Results 41 to 50 of about 27,142 (205)
Perturbation-based Distributed Beamforming for Wireless Relay Networks
, 2008 This paper deals with distributed beamforming techniques for wireless networks with half-duplex amplify-and-forward relays. Existing schemes optimize the beamforming weights based on the assumption that channel state information (CSI) is available at the
Fertl, Peter +2 more
core +1 more source
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
Adaptive Wideband Beamforming Based on Digital Delay Filter
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsA novel adaptive wideband beamforming method is proposed, where beamforming is achieved by LMS based space-time adaptive filtering algorithm. Conventional broadband beamforming requires desired signal to be incident from the broadside i.e.
Zeeshan Ahmad, Song Yaoliang, Qiang Du
doaj +1 more source
Comparison of robust Capon beamforming based on weighted sparse constraints
上海师范大学学报. 自然科学版, 2020 The performance of several Capon adaptive beamforming algorithms which used the weighted sparse constraints were analyzed and compared.These algorithms using the sparse distribution characteristics of the antenna array gain would suppress side lobes ...
LIN Zhen, LI Li, WEI Shuang, LIANG Yan
doaj +1 more source
Beamforming Techniques for Multichannel audio Signal Separation
, 2012 Beamforming is a signal processing technique. It has been studied in many areas such as radar, sonar, seismology and wireless communications, to name but a few.
Adel, Hidri +3 more
core +1 more source
Iterative turbo beamforming for OFDM based hybrid terrestrial-satellite mobile system [PDF]
, 2012 In the context of orthogonal frequency division multiplexing (OFDM)-based systems, pilot-based beamforming (BF) exhibits a high degree of sensitivity to the pilot sub-carriers.
Evans, B.G., Imran, M.A., Khan, A.H.
core +1 more source
Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
EURASIP Journal on Wireless Communications and NetworkingWiNoC establishes itself as a prospective architectural solution which delivers swift communication capabilities to multi-core systems. Multi-layer system efficiency depends on the development of advanced intra-layer communication techniques because data
T. R. Dinesh Kumar +2 more
doaj +1 more source
Robust Beamforming for Ultrasonic Imaging using Wavelet-based Thresholding and Coherence Weighting [PDF]
International Journal of Industrial Electronics, Control and OptimizationThe delay-and-sum (DS) beamforming and delay-weight-and-sum (DWS) beamforming are primary methods in ultrasonic imaging with phased arrays. Total focusing method (TFM) and Minimum Variance (MV) based adaptive beamforming are well-known methods within DS ...
Mozhgan Ehsani +2 more
doaj +1 more source
Symmetric complex-valued RBF receiver for multiple-antenna aided wireless systems
, 2008 A nonlinear beamforming assisted detector is proposed for multiple-antenna-aided wireless systems employing complex-valued quadrature phase shift-keying modulation.
Chen, Sheng, Hanzo, L., Tan, S.
core +1 more source