Results 151 to 160 of about 2,822,972 (301)

Tri-timescale Beamforming Design for Tri-hybrid Architectures with Reconfigurable Antennas [PDF]

open access: yesarXiv
Reconfigurable antennas possess the capability to dynamically adjust their fundamental operating characteristics, thereby enhancing system adaptability and performance. To fully exploit this flexibility in modern wireless communication systems, this paper considers a novel tri-hybrid beamforming architecture, which seamlessly integrates pattern ...
arxiv  

Universal Deep Beamformer for Variable Rate Ultrasound Imaging [PDF]

open access: yesarXiv, 2019
Ultrasound (US) imaging is based on the time-reversal principle, in which individual channel RF measurements are back-propagated and accumulated to form an image after applying specific delays. While this time reversal is usually implemented as a delay-and-sum (DAS) beamformer, the image quality quickly degrades as the number of measurement channels ...
arxiv  

Robust Adaptive Beamforming Based on Worst-Case and Norm Constraint

open access: yesInternational 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

Fast adaptive blind beamforming technique for cyclostationary signals [PDF]

open access: green, 2003
Yuxin Chen   +3 more
openalex   +1 more source

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