scholarly journals Sistem Komunikasi Audio dengan Teknologi Visible Light Communication (VLC) Menggunakan Laser Led

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Atik Charisma ◽  
Rizky Nur Akbar Setiawan ◽  
Een Taryana ◽  
Hajiar Yuliana ◽  
Alifa Rike Indriani
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Sound Quality ◽  
Solar Panel ◽  
Wireless Technology ◽  
Information Signal ◽  
The People ◽  
Dark Conditions ◽  
Audio Communication ◽  
The Times

Kegiatan masyarakat di era sekarang yang serba digital menggunakan teknologi tanpa kabel (wireless). Teknologi tanpa kabel menjadi andalan komunikasi, namun seiring perkembangann zaman, ada sebuah teknologi tanpa kabel dengan memanfaatkan cahaya tampak.  Teknologi ini dikenal dengan istilah visible light communication (VLC). Sistem VLC terdiri dari bagian transmitter dan receiver. Transmitter berupa komponen-komponen elektronika yang terintegrasi dengan cahaya tampak sebagai media transmisi. Pada penelitian ini membuat bagian transmitter dan receiver untuk komunikasi audio. Cahaya tampak sebagai media transmisi menggunakan laser led karena cahaya dari laser led ini lebih fokus dan pancaran cahayanya lebih jauh dibandingkan dengan yang lain. Sedangkan di sisi receiver menggunakan solar panel sebagai penerima sinyal informasi yang dikirimkan. Penelitian ini berhasil membuat sebuah sistem komunikasi audio berbasis visible light communication. Variasi jarak antara transmitter dan receiver mempengaruhi kualitas suara yang diterima. Pada jarak 500 cm kualitas suara yaitu 99,2 dB pada kondisi gelap dan 99,1 dB kondisi terang. Perubahan sudut pancar transmitter terhadap receiver juga mempengaruhi hasil kualitas suara. Kualitas suara terbaik pada sudut 900 di kondisi terang dengan jarak 50 cm sebesar 97,9 dB sedangkan di kondisi gelap dengan jarak 50 cm  pada sudut 1000 sebesar 98,1 dB.   Abstract The people activities in today's digital era use wireless technology. Wireless technology has become the mainstay of communication, but along with the times, there is a wireless technology that uses visible light. This technology is known as visible light communication (VLC). The VLC system consist of transmitter and receiver. Transmitters are electronic components that are integrated with visible light as a transmission medium. In this study, the transmitter and receiver are made for audio communication. Visible light as a transmission medium uses an LED laser because the light from this LED laser is more focused and the light beam is farther away than the others. While on the receiver side using a solar panel as a receiver of the information signal that is sent. This research succeeded in making an audio communication system based on visible light communication. Variations in the distance between the transmitter and receiver affect the quality of the received sound. At a distance of 500 cm in dark conditions, the sound quality is 99.2 dB in light conditions and 99.1 dB. Changes in the beam angle of tranmitter to receiver also affect the sound quality. The best sound quality at an angle of 900 in bright conditions with a distance of 50 cm is 97.9 dB while in dark conditions with a distance of 50 cm at an angle of 1000 is 98.1 dB.

scholarly journals Bidirectional Underwater Visible Light Communication

2018 ◽  
Vol 8 (6) ◽  
pp. 5203
Author(s):  
Arsyad Ramadhan Darlis ◽  
Andre Widura ◽  
Muhamad Rifan Andrian
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Experimental Result ◽  
Color Filter ◽  
Optical Channel ◽  
Water Tank ◽  
Underwater Environment ◽  
Information Signal ◽  
Blue Wavelength ◽  
The One

In this paper, a novel bidirectional underwater visible light communication (BiUVLC) is proposed. The VLC transmitter transmits an information signal using the one of RGB LED through the water tank that represents an underwater environment and then is received by VLC receiver via a color filter. The color LEDs and color filters are utilized in bidirectional systems. The single link is created by a LED on the transmitter and the color filter on the receiver with the same color which represents a single wavelength. The performance of the proposed BiUVLC system was evaluated via implementations. The experimental result shows that the transmitted signal undergoes attenuation over the underwater optical channel and the pair of the blue wavelength in link 1 and the green wavelength in link 2 have the best performance than the other wavelength pair. In the crosstalk measurement, the red wavelength color is the worst in the underwater environment.

