Results 1 to 10 of about 2,136,839 (361)

A Systematic Analysis Method for 5G Non-Access Stratum Signalling Security

open access: yesIEEE Access, 2019
This paper proposes a systematic analysis method for 5G Non-Access Stratum Signalling security based on formal analysis, which has identified 10 new 5G protocol vulnerabilities, and an improved PKI security mechanism targeted at eliminating these ...
Xinxin Hu   +5 more
doaj   +1 more source

Metal Artifact Reduction for X-Ray Computed Tomography Using U-Net in Image Domain

open access: yesIEEE Access, 2019
Metal artifacts seriously degrade the quality of the CT data and bring great difficulties to subsequent image processing and analysis, which nowadays become a great concern in X-ray CT applications.
Linlin Zhu   +5 more
doaj   +1 more source

A highly selective tri‐band bandpass‐to‐bandstop filter with the third band independently tunable

open access: yesEngineering Reports, 2022
A highly selective tri‐band bandpass (BP)‐to‐bandstop (BS) filter with the third tunable band and the other two fixed ones is proposed in this article. This filter is based on a novel crossed resonator that is composed of a two‐end‐open UIR with an open ...
Hong Yang   +6 more
doaj   +1 more source

Constant Weight Space-Time Codes for Dimmable MIMO-VLC Systems

open access: yesIEEE Photonics Journal, 2020
Visible light communication(VLC), which combines communication and illumination, is regarded as a potential wireless communication. For illumination requirements of VLC systems, dimming control is a significant function.
Jia-Ning Guo   +4 more
doaj   +1 more source

A joint resource allocation method for multiple targets tracking in distributed MIMO radar systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2018
In order to simultaneously improve system performance and resource utilization of distributed multiple-input multiple-output (MIMO) radar systems, a joint resource allocation method is proposed to address the velocity estimation problem for multiple ...
Xiyu Song   +3 more
doaj   +1 more source

A Parameter Division Based Method for the Geometrical Calibration of X-Ray Industrial Cone-Beam CT

open access: yesIEEE Access, 2018
For X-ray cone-beam computed tomography (CBCT), non-calibrated system geometry causes indistinct and blurring artifacts in reconstructed images, which impacts on the image quality badly.
Kai Xiao   +5 more
doaj   +1 more source

Artificial Noise Aided Hybrid Analog-Digital Beamforming for Secure Transmission in MIMO Millimeter Wave Relay Systems

open access: yesIEEE Access, 2019
Millimeter wave (mm-wave) communications, especially mm-wave relay systems, have been considered as a key technology for next-generation wireless networks due to the rich spectrum resources.
Shaoyu Wang   +5 more
doaj   +1 more source

A Two-Layer Secure Quantization Algorithm for Secret Key Generation With Correlated Eavesdropping Channel

open access: yesIEEE Access, 2019
When the eavesdropping channel has a certain correlation with the legitimate channel, the physical layer key is susceptible to eavesdroppers. To ensure the security of the secret key, we propose a two-layer secure (TLS) quantization algorithm in this ...
Henglei Jin   +5 more
doaj   +1 more source

Resource Allocation for Secure Communication in $K$ -Tier Heterogeneous Cellular Networks: A Spatial-Temporal Perspective

open access: yesIEEE Access, 2018
Resource allocation in secure communication is of primary importance due to the fact that the next-generation wireless network (5G) aims to achieve high spectral efficiency and a high level of security.
Bing Wang   +5 more
doaj   +1 more source

Configuring Reconfigurable Intelligent Surface for Parallel MIMO Visible Light Communications with Asymptotic Capacity Maximization

open access: yesApplied Sciences, 2022
As an emerging technology, reconfigurable intelligent surface (RIS) has attracted increasing attention due to the ability to configure the wireless propagation environment.
Qi Wu   +4 more
doaj   +1 more source

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