Effect of residual stress distribution in a log on lumber warp due to sawing: a numerical simulation based on the beam theory
Sign Up to like & getrecommendations! Published in 2020 at "Wood Science and Technology"
DOI: 10.1007/s00226-020-01240-y
Abstract: When a squared lumber such as a beam and/or a bearer is produced from a log, they often show warps. Warp of the sawn lumber is practically not serious when the pith is located at… read more here.
Keywords: numerical simulation; residual stress; beam theory; based beam ... See more keywords
Deep Reinforcement Learning Based Beam Selection for Hybrid Beamforming and User Grouping in Massive MIMO-NOMA System
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3199760
Abstract: This paper presents a deep reinforcement learning-based beam-user selection and hybrid beamforming design for the multiuser massive multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) downlink systems. The conventional hybrid beamforming in massive MIMO provides multiple… read more here.
Keywords: reinforcement learning; beam; based beam; deep reinforcement ... See more keywords
Deception Jamming Detection Based on Beam Scanning for Satellite Navigation Systems
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2021.3083590
Abstract: A scheme for deception jamming detection based on beam scanning is proposed in this letter. This scheme detects the authenticity of the corresponding signal by forming a null in the direction of each visible satellite… read more here.
Keywords: based beam; beam scanning; deception jamming; scheme ... See more keywords
Deep Learning Based Beam Training for Extremely Large-Scale Massive MIMO in Near-Field Domain
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3210042
Abstract: Extremely large-scale massive multiple-input-multiple-output (XL-MIMO) is regarded as a promising technology for next-generation communication systems. In order to enhance the beamforming gains, codebook-based beam training is widely adopted in XL-MIMO systems. However, in XL-MIMO systems,… read more here.
Keywords: near field; based beam; beam training; field domain ... See more keywords
3D Scene-Based Beam Selection for mmWave Communications
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2020.3005983
Abstract: In this letter, we present a novel framework of 3D scene based beam selection for mmWave communications that relies only on the environmental data and deep learning techniques. Different from other out-of-band side-information aided communication… read more here.
Keywords: based beam; scene based; beam selection; scene ... See more keywords
Deep Learning-Based Beam Tracking for Millimeter-Wave Communications Under Mobility
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Communications"
DOI: 10.1109/tcomm.2021.3107526
Abstract: In this paper, we propose a deep learning-based beam tracking method for millimeter-wave (mmWave) communications. Beam tracking is employed for transmitting the known symbols using the sounding beams and tracking time-varying channels to maintain a… read more here.
Keywords: deep learning; millimeter wave; learning based; beam tracking ... See more keywords
Compressive Sensing-Based Beam Alignment Schemes for Time-Varying Millimeter-Wave Channels
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Wireless Communications"
DOI: 10.1109/twc.2022.3205702
Abstract: This paper considers the implementation of compressive sensing (CS) approaches for beam alignment (BA) in multiuser millimeter wave (mmWave) MIMO systems. We particularly consider wideband time-varying channels in the practical low SNR regime. We examine… read more here.
Keywords: time; based beam; millimeter wave; time varying ... See more keywords
800  Gb/s/200  m FSO link with a WDM-PAM4 scheme and SLM-based beam tracking technology.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.418822
Abstract: An 800 Gb/s/200 m free-space optical (FSO) link with a wavelength-division multiplexing (WDM)-four-level pulse amplitude modulation (PAM4) scheme and spatial light modulator (SLM)-based beam tracking technology is constructed. To the best of our knowledge, this… read more here.
Keywords: based beam; fso link; pam4 scheme; beam ... See more keywords