Results 31 to 40 of about 793,035 (345)
A Transformed Coprime Array With Reduced Mutual Coupling for DOA Estimation of Non-Circular Signals
IEEE Access, 2021 Recently, the design of sparse linear array for direction of arrival (DOA) estimation of non-circular (NC) signals has attracted great attention because the difference and sum co-array offered by non-circularity increases the aperture of virtual linear ...
Fengtong Mei +4 more
doaj +1 more source
A Systematic Analysis Method for 5G Non-Access Stratum Signalling Security
IEEE 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
Electrical switching of an antiferromagnet [PDF]
Science, 2015 Manipulating a stubborn magnet Spintronics is an alternative to conventional electronics, based on using the electron's spin rather than its charge. Spintronic devices, such as magnetic memory, have traditionally used ferromagnetic materials to encode ...
P. Wadley +26 more
semanticscholar +1 more source
Metal Artifact Reduction for X-Ray Computed Tomography Using U-Net in Image Domain
IEEE 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
Engineering 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
Dynamically encircling an exceptional point for asymmetric mode switching [PDF]
Nature, 2016 Physical systems with loss or gain have resonant modes that decay or grow exponentially with time. Whenever two such modes coalesce both in their resonant frequency and their rate of decay or growth, an ‘exceptional point’ occurs, giving rise to ...
J. Doppler +9 more
semanticscholar +1 more source
Constant Weight Space-Time Codes for Dimmable MIMO-VLC Systems
IEEE 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
IEEE 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
A joint resource allocation method for multiple targets tracking in distributed MIMO radar systems
EURASIP 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
IEEE 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