scholarly journals A Signal Amplification-based Transceiver for Visible Light Communication

2020 ◽  
Vol 26 (11) ◽  
pp. 123-132
Author(s):  
Augustus Ehiremen Ibhaze ◽  
Frederick O Edeko ◽  
Patience E Orukpe
Keyword(s):  
Visible Light ◽  
Data Transmission ◽  
High Speed ◽  
Data Transfer ◽  
Visible Light Communication ◽  
Wireless Technology ◽  
Capacity Enhancement ◽  
Large Bandwidth ◽  
High Speed Data ◽  
Speed Data Transmission

Visible light communication (VLC) is an upcoming wireless technology for next-generation communication for high-speed data transmission. It has the potential for capacity enhancement due to its characteristic large bandwidth. Concerning signal processing and suitable transceiver design for the VLC application, an amplification-based optical transceiver is proposed in this article. The transmitter consists of a driver and laser diode as the light source, while the receiver contains a photodiode and signal amplifying circuit. The design model is proposed for its simplicity in replacing the trans-impedance and transconductance circuits of the conventional modules by a simple amplification circuit and interface converter. The system was tested at communication distances of 1m and 3.5m using a terminal emulation program for data transfer between two computing devices.

scholarly journals An Efficient Intelligent System for Data Communication Using LIFI Technology

2014 ◽  
Vol 13 (10) ◽  
pp. 5044-5050
Author(s):  
Dr. Naveen Rathee ◽  
Shreyaa Nagpal ◽  
Abhinav Malik ◽  
Charvi Khandelwal
Keyword(s):  
Visible Light ◽  
Intelligent System ◽  
Data Communication ◽  
Visible Light Communication ◽  
Radio Spectrum ◽  
Wireless Technology ◽  
Simple Experiment ◽  
Led Light ◽  
Human Eye ◽  
The World

The congestion of radio spectrum has led to the development of new wireless technology, Light Fidelity also referred as LIFI, which has a much broader spectrum. LIFI is a technology based on visible light communication (VLC) that makes use of LEDs as a source for data communication. The intensity of LED varies faster than a human eye can follow and helps to transmit the data. Our research deals with the usage of this technology for the future good of the world. A simple experiment to show the transmission of alphanumeric data using visible light communication is carried out. A Led light is the only source to transmit the data from the transmitter end to the receiver’s. A keyboard is being employed as an input for the alphanumeric data and an LCD to display the inputted characters.

scholarly journals Self-reverse-biased solar panel optical receiver for simultaneous visible light communication and energy harvesting

2016 ◽  
Vol 24 (22) ◽  
pp. A1300 ◽  
Author(s):  
Won-Ho Shin ◽  
Se-Hoon Yang ◽  
Do-Hoon Kwon ◽  
Sang-Kook Han
Keyword(s):  
Energy Harvesting ◽  
Visible Light ◽  
Visible Light Communication ◽  
Solar Panel ◽  
Optical Receiver

scholarly journals Li-Fi technology: A Era of New Data Transmission

2020 ◽  
Vol 22 (12) ◽  
Author(s):  
Patil P.S ◽  
◽  
Rohit Sarve ◽  
Sajal Jaipurkar ◽  
Ingle R.M ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Visible Light ◽  
Data Transmission ◽  
High Speed ◽  
Visible Light Communication ◽  
Radio Waves ◽  
Wireless Technology ◽  
Transfer Data ◽  
Underground Communication ◽  
Radio Frequencies

The main focus of this paper is to clarify the concept and working of Li-Fi technology. In present era, wireless communication plays an important role in day to day life. Wifi is the most used wireless technology which transmits data through radio frequencies. However, during multiple accesses WiFi is facing many challenges related to speed, security and efficiency. Also, WiFI emits radio waves which are harmful in hospitals for patients and cannot be used in underground communication and airplanes. These limitations of WiFi are overcome by Li-Fi technology. The term Li-Fi stands for Light Fidelity which uses visible light communication (VLC) to transfer data at high speed. In this paper, a detailed study on Li-Fi technology, its working and future scope is discussed.

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