Results 51 to 60 of about 7,523 (232)

A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix [PDF]

, 2004
In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by cosine-modulation, and the broadside ...
Liu, Wei, Weiss, S., Liu, W., Hanzo, L.
core   +1 more source

Optimizing intra-layer data communication with adaptive beamforming for proactive flow control in wireless network-on-chip

EURASIP Journal on Wireless Communications and Networking
WiNoC 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, S. Lokesh, B. Sathyasri   +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 Optimization
The 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, Mehdi Bekrani, Solyman Garousi   +2 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Adaptive nonlinear least bit error-rate detection for symmetrical RBF beamforming

, 2008
A powerful symmetrical radial basis function (RBF) aided detector is proposed for nonlinear detection in so-called rank-deficient multipleantenna assisted beamforming systems. By exploiting the inherent symmetry of the optimal Bayesian detection solution,
Chen, Sheng, Wolfgang, Andreas, Harris, Chris J., Hanzo, Lajos   +3 more
core   +1 more source

Downlink beamforming concepts in UTRA FDD [PDF]

Advances in Radio Science, 2003
This article gives a comparison of beamforming concepts. Adaptive beamforming and fixed beam switching in WCDMA-FDD-mode are compared from a system level perspective, ordinary sectorization (three 120° sectors) serves as a basis for comparison.
M. Schacht, A. Dekorsy, P. Jung
doaj  

Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading

International Journal of Antennas and Propagation, 2017
An approach for null broadening beamforming is proposed based on adaptive variable diagonal loading (VDL) and combined with the covariance matrix taper (CMT) approach, aiming at improving the robustness of adaptive antenna null broadening beamforming ...
Wenxing Li, Yu Zhao, Qiubo Ye, Bin Yang
doaj   +1 more source

Ultrasonic Rainbow: A Meta‐Transducer for Frequency‐Selective Elastic Wave Control via Dithering‐Based Wavenumber Tuning

Advanced Intelligent Systems, EarlyView.
A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha, Jochen Moll, Kilian Tschöke, Carsten Kruska, Sylvia E. Gebhardt, Luca De Marchi   +5 more
wiley   +1 more source

Adaptive Minimum Bit Error Rate Beamforming Assisted QPSK Receiver

, 2004
A novel adaptive beamforming technique is proposed for wireless communication with quadrature phase shift keying signalling based on the minimum bit error rate (MBER) criterion.
S. Chen, Ahmad, N.N., Wolfgang, A., L. Hanzo, A. Wolfgang, Hanzo, L., Chen, S., N.N. Ahmad   +7 more
core   +1 more source

Review on Deep Learning‑Based Adaptive Beamforming for Array Antennas

Shuju Caiji Yu Chuli
With the increasing of array antennas and the growing complexity of anti-jamming， traditional adaptive beamforming methods often suffer from high computational complexity. Deep learning， with its powerful data-driven capabilities， offers a novel approach
XU Zheng, PAN Zihao, WANG Ning, GUO Daoxing   +3 more
doaj   +1 more source