Results 41 to 50 of about 2,822,972 (301)
Sensors, 2011 This paper presents an acoustic noise cancelling technique using an inverse kepstrum system as an innovations-based whitening application for an adaptive finite impulse response (FIR) filter in beamforming structure.
Jinsoo Jeong
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Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]
, 2011 Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Besson, Olivier +2 more
core +1 more source
Sensors, 2018 Dual-polarized sensitive arrays (DPSAs) with the space⁻time-polarization adaptive processing (STPAP) technique, which employs the polarization domain as well as the space domain and time domain to filter out interferences, can cancel a larger ...
Haiyang Wang +3 more
doaj +1 more source
Robustness Beamforming Algorithms [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2014 Adaptive beamforming methods are known to degrade in the presence of steering vector and covariance matrix uncertinity. In this paper, a new approach is presented to robust adaptive minimum variance distortionless response beamforming make robust against
Sajad Dehghani, Naser Parhizgar
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Adaptive Beamforming Design for mmWave RIS-Aided Joint Localization and Communication [PDF]
2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2019 The concept of reconfigurable intelligent surface (RIS) has been proposed to change the propagation of electromagnetic waves, e.g., reflection, diffraction, and refraction.
Jiguang He +4 more
semanticscholar +1 more source
Fast and robust adaptive beamforming method based on complex-valued RBF neural network
The Journal of Engineering, 2019 The adaptive beamforming is one of the key techniques for array signal processing. However, the matrix inversion operation in the existing methods will cost a large amount of computational complexity, which results in poor real-time processing ability ...
Yuqing Li, Xiaopeng Yang, Feifeng Liu
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IRS-Aided WPCNs: A New Optimization Framework for Dynamic IRS Beamforming [PDF]
arXiv, 2021 In this paper, we propose a new dynamic IRS beamforming framework to boost the sum throughput of an intelligent reflecting surface (IRS) aided wireless powered communication network (WPCN). Specifically, the IRS phase-shift vectors across time and resource allocation are jointly optimized to enhance the efficiencies of both downlink wireless power ...
arxiv
New Designs on MVDR Robust Adaptive Beamforming Based on Optimal Steering Vector Estimation [PDF]
IEEE Transactions on Signal Processing, 2018 The robust adaptive beamforming design problem based on estimation of the signal-of-interest (SOI) steering vector is considered in the paper. The common criteria to find the best estimate of the steering vector are the beamformer output signal-to-noise ...
Yongwei Huang +2 more
semanticscholar +1 more source
Beamforming Algorithm of LEO Satellite Communication System
天地一体化信息网络, 2022 The rapid development of broadband satellite internet has brought satellite communication into a new era.The establishment of large-scale low-orbit satellite constellations has gradually saturated spectrum resources, and the high overlap in frequency use
Haiwang WANG +5 more
doaj +2 more sources
An efficient scheme for broadband adaptive beamforming [PDF]
Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020), 2003 This paper introduces an oversampled subband approach to linearly constrained minimum variance adaptive broadband beamforming. This method is motivated by the considerable reduction in computation over fullband implementation and resulting large computational complexity when fullband beamformers with high spatial and spectral resolution are required ...
Weiss, S. +4 more
openaire +4 more sources