Results 131 to 140 of about 4,370 (213)

5g: Digital And Hybrid Beamforming

open access: yes
5G network is to support a significantly large amount of mobile data traffic and a huge number of wireless connections and achieve better cost and energy-efficiency as well as quality of service in terms of communication delay, reliability, and security.
Kenji Baril
core  

Secure Satellite Downlink With Hybrid RIS and AI-Based Optimization

open access: yesIEEE Access
In this paper, we explore a secure multiuser multiple-input single-output (MISO) satellite downlink communication system, enhanced by the integration of a hybrid reconfigurable intelligent surface (RIS).
Mian Muhammad Kamal   +7 more
doaj   +1 more source

Performance Comparison of Hybrid Switch, Phase Shifter and Lens Network over Hybrid Beamforming in Millimeter Wave Massive MIMO [PDF]

open access: yesIranian Journal of Electrical and Electronic Engineering
Due to cost and energy concerns with digital beamformers, much of the beamforming is done by hybrid beamformers in mm-wave (mm) massive multiple input multiple output (MIMO). Various works in hybrid beamforming structures considered either phase shifters,
Tadele A Abose   +3 more
doaj  

Hybrid beamforming using massive antenna arrays for fixed sensor networks

open access: yes, 2023
Cette thèse présente une étude complète du beamforming hybride pour les systèmes massive MIMO à ondes millimétriques utilisant des déphaseurs fixes et des commutateurs.
Beiranvand, Jamal
core  

A Joint Scheduling and Millimeter Wave Hybrid Beamforming System with Partial Side Information

open access: yes, 2016
The digital-analog hybrid beamforming technique with a number of antennas is necessary for the millimeter wave (mmWave) communications to overcome both high complexity of large array system and high path loss of mmWave signals.
Park, Hyuncheol, Kwon, Girim
core  

Hybrid receive beamforming applied to ultrasound imaging

open access: yes
In the field of ultrasound imaging, reducing the computational cost of image reconstruction (i.e., applying receive beamforming to multichannel transducer data) is important for practical system implementations.
Xu, Han
core  

TTD Configurations for Near-Field Beamforming: Parallel, Serial, or Hybrid?

open access: yes
True-time delayers (TTDs) are popular components for hybrid beamforming architectures to combat the spatial-wideband effect in wideband near-field communications. In this paper, a serial and a hybrid serial-parallel TTD configuration are investigated for
Schober, Robert   +3 more
core   +1 more source

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