Results 31 to 40 of about 4,370 (213)
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
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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
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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
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Optimal Hybrid Beamforming Design for Millimeter-Wave Massive Multi-User MIMO Relay Systems
IEEE Access, 2019 As a promising technology in the next generation mobile network, millimeter-wave (mmWave) communication can mitigate the spectrum crunch of improving the network capacity by exploiting the large underutilized spectrum bands of the mmWave frequencies. The
Yang Zhang +4 more
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Journal of Applied Science and Engineering, 2021 Beamforming at millimeter-wave (mmWave) band, promises to significantly support 5G networks in achieving their performance goals. The conventional digital beamforming uses a separate RF chain for each antenna element, while it leads to high cost and ...
Abdul Haq Nalband +2 more
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Robust Hybrid Beamforming in Millimeter Wave Relay Networks With Imperfect CSI
IEEE Access, 2018 Millimeter-wave (mmWave) communication offers rich spectrum resources and acts as a key enabling technology for future wireless communication systems. Hybrid (digital and analog) beamforming and relay techniques are important for mmWave implementations ...
Zhen Luo +3 more
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Subspace Hybrid MVDR Beamforming for Augmented Hearing
CoRR, 2023 Signal-dependent beamformers are advantageous over signal-independent beamformers when the acoustic scenario - be it real-world or simulated - is straightforward in terms of the number of sound sources, the ambient sound field and their dynamics.
Sina Hafezi +6 more
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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
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Multiuser hybrid analog/digital beamforming for relatively large-scale antenna arrays
, 2013 Power consumption and costs of the analog front-end (AFE) chains are often not negligible for large-scale antenna array systems. A low-complexity hardware architecture is to use a number of AFE chains that is less than the number of the antennas ...
Xiang, Wei +9 more
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2D-OPC Subarray Structure for Efficient Hybrid Beamforming over Sparse mmWave Channels
International Journal of Antennas and Propagation, 2021 Millimeter-wave (mmWave) communication is a key technology of 5G new radio (NR) mobile communication systems. Efficient beamforming using a large antenna array is important to cope with the significant path loss experienced in the mmWave spectrum.
Junhyuk Yoo, Wonjin Sung, In-Kyung Kim
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