Results 41 to 50 of about 2,376 (139)

The First Study of MIMO Scheme Within Rolling-shutter Based Optical Camera Communications [PDF]

, 2020
In this paper, we propose the first study of MIMO (multiple-input multiple-output) scheme using a simplified design of MIMO transmitter (Tx) based on grouping of light-emitting diodes (LED) within an array for flicker-free transmission in optical camera ...
Ghassemlooy, Zabih, Matus, Vicente, Perez-Jimenez, Rafael, Teli, Shivani Rajendra, Vitek, Stanislav, Zvanovec, Stanislav   +5 more
core   +1 more source

Investigating the angular distortion impact on vehicular optical camera communication (OCC) systems

Optics Express
Optical camera communication (OCC) shows promise for optical wireless communication (OWC) in vehicular networks. However, vehicle mobility-induced angular distortions hinder system throughput by degrading non-isotropic vehicular OCC channel gain. Few of the prior works have ever made a comprehensive analysis of their impact, especially based on the ...
Anqi, Liu, Wenxiao, Shi, Majid, Safari, Wei, Liu   +3 more
openaire   +2 more sources

Radio Scintillation and Gravity Wave Characteristics in the Venusian Atmosphere: Insights From Akatsuki Radio Occultation

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract We investigated the relationship between radio scintillations—short‐term fluctuations in radio signal intensity—and temperature fluctuations, both observed in vertical profiles from JAXA's Akatsuki radio occultation. Our results indicate that the radio scintillations and the temperature fluctuations are each strongly related to static ...
Katsuyuki Noguchi, Aika Hagino, Hiroki Ando, Takeshi Imamura, Silvia Tellmann, Martin Pätzold   +5 more
wiley   +1 more source

Evaluation of Pulse‐Shaped Waveform Modulation for Event Camera‐Based OCC Systems

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This study presents an event camera‐based optical camera communication (OCC) system using a novel pulse‐shaped waveform modulation to exploit the camera's high temporal resolution and sensitivity. The system achieves error‐free links under controlled indoor conditions, with a bit error rate (BER) below 3.13 ×$\times$ 10−3$^{-3}$ at data rates of 100 Hz.
Jaime Aranda Cubillo, Victor Guerra, Cesar Azurdia‐Meza, Jose Rabadan, Rafael Perez‐Jimenez   +4 more
wiley   +1 more source

Optical-RoI-Signaling for Vehicular Communications

IEEE Access, 2019
This paper introduces a new hybrid waveform for optical wireless communication (OWC)/optical camera communication (OCC) systems and discusses the technical considerations of these systems.
Minh Duc Thieu, Tung Lam Pham, Trang Nguyen, Yeong Min Jang   +3 more
doaj   +1 more source

CNN‐Based Human Detection and Identification in Indoor Optical Camera Communication Systems Using a Wearable LED Strip

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
In this paper, we present an optical camera communication (OCC) system utilising a deep learning for indoor communication and monitoring with wearable LED strips and cameras. Specifically, we employ the YOLOv8 object detection model, based on convolutional neural networks (CNNs), to reliably detect a yellow safety jacket equipped with an LED strip in ...
Eleni Niarchou, Atiya Fatima Usmani, Vicente Matus, Jose Rabadan, Victor Guerra, Luis Nero Alves, Rafael Perez‐Jimenez   +6 more
wiley   +1 more source

Experimental Demonstration of 32‐PAM Optical Camera Communication Using a Low Cost and a High Cost Camera

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
We experimentally demonstrate the feasibility of using up to 32‐PAM in rolling shutter based optical camera communication. A decoding algorithm focused on circumventing the hardware limitations is proposed and the performance of two different cameras is compared.
Miguel Rêgo, Alexis A. Dowhuszko, Pedro Fonseca, Luís Nero Alves   +3 more
wiley   +1 more source

Time Span of an Image Frame Using a CMOS Sensor in Rolling Shutter‐Based Optical Camera Communications

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
In this paper, the use of CMOS image sensors as receivers in a rolling shutter optical camera communication system is addressed, analysing the internal working principles that dominate the registration of the incoming light signals and the digital image acquisition.
Raul Zamorano‐Illanes, Zabih Ghassemlooy, Xicong Li, Othman Younus, Stanislav Zvánovec, Ismael Soto   +5 more
wiley   +1 more source

ISEV2023 Abstract Book

, 2023
Journal of Extracellular Vesicles, Volume 12, Issue S1, May 2023.
wiley   +1 more source

Network convergence and QoS for future multimedia services in the VISION project [PDF]

, 2012
The emerging use of real-time 3D-based multimedia applications imposes strict quality of service (QoS) requirements on both access and core networks.
Agrawal, Amador Pozo, Antoine De Poorter, Antonio Marqués, Bellavista, Borja Iribarne, Buono, Callegati, Chatterjee, Guillem Hernández-Sola, Juan Rodríguez, Liang, Lorena Calavia, Luis Pérez, Luis Velasco, Pedro Capelastegui, Pérez, Song, Stankiewicz, Vidal   +19 more
core   +3 more sources