Results 41 to 50 of about 14,022 (197)

Robust Rank Reduction Algorithm with Iterative Parameter Optimization and Vector Perturbation

Algorithms, 2015
In dynamic propagation environments, beamforming algorithms may suffer from strong interference, steering vector mismatches, a low convergence speed and a high computational complexity.
Peng Li, Jiao Feng, Rodrigo C. de Lamare
doaj   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Adaptive beamforming algorithms with robustness against steering vector mismatch of signals

IET Radar, Sonar & Navigation, 2017
Three novel adaptive beamforming algorithms are developed to mitigate the steering vector (SV) random errors of both the desired signal and interferences.
Jiangbo Liu, Wei Xie, Guan Gui, Qing Zhang, Yanbin Zou, Qun Wan   +5 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Sidelobe Suppression for Capon Beamforming with Mainlobe to Sidelobe Power Ratio Maximization

, 2011
High sidelobe level is a major disadvantage of the Capon beamforming. To suppress the sidelobe, this paper introduces a mainlobe to sidelobe power ratio constraint to the Capon beamforming. it minimizes the sidelobe power while keeping the mainlobe power
Liu, Yipeng, Wan, Qun
core   +1 more source

Robust Adaptive Beamforming: Experimental Results

, 1998
Publication in the conference proceedings of EUSIPCO, Rhodes, Greece ...
Gershman, A.B., Nemeth, E., Bohme, J.F.
openaire   +1 more source

Context Awareness and Human–Robot Interaction Optimization for Museum Intelligent Guide Robot

Advanced Intelligent Systems, EarlyView.
This study presents a context‐aware human–robot interaction framework designed for intelligent museum guide robots. The system features a three‐layer architecture—perception, understanding, and behavior execution—that enables adaptive and meaningful interactions with museum visitors.
Anna Zou, Yue Meng, Shijing Tong
wiley   +1 more source

Virtual covariance matrix reconstruction-based adaptive beamforming for small aperture array.

PLoS ONE, 2023
Recently, many robust adaptive beamforming (RAB) algorithms have been proposed to improve beamforming performance when model mismatches occur. For a uniform linear array, a larger aperture array can obtain higher array gain for beamforming when the inter-
Lin Chang, Hao Zhang, Hua Yang, Tingting Lv, Ning Tang   +4 more
doaj   +1 more source

A Low-Cost Robust Distributed Linearly Constrained Beamformer for Wireless Acoustic Sensor Networks with Arbitrary Topology

, 2018
We propose a new robust distributed linearly constrained beamformer which utilizes a set of linear equality constraints to reduce the cross power spectral density matrix to a block-diagonal form.
Hendriks, Richard C., Heusdens, Richard, Koutrouvelis, Andreas I., Sherson, Thomas W.   +3 more
core   +1 more source

Sleep magnetoencephalography enhances detection and source imaging of seizures and fast oscillations in focal cortical dysplasia

Epilepsia, EarlyView.
Abstract Objective Focal cortical dysplasia (FCD) causes drug‐resistant epilepsy requiring presurgical evaluation. Invasive electroencephalographic (EEG) studies demonstrate that sleep modulates epileptic activity, including interictal epileptiform discharges (IEDs), fast oscillations (FOs) in the beta (14–40 Hz) and gamma (40–80 Hz) frequency bands ...
Marcel Heers, Jawata Afnan, Christoph Braun, Christophe Grova, Dirk‐Matthias Altenmüller, Bernhard J. Steinhoff, Matthias Dümpelmann, Theo Demerath, Horst Urbach, Silke Ethofer, Markus Siegel, Andreas Schulze‐Bonhage, Holger Lerche, Yiwen Li Hegner   +13 more
wiley   +1 more source