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Visible light and power line communication method and device supporting data transmission and positioning

A technology of power line communication and data transmission, which is applied in the field of communication, can solve problems such as the inability to obtain LED position information, and achieve the effects of low network construction costs, broad market prospects, and fast construction time

Active Publication Date: 2015-01-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing communication technology that integrates visible light and power lines can make the advantages of the two complement each other for large-capacity signal transmission, but only for data transmission, the position information of the LED cannot be obtained

Method used

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  • Visible light and power line communication method and device supporting data transmission and positioning
  • Visible light and power line communication method and device supporting data transmission and positioning
  • Visible light and power line communication method and device supporting data transmission and positioning

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Embodiment 1

[0077] This embodiment presents the application of a fusion of visible light and power line communication method supporting data transmission and positioning proposed by the present invention in a downlink communication system oriented to broadband digital terrestrial broadcasting. The schematic diagram is as follows figure 2 shown. The system requires four channels of downlink standard-definition digital TV broadcasting services within 8MHz bandwidth, using a single LED emitter, and the location information of the LED emitter is obtained through the location information in the sending signal.

[0078] The flow and transmission mode of the integrated visible light and power line communication method supporting data transmission and positioning provided by this embodiment are as follows:

[0079] Step A1: Perform encoding, modulation, framing, and analog front-end processing on the digital signal to be transmitted according to a predetermined transmission mode to obtain a tran...

Embodiment 2

[0093] This embodiment presents the application of a fusion of visible light and power line communication method supporting data transmission and positioning proposed by the present invention in a broadband wireless digital communication communication system oriented to selectable services that can be positioned. The system uses multiple LEDs to emit source, users can selectively receive required services, the location information of the LED emission source is pre-set on each LED, and the signal frame is added through the signal combining module.

[0094] The flow and transmission mode of the integrated visible light and power line communication method supporting data transmission and positioning provided by this embodiment are as follows:

[0095] Step B1: Perform encoding, modulation, framing, and analog front-end processing on the digital signal to be transmitted according to a predetermined transmission mode to obtain a transmission signal and couple it to the power line fo...

Embodiment 3

[0108] This embodiment presents the application of a fusion of visible light and power line communication method supporting data transmission and positioning proposed by the present invention in a communication system oriented to positionable broadband wireless digital communication. The system uses multiple LED emission sources, and the LED emission The location information of the source is acquired through the location information service in the sending signal.

[0109] The flow and transmission mode of the integrated visible light and power line communication method supporting data transmission and positioning provided by this embodiment are as follows:

[0110] Step C1: Perform encoding, modulation, framing, and analog front-end processing on the digital signal to be transmitted according to a predetermined transmission mode to obtain a transmission signal and couple it to the power line for transmission. This step requires one channel of standard definition digital televi...

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Abstract

The invention discloses a visible light and power line communication method and device supporting data transmission and positioning. The visible light and power line communication method comprises the steps that emission signals are coupled to a power line to be transmitted; the emission signals are extracted, service information is selected from the emission signals according to first signaling information, automatic gain control is conducted according to the source of positioning information, pieces of position information of an LED are combined in a frequency division multiplexing mode, and then a combination signal is obtained; the combination signal is fed into the LED and converted into a current signal, and the current signal is converted into a visible light signal by adjusting the luminous intensity of the LED; the visible light signal is received, corresponding service information is demodulated according to second signaling information, and the LED position information is obtained. By the adoption of the visible light and power line communication method and device supporting data transmission and positioning, electrical signals transmitted by a power line are directly emitted out through the LED in a visible light communication mode, and data transmission and positioning application are considered. The visible light and power line communication method and device supporting data transmission and positioning have the advantages that the network establishment cost is low and construction time is short. The visible light and power line communication method and device supporting data transmission and positioning can be applied to the fields such as smart power grids, digital families and pubic security monitoring.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a visible light and power line communication method and device supporting data transmission and positioning. Background technique [0002] With the rapid popularization of computers and smart devices, the category of mobile digital terminals has undergone revolutionary changes, and traditional access network technologies have been tested unprecedentedly. The "last 100 meters" access dilemma after FTTH and the lack of spectrum resources in the wireless access network all restrict the breakthrough of this bottleneck. In recent years, the visible light communication (Visible Light Communication, VLC for short) system has appeared in the field of communication as a new generation access method by virtue of its advantages of dual functions of communication and illumination. The carrier of visible light communication is generally a light emitting diode (Light Emitting Diode, LE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04B10/116
Inventor 杨昉马旭宋健阳辉潘长勇
Owner TSINGHUA UNIV
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