Results 51 to 60 of about 4,041 (226)

Deep learning approach for hybrid beamforming design in MU-MISO mmWave systems

open access: yesScientific Reports
Hybrid beamforming is a promising approach to alleviate hardware complexity in multi-user multiple-input single-output (MU-MISO) systems while maintaining high data rate performance.
Ebrahim Ghaith   +3 more
doaj   +1 more source

Joint User Scheduling and MU-MIMO Hybrid Beamforming Algorithm for mmWave FDMA Massive MIMO System

open access: yesInternational Journal of Antennas and Propagation, 2016
The large bandwidth and multipath in millimeter wave (mmWave) cellular system assure the existence of frequency selective channels; it is necessary that mmWave system remains with frequency division multiple access (FDMA) and user scheduling. But for the
Jing Jiang, Deting Kong
doaj   +1 more source

Low Complexity and Robust Codebook-Based Analog Beamforming for Millimeter Wave MIMO Systems

open access: yesIEEE Access, 2017
Millimeter-wave (mm-Wave) MIMO systems have been proposed to achieve higher spectral efficiency via the hybrid beamforming structure, which consists of analog beamforming and digital beamforming.
Yong Niu   +5 more
doaj   +1 more source

Directional modulation design for multi-beam multiplexing based on hybrid antenna array structures

open access: yesEURASIP 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

Software‐Defined Terahertz Beam Manipulation via Active Light‐Controlled Frequency Coding Information Metasurface

open access: yesAdvanced Physics Research, EarlyView.
This paper proposes an integrated active light‐controlled frequency coding metasurface and a software‐defined array control system. Utilizing spatially encoded structured light and a “Decision‐Optimization‐Execution” intelligent closed‐loop architecture, the system overcomes traditional electrical control interference, achieves real‐time dynamic ...
Chao Zhao   +7 more
wiley   +1 more source

A Review on Millimeter-Wave Hybrid Beamforming for Wireless Intelligent Transport Systems

open access: yesFuture Internet
As the world braces for an era of ubiquitous and seamless connectivity, hybrid beamforming stands out as a beacon guiding the evolutionary path of wireless communication technologies.
Waleed Shahjehan   +5 more
doaj   +1 more source

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

open access: yesIET Communications, 2021
This paper presents a simple and robust hybrid combiner for the multiuser massive multiple‐input multiple‐output (MIMO) uplink. The hybrid beamforming is used in massive MIMO systems to reduce the number of radio frequency chains.
Irfan Ahmed   +2 more
doaj   +1 more source

QoS-Aware Hybrid Beamforming With Minimal Power in mmWave Massive MIMO Systems

open access: yesIEEE Access, 2021
Hybrid beamforming is used to leverage the benefits of both massive multiple input and multiple output (MIMO) systems and millimeter waves for significantly increasing the capacity of wireless networks. Existing schemes for hybrid beamforming in multiple
Mohsen Tajallifar   +2 more
doaj   +1 more source

Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology

open access: yesInfoScience, EarlyView.
Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang   +3 more
wiley   +1 more source

Spectral Efficiency of mmWave Massive MIMO Systems with Hybrid Beamforming

open access: yesWasit Journal of Engineering Sciences
Millimeter wave communications (mmWave) has been considered a key enabling technique for 5G systems since it offers orders of magnitude more spectrum than current frequency bands.
Sajjad Kadhim   +5 more
doaj   +1 more source

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