Results 31 to 40 of about 2,907 (204)
Precoding and Beamforming Techniques in mmWave-Massive MIMO: Performance Assessment
IEEE Access, 2022 Massive MIMO and mmWave communication are the technologies for achieving 5G design goals. Fortunately, these two technologies share a symbiotic integration.
Tewelgn Kebede +4 more
doaj +1 more source
A new digital predistortion technique for analog beamforming systems
IEICE Electronics Express, 2016 Eui-Rim Jeong
exaly +3 more sources
Hybrid Precoding Technique With Iterative Algorithm for MIMO-OFDM System
IEEE Access, 2020 This paper proposes a hybrid precoding technique based on multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system to improve bit error rate (BER) performance in hybrid beamforming system.
Seulgi Lee +4 more
doaj +1 more source
Bioengineering, 2023 Low-complexity ultrasound systems are increasingly desired for both wearable, point-of-care ultrasound and high-end massive-channel ultrasound for 3-D matrix imaging.
Heechul Yoon +3 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
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
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
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
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
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