Topic
Visible light communication
About: Visible light communication is a research topic. Over the lifetime, 8672 publications have been published within this topic receiving 106943 citations.
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TL;DR: In this paper, a high-speed visible light communications link that uses a white-light light-emitting diode (LED) was described, and a data rate of 100 Mb/s was achieved using on-off keying non-return-to-zero modulation.
Abstract: This letter describes a high-speed visible light communications link that uses a white-light light-emitting diode (LED). Such devices have bandwidths of few megahertz, severely limiting the data rates of any communication system. Here, we demonstrate that by detecting only the blue component of the LED, and using a simple first-order analogue equalizer, a data rate of 100 Mb/s can be achieved using on-off keying nonreturn-to-zero modulation.
547 citations
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TL;DR: Light-Fidelity takes visible light communication (VLC) further by using light emitting diodes (LEDs) to realise fully networked wireless systems for the Internet-of-Things (IoT), 5G and beyond.
Abstract: Light-Fidelity (LiFi) takes visible light communication (VLC) further by using light emitting diodes (LEDs) to realise fully networked wireless systems. Synergies are harnessed as lights become LiFi attocells resulting in enhanced wireless capacity for the Internet-of-Things (IoT), 5G and beyond.
527 citations
TL;DR: In this article, the authors investigate analytically and by Monte Carlo simulations feasible data transmission rates in a moderate-size office room, where the use of commercially available LEDs and photodiodes.
Abstract: Emergence of white-light LEDs allows the combination of lighting and information broadcast functionality in one optical source. We investigate analytically and by Monte Carlo simulations feasible data transmission rates in a moderate-size office room, where we assume illumination conforming to standards and the use of commercially available LEDs and photodiodes. The performances of systems relying on baseband [i.e., pulse-amplitude modulation (PAM)] and discrete multitone (DMT) transmission show that data rates of more than 100 Mbit/s can be expected despite the rather low bandwidth of the system.
492 citations
TL;DR: This letter generalizes the Barry's model by including wavelength-dependent white LED characteristics and spectral reflectance of indoor reflectors and shows that the VLC provides a larger transmission bandwidth than infrared communications.
Abstract: In this letter, we present indoor multipath dispersion characteristics for visible light communications (VLC). Since the VLC uses a wide spectrum between 380 nm and 780 nm, the conventional narrowband model for infrared may not apply. We generalize the Barry's model by including wavelength-dependent white LED characteristics and spectral reflectance of indoor reflectors. We perform a computer simulation to compare the power delay profile of the VLC with that of infrared communications. From our studies, we show that the VLC provides a larger transmission bandwidth than infrared communications.
475 citations
TL;DR: An experimental demonstration of indoor wireless visible-light communication transmission at 1 Gb/s is reported, using a four-channel multiple-input multiple-output link that uses white LED sources.
Abstract: This letter reports an experimental demonstration of indoor wireless visible-light communication transmission at 1 Gb/s. The system consists of a four-channel multiple-input multiple-output link that uses white LED sources, each transmitting signals at 250 Mb/s using orthogonal frequency division multiplexing modulation. A nine-channel imaging diversity receiver is used to detect the signals, and an average bit error rate of 10-3 is achieved at the room illumination level of ~1000 lux at 1-m range.
451 citations