RGB Sensor Frequency Response for a Visible Light Communication System

Martínez-Ciro, Roger Alexander; Giraldo, Francisco Eugenio López; Betancur-Pérez, Andrés F.

doi:10.1109/tla.2016.7816998

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…The last restriction should guarantee the bias current range {I r I g I b } that can be applied to each RGB LED [20], such that I min ≤ I r I g I b ≤ I max . These currents are determined by Equation (13). If the aforementioned restrictions are not satisfied, a value of zero is assigned to each colour point x p = 0 y p = 0.…”

Section: Algorithm To Design M-csk-ltf Constellationsmentioning

confidence: 99%

“…The LDs can provide Gigabit-class wireless connectivity in the order of 100 Gb/s, using modulation formats like quadrature amplitude modulation -orthogonal frequency division multiplexed (QAM-OFDM) and wavelength division multiplexing (WDM) [9][10][11]. On the receiver, photodiodes detect the fast variations of the emitted light signals [12,13]. The idea behind using visible light as a carrier for digital signals is mainly encouraged for the following reasons: (a) The infrastructure of LED luminaries can be reused as information transmitters.…”

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Design and Implementation of a Multi-Colour Visible Light Communication System Based on a Light-to-Frequency Receiver

et al. 2019

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Colour-shift keying (CSK) is a visible light communication (VLC) modulation scheme used in the existing IEEE 802.15.7 standard. In CSK, information is transmitted by changing the light intensities of the RGB LEDs. In this work, a low-complexity VLC system is proposed using CSK modulation and a novel receiver based on a light-to-frequency (LTF) converter. At the receiver, CSK symbols are interpreted and decoded in terms of frequencies, which are processed by a counter module of a generic microcontroller, thus avoiding the use of analog-to-digital converters (ADCs), which results in a low-cost VLC system. The main contributions of this work are summarized in the following key points: (1) A low-complexity receiver for CSK modulation is introduced; (2) A particle swarm optimization (PSO) algorithm for CSK constellation design is suggested considering the restrictions of the LTF based receiver; (3) Experimental and theoretical validation is perfomed for the proposed multi-colour VLC system. The results show that this system can provide a transmission speed of 100 kbps using a 4-CSK-LTF constellation for a symbol error rate (SER) of 10 − 4 and a signal to noise ratio (SNR) around 35 dB. These results suggest that the analysed system could find applications on those scenarios where low transmission speeds and ease of deployment are the goals.

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Section: Algorithm To Design M-csk-ltf Constellationsmentioning

confidence: 99%

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confidence: 99%

Design and Implementation of a Multi-Colour Visible Light Communication System Based on a Light-to-Frequency Receiver

et al. 2019

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“…Existen aún retos por superar en los sistemas VLC como lo es su limitado ancho de banda en comparación con los sistemas inalámbricos que emplean ondas de radio (Martínez Ciro et al, 2016), pues la respuesta en frecuencia de los LED no es muy alta debido a la capacitancia parasita y a los materiales presentes en estos (Navarro Restrepo et al, 2020). Otra limitante es la rápida atenuación de la luz con la distancia y enfrentar otras fuentes de radiación lumínica como la luz ambiente, y entre estas, el sol (Karunatilaka et al, 2015).…”

Section: Introductionunclassified

Sistema VLC con modulación externa: hacia las comunicaciones por luz solar

Gallego¹,

Betancur-Pérez²,

Castillo³

2022

reveia

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En este trabajo implementamos un sistema de comunicación por luz visible con modulación externa a través de una válvula de luz de $1.5 USD, un sensor de luz analógico de escala logarítmica, un lente de Fresnel de $5 USD, un LED de 12 V operando de forma continua, y 2 Raspberry Pi 3. Este trabajo es una iniciativa para explotar de manera directa la luz solar como fuente de radiación para complementar los sistemas VLC con un bajo costo de implementación. La válvula de luz permitió transmitir datos a una velocidad de 100 bps que sugiere un escenario de aplicación como las redes de sensores inalámbricos y en general para la Internet de las Cosas (IoT). Dado que no hay mucho espacio en el espectro radioeléctrico para dar lugar a nuevos servicios y tecnologías de comunicación inalámbrica, los sistemas VLC prometen ser un gran complemento a las redes de acceso inalámbricas convencionales, para balancear la carga del tráfico presente cuando exista una conexión masiva de dispositivos en el paradigma de IoT

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“…Visible light communication (VLC) technology uses data signals to modulate the light intensity of light emitting diodes (LEDs) [6] and RGB laser diodes (LDs) [7]. In the receiver side, photodiodes detect the fast variations of the emitted light signals [8,9].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Visible Light Communication based toys

Najihah¹,

Habaebi²,

Rahman³

2019

Bulletin EEI

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This paper presents the design and implementation steps of a smart visible light communication based toy system equipped with laser sensors that can send and receive the data message based on the conversion of data from ASCII to binary code. The toy system intends to offer two-ways communication that will be a new medium for educational purposes for kids in their developmental stages in which both players can send and receive the data to and from each other toys equipped with sound indicator module to alert the player. Lastly, functionality and system testing were conducted to verify the functionalities of the system. A thorough implementation methodology details are presented in the paper.

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RGB Sensor Frequency Response for a Visible Light Communication System

Cited by 10 publications

References 18 publications

Design and Implementation of a Multi-Colour Visible Light Communication System Based on a Light-to-Frequency Receiver

Design and Implementation of a Multi-Colour Visible Light Communication System Based on a Light-to-Frequency Receiver

Sistema VLC con modulación externa: hacia las comunicaciones por luz solar

Design and Implementation of Visible Light Communication based toys

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