CN106850061A - Visible light communication system and synchronous detection method thereof - Google Patents
Visible light communication system and synchronous detection method thereof Download PDFInfo
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- CN106850061A CN106850061A CN201710027295.5A CN201710027295A CN106850061A CN 106850061 A CN106850061 A CN 106850061A CN 201710027295 A CN201710027295 A CN 201710027295A CN 106850061 A CN106850061 A CN 106850061A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a visible light communication system and a synchronous detection method thereof. The invention provides a visible light communication system, comprising: a sending end and a receiving end; the sending end comprises a framing module, a sending module and an analog sending front end, wherein the framing module is coupled with the sending module, and the sending module is coupled with the analog sending front end; the framing module is used for framing the received transmission data to form data with fixed frame length, and each frame comprises a frame synchronization code, a data frame control word, effective data length, effective data, padding data and a frame check code field. In the visible light communication system, the transmitting end frames the received transmission data to form the fixed frame length data, so that the receiving end can correctly identify each frame of data to realize the synchronization function of transmitting and receiving data frames, thereby better maintaining the synchronization of the visible light communication and improving the efficiency of the visible light communication.
Description
Technical field
The present invention relates to visible light communication field, more particularly to a kind of visible light communication system and its synchronization detecting method.
Background technology
Visible light communication (VLC) is a kind of emerging wireless light communication technology grown up on White light LED technology.Its
Using the high-speed response characteristic of LED component, modulate the signal to and be transmitted in LED visible light, the communication is done using visible ray
It is information transfer carrier, with not receiving electromagnetic interference influence, environmental protection, transmission capacity is big, be capable of achieving illumination mutually tie with communicating
The features such as conjunction.Due to visible light communication using visible ray as information transfer carrier, the carrier is easily blocked, multipath effect
Influence, particularly in mobile environment, is blocked because of visible ray, multipath effect influences the reliability of visible light communication in short-term, adopts
Cause visible light communication transceiver channel frequently to be changed between synchronization, desynchronizing state with traditional communication synchronization mode, lengthen
The time that communication disruption is recovered, reduce the efficiency of visible light communication.
The content of the invention
It is a primary object of the present invention to provide a kind of visible light communication system, the synchronization of visible light communication can be more preferably kept
Property, to improve the efficiency of visible light communication.
To achieve the above object, the visible light communication system that the present invention is provided, including：Transmitting terminal and receiving terminal；
Transmitting terminal includes that framing module, sending module and simulation send front end, wherein, the framing module couples the hair
Module is sent, the sending module coupling simulation sends front end；
The framing module is used to that received transmission data to be carried out framing to form anchor-frame data long, each frame
Comprising frame swynchronization code, data frame control word, valid data length, valid data, filling data and frame check code field；
The sending module is used to receive and send anchor-frame data long；
The simulation sends front end to be used to be sent out the form of anchor-frame long number visible light signal according to this；
The receiving terminal includes that simulation receiving front-end, receiver module, synchronous detection module conciliate frame module；Wherein, it is described
Simulation receiving front-end couples the receiver module, and the receiver module couples the synchronous detection module, the synchronous detection mould
Block couples the solution frame module；
The simulation receiving front-end is used to receive the visible light signal, and the visible light signal is converted to described solid
Framing data long；
The receiver module is used to receive and send anchor-frame data long；
The synchronous detection module is used to carry out data receiver to anchor-frame data long by byte stream, and scanning frame is same
Step code；
The solution frame module is used to parse every frame data of anchor-frame data long, and exports the number after the parsing
According to.
Preferably, simulation sends front end includes the first digital analog converter and visible light source；Wherein, first number
Word analog converter couples the sending module, and the visible light source couples first digital analog converter；
First digital analog converter is used to for anchor-frame data long to be converted to the first analog signal；It is described can
See radiant for receiving first analog signal, and by first analog signal in the form of visible light signal to outgoing
Send.
