Results 21 to 30 of about 2,376 (139)
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
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
Non-line-of-sight 2 × N indoor optical camera communications [PDF]
, 2018 We propose, for the first time to the best of our knowledge, a novel non-line-of-sight ...
Hassan, Navid +4 more
core +4 more sources
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
Optical Camera Communications: Principles, Modulations, Potential and Challenges [PDF]
, 2020 Optical wireless communications (OWC) are emerging as cost-effective and practical solutions to the congested radio frequency-based wireless technologies. As part of OWC, optical camera communications (OCC) have become very attractive, considering recent
Cahyadi, Willy Anugrah +3 more
core +2 more sources
A Simplified Model for the Rolling Shutter Based Camera in Optical Camera Communications [PDF]
, 2019 A simplified model of the camera for optical camera communications (OCC) based on the rolling shutter effect is proposed and experimentally verified. In OCC, the key parameters are the exposure time, which is proportional to the DC gain and inversely ...
Burton, Andrew +5 more
core +2 more sources
Verification of Applicability of 90 GHz Band Millimeter‐Wave for Obstacle Detection to Railway
IEEJ Transactions on Electrical and Electronic Engineering, Volume 18, Issue 6, Page 960-969, May 2023., 2023 Abstract Obstacles on railway tracks are a factor hindering safe and stable operation. For this reason, obstacle detection systems have been introduced at level crossings, slopes and under platforms. However, they have been introduced only in limited sections for limited applications.
Kazuki Nakamura +8 more
wiley +1 more source
Computational Intelligence and Neuroscience, Volume 2023, Issue 1, 2023., 2023 Computational models of emotions can not only improve the effectiveness and efficiency of human‐robot interaction but also coordinate a robot to adapt to its environment better. When designing computational models of emotions for socially interactive robots, especially for robots for people with special needs such as autistic children, one should take ...
Ting Yan +8 more
wiley +1 more source
The first tests of smartphone camera exposure effect on optical camera communication links [PDF]
, 2019 In this paper, we study the effect of smartphone camera exposure on the performance of optical camera communications (OCC) link. The exposure parameters of image sensor sensitivity (ISO), aperture and shutter speed are included.
Ghassemlooy, Zabih +2 more
core +2 more sources
VLC/OCC Hybrid Optical Wireless Systems for Versatile Indoor Applications
IEEE Access, 2019 In this paper, a hybrid scheme for optical wireless communications using LED lamps is proposed. This scheme allows both visible light communication (VLC) using photodetectors and optical camera communication (OCC) using image sensors of a camera to ...
Duy Thong Nguyen +3 more
doaj +1 more source