High Bandwidth Semipolar (20-21) μ-LED Serving as Photo-Receiver for Visible Light Communication

2021 ◽  
Author(s):  
Yun-Han Chang ◽  
Fang-Jyun Liou ◽  
Wahyu Hendra Gunawan ◽  
Chi-Wai Chow ◽  
Yang Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
High Bandwidth ◽  
Photo Receiver

Data transmission for high-bandwidth neural interfacing using visible light communication

2016 ◽  
Author(s):  
Gabor Varkonyi ◽  
Jonathan J. D. McKendry ◽  
Niall McAlinden ◽  
Martin D. Dawson ◽  
Keith Mathieson
Keyword(s):  
Visible Light ◽  
Data Transmission ◽  
Visible Light Communication ◽  
High Bandwidth ◽  
Neural Interfacing

scholarly journals Performance Optimization of Visible Light Communication

2021 ◽  
Vol 9 ◽  
Author(s):  
Agha Yasir Ali ◽  
◽  
Lubna Farhi ◽  
Usama Ahmed ◽  
Asad Subhan ◽  
...  
Keyword(s):  
Visible Light ◽  
Bit Error Rate ◽  
Performance Optimization ◽  
Visible Light Communication ◽  
Data Rate ◽  
Modulation Scheme ◽  
Performance Parameters ◽  
Trade Off ◽  
High Bandwidth ◽  
Ber Performance

This paper focuses to analyze the data rate, bit error rate (BER), flickering & bandwidth of visible light communication (VLC) system. The existing modulation scheme ON-OFF Keying (OOK) is modified and produces the trade-off between these parameters. The modified ON-OFF Keying (MOOK) is proposed in which the variation in the transmitted pulses is investigated. Therefore, the square and rectangular pulses are used to transmit zero and one bits respectively. The duty cycle of square pulse is increased to improve the flickering performance. Moreover, it utilized the bandwidth and deteriorates the BER performance. The differential MOOK (DMOOK) modulation scheme is also proposed in which the ON period of square pulse (zero bits) is removed. Therefore, the data rate of DMOOK is increased because the duration of zero bit pulse is decreased. Similarly, the high bandwidth is utilized and BER performance deteriorates. All performance parameters are evaluated on Arduino based hardware VLC system. We conclude that the BER performance deteriorates by improving flickering performance and data rate of the VLC system.

High-Bandwidth Green Semipolar (20–21) InGaN/GaN Micro Light-Emitting Diodes for Visible Light Communication

ACS Photonics ◽  
2020 ◽  
Vol 7 (8) ◽  
pp. 2228-2235 ◽  
Author(s):  
Sung-Wen Huang Chen ◽  
Yu-Ming Huang ◽  
Yun-Han Chang ◽  
Yue Lin ◽  
Fang-Jyun Liou ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Emitting Diodes ◽  
Visible Light Communication ◽  
Light Emitting ◽  
High Bandwidth

High-Bandwidth InGaN Self-Powered Detector Arrays toward MIMO Visible Light Communication Based on Micro-LED Arrays

ACS Photonics ◽  
2019 ◽  
Vol 6 (12) ◽  
pp. 3186-3195 ◽  
Author(s):  
Xiaoyan Liu ◽  
Runze Lin ◽  
Honglan Chen ◽  
Shuailong Zhang ◽  
Zeyuan Qian ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Detector Arrays ◽  
High Bandwidth ◽  
Self Powered ◽  
Led Arrays

scholarly journals A Dual-Use Visible Light Communication and Orientation Estimation System for Underwater Robots

2011 ◽  
Author(s):  
Ian C. Rust ◽  
H. Harry Asada
Keyword(s):  
Visible Light ◽  
Communication System ◽  
Visible Light Communication ◽  
Integrated Approach ◽  
Dual Use ◽  
Orientation Estimation ◽  
Underwater Robots ◽  
Orientation State ◽  
High Bandwidth ◽  
Estimation System

An integrated approach to underwater wireless communication and orientation estimation using visible light is presented and demonstrated using a simplified 1-DOF system. This system utilizes a long range, high bandwidth optical communication system as a reference with which to rectify error in the prediction of the orientation state. This is done through the use of a Discrete Kalman Filter. In this way, a dual-use system is developed. Using the same hardware, this system can simultaneously communicate using a modulated light source, and estimate, with accuracy, absolute orientation in space. This orientation knowledge is vital to maintaining a line-of-sight link for the communication system. In addition, orientation estimation is important for the various tasks that the underwater robot must perform.

High-Bandwidth White-Light System Combining a Micro-LED with Perovskite Quantum Dots for Visible Light Communication

2018 ◽  
Vol 10 (6) ◽  
pp. 5641-5648 ◽  
Author(s):  
Shiliang Mei ◽  
Xiaoyan Liu ◽  
Wanlu Zhang ◽  
Ran Liu ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
White Light ◽  
Visible Light Communication ◽  
Light System ◽  
Perovskite Quantum Dots ◽  
High Bandwidth

Frequency Response Comparison of Photo-Detectors for Visible Light Communication Systems

2018 ◽  
Vol 915 ◽  
pp. 220-223
Author(s):  
Mehmet Sönmez
Keyword(s):  
Solar Cell ◽  
Visible Light ◽  
Communication Systems ◽  
Visible Light Communication ◽  
Complex Signal ◽  
Pulse Position Modulation ◽  
Receiver Side ◽  
Photo Detectors ◽  
Data Signal ◽  
Photo Receiver

For Visible Light Communication (VLC) systems, photo receiver is very important for obtaining low noisy modulated signal at receiver side since the pure modulated signal is easy demodulated. Therefore, we give a comparison of performance of three type photo receivers in this paper. In first application, we use a photoresistor to detect the modulated signal. It is referred as CDS (cadmium-sulfide) resistor. Another detector is solar cell unit. The other receiver is selected photodiode detector. It is shown from experimental results that the most appropriate modulated signal is obtained at output of photodiode. The output of solar cell consists of very complex signal compared with output of photoresistor. Additionally, we use PPM (Pulse Position Modulation) technique for transmission of data signal.

scholarly journals Performance Analysis of Internet of Things using Visible Light Communication

2019 ◽  
Vol 9 (2S) ◽  
pp. 42-45
Keyword(s):  
Internet Of Things ◽  
Visible Light ◽  
Storage Capacity ◽  
Visible Light Communication ◽  
Surveillance Systems ◽  
Protocol Stack ◽  
Physical Medium ◽  
High Bandwidth ◽  
Iot Devices ◽  
The Times

Internet of Things enables seamless interaction between connected devices. The growing popularity of IoT will increase the number of sensors and devices to be connected with Internet enormously, resulting in generation of Trillions of GBs of data. Most of the IoT devices have very less storage capacity and hence data generated are to be transmitted to IoT node head which takes care of processing. Data generated from ECG devices, Video surveillance systems are very large requiring a physical medium with high bandwidth for the connection between device and IoT node head. Further the objects plugged into Internet are most of the times powered by batteries requiring low power communication. Visible Light Communication (VLC) is one such technology that provides wide bandwidth up to 10Gbps with energy efficiency and thus it can be a potential solution for the above problem. In this paper we propose NS3 based IoT implementation using existing IoT protocol stack with Visible Light Communication as the physical medium considering error model. We achieve a throughput of 416 Mbps which is a significant improvement over Wireless Fidelity based IoT implementation which has a throughput of 91.2 Mbps under the same condition.

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