Preferably, simulation receiving front-end includes visible Optical Receivers and the second digital analog converter；
The visible Optical Receivers couples second digital analog converter, the second digital analog converter coupling
The receiver module is connect,
The visible Optical Receivers is used to receive visible light signal, and the visible light signal is converted into the second simulation
Signal；
Second digital analog converter is used to for second analog signal to be converted to anchor-frame data long.
Preferably, the frame length of anchor-frame data long uses 128 byte frame lengths.
Preferably, the byte length of the frame swynchronization code is 1 byte, and the byte length of the data frame control word is 2
Individual byte, the byte length of the valid data length is 1 byte, and the byte length of the valid data is n byte, institute
The byte length for stating filling data is m byte, and the byte length of the frame check code field is 2 bytes, and m=128-n-
6。
Preferably, the visible light source is LED white lights, and the sending module is OFDM transmitters, the reception mould
Block is OFDM receiver.
The present invention also proposes a kind of visible light communication synchronization detecting method based on above-mentioned visible light communication system, described
Method includes：
The synchronous detection module of receiving terminal is used to carry out data receiver to anchor-frame data long by byte stream, and scanning frame is same
Step code；
When scanning is to the 1st frame swynchronization code, starts byte count pick up device and the byte of anchor-frame data long is entered
Row is counted；
When the frame length for reaching data frame is counted, next data frame is continued to scan on；
When scanning is to the 2nd frame swynchronization code, and when the frame length for reaching data frame is counted, continue to scan on next
Individual data frame；
When scanning is to the 3rd frame swynchronization code, judge that receiving terminal enters synchronous regime relative to transmitting terminal.
Preferably, it is described when scanning is to the 3rd frame swynchronization code, judge that receiving terminal enters synchronous regime relative to transmitting terminal
The step of after also include：
The synchronous detection module of receiving terminal continues to carry out data receiver to anchor-frame data long by byte stream, and scanning frame is same
Step code；
When frame swynchronization code is not detected continuous 4 times, judge that receiving terminal enters synchronous regime relative to transmitting terminal.
Preferably, it is described when scanning is to the 3rd frame swynchronization code, judge that receiving terminal enters synchronous regime relative to transmitting terminal
The step of after also include：
The solution frame module of the receiving terminal parses every frame data of the anchor-frame data long, and by the number after parsing
According to output.
In the visible light communication system of invention, it is solid to be formed that the transmission data that will be received by transmitting terminal carry out framing
Framing data long, every frame data can be correctly identified in order to receiving terminal, to realize the synchronizing function of transceiving data frame, so that more
The synchronism of visible light communication is kept well, to improve the efficiency of visible light communication.
Brief description of the drawings
Fig. 1 is the high-level schematic functional block diagram of the embodiment of visible light communication system of the present invention；
Fig. 2 is the high-level schematic functional block diagram of the simulation transmission embodiment of front end one in Fig. 1；
Fig. 3 is the high-level schematic functional block diagram of the simulation embodiment of receiving front-end one in Fig. 1；
Fig. 4 is by visible light communication system of the present invention is using the structural representation of frame；
Fig. 5 is that the flow of the embodiment of visible light communication synchronization detecting method one of visible light communication system of the present invention is illustrated
Figure.
Drawing reference numeral explanation：
1 transmitting terminal
11 framing modules
12 sending modules
13 simulations send front end
131 first digital analog converters
132 visible light sources
2 receiving terminals
21 simulation receiving front-ends
211 visible Optical Receivers
212 second digital analog converters
22 receiver modules
23 synchronous detection modules
24 solution frame modules
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of visible light communication system.
Fig. 1 is the high-level schematic functional block diagram of the embodiment of visible light communication system of the present invention.Fig. 2 is simulation transmission in Fig. 1
The high-level schematic functional block diagram of the embodiment of front end 13 1.Fig. 3 is that the functional module of the simulation embodiment of receiving front-end 21 1 in Fig. 1 is illustrated
Figure.Fig. 4 is by visible light communication system of the present invention is using the structural representation of frame.Incorporated by reference to referring to figs. 1 to Fig. 4, in this implementation
In example, the visible light communication system includes transmitting terminal 1 and receiving terminal 2.Transmitting terminal 1 includes framing module 11, the and of sending module 12
Simulation sends front end 13, wherein, the coupling sending module 12 of framing module 11, the coupling simulation of sending module 12 sends front end 13.
Wherein, framing module 11 is used to that received transmission data to be carried out framing to form anchor-frame data long.Tool
Body refer to Fig. 4, and in the present embodiment, the frame length of anchor-frame data long uses 128 byte frame lengths.Each frame includes frame synchronization
Code, data frame control word, valid data length, valid data, filling data and frame check code field.The byte long of frame swynchronization code
It is 1 byte to spend, and the byte length of data frame control word is 2 bytes, and the byte length of valid data length is 1 byte,
The byte length of valid data is n byte, and the byte length for filling data is m byte, the byte long of frame check code field
It is 2 bytes to spend, and m=128-n-6.
Sending module 12 is used to receive and send anchor-frame data long.
Simulation sends front end 13 to be used to be sent out the form of anchor-frame long number visible light signal according to this.
Fig. 2 is refer to, in the present embodiment, simulation sends front end 13 includes the first digital analog converter 131 and visible
Radiant 132；Wherein, the coupling of the first digital analog converter 131 sending module 12, it is seen that the numeral of the coupling of radiant 132 first
Analog converter 131.Wherein, it is seen that radiant 132 can be LED white lights, and sending module 12 can be OFDM transmitters.
First digital analog converter 131 is used to for anchor-frame data long to be converted to the first analog signal；Visible light source
132 are used to receive the first analog signal, and the first analog signal is sent out in the form of visible light signal.
Receiving terminal 2 includes that simulation receiving front-end 21, receiver module 22, synchronous detection module 23 conciliate frame module 24；Wherein,
The simulation coupling receiver module 22 of receiving front-end 21, the coupling synchronous detection module 23 of receiver module 22, synchronous detection module 23 is coupled
Solution frame module 24.Wherein, receiver module 22 can be OFDM receiver.
Fig. 3 is refer to, in the present embodiment, simulation receiving front-end 21 is counted including visible Optical Receivers 22211 and second
Word analog converter 212.It can be seen that Optical Receivers 22211 couples the second digital analog converter 212, the second digital-to-analogue conversion
Device 212 couples receiver module 22.
Wherein, it is seen that Optical Receivers 22211 is used to receive visible light signal, and will be seen that optical signal is converted to the second mould
Intend signal.
Second digital analog converter 212 is used to for the second analog signal to be converted to anchor-frame data long.
Simulation receiving front-end 21 is used to receive visible light signal, and will be seen that optical signal is converted to anchor-frame data long.
Receiver module 22 is used to receive and send anchor-frame data long.
Synchronous detection module 23 is used to carry out data receiver to anchor-frame data long by byte stream, and scans frame swynchronization code.
Solution frame module 24 is used to parse every frame data of anchor-frame data long, and exports the data after parsing.
In the present embodiment, after the transmission data that framing module 11 is received, framing is carried out with shape to the transmission data
Framing a length of 128 byte frame length anchor-frame data long, each frame comprising frame swynchronization code, data frame control word, valid data length,
Valid data, filling data and frame check code field.Wherein data frame control word can be defined according to concrete application, significant figure
Notebook data frame valid data byte number is represented according to length, filling data are filled (fixed to fill out in the case where valid data are unable to full frame
Fill byte 0x55), valid data length is n byte in Fig. 4, fills data length m=128-n-6, and frame check is realized to whole
The verification of frame data, after transmission data complete framing computing, then is sent to sending module 12, and sending module 12 is again by the fixation frame length
Data are transferred to simulation and send front end 13, and the first digital analog converter 131 pairs transmission data that simulation sends front end 13 are entered
Data after conversion are transferred to visible light source 132, then by row D/A data conversions, it is seen that radiant 132 is by after conversion
Data are sent out in the form of visible light signal.In receiving terminal 2, it is seen that after Optical Receivers 22 receives visible light signal, warp
The second digital analog converter 212 pairs visible light signal carries out A/D conversions, then presses byte stream by synchronous detection module 23
Data receiver is carried out to the anchor-frame data long after the conversion, and scans frame swynchronization code.Then, solution frame module 24 parses this and fixes
Every frame data of frame length data, and export the data after parsing.
