Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multichannel wavelength division multiplexing visible light communication system based on red green blue (RGB) light-emitting diode (LED)

A visible light communication and wavelength division multiplexing technology, which is applied in wavelength division multiplexing systems, short-range systems, free space transmission, etc. Effect of data transfer rate

Inactive Publication Date: 2013-03-13
NANJING UNIV OF POSTS & TELECOMM
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing visible light wireless communication systems, most of them use traditional white light LEDs to transmit one optical signal data. Due to the small bandwidth of white light LEDs, the transmission rate of visible light communication systems is greatly limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multichannel wavelength division multiplexing visible light communication system based on red green blue (RGB) light-emitting diode (LED)
  • Multichannel wavelength division multiplexing visible light communication system based on red green blue (RGB) light-emitting diode (LED)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0016] Such as figure 1 The RGB LED-based multi-channel wavelength division multiplexing visible light communication system shown includes a sending module and a receiving module. The sending module includes: a first USB interface, a first bridge module, and a sending end. The input end of the first bridge module is connected to the second A USB interface, the output end is connected to the sending end; the first USB interface is used to receive the serial bus signal, the first bridge module is used to convert the serial bus signal into a TTL level signal, and the sending end is used to drive the RGB LED device; the receiving end The module includes: a receiving end, a second bridge module, and a second USB interface. The input end of the second bridge module is connected to the receiving end, and the output end is connected to the second USB inter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multichannel wavelength division multiplexing visible light communication system based on a red green blue (RGB) light-emitting diode (LED). The multichannel wavelength division multiplexing visible light communication system comprises a first universal serial bus (USB) interface, a first bridging module, a sending end, a receiving end, a second bridging module and a second USB interface, wherein each bridging module comprises an interface circuit and a coding and decoding circuit, and the sending end comprises a voltage amplifier, a serial-to-parallel conversion circuit, a direct-current bias tee and an RGB LED device. The receiving end comprises a photoelectric detector group, an amplifying circuit, a parallel-to-serial conversion circuit and a decision device. The RGB LED device is utilized to achieve white-light illumination effect; meanwhile, simultaneous transmission of three-channel parallel optical signals is achieved by red green blue three-color chips through multichannel wavelength division multiplexing, and the data transmission rate is greatly improved.

Description

technical field [0001] The invention relates to a multi-channel wavelength division multiplexing visible light communication system based on RGB LEDs, and belongs to the technical field of wireless communication. Background technique [0002] Due to the advantages of fast, convenient, and hot-swappable support of the USB interface, it has become the preferred choice for connecting external devices to the computer. Through the USB interface, the wireless access of high-speed data between computers can be realized by using the wireless visible light communication technology. In the existing visible light wireless communication systems, most of them use traditional white light LEDs to transmit one line of optical signal data. Due to the small bandwidth of white light LEDs, the transmission rate of visible light communication systems is greatly limited. [0003] Both white LEDs and RGB LEDs have the same goal. They both hope to achieve the effect of white light, but one is dire...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04J14/02H04B10/116
Inventor 王永进丁礼伟刘芳何颖洁李丽冯姣
Owner NANJING UNIV OF POSTS & TELECOMM
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com