireless networks by leveraging massive low-cost passive elements that are able to reflect the signals with adjustable phase ...
Qingqing Wu, Rui Zhang
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Null‐space beamforming strategy for secrecy rate balancing of two‐way MIMO relay networks
IET Communications, 2023 Here, the issue of physical layer security in a two‐way multi‐antenna relay network) is studied. In such a network, two multi‐antenna transceivers attempt to exchange their secret messages via a multi‐antenna relay node in the presence of an eavesdropper.
Samad Fazeli, Soroush Akhlaghi
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Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
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Passive Beamforming Design for Double RIS-muMIMO System: A Machine Learning Perspective
IEEE AccessMultiple-input multiple-output (MIMO) and reconfigurable intelligent surfaces (RIS) enable network system designers to create intelligent, energy-efficient network systems.
M. Rezwanul Mahmood +2 more
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Sensors, 2017 This paper investigates how to efficiently charge sensor nodes in a wireless rechargeable sensor network (WRSN) with radio frequency (RF) chargers to make the network sustainable. An RF charger is assumed to be equipped with a uniform circular array (UCA)
Ke-Han Yao +3 more
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Joint Optimization of Beamforming, Phase-Shifting and Power Allocation in a Multi-Cluster IRS-NOMA Network [PDF]
IEEE Transactions on Vehicular Technology, 2020 The combination of non-orthogonal multiple access (NOMA) and intelligent reflecting surface (IRS) is an efficient solution to significantly enhance the energy efficiency of the wireless communication system.
Ximing Xie, Fang Fang, Z. Ding
semanticscholar +1 more source