In the present embodiment, the transmission data that will be received by transmitting terminal 1 carry out framing to form anchor-frame data long,
Every frame data can be correctly identified in order to receiving terminal 2, to realize the synchronizing function of transceiving data frame, so as to more preferably keep visible
The synchronism of optic communication, to improve the efficiency of visible light communication.
The invention allows for a kind of visible light communication synchronization detecting method based on above-mentioned visible light communication system.Fig. 5
It is the schematic flow sheet of the embodiment of visible light communication synchronization detecting method one of visible light communication system of the present invention.Refer to Fig. 5,
The flow is comprised the following steps：
Start；
Step S10：The synchronous detection module 23 of receiving terminal 2 connects for carrying out data to anchor-frame data long by byte stream
Receive, and scan frame swynchronization code.
Step S20：Judge whether scanning to the 1st frame swynchronization code.If so, performing step S30；If it is not, performing step
S90.(wherein, S90：Judge that receiving terminal 2 enters desynchronizing state relative to transmitting terminal 1.)
Step S30：Start byte count pick up device to count the byte of anchor-frame data long.
Step S40：When the frame length for reaching data frame is counted, next data frame is continued to scan on；
Step S50：Judge whether scanning to the 2nd frame swynchronization code, if so, performing step S60；If it is not, performing step
S90。
Step S60：When the frame length for reaching data frame is counted, next data frame is continued to scan on.Step S70：
Judge whether scanning to the 3rd frame swynchronization code, if so, performing step S80；If it is not, performing step S90.
Step S80：Judge that receiving terminal 2 enters synchronous regime relative to transmitting terminal 1.
After judging that receiving terminal 2 enters synchronous regime relative to transmitting terminal 1, the parsing of solution frame module 24 of receiving terminal 2 is fixed
Every frame data of frame length data, and by the data output after parsing.
In above-mentioned flow, by judging whether to scan to after the 1st frame swynchronization code, then, then judge whether scanning
To the 2nd frame swynchronization code, then, then judge whether scanning to the 3rd frame swynchronization code, until frame swynchronization code is arrived in continuous 3 scanning
Afterwards, and then, judge that receiving terminal 2 enters synchronous regime relative to transmitting terminal 1, detection method of the invention can very easily judge
Go out the synchronism of the visible light communication system visible light communication.
Continue referring to Fig. 5, in the present embodiment, judge receiving terminal 2 relative to transmitting terminal 1 enter synchronous regime it
Afterwards, step S100 can again be performed.
Step S100：The synchronous detection module 23 of receiving terminal 2 continues to carry out data to anchor-frame data long by byte stream to connect
Receive, and scan frame swynchronization code.
Step S110：Judge whether not detect frame swynchronization code continuous 4 times.If so, performing step S80；If it is not, performing
Step S90.
