Multi-user visible light communication method and system

A technology of visible light communication and multi-user communication, applied in the multi-user visible light communication system and multi-user visible light communication field, can solve the problems of interference between users, affecting the reliability and security of the system, and small system capacity, so as to improve the security, The effect of reducing interference between users and increasing system capacity

Active Publication Date: 2016-05-04
SYSU CMU SHUNDE INT JOINT RES INST +1
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, VLC systems are generally used in single-user scenarios, and the system capacity is small; for mult

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
  • Multi-user visible light communication method and system
  • Multi-user visible light communication method and system
  • Multi-user visible light communication method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The embodiments provided by the present invention include embodiments of multi-user visible light communication methods, and also include corresponding multi-user visible light communication system embodiments. Each will be described in detail below.

[0034] figure 1 It is a schematic flowchart of a multi-user visible light communication method according to an embodiment of the present invention; figure 1 As shown, the multi-user visible light communication method in this embodiment includes the following steps S1 to S4, each step is described in detail as follows:

[0035] S1, generatin...

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 relates to a multi-user visible light communication method and a multi-user visible light communication system. The method comprises the steps of generating a plurality of chaotic sequences for identifying different users in a multi-user visible light communication system; performing CSK modulation on bit information input by each user of a transmitting end, thus obtaining a three-dimensional transmission vector, including RGB information, corresponding to each user; modulating the transmission vectors for the second time by using the chaotic sequences corresponding to the users, thus obtaining transmission matrixes corresponding to the users, and transmitting the transmission matrixes to a receiving end via an optical wireless channel; receiving the matrixes transmitted by the optical wireless channel by the receiving end, demodulating the matrixes by using the chaotic sequences corresponding to the users, thus obtaining the three-dimensional transmission vectors, including RGB information, corresponding to the users; and demodulating each three-dimensional transmission vector to obtain the bit information transmitted by the corresponding user. According to the multi-user visible light communication method, the interference among users can be reduced, the reliability and security of the system can be improved, and the system capacity can be increased.

Description

technical field [0001] The present invention relates to the technical field of optical communication, in particular to a multi-user visible light communication method and a multi-user visible light communication system. Background technique [0002] Visible Light Communication (VisibleLightCommunication, VLC) technology uses light emitting diodes (LightEmittingDiode, LED) instead of traditional wireless antennas to transmit data, can realize lighting and communication at the same time, and can use the visible spectrum without authorization, which can solve the spectrum resources of traditional wireless communication systems shortage problem. [0003] Color shift keying (Colour Shift Keying, CSK) is a modulation technology suitable for visible light communication systems. In CSK technology, the transmission rate is increased by modulating the input bits into the CIE1931 color space, and then transmitting different information through different colors. Specifically, in the C...

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): H04B10/116H04L27/00
CPCH04B10/116H04L27/001
Inventor 陈裕发张琳江明
Owner SYSU CMU SHUNDE INT JOINT RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap