Results 31 to 40 of about 14,022 (197)
Model-Switched Beamformer with Large Dynamic Range
International Journal of Antennas and Propagation, 2014 The strong desired signal will be mitigated due to “self-nulling” for the adaptive beamformer, even if the array calibration is used. The proposed methodology switches the models between phased array and adaptive array.
Zeng Hao +3 more
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Robust adaptive distributed beamforming for energy-efficient network flooding
EURASIP Journal on Wireless Communications and Networking, 2019 In a device-to-device wireless multi-hop communication scenario with resource-constrained devices, the energy efficiency of communication plays a significant role in network design and operation.
Abdelrahman Abdelkader, Eduard Jorswieck
doaj +1 more source
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
An Improved Hybrid Beamforming Algorithm for Fast Target Tracking in Satellite and V2X Communication
Remote Sensing, 2023 Autonomous remote sensing systems establish communication links between nodes. Ensuring coverage and seamless communication in highly dense environments is not a trivial task as localization, separation, and tracking of targets, as well as interference ...
Aral Ertug Zorkun +2 more
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Advanced Science, EarlyView.A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang +11 more
wiley +1 more source
Robust Adaptive Beamforming Based on Worst-Case and Norm Constraint
International Journal of Antennas and Propagation, 2015 A novel robust adaptive beamforming based on worst-case and norm constraint (RAB-WC-NC) is presented. The proposed beamforming possesses superior robustness against array steering vector (ASV) error with finite snapshots by using the norm constraint and ...
Hongtao Li +4 more
doaj +1 more source
Robust adaptive beamforming method for active sonar in single snapshot [PDF]
MATEC Web of Conferences, 2019 Forming narrow beams is a useful way for active sonar to anti-reverberation when it works in the shallow water. High-resolution adaptive beamforming with the performance of narrow beamwidths and low sidelobe levels is a better and more efficient method ...
Sun Xu, Li Ranwei
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Distributionally Robust Adaptive Beamforming
IEEE Transactions on Signal ProcessingAs a fundamental technique in array signal processing, beamforming plays a crucial role in amplifying signals of interest (SoI) while mitigating interference plus noise (IPN). When uncertainties exist in the signal model or the data size of snapshots is limited, the performance of beamformers significantly degrades.
Shixiong Wang, Wei Dai, Geoffrey Ye Li
openaire +2 more sources
Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
Tongxin xuebao, 2013 For the robust adaptive beamforming problem of the gen l signal models, a robust beamforming algorithm based on the worst-case performance optimization with positive semi-definite constraints was proposed.
Ding-jie XU, Rui HE, Feng SHEN
doaj +2 more sources