Results 31 to 40 of about 35,290,266 (224)

Using of Deep Learning in Beamforming Antenna Array

Wasit Journal of Engineering Sciences
Digital beamforming (DBF) is a crucial technology for large antenna arrays, offering precise control over beam steering. This research introduces a novel method to enhance millimeter wave transmission by incorporating DBF with long-term memory (LSTM ...
Ali Naji, Thamer M. Jamel M. Jamel, Hassan F. khazaal   +2 more
doaj   +1 more source

Cross‐scale Material‐Structure Synergy for 2D Metamaterials: Toward Customizable Intelligent Electromagnetic Manipulation in Multiphysics Fields

Advanced Science, EarlyView.
Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang, Xing Yang, Liping Liu, Yang Peng, Yangyang Wang, Hualiang Lv   +5 more
wiley   +1 more source

An Efficient Hybrid Beamforming Design for Massive MIMO Receive Systems via SINR Maximization Based on an Improved Bat Algorithm

IEEE Access, 2019
Hybrid analog and digital (HAD) beamforming has been recently receiving considerable deserved attention for practical implementation on the large-scale antenna systems.
Mohammed A. Almagboul, Feng Shu, Yaolu Qin, Xiaobo Zhou, Jin Wang, Yuwen Qian, Kingsley Jun Zou, Abdeldime Mohamed Salih Abdelgader   +7 more
doaj   +1 more source

Advanced Hybrid Beamforming Technique in MU-MIMO Systems

Applied Sciences, 2020
This paper proposes a high performance wireless commmunication technology in MU-MIMO systems. The millimeter wave (mmWave) communication technology was considered for the future wireless communication systems such as the fifth-generation new radio (5G NR)
Seong-Joon Shim, Seulgi Lee, Won-Seok Lee, Jae-Hyun Ro, Jung-In Baik, Hyoung-Kyu Song   +5 more
doaj   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

Digital Beamforming Techniques for Spaceborne Radar Remote Sensing [PDF]

, 2006
This paper introduces the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar. The combination of this technique with digital beamforming on receive enables a new generation of SAR systems with improved ...
Moreira, Alberto, Gebert, Nicolas, Krieger, Gerhard   +2 more
core  

A 64-Element 28 GHz Digital Beamformer Based on Tileable Synchronized Distributed Beamforming Chiplets

IEEE Open Journal of the Solid-State Circuits Society
A tileable 16-element, 4-beam, 28 GHz digital beamforming chiplet communicates over a power-efficient, low-latency Streaming-Advanced Interface Bus (AIB) data link to distribute digital beamforming processing across multiple chiplets.
Christine Weston, Rundao Lu, Zhengqi Xu, Hao Yu, Daniel Lambalot, Michael P. Flynn   +5 more
doaj   +1 more source

Optimal Hybrid Beamforming Design for Millimeter-Wave Massive Multi-User MIMO Relay Systems

IEEE Access, 2019
As a promising technology in the next generation mobile network, millimeter-wave (mmWave) communication can mitigate the spectrum crunch of improving the network capacity by exploiting the large underutilized spectrum bands of the mmWave frequencies. The
Yang Zhang, Jianhe Du, Yuanzhi Chen, Meng Han, Xingwang Li   +4 more
doaj   +1 more source

A low‐power and area‐efficient ultrasound receiver using beamforming successive approximation register analog‐to‐digital converter with capacitive digital‐to‐analog converter combined delay cell structure for 3‐D imaging systems

Electronics Letters, 2022
The authors present a low‐power area‐efficient subarray beamforming receiver (RX) structure for a miniaturized 3‐D ultrasound imaging system. Given that the delay‐and‐sum (DAS) and digitization functions consume most of the area and power in the receiver,
Seungah Lee, Soohyun Yun, Joonsung Bae
doaj   +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, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source