Results 41 to 50 of about 328,962 (374)
Rayleigh wave manipulation based on phase shift between two periodic surface corrugations
Results in Physics, 2023 The propagation of Rayleigh waves along solid surfaces has attracted great attention due to its ubiquity in seismic waves, non-destructive evaluation, acoustic surface wave devices, and so on.
Qiao-Mu Zhang +6 more
doaj +1 more source
Multiband Spectrum Access: Great Promises for Future Cognitive Radio Networks [PDF]
, 2014 Cognitive radio has been widely considered as one of the prominent solutions to tackle the spectrum scarcity. While the majority of existing research has focused on single-band cognitive radio, multiband cognitive radio represents great promises towards ...
Ghaith Hattab +2 more
core +1 more source
Feature Fusion and Adversary Occlusion Networks for Object Detection
IEEE Access, 2019 Current object detection techniques have difficulties in detecting small objects and a low level of accuracy in detecting occluded objects. To solve these problems, this paper proposes an object detection framework named FFAN which is based on Faster R ...
Guang Han +4 more
doaj +1 more source
Low-Complexity Robust Adaptive Beamforming Based on INCM Reconstruction via Subspace Projection
Sensors, 2021 Adaptive beamforming is sensitive to steering vector (SV) and covariance matrix mismatches, especially when the signal of interest (SOI) component exists in the training sequence.
Yanliang Duan +3 more
doaj +1 more source
Ultra Wideband Indoor Positioning Technologies: Analysis and Recent Advances
Italian National Conference on Sensors, 2016 In recent years, indoor positioning has emerged as a critical function in many end-user applications; including military, civilian, disaster relief and peacekeeping missions. In comparison with outdoor environments, sensing location information in indoor
A. Alarifi +6 more
semanticscholar +1 more source
Adapting Dynamic Appearance for Robust Visual Tracking
IEEE Access, 2017 This paper designs a robust discriminative tracking method based on correlation filter and key point matching, the highlight of which is the ability to adapt appearance changes.
Guang Han +4 more
doaj +1 more source
Practical Modeling and Beamforming for Intelligent Reflecting Surface Aided Wideband Systems [PDF]
IEEE Communications Letters, 2020 Intelligent reflecting surface (IRS) has emerged as a revolutionizing solution to enhance wireless communications by intelligently changing the propagation environment. Prior studies on IRS are based on an ideal reflection model with a constant amplitude
Wenhao Cai +3 more
semanticscholar +1 more source
Joint beamforming and power control algorithm for cognitive MIMO broadcast channels via game theory
EURASIP Journal on Wireless Communications and Networking, 2017 In this paper, we present a game-theoretic approach for the purpose of deriving the problem of joint beamforming and power control in cognitive radio (CR) multiple-input multiple-output (MIMO) broadcast channels (CR MIMO-BCs), where the primary users ...
Shunlan Zhang, Ju Ni, Qing Peng
doaj +1 more source
Annals of Otology and Neurotology, 2018 AbstractTraditional tympanometry done with 226 Hz probe tone frequency has some inherent defects and limitations due to which it does not give a very true picture of the middle ear status, and tympanometric findings are often very deceptive. It is not uncommon for otologists to find that on opening the middle ear, the pathology in the middle ear is ...
Nilotpal Dutta, Anirban Biswas
openaire +1 more source
Spatial- and Frequency-Wideband Effects in Millimeter-Wave Massive MIMO Systems [PDF]
IEEE Transactions on Signal Processing, 2017 When there are a large number of antennas in massive MIMO systems, the transmitted wideband signal will be sensitive to the physical propagation delay of electromagnetic waves across the large array aperture, which is called the spatial-wideband effect ...
Bolei Wang +4 more
semanticscholar +1 more source