In the present embodiment, it is raising to use 4 times not detect synchronous code and determine that receiver is into desynchronizing state
The antijamming capability and the fast restoration capabilities because of short interruptions of Transmission system because on transmission line because moment blocks in
The disconnected interruption in short-term for causing or error code (4 frame swynchronization codes are lost) do not influence Transmission system to work, and transmission channel can be allowed to enter
Hold mode, keeps current synchronous regime, and continue the data by former synchronous regime parsing, reduction passage.It is synchronous when receiving
Retention time is long, and synchronous code is still not detected by after such as 4 frames, then receiver enters desynchronizing state, can be examined such as in 4 frame data
The synchronous code of survey, can be continually maintained in synchronous regime, avoiding problems because the channel short time is disturbed and to data transfer caused by
Influence.The synchronous method obtains preferable laser propagation effect in actual applications.The characteristics of present invention is also dependent on actual environment,
The i.e. visible optical communication path average interference duration, number is continuously lost by adjusting the synchronous code of receiving terminal 2, adjust receiving terminal
2 time to lose lock, makes the retention time more than the average interference duration of passage, to eliminate interference to communication system
Influence.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of visible light communication system, it is characterised in that including：Transmitting terminal and receiving terminal；
Transmitting terminal includes that framing module, sending module and simulation send front end, wherein, the framing module couples the transmission mould
Block, the sending module coupling simulation sends front end；
The framing module is used to carry out framing to form anchor-frame data long to received transmission data, and each frame is included
Frame swynchronization code, data frame control word, valid data length, valid data, filling data and frame check code field；
The sending module is used to receive and send anchor-frame data long；
The simulation sends front end to be used to be sent out the form of anchor-frame long number visible light signal according to this；
The receiving terminal includes that simulation receiving front-end, receiver module, synchronous detection module conciliate frame module；Wherein, the simulation
Receiving front-end couples the receiver module, and the receiver module couples the synchronous detection module, the synchronous detection module coupling
Connect the solution frame module；
The simulation receiving front-end is used to receive the visible light signal, and the visible light signal is converted into the anchor-frame
Data long；
The receiver module is used to receive and send anchor-frame data long；
The synchronous detection module is used to carry out data receiver to anchor-frame data long by byte stream, and scans frame synchronization
Code；
The solution frame module is used to parse every frame data of anchor-frame data long, and exports the data after the parsing.
2. visible light communication system as claimed in claim 1, it is characterised in that
Simulation sends front end includes the first digital analog converter and visible light source；Wherein, first digital-to-analogue conversion
Device couples the sending module, and the visible light source couples first digital analog converter；
First digital analog converter is used to for anchor-frame data long to be converted to the first analog signal；The visible ray
Light source is used to receive first analog signal, and first analog signal is sent out in the form of visible light signal.
3. visible light communication system as claimed in claim 1, it is characterised in that
Simulation receiving front-end includes visible Optical Receivers and the second digital analog converter；
The visible Optical Receivers couples second digital analog converter, and second digital analog converter couples institute
State receiver module,
The visible Optical Receivers is used to receive visible light signal, and the visible light signal is converted into the second simulation letter
Number；
Second digital analog converter is used to for second analog signal to be converted to anchor-frame data long.
4. visible light communication system as claimed in claim 1, it is characterised in that the frame length of the anchor-frame data long is used
128 byte frame lengths.
5. visible light communication system as claimed in claim 4, it is characterised in that the byte length of the frame swynchronization code is 1
Byte, the byte length of the data frame control word is 2 bytes, and the byte length of the valid data length is 1 byte,
The byte length of the valid data is n byte, and the byte length of the filling data is m byte, the frame check code
The byte length of field is 2 bytes, and m=128-n-6.
6. visible light communication system as claimed in claim 1, it is characterised in that the visible light source is LED white lights, institute
Sending module is stated for OFDM transmitters, the receiver module is OFDM receiver.
7. a kind of visible light communication based on visible light communication system as claimed in any one of claims 1 to 6 is synchronously detected
Method, it is characterised in that methods described includes：
The synchronous detection module of receiving terminal is used to carry out data receiver to anchor-frame data long by byte stream, and scans frame synchronization
Code；
When scanning is to the 1st frame swynchronization code, starts byte count pick up device and the byte of anchor-frame data long is counted
Number；
When the frame length for reaching data frame is counted, next data frame is continued to scan on；
When scanning is to the 2nd frame swynchronization code, and when the frame length for reaching data frame is counted, continue to scan on next number
According to frame；
When scanning is to the 3rd frame swynchronization code, judge that receiving terminal enters synchronous regime relative to transmitting terminal.
