Results 61 to 70 of about 1,295,659 (215)

History of acoustic beamforming [PDF]

, 2006
The development of the beamforming method (also called microphone antenna, phased array of microphones, acoustic telescope, or acoustic camera) is reviewed in this paper.
Michel, U., Ulf Michel
core  

An Efficient Scheme for Broadband Adaptive Beamforming [PDF]

, 1999
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 ...
S. Weiss, I.K. Proudler, Weiss, S., R.W. Stewart, Schabert, M, Hoffman, M W, Stewart, R.W., Stewart, R W, M.W. Hoffman, Schabert, Marion, Hoffman, Michael, Weiss, Stephan, Proudler, I., Weiss, S, Schabert, M., Proudler, I K, M. Schabert, Hoffman, M.W., Stewart, Robert   +18 more
core   +1 more source

Spectral Efficiency of mmWave Massive MIMO Systems with Hybrid Beamforming

Wasit Journal of Engineering Sciences
Millimeter wave communications (mmWave) has been considered a key enabling technique for 5G systems since it offers orders of magnitude more spectrum than current frequency bands.
Sajjad Kadhim, Hasan Khazaal, Hamed Al-Raweshidy, Ismail Hburi, Ruwa Mohammed, Asmaa Aliwy   +5 more
doaj   +1 more source

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

IET Communications, 2021
This paper presents a simple and robust hybrid combiner for the multiuser massive multiple‐input multiple‐output (MIMO) uplink. The hybrid beamforming is used in massive MIMO systems to reduce the number of radio frequency chains.
Irfan Ahmed, Hedi Khammari, Fahad Alraddady   +2 more
doaj   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Multi-user hybrid analogue/digital beamforming for relatively large-scale antenna systems

, 2014
Power consumption and costs of analogue front-end (AFE) chains are often not negligible for large-scale antenna array systems. A low-complexity hardware architecture is to use a number of AFE chains that are less than the number of antennas.
Xiang, Wei, Li, Nanxi, Geng, Jian, Wei, Zaixue, Yang, Dacheng   +4 more
core   +1 more source

Deep Learning-based Compensation for Doppler Shifts in Hybrid Beamforming for mmWave Communication

Journal of Telecommunications and Information Technology
Millimeter-wave (mmWave) communication is a key enabler of 5G and future wireless systems, providing vast bandwidth for high-speed data transfers.
Kartik Ramesh Patel, Sanjay Dasrao Deshmukh   +1 more
doaj   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Digital beamforming and multidimensional waveform encoding for sapceborne radar remote sensing [PDF]

, 2007
This paper introduces the innovative concept of multidimensional waveform encoding for space-borne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new generation of SAR systems with ...
Moreira, Alberto, Gebert, Nicolas, Krieger, Gerhard   +2 more
core  

Robust adaptive beamforming using a Bayesian steering vector error model [PDF]

, 2013
We propose a Bayesian approach to robust adaptive beamforming which entails considering the steering vector of interest as a random variable with some prior distribution.
Bidon, Stéphanie, Besson, Olivier
core   +1 more source