Corpus ID: 17926397

Digital Signal Processing for Light Emitting Diode Based Visible Light Communication

  title={Digital Signal Processing for Light Emitting Diode Based Visible Light Communication},
  author={Chi Wai Chow and Chien-Hung Yeh and Yen-Liang Liu and Yen-Liang Liu},
The realization of enhanced efficiency light emitting diodes (LED) and the trend to lower costs of LED lighting systems will facilitate their wider deployment in many applications. LED lighting system with the value-added functionality of optical wireless communication enables the deployment of a communication system with very little extra cost. Visible light communication (VLC) provides the merits of secure information exchange, harmlessness to human body, and excellent applicability in some… Expand
Optical wireless communications using visible LED
The improvements of power efficiency and cost reduction enable light emitting diode (LED) to be deployed in a variety of applications. LED can be switched on and off at a relatively high speed thanExpand
Adaptive filtering for white-light LED visible light communication
Using the proposed electrical frontend circuit and the proposed AVF, a significant data rate enhancement to 700.68  Mbit/s is achieved after 1-m free-space transmission using a single white-light phosphor-based LED. Expand
Mitigation of Optical Background Noise in Light-Emitting Diode (LED) Optical Wireless Communication Systems
One challenge faced by the in-home light-emitting diode (LED) optical wireless communication is the optical noises. Here, we first experimentally characterize the effect of optical background noiseExpand
Design of visible light communication system for maintaining uniform data rate
An orthogonal frequency-division multiplexing access (OFDMA) based system is proposed to solve the latency issue of visible light communication (VLC), and because it does not use time-division Multiplexing Access (TDMA), the latencyissue can be reduced. Expand
Passive optical receiver for visible light communication (VLC)
The solar cell is low cost and can convert the VLC optical signal into electrical signal without external power supply and using pre-distortion to significantly enhance the response of the solar cell Rx is proposed and demonstrated. Expand
Differential signaling spread-spectrum modulation of the LED visible light wireless communications using a mobile-phone camera
Abstract Visible light communication (VLC) using spread spectrum modulation (SSM) and differential signaling (DS), detected by a mobile-phone camera is proposed and demonstrated for the first time toExpand
Enhancement of Signal Performance in LED Visible Light Communications Using Mobile Phone Camera
Visible light communication (VLC) is attractive as a supplementary method for future fifth-generation (5G) wireless communication owing to the shortage of radio-frequency bandwidth in conventionalExpand
Optical Wireless Communication System Using LED and Image Sensor
  • P. Patil, C. Borse
  • Computer Science
  • 2015 International Conference on Computing Communication Control and Automation
  • 2015
An optical wireless communication system equipped with an optical communication image sensor (OCI), which is newly developed using CMOS technology, is implemented and a new technique called 1-bit flag image technique for quick LED detection is introduced. Expand
High Speed Imaging 3 × 3 MIMO Phosphor White-Light LED Based Visible Light Communication System
A 3 × 3 imaging multiple-input multiple-output (MIMO) VLC system is demonstrated and the original 1 MHz bandwidth commercially available phosphor white light LED can achieve 1 Gbps data rate over 1-m free-space transmission distance. Expand
Review on Reduction of Optical Background Noise in Light- Emitting Diode (LED) Optical Wireless Communication Systems using Hadamard Error Correcting Code.
Optical background noises produced by conventional florescent light sources, tungsten filament sources or AC power light-emitting diode (LED) are major source of interference in LED optical wirelessExpand


High-Speed Visible Light Communications Using Multiple-Resonant Equalization
White light-emitting diodes (LEDs) are becoming widespread in commercial lighting applications, and there are predictions that they will be in common use in domestic applications in the future. ThereExpand
Investigation of 4-ASK modulation with digital filtering to increase 20 times of direct modulation speed of white-light LED visible light communication system
The quaternary-amplitude-shift-keying (4-ASK) modulation with digital filtering to enhance the direct modulation speed of white-light light-emitting-diode (LED) in visible light communication (VLC) system is experimentally investigated. Expand
100-Mb/s NRZ Visible Light Communications Using a Postequalized White LED
This letter describes a high-speed visible light communications link that uses a white-light light-emitting diode (LED). Such devices have bandwidths of few megahertz, severely limiting the dataExpand
“Lights-off” visible light communications
This paper investigates VLC with limits on transmit power, which are defined to be low enough so that users will accept that the lights are in their “off” state, and argues that these limits vary based on levels of natural illumination already present in the environment. Expand
513 Mbit/s Visible Light Communications Link Based on DMT-Modulation of a White LED
We report a visible-light wireless point-to-point communication link operating at 513 Mbit/s gross transmission rate (net Mbit/s). The bit-error ratio of the uncoded data was smaller than for anExpand
230 Mbit/s via a wireless visible-light link based on OOK modulation of phosphorescent white LEDs
  • J. Vucic, C. Kottke, +4 authors J. Walewski
  • Physics
  • 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference
  • 2010
We report a first indoor wireless visible-light link operating up to 230 Mbit/s by use of on-off-keying and with bit-error-ratios below 2·10-3. The results were achieved for illuminance levelsExpand
High data rate multiple input multiple output (MIMO) optical wireless communications using white led lighting
In this paper, a non-imaging optical MIMO system does not perform properly at all receiver positions due to symmetry, but an imaging based system can operate under all foreseeable circumstances, and simulations show such systems can operate at several hundred Mbit/s, and up to G Bit/s in many circumstances. Expand
Equalization and pre-distorted schemes for increasing data rate in in-door visible light communication system
  • Y. Liu, Y. C. Chang, C. Chow, C. Yeh
  • Physics
  • 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference
  • 2011
We propose and demonstrate using signal pre-distortion and equalization schemes for increasing the data rate of the white-light LED communication system. Bit-error-rate of <10−10 at 10-Mb/sExpand
125 Mbit/s over 5 m wireless distance by use of OOK-Modulated phosphorescent white LEDs
We report a wireless visible-light link operating for the first time at 125 Mbit/s over 5 m distance indoor by use of on-off-keying (OOK), resulting in bit-error-ratios below 2·10<sup>−3</sup>.
803 Mbit/s visible light WDM link based on DMT modulation of a single RGB LED luminary
We report the first visible light link based on WDM and DMT modulation of a single RGB-type white LED, operating at an aggregate rate of 803 Mbit/s within the FEC 2·10<sup>−3</sup> limit.