Results 11 to 20 of about 7,034 (308)

Scalable Graph Convolutional Networks With Fast Localized Spectral Filter for Directed Graphs

open access: yesIEEE Access, 2020
Graph convolutional neural netwoks (GCNNs) have been emerged to handle graph-structured data in recent years. Most existing GCNNs are either spatial approaches working on neighborhood of each node, or spectral approaches based on graph Laplacian ...
Chensheng Li   +4 more
doaj   +1 more source

Sample Efficient Reinforcement Learning Method via High Efficient Episodic Memory

open access: yesIEEE Access, 2020
Reinforcement Learning (RL), especially Deep Reinforcement Learning (DRL), has made great progress in many areas, such as robots, video games and driving.
Dujia Yang   +4 more
doaj   +1 more source

Robust and Low-Overhead Hybrid Beamforming Design With Imperfect Phase Shifters in Multi-User Millimeter Wave Systems

open access: yesIEEE Access, 2020
Phase shifters, often applied for analog beamforming in hybrid millimeter wave systems, are usually imperfect with random phase and gain errors brought by manufacture imperfections.
Wendi Wang   +3 more
doaj   +1 more source

Noise Analysis and Modulation Optimization for Nonlinear Visible Light Communication System With Signal-Dependent Noise

open access: yesIEEE Photonics Journal, 2023
This article investigates the characteristics of the signal-dependent noise (SDN) and corresponding modulation design in nonlinear visible light communication (VLC) systems.
Jiaqi Wei   +3 more
doaj   +1 more source

Simultaneous Channel Estimation and Data Detection Based on Superimposed Training for Many Access MIMO System in Uplink

open access: yesIEEE Access, 2020
Massive Multiple Input Multiple Output (MIMO) has great potential to improve spectrum efficiency in the fifth generation (5G) wireless communication systems.
Kun Zhang, Wendi Wang, Huarui Yin
doaj   +1 more source

Optical Wireless Cabin Communication System [PDF]

open access: yes2019 IEEE Conference on Standards for Communications and Networking (CSCN), 2019
Offering a high data rate to users inside the cabin is attractive for the aircraft building companies. This paper presents an optical wireless system that uses visible light for transmitting data. The reading light for each seat is used as a transmitter in this work to offer high data rates.
Alsulami, Osama Zwaid   +2 more
openaire   +2 more sources

Experimental Investigation of Underwater Optical Wireless Communication for Correlated SIMO Channel Under Temperature-Induced Turbulence

open access: yesIEEE Photonics Journal, 2023
Turbulence is an intractable issue for underwater optical wireless communication (UOWC). In this paper, the effects of temperature-induced turbulence on the UOWC system with correlated single-input multiple-output (SIMO) channel are comprehensively ...
Weijie Liu   +3 more
doaj   +1 more source

Improved Synchronization Scheme for the Photon- Counting-Based Underwater Optical Wireless Communication System

open access: yesIEEE Photonics Journal, 2023
To address existing issues in conventional correlation method, we propose an improved synchronization method for photon-counting-based underwater optical wireless communication system employing on-off keying modulation.The proposed method jointly ...
Nuo Huang   +3 more
doaj   +1 more source

Iteration Time Prediction for CNN in Multi-GPU Platform: Modeling and Analysis

open access: yesIEEE Access, 2019
Neural networks, as powerful models for many difficult learning tasks, have created an increasingly heavy computational burden. More and more researchers focus on how to optimize the training time, and one of the difficulties is to establish a general ...
Ziqian Pei   +4 more
doaj   +1 more source

Indoor 3-Dimensional Visible Light Positioning Based on Smartphone Camera: Error Metric and LED Layout Optimization

open access: yesIEEE Photonics Journal, 2022
We consider 3-dimensional (3D) visible light positioning (VLP) based on smartphone camera in an indoor scenario. Based on the positioning model in the quantized pixel-domain, we characterize the 3D normalized positioning error metric (NPEM) through the ...
Jiaojiao Xu, Nuo Huang, Chen Gong
doaj   +1 more source

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