Results 21 to 30 of about 296 (147)
Sandstorm effect on experimental optical camera communication
, 2021 International audienceSandstorms can severely affect outdoor Optical Wireless Communications (OWC) reliability by diminishing large regions' visibility.
Rabadan, Jose +5 more
core +2 more sources
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 +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 +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 +15 more
core +3 more sources
Exposure Synchronization in Optical Camera Communications for Time Division Multiplexing
IEEE Photonics Journal, 2023 Optical camera communication (OCC) is a type of visible light communication that employs a camera as the receiver. Various flicker-free OCC methods using a general-purpose low-frame rate camera have been proposed.
Hiroaki Matsunaga +3 more
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 +3 more
wiley +1 more source
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
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 +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 +5 more
doaj +1 more source
IEEE Access, 2023 This paper outlines the concept of a multilevel bipolar on-off keying hybrid optical wireless communication (OWC) system using a single light-emitting diode (LED) as a transmitter as well as photodiode and camera-based receivers for versatile indoor ...
Shivani Rajendra Teli +5 more
doaj +1 more source