Results 91 to 100 of about 2,822,972 (301)
Closed-Loop Wireless Power Transfer with Adaptive Waveform and Beamforming: Design, Prototype, and Experiment [PDF]
arXiv, 2021 In this paper, we design, prototype, and experiment a closed-loop radiative wireless power transfer (WPT) system with adaptive waveform and beamforming using limited feedback. Spatial and frequency domains are exploited by jointly utilizing multi-sine waveform and multi-antenna beamforming at the transmitter in WPT system to adapt to the multipath ...
arxiv
Effect of signal to interference ratio on adaptive beamforming techniques
Journal of King Saud University: Engineering Sciences, 2018 The capability of adaptive antenna array lies in forming higher gain in the user directions and lower gain in the interferer directions. The technique used to produce such radiation pattern by calculating the excitation weights are called the adaptive ...
Smita Banerjee, Ved Vyas Dwivedi
doaj
Robust Adaptive Beamforming Based on Low-Rank and Cross-Correlation Techniques [PDF]
IEEE Transactions on Signal Processing, 2016 This paper presents cost-effective low-rank techniques for designing robust adaptive beamforming (RAB) algorithms. The proposed algorithms are based on the exploitation of the cross-correlation between the array observation data and the output of the ...
H. Ruan, R. D. Lamare
semanticscholar +1 more source
Joint Wireless Information and Energy Transfer with Reduced Feedback in MIMO Interference Channels
, 2014 To determine the transmission strategy for joint wireless information and energy transfer (JWIET) in the MIMO interference channel (IFC), the information access point (IAP) and energy access point (EAP) require the channel state information (CSI) of ...
Clerckx, Bruno, Park, Jaehyun
core +1 more source
International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 210-228, May/June 2025.ABSTRACT Optical satellite communications provide high‐data rates with compact and power efficient payloads that can solve the bottlenecks of RF technologies. Photonic integrated circuits have the potential to reduce the cost, size, weight, and power consumption of satellite laser communications terminals, by integrating all the required photonic ...
Giulio Terrasanta +4 more
wiley +1 more source
Sparsity-Based Non-Stationary Clutter Suppression Technique for Airborne Radar
IEEE Access, 2018 Conventional space-time adaptive processing (STAP) technique can achieve perfect performance when applied to side-looking airborne radar (SLAR), where the clutter is relatively stationary, whereas it suffers significant degradation for non-SLAR due to ...
Keqing Duan +4 more
doaj +1 more source
An adaptive protocol for distributed beamforming
, 2011 We study distributed adaptive beamforming in networks of wireless nodes. In particular, we observe that for the synchronisation of carrier phases, distinct algorithmic configurations are optimal in various environmental settings and propose a protocol that utilises organic computing principles to find optimum parameters.
Sigg, Stephan, Beigl, Michael
openaire +4 more sources
Adaptive Beamforming with a Maximum Negentropy Criterion [PDF]
2008 Hands-Free Speech Communication and Microphone Arrays, 2008 In this paper, we address an adaptive beamforming application in realistic acoustic conditions. After the position of a speaker is estimated by a speaker tracking system, we construct a subband-domain beamformer in generalized sidelobe canceller (GSC) configuration. In contrast to conventional practice, we then optimize the active weight vectors of the
Kumatani, Kenichi +4 more
openaire +4 more sources
Advanced Materials Technologies, Volume 10, Issue 5, March 4, 2025.This paper reviews the state‐of‐the‐art and recent advances in bio‐integrated wireless power and data transfer technologies for flexible bionics, wearable and implantable bioelectronics. The architectures, operating principles, materials, and application technologies are presented in detail.
Massimo Mariello, Christopher M. Proctor
wiley +1 more source
Linear-array photoacoustic imaging using minimum variance-based delay multiply and sum adaptive beamforming algorithm [PDF]
Journal of Biomedical Optics, 2017 . In photoacoustic imaging, delay-and-sum (DAS) beamformer is a common beamforming algorithm having a simple implementation. However, it results in a poor resolution and high sidelobes.
Moein Mozaffarzadeh +4 more
semanticscholar +1 more source