Ethernet over commercial lighting by a Visible Light Communication

Sturniolo, Alessandro; Cossu, G.; Messa, A.; Ciaramella, E.

doi:10.23919/glc.2018.8319117

Cited by 6 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mostly, VLC offers the ability to combine with lighting infrastructure. 6 One branch of VLC technology, Optical Camera Communication (OCC), uses visible light to transfer data from a visible source to the camera sensor of a mobile device. This technology is particularly suitable for indoor positioning, Optical Camera Positioning (OCP).…”

Section: Introductionmentioning

confidence: 99%

“…The appeal of OCP stems from the potential to exploit pre-existing LED lighting systems with minimal modification, together with Complementary Metal-Oxide Semiconductor (CMOS) cameras, widespread in consumer electronics. All the above elements combined lead to significant reductions in deployment expenses 6 for OCP. Furthermore, conventional light sources are progressively being substituted by LED lights that can be adjusted, enabling the transmission of distinct IDs, thereby offering a means to differentiate between multiple beacons cost-effectively.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical camera communications for indoor positioning: high accuracy, low cost, and low power consumption

Cossu,

Gilli,

Sturniolo

et al. 2024

Free-Space Laser Communications XXXVI

View full text Add to dashboard Cite

Optical Camera Communication (OCC) can be employed for indoor positioning and navigation and it is suitable for environments where GPS signals are unavailable or unreliable. We developed a novel solution based on a network of Light Emitting Diode (LED) lamps placed on the ceiling, where each lamp emits a unique identification (ID) code made of a few simple sine waves. The code is detected by the camera sensor exploiting the rolling shutter and ad-hoc signal processing which does not need synchronization. The system only requires a single image to recognize different IDs captured by the camera, reducing the power consumption of the device. The position can operate in coarse and fine modes, with meter and centimeter accuracy, respectively. In both cases, a single LED lamp is enough for localization.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical camera communications for indoor positioning: high accuracy, low cost, and low power consumption

Cossu,

Gilli,

Sturniolo

et al. 2024

Free-Space Laser Communications XXXVI

View full text Add to dashboard Cite

show abstract

“…To the best of the authors’ knowledge, there exist limited reports on reusing the existing commercial LED luminaries for simultaneous VLC communication and illumination in the literature. In [ 21 ], a commercial LED table lamp was upgraded to a VLC system providing a 10Base-T Ethernet connection via an optical wireless transmission of 12.5 Mb/s Manchester coded on-off-keying (OOK) signals. The achievable system capacity is not fully exploited due to the transmission speed limitation of the Ethernet connection.…”

Section: Introductionmentioning

confidence: 99%

“…The achievable system capacity is not fully exploited due to the transmission speed limitation of the Ethernet connection. Additionally, challenges and issues in implementing such a practical system based on existing luminaries are not covered in [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

A 40 Mb/s VLC System Reusing an Existing Large LED Panel in an Indoor Office Environment

Ghassemlooy

Zvánovec

et al. 2021

Sensors

View full text Add to dashboard Cite

With advances in solid-state lighting, visible light communication (VLC) has emerged as a promising technology to enhance existing light-emitting diode (LED)-based lighting infrastructure by adding data communication capabilities to the illumination functionality. The last decade has witnessed the evolution of the VLC concept through global standardisation and product launches. Deploying VLC systems typically requires replacing existing light sources with new luminaires that are equipped with data communication functionality. To save the investment, it is clearly desirable to make the most of the existing illumination systems. This paper investigates the feasibility of adding data communication functionality to the existing lighting infrastructure. We do this by designing an experimental system in an indoor environment based on an off-the-shelf LED panel typically used in office environments, with the dimensions of 60 × 60 cm2. With minor modifications, the VLC function is implemented, and all of the modules of the LED panel are fully reused. A data rate of 40 Mb/s is supported at a distance of up to 2 m while using the multi-band carrierless amplitude and phase (CAP) modulation. Two main limiting factors for achieving higher data rates are observed. The first factor is the limited bandwidth of the LED string inside the panel. The second is the flicker due to the residual ripple of the bias current that is generated by the panel’s driver. Flicker is introduced by the low-cost driver, which provides bias currents that fluctuate in the low frequency range (less than several kilohertz). This significantly reduces the transmitter’s modulation depth. Concurrently, the driver can also introduce an effect that is similar to baseline wander at the receiver if the flicker is not completely filtered out. We also proposed a solution based on digital signal processing (DSP) to mitigate the flicker issue at the receiver side and its effectiveness has been confirmed.

show abstract

“…Manchester coding is one of the most suggested OOK line codification in low data VLC systems, as well as in optical camera communication (OCC), due to reasons related to simplicity, flicker, average signal intensity, among others [6], [36]. It was implemented in the Ethernet 10Base-T emulation described in [31], in which commercial off-the-shelf LEDs were used in the in-line VLC system. The relatively high data rate (12.5 Mbps) was achieved in a VLC link of only 1 m. In the VLC/OCC hybrid system proposed in [32], the authors used Manchester coding in the VLC system to avoid flickering.…”

Section: Introductionmentioning

confidence: 99%

A Manchester-OOK Visible Light Communication System for Patient Monitoring in Intensive Care Units

et al. 2021

View full text Add to dashboard Cite

Visible light communication (VLC) is an interesting solution in intensive care (IC) medical environments to, among others, prevent the spread of emerging diseases. This work presents the design of a low-cost and stable VLC transceiver system in addition to practical characterizations and experimental performance evaluations for application in IC environments. The application focuses on the transmission of Manchester-based on-off keying signals, in a proof-of-concept apparatus that makes use of the eye opening penalty (EOP) metric to illustrate a comprehensive picture of the potentials of the evaluated VLC system. Parameters such as light-emitting diode (LED) bias current, modulation frequency, line-of-sight link distance, and signal pattern were analyzed here. Experimental results show an outstanding behavior considering an LED bias current of 400 mA, a signal frequency of 1 MHz and a VLC transmission link length of 2.5 m. To validate our system, vital parameters as heart rate, oxygen saturation, pulse rate, respiration rate, temperature and non-intrusive blood pressure signals were transmitted for VLC links of 1.5, 5 and 15 m, which were received by a multi-parameter monitor, with EOP values of 0.89, 0.96 and 2.67 dB, respectively.

show abstract

Ethernet over commercial lighting by a Visible Light Communication

Cited by 6 publications

References 7 publications

Optical camera communications for indoor positioning: high accuracy, low cost, and low power consumption

Optical camera communications for indoor positioning: high accuracy, low cost, and low power consumption

A 40 Mb/s VLC System Reusing an Existing Large LED Panel in an Indoor Office Environment

A Manchester-OOK Visible Light Communication System for Patient Monitoring in Intensive Care Units

Contact Info

Product

Resources

About