8. a kind of visible light communication synchronization detecting method as claimed in claim 7, it is characterised in that described when scanning to the 3rd
During individual frame swynchronization code, judge also to include after the step of receiving terminal enters synchronous regime relative to transmitting terminal：
The synchronous detection module of receiving terminal continues to carry out data receiver to anchor-frame data long by byte stream, and scans frame synchronization
Code；
When frame swynchronization code is not detected continuous 4 times, judge that receiving terminal enters synchronous regime relative to transmitting terminal.
9. a kind of visible light communication synchronization detecting method as claimed in claim 7, it is characterised in that described when scanning to the 3rd
During individual frame swynchronization code, judge also to include after the step of receiving terminal enters synchronous regime relative to transmitting terminal：
The solution frame module of the receiving terminal parses every frame data of the anchor-frame data long, and the data after parsing are defeated
Go out.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027295.5A CN106850061B (en) | 2017-01-13 | 2017-01-13 | Visible light communication system and synchronous detection method thereof |
| PCT/CN2017/071371 WO2018129756A1 (en) | 2017-01-13 | 2017-01-17 | Visible light communication system and synchronization detection method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027295.5A CN106850061B (en) | 2017-01-13 | 2017-01-13 | Visible light communication system and synchronous detection method thereof |
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| CN106850061B CN106850061B (en) | 2019-03-26 |
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| WO (1) | WO2018129756A1 (en) |
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|---|---|---|---|---|
| CN109120342A (en) * | 2018-08-13 | 2019-01-01 | 南开大学 | One of point-to-point visible light communication data frame structure is realized based on FPGA |
| CN109147650A (en) * | 2017-06-28 | 2019-01-04 | 西安诺瓦电子科技有限公司 | Show synchronisation control means and device and display screen control system |
| CN113347024A (en) * | 2021-05-19 | 2021-09-03 | 郑州信大捷安信息技术股份有限公司 | Data isolation exchange method and device based on visible light communication |
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| CN104079351A (en) * | 2014-04-22 | 2014-10-01 | 中国人民解放军信息工程大学 | Method and device for transmitting visible light communication data |
| US20140341589A1 (en) * | 2013-05-16 | 2014-11-20 | Disney Enterprises, Inc. | Reliable visibile light communication with dark light synchronization |
| CN104243032A (en) * | 2014-08-26 | 2014-12-24 | 南京邮电大学 | Multi-input multi-output visible light communication system synchronization method |
| CN106100798A (en) * | 2016-08-05 | 2016-11-09 | 邬东强 | Data transmission device and the method and system of transmission data |
| CN106230503A (en) * | 2016-07-29 | 2016-12-14 | 邬东强 | Data transmission device and the method and system of transmission data |
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| US20140341589A1 (en) * | 2013-05-16 | 2014-11-20 | Disney Enterprises, Inc. | Reliable visibile light communication with dark light synchronization |
| CN104079351A (en) * | 2014-04-22 | 2014-10-01 | 中国人民解放军信息工程大学 | Method and device for transmitting visible light communication data |
| CN104243032A (en) * | 2014-08-26 | 2014-12-24 | 南京邮电大学 | Multi-input multi-output visible light communication system synchronization method |
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| CN109147650A (en) * | 2017-06-28 | 2019-01-04 | 西安诺瓦电子科技有限公司 | Show synchronisation control means and device and display screen control system |
| CN109120342A (en) * | 2018-08-13 | 2019-01-01 | 南开大学 | One of point-to-point visible light communication data frame structure is realized based on FPGA |
| CN113347024A (en) * | 2021-05-19 | 2021-09-03 | 郑州信大捷安信息技术股份有限公司 | Data isolation exchange method and device based on visible light communication |
| CN113347024B (en) * | 2021-05-19 | 2022-03-15 | 郑州信大捷安信息技术股份有限公司 | Data isolation exchange method and device based on visible light communication |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018129756A1 (en) | 2018-07-19 |
| CN106850061B (en) | 2019-03-26 |
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