Results 21 to 30 of about 323,225 (210)
Near-Optimal Design for Hybrid Beamforming in mmWave Massive Multi-User MIMO Systems
IEEE Access, 2020 Millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems can obtain sufficient beamforming gains to combat severe path loss in signal propagation. The hybrid (analog/digital) beamforming with multiple data streams can be utilized to
Yang Zhang +5 more
doaj +1 more source
IEEE Access, 2023 In this paper, we investigate hybrid beamforming and resource allocation design problems for uplink millimeter wave (mmWave) multi-user (MU) massive multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems.
Hsin-Hsiang Tseng +2 more
doaj +1 more source
Constrained Channel Decomposition-Based Hybrid Beamforming for mmWave Massive MIMO Systems
IEEE Open Journal of the Communications Society, 2020 In this article, we propose a hybrid beamforming design for multiuser mmWave massive MIMO systems. We adopt a two-stage approach for designing the analog and digital beamforming separately. The analog beamforming design is based on a constrained low-rank
Guilherme Martignago Zilli, Wei-Ping Zhu
doaj +1 more source
Precision planter monitoring system based on mobile communication network
IET Networks, EarlyView., 2022 Abstract Sowing is an important link in agricultural production and the basis for ensuring high yields and bumper harvests. Agriculture requires precision plows with good performance and stable work. However, the seeding process is in a completely closed state, and the operator relies mainly on experience to judge the operating state and performance of
Bing Li, Jiyun Li
wiley +1 more source
, 2023 <p><strong>Full Changelog</strong>: https://github.com/jdassink/beamforming/commits/beamforming</p ...
Jelle Assink
core +1 more source
Analog Beamforming with Antenna Selection for Large-Scale Antenna Arrays [PDF]
, 2021 peer reviewedIn large-scale antenna array (LSAA) wireless communication systems employing analog beamforming architectures, the placement or selection of a subset of antennas can significantly reduce the power consumption and hardware complexity. In this
OTTERSTEN, Björn +9 more
core +1 more source
Multiple-Beam Selection With Limited Feedback for Hybrid Beamforming in Massive MIMO Systems
IEEE Access, 2017 Hybrid multiple-input multiple-output (MIMO) systems have been thought as a promising technology in future 5G. Compared with conventional digital MIMO systems, such a structure is equipped with fewer RF chains, which would reduce the computational ...
Yuwei Ren +3 more
doaj +1 more source
Directional modulation design for multi-beam multiplexing based on hybrid antenna array structures
EURASIP Journal on Advances in Signal Processing, 2023 For integrated sensing and communication, one important research direction is to employ various beamforming techniques to avoid interference between the two functions.
Maolin Li +5 more
doaj +1 more source
Hybrid Beamforming for Sum Rate Maximization in Wideband Multi-User MIMO Relay Systems
IEEE Access, 2021 Hybrid precoding has a great potential to achieve near-optimal performance with few radio-frequency (RF) chains in comparison to the number of antennas. This paper proposes a novel hybrid beamforming solution for sum rate maximization in a wideband multi-
Hafiz Muhammad Tahir Mustafa +1 more
doaj +1 more source
Analog gradient beamformer for a wireless ultrasound scanner [PDF]
SPIE Proceedings, 2016 This paper presents a novel beamformer architecture for a low-cost receiver front-end, and investigates if the image quality can be maintained. The system is oriented to the development of a hand-held wireless ultrasound probe based on Synthetic Aperture Sequential Beamforming, and has the advantage of effectively reducing circuit complexity and power ...
di Ianni, Tommaso +5 more
openaire +1 more source