Results 11 to 20 of about 51,235 (294)

Lattice-Based mmWave Hybrid Beamforming [PDF]

open access: yesIEEE Transactions on Communications, 2021
Conventional hybrid precoding and combining based transceivers require a large number of high-resolution radio frequency (RF) phase shifters (PSs), which impose prohibitive hardware costs and power consumption. To address the above issue, both partially connected RF PSs and low-resolution PSs have been proposed. However, the performance limits of these
Shanxiang Lyu   +4 more
openaire   +3 more sources

Demo: mmWave Lens MIMO

open access: yes2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2020
3 pages, 4 figures, 1 table, 2020 WCNC demo ...
Park, Sang-Hyun   +4 more
openaire   +2 more sources

An Ultra-Wide Band MIMO Antenna System with Enhanced Isolation for Microwave Imaging Applications

open access: yesMicromachines, 2023
This paper introduces a novel two-port ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna system with enhanced isolation characteristics. The antenna, designed on a thin 0.787 mm RO5880 substrate, achieves a compact form factor of 52 × 26
Saad Hassan Kiani   +4 more
doaj   +1 more source

Absorption-Dominant mmWave EMI Shielding Films with Ultralow Reflection using Ferromagnetic Resonance Frequency Tunable M-Type Ferrites

open access: yesNano-Micro Letters, 2023
A novel multi-band absorption-dominant electromagnetic interference (EMI) shielding film with transition metal-doped M-type strontium ferrites composite layer and a conductive grid is developed.
Horim Lee   +5 more
semanticscholar   +1 more source

High Resolution Point Clouds from mmWave Radar [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2022
This paper explores a machine learning approach on data from a single-chip mmWave radar for generating high resolution point clouds – a key sensing primitive for robotic applications such as mapping, odometry and localization.
Akarsh Prabhakara   +8 more
semanticscholar   +1 more source

Dynamic millimeter-wave OAM beam generation through programmable metasurface

open access: yesNanophotonics, 2022
Millimeter-wave (mmWave) and orbital angular momentum (OAM) multiplexing are two key technologies for modern wireless communications, where significant efforts have been devoted to combining these two technologies for extremely high channel capacities ...
Bai Xudong   +6 more
doaj   +1 more source

Hybrid Evolutionary-Based Sparse Channel Estimation for IRS-Assisted mmWave MIMO Systems

open access: yesIEEE Transactions on Wireless Communications, 2022
The intelligent reflecting surface (IRS)-assisted millimeter wave (mmWave) communication system has emerged as a promising technology for coverage extension and capacity enhancement.
Zhen Chen   +5 more
semanticscholar   +1 more source

Improved Hybrid Precoder Design for Secure mmWave MIMO Communications

open access: yesElektronika ir Elektrotechnika, 2020
Key challenges of emerging mobile communication systems are to provide higher data rates, diverse device connectivity, low latency, higher system capacity, and low energy consumption. The communication systems exploiting the millimeter-wave (mmWave) band
Yasin Kabalci, Muhammad Ali
doaj   +1 more source

Deep Denoising Neural Network Assisted Compressive Channel Estimation for mmWave Intelligent Reflecting Surfaces [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2020
Integrating large intelligent reflecting surfaces (IRS) into millimeter-wave (mmWave) massive multi-input-multi-ouput (MIMO) has been a promising approach for improved coverage and throughput.
Shicong Liu   +4 more
semanticscholar   +1 more source

A Tutorial on Beam Management for 3GPP NR at mmWave Frequencies [PDF]

open access: yesIEEE Communications Surveys and Tutorials, 2018
The millimeter wave (mmWave) frequencies offer the availability of huge bandwidths to provide unprecedented data rates to next-generation cellular mobile terminals.
M. Giordani   +4 more
semanticscholar   +1 more source

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