Results 81 to 90 of about 10,056 (178)

Joint User Scheduling and MU-MIMO Hybrid Beamforming Algorithm for mmWave FDMA Massive MIMO System

International Journal of Antennas and Propagation, 2016
The large bandwidth and multipath in millimeter wave (mmWave) cellular system assure the existence of frequency selective channels; it is necessary that mmWave system remains with frequency division multiple access (FDMA) and user scheduling. But for the
Jing Jiang, Deting Kong
doaj   +1 more source

A review on underwater beamforming: Techniques, challenges, and future directions

Journal of Ocean Engineering and Science
This paper comprehensively reviews recent advancements in Underwater Beamforming (UWB) systems, highlighting its pivotal role in underwater communication, sensing, and environmental monitoring.
Ruba Zaheer, Quoc Viet Phung, Iftekhar Ahmad, Asma Aziz, Daryoush Habibi, Yue Rong, Walid K Hasan   +6 more
doaj   +1 more source

Joint temporal-spatial reference beamforming: EIG beamforming

, 2010
Traditional methods for beamforming can be grouped in two families, the time reference beamformer and the spatial reference beamforming. Nevertheless, the increasing demand on receivers for location systems and high bandwidth over frequency selective fading able to properly manage multipath and co-channel interference motivates the need for versatile ...
Lagunas Hernandez, Miguel A., Pérez Neira, Ana Isabel, Vázquez, Miguel Ángel   +2 more
openaire   +1 more source

Ultrasound Computed Tomography Reflection Imaging with Coherence-Factor Beamforming for Breast Tumor Early Detection

Mathematics
Breast cancer is a global health concern, emphasizing the need for early detection. However, current mammography struggles to effectively image dense breasts.
Zuoxun Hou, Ruichen Yuan, Zihao Wang, Xiaorui Wei, Chujian Ren, Jiale Zhou, Xiaolei Qu   +6 more
doaj   +1 more source

Graph Neural Network-Based Unified Beamforming and User Selection for MU-MISO

IEEE Access
Classical beamforming algorithms face challenges such as increased complexity with more users and base station antennas (BSAs), as well as the requirement of accurate channel state information (CSI).
Wooseok Woo, Soyoung Han, Jae Hyun Seo, Hosung Park   +3 more
doaj   +1 more source

Robust Beamforming Technologies for Conformal Array of Small-Scale Platform Based on Covariance Matrix Fitting

水下无人系统学报
To achieve robust detection on small-scale platforms like unmanned undersea vehicles(UUVs), which are characterized by their limited maneuverability and array apertures, various beamforming algorithms were designed by leveraging U-shaped conformal planar
Shiyu GONG, Erzheng FANG, Jianing ZHANG
doaj   +1 more source

Deep learning approach for hybrid beamforming design in MU-MISO mmWave systems

Scientific Reports
Hybrid beamforming is a promising approach to alleviate hardware complexity in multi-user multiple-input single-output (MU-MISO) systems while maintaining high data rate performance.
Ebrahim Ghaith, Tamer Mekkawy, Ahmed A. Abouelfadl, Ashraf Mahran   +3 more
doaj   +1 more source

Enhancing Spectral Efficiency of 6G Downlink Beamforming via Cooperative Multi-Agent Deep Reinforcement Learning. [PDF]

Sensors (Basel)
Al Janaby A, Al-Rizzo H, Qassim Y.
europepmc   +1 more source

BeamNet: Unsupervised Beamforming for ISAC Systems Under Imperfect CSI. [PDF]

Entropy (Basel)
Nimnaka H, Gayan S, Zhang R, Inaltekin H, Poor HV.   +4 more
europepmc   +1 more source

Modified prioritized DDPG algorithm for joint beamforming and RIS phase optimization in MISO downlink systems. [PDF]

Sci Rep
Shukry S, Fahmy Y.
europepmc   +1 more source