Results 31 to 40 of about 2,822,972 (301)
3D Super-Resolution Ultrasound with Adaptive Weight-Based Beamforming [PDF]
, 2022 Super-resolution ultrasound (SRUS) imaging through localising and tracking sparse microbubbles has been shown to reveal microvascular structure and flow beyond the wave diffraction limit. Most SRUS studies use standard delay and sum (DAS) beamforming, where large main lobe and significant side lobes make separation and localisation of densely ...
arxiv +1 more source
Broadband Beamforming Using the Least Square Method Improved via Adaptive Diagonal Loading [PDF]
Journal of Electromagnetic Engineering and Science, 2023 The least square method (LSM) is a commonly used beamforming method. However, it limits the beamforming frequency bandwidth and is vulnerable to noise; therefore, diagonal loading is used to overcome these limitations.
Euiho Shin +4 more
doaj +1 more source
Signal and System Design for Wireless Power Transfer : Prototype, Experiment and Validation [PDF]
, 2020 A new line of research on communications and signals design for Wireless Power Transfer (WPT) has recently emerged in the communication literature. Promising signal strategies to maximize the power transfer efficiency of WPT rely on (energy) beamforming,
Clerckx, Bruno +2 more
core +2 more sources
UTHM water quality classification based on sub index [PDF]
, 2020 River or stream at their source is unpolluted, but as water flow downstream, the river or lake is receiving point and non-point pollutant source. Ammoniacal nitrogen (NH3- N) and suspended solids (SS) strongly influences the dynamics of the dissolved ...
Johari, A. H. +2 more
core +1 more source
Multi-Rank Adaptive Beamforming
IEEE/SP 13th Workshop on Statistical Signal Processing, 2005, 2005 This paper presents a multi-rank generalization of the Capon beamformer to accommodate model mismatch in situations where the unknown signal of interest lies in a multidimensional subspace. By expanding the beamforming subspace robustness (or diversity) is achieved at the expense of resolution.
Scharf, Louis L. +2 more
openaire +4 more sources
Adaptive beamforming in the ocean. [PDF]
The Journal of the Acoustical Society of America, 1991 In the nonstationary ocean acoustic environment, the temporal coherence of the noise field may be substantially shorter than the time required to calculate the weights in frequency-domain adaptive beamformers with large numbers of degrees of freedom.
Craig Poling +3 more
openaire +2 more sources
IEEE Access, 2020 An augmented coprime array systematically employs two sparse subarrays to produce a large-scale difference co-array with attractive merits, such as enhanced degrees of freedom (DOFs) and enlarged array aperture, whereas the interleaved subarrays are ...
Kun Zhang +6 more
semanticscholar +1 more source
Adaptive Dereverberation, Noise and Interferer Reduction Using Sparse Weighted Linearly Constrained Minimum Power Beamforming [PDF]
, 2023 Interfering sources, background noise and reverberation degrade speech quality and intelligibility in hearing aid applications. In this paper, we present an adaptive algorithm aiming at dereverberation, noise and interferer reduction and preservation of binaural cues based on the wBLCMP beamformer.
arxiv +1 more source
Fast Adaptive Beamforming with Smart Antenna for Radio Frequency Repeater
MATEC Web of Conferences, 2016 We present a fast adaptive beamforming null algorithm with smart antenna for Radio Frequency Repeater (RFR). The smart antenna system is realized by a Direction Of Arrival (DOA) Estimator, whose output is used by an adaptive beamforming algorithm to ...
Wang Chaoqun, Wei Guohua, Wang Teng
doaj +1 more source
Adaptive Antenna Array Assisted Dynamic Channel Allocation Techniques [PDF]
, 2001 —The performance of base station adaptive antenna arrays (AAAs) is investigated in conjunction with fixed channel allocation (FCA) and dynamic channel allocation (DCA) schemes.
Blogh, J.S., Cherriman, P.J., Hanzo, L.
core +1 more source