Results 11 to 20 of about 3,834,565 (106)

Wide Field-of-View Air-to-Water Rolling Shutter-Based Optical Camera Communication (OCC) Using CUDA Deep-Neural-Network Long-Short-Term-Memory (CuDNNLSTM)

Applied Sciences
Nowadays, underwater activities are becoming more and more important. As the number of underwater sensing devices grows rapidly, the amount of bandwidth needed also increases very quickly. Apart from underwater communication, direct communication across the water–air interface is also highly desirable.
Yung-Jie Chen, Yu-Han Lin, Guo-Liang Shih, Chi-Wai Chow, Chien-Hung Yeh   +4 more
openaire   +3 more sources

Optical Camera Communications in Healthcare: A Wearable LED Transmitter Evaluation during Indoor Physical Exercise

Sensors
This paper presents an experimental evaluation of a wearable light-emitting diode (LED) transmitter in an optical camera communications (OCC) system. The evaluation is conducted under conditions of controlled user movement during indoor physical exercise,
Eleni Niarchou, Vicente Matus, Jose Rabadan, Victor Guerra, Rafael Perez-Jimenez   +4 more
doaj   +2 more sources

Digital forensics challenges and readiness for 6G Internet of Things (IoT) networks

WIREs Forensic Science, Volume 5, Issue 6, November/December 2023., 2023
6G Internet of Things networks. Abstract The development of sixth‐generation (6G) wireless communication technology is expected to provide super high‐speed data transmission, and advanced network performance than the current fifth‐generation (5G) and be fully functional by the 2030s.
Alex Olushola Akinbi
wiley   +1 more source

Multispectral Optical camera communication links based on spectral signature multiplexing

IET Optoelectronics, Volume 17, Issue 4, Page 91-100, August 2023., 2023
This paper focuses on using the multispectral cameras' features to take advantage of the light‐emitting diode (LED) behaviour in a novel communication scheme based on spectral signature multiplexing. The thermally induced LED variations can be detected by the multispectral camera to obtain new communication channels from the same device.
Daniel Moreno, Victor Guerra, Julio Rufo, Jose Rabadan, Rafael Perez‐Jimenez   +4 more
wiley   +1 more source

A unilateral 3D indoor positioning system employing optical camera communications

IET Optoelectronics, Volume 17, Issue 4, Page 110-119, August 2023., 2023
This paper investigates the use of a visible light positioning system in an indoor environment to provide a three dimensional (3D) high‐accuracy solution. The proposed system can retrieve the 3D coordinate of the Rx using a combination of the angle of arrival and received signal strength (RSS).
Othman Isam Younus, Neha Chaudhary, Zabih Ghassemlooy, Luis Nero Alves, Stanislav Zvanovec, Dimitrios Pattas, Vasilis K. Papanikolaou   +6 more
wiley   +1 more source

Undersampled Pulse Width Modulation for Optical Camera Communications [PDF]

, 2018
An undersampled pulse width modulation (UPWM) scheme is proposed to enable users to establish a non- flickering optical camera communications (OCC) link. With UPWM, only a digital light emitting diode (LED) driver is needed to send signals using a higher
Luo, P, Paul Anthony Haigh, Haigh, PA, Ghassemlooya, Z, Tong Jiang, Haigh, Paul Anthony, Jiang, T, Zvanovec, S, Luo, Pengfei, Jiang, Tong, Ghassemlooy, Zabih, Zvanovec, Stanislav, Haigh, Paul, Zabih Ghassemlooy, Pengfei Luo, Stanislav Zvanovec   +15 more
core   +2 more sources

An Optical Camera Communication Using Novel Hybrid Frequency Shift and Pulse Width Modulation Technique for Li-Fi

Computation, 2022
With an increase in network-connected devices, the existing Radio Frequency (RF) spectrum is getting highly saturated. Non-RF-based communication systems have recently garnered attention as they can be considered an alternative to RF-based systems for ...
Sanket Salvi, Geetha Vasantha
doaj   +1 more source

Frame recovery using multiple images in rolling shutter based systems

IET Optoelectronics, Volume 17, Issue 4, Page 162-174, August 2023., 2023
An algorithm for decoding identifiers in rolling shutter based communication systems is proposed by the authors, based on reconstructing the original bitstream from multiple frames. The algorithm was validated by simulation for 6‐bit, 8‐bit and 10‐bit codewords, showing an improvement in the recovery probability compared to a baseline algorithm.
Miguel Rêgo, Joaquin Perez, Pedro Fonseca, Luís Nero Alves   +3 more
wiley   +1 more source

I/Q Demodulator Based Optical Camera Communications

IEEE Photonics Journal, 2022
Visible light communications achieve wireless communications using light sources such as lighting fixtures and electric signboards. The light sources need to blink at high speed to avoid flickering. However, the blinking frequency is much higher than the
Hiroaki Matsunaga, Tomohiro Yendo, Wataru Kihara, Yoshifumi Shiraki, Takashi G. Sato, Takehiro Moriya   +5 more
doaj   +1 more source

Performance evaluation technique for screen‐to‐camera‐based optical camera communications

IET Optoelectronics, Volume 17, Issue 4, Page 184-193, August 2023., 2023
The paper carries out an experimental investigation for data transmission in optical camera communication under different conditions. Abstract The increasing development and utilisation of optical camera communications offer an excellent opportunity for the implementation of the smartphone‐to‐smartphone‐based visible light communications (S2SVLC ...
Vaigai Nayaki Yokar, Hoa Le‐Minh, Zabih Ghassemlooy, Wai Lok Woo   +3 more
wiley   +1 more source