Comparison of different modulation techniques for high bandwidth visible light communication

2015 ◽  
Author(s):  
Gayatri S. Sontakle ◽  
D.M. Bhalerao
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Modulation Techniques ◽  
High Bandwidth

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

An Introduction to LiFi and Review of Prototypes Designed on FPGA and Other Hardware

2020 ◽  
pp. 69-99
Author(s):  
Faisal Khan Khaskheli ◽  
Fahim Aziz Umrani ◽  
Attiya Baqai
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
High Data Rate ◽  
Low Power Consumption ◽  
Modern World ◽  
High Data ◽  
Starting Point ◽  
Modulation Techniques ◽  
Market Status ◽  
Led Lights

The current wireless networks are highly deficient when it comes to catering to the needs of the modern world with applications such as IoT and online interactive gaming. LiFi (visible light communication) has attracted interest as a solution to this problem due to its high data rate, wider spectrum, low power consumption, higher security, lower cost, and immunity to EMI. The idea behind LiFi is to use LED lights already available for space lighting for the purpose of transmitting. The chapter begins with a brief introduction to LiFI and then takes the reader through the history and market status of the technology all the way through to popular modulation techniques and finally ends with summarizing the transceiver prototypes designed previously with special emphasis on FPGA-based prototypes. The chapter provides a starting point for young budding researchers interested in LiFi and its implementation.

Performance Analysis of FSK-PPM Technique in Visible-Light Communication Systems

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Mehmet Sönmez
Keyword(s):  
Visible Light ◽  
Communication Systems ◽  
Average Power ◽  
Visible Light Communication ◽  
Transmission Power ◽  
Rate Performance ◽  
Power Requirement ◽  
Modulation Techniques ◽  
Shift Keying ◽  
Average Transmission

AbstractThis paper presents a combination of the FSK (frequency shift keying) and the PPM (pulse position modulation) techniques for visible-light communication systems. We propose novel modulator architecture, which is referred as combined FSK-PPM (CFPPM), to observe the average power requirement of FSK technique. The proposed combined scheme is compared with the traditional FSK method in terms of average transmission power and BER (bit error rate) performance. The average transmission power of FSK modulation technique is independent on M that is expressed as modulation order. The results show that the requirement of average transmission power of proposed FSK can be gradually decreased dependent on M.

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.

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