Results 51 to 60 of about 2,822,972 (301)
Design of a Novel Antenna Array Beamformer Using Neural Networks Trained by Modified Adaptive Dispersion Invasive Weed Optimization Based Data [PDF]
, 2013 A new antenna array beamformer based on neural networks (NNs) is presented. The NN training is performed by using optimized data sets extracted by a novel Invasive Weed Optimization (IWO) variant called Modified Adaptive Dispersion IWO (MADIWO).
Cosmas, J +4 more
core +1 more source
Contextual Beamforming: Exploiting Location and AI for Enhanced Wireless Telecommunication Performance [PDF]
arXiv, 2023 The pervasive nature of wireless telecommunication has made it the foundation for mainstream technologies like automation, smart vehicles, virtual reality, and unmanned aerial vehicles. As these technologies experience widespread adoption in our daily lives, ensuring the reliable performance of cellular networks in mobile scenarios has become a ...
arxiv
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
Remote Sensing, 2020 In this paper, a new dedicated multi-channel ionospheric oblique backscatter sounder is described. A miniaturized L-shaped antenna array was employed for the receiving of the oblique backscatter echoes in the present system. Firstly, two typical adaptive
Tongxin Liu +4 more
doaj +1 more source
A Wideband Direct Data Domain Genetic Algorithm Beamforming [PDF]
, 2015 In this paper, a wideband direct data-domain genetic algorithm beamforming is presented. Received wideband signals are decomposed to a set of narrow sub-bands using fast Fourier transform.
Elkamchouchi, H. M., Hassan, M. M.
core +2 more sources
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
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
Adaptive Null Widening Beamforming Algorithm in Spatially Correlated Color Noise
Sensors, 2022 Under the background of spatially correlated color noise, the incidence angle of a jamming signal in a high-speed moving platform rapidly changes, which leads to the degradation of the anti-interference performance and the waveform distortion of the ...
Shijing Xiao, Bin Li, Qing Wang
doaj +1 more source
Semi-blind adaptive beamforming for high-throughput quadrature amplitude modulation systems
, 2010 A semi-blind adaptive beamforming scheme is proposed for wireless systems that employ high-throughput quadrature amplitude modulation signalling. A minimum number of training symbols, equal to the number of receiver antenna arrays elements, are first ...
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core +1 more source