Results 41 to 50 of about 82,705 (221)

Hierarchical Beamforming: Resource Allocation, Fairness and Flow Level Performance

open access: yes, 2018
We consider hierarchical beamforming in wireless networks. For a given population of flows, we propose computationally efficient algorithms for fair rate allocation including proportional fairness and max-min fairness.
Altman, Zwi   +2 more
core   +3 more sources

Design exploration and performance strategies towards power-efficient FPGA-based achitectures for sound source localization [PDF]

open access: yes, 2019
Many applications rely on MEMS microphone arrays for locating sound sources prior to their execution. Those applications not only are executed under real-time constraints but also are often embedded on low-power devices.
Braeken, An   +4 more
core   +1 more source

Joint Wireless Information and Energy Transfer in a K-User MIMO Interference Channel [PDF]

open access: yes, 2013
Recently, joint wireless information and energy transfer (JWIET) methods have been proposed to relieve the battery limitation of wireless devices. However, the JWIET in a general K-user MIMO interference channel (IFC) has been unexplored so far.
Clerckx, Bruno, Park, Jaehyun
core   +3 more sources

Preliminary Results on 3D Channel Modeling: From Theory to Standardization

open access: yes, 2013
Three dimensional beamforming (3D) (also elevation beamforming) is now gaining a growing interest among researchers in wireless communication. The reason can be attributed to its potential to enable a variety of strategies like sector or user specific ...
Altman, Zwi   +4 more
core   +3 more sources

A Machine Learning Adaptive Beamforming Framework for 5G Millimeter Wave Massive MIMO Multicellular Networks

open access: yesIEEE Access, 2022
The goal of this paper is to evaluate the performance of an adaptive beamforming approach in fifth-generation millimeter-wave multicellular networks, where massive multiple-input multiple-output configurations are employed in all active base stations of ...
Spyros Lavdas   +5 more
doaj   +1 more source

Cognitive Beamforming for Multiple Secondary Data Streams With Individual SNR Constraints

open access: yes, 2013
In this paper, we consider cognitive beamforming for multiple secondary data streams subject to individual signal-to-noise ratio (SNR) requirements for each secondary data stream.
Cai, Sheng-Ming, Gong, Yi
core   +1 more source

Experimental Investigation of Distributed Array Adaptive Beamforming for Interference Suppression in UAV Swarms

open access: yesDrones
This paper investigates the use of adaptive beamforming algorithms for communication systems and sensing networks using motion-dynamic distributed random arrays. These distributed arrays include swarms of unmanned aerial vehicles (UAVs) and are formed by
Rio King   +3 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Contextual beamforming: Exploiting location and AI for enhanced wireless telecommunication performance

open access: yesAPL Machine Learning
Beamforming, an integral component of modern mobile networks, enables spatial selectivity and improves network quality. However, many beamforming techniques are iterative, introducing unwanted latency to the system.
Jaspreet Kaur   +7 more
doaj   +1 more source

Impact of Beamforming on the Path Connectivity in Cognitive Radio Ad Hoc Networks

open access: yesSensors, 2017
This paper investigates the impact of using directional antennas and beamforming schemes on the connectivity of cognitive radio ad hoc networks (CRAHNs).
Le The Dung   +4 more
doaj   +1 more source

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