CN112260754A - Passive autonomous visible light communication reverse signal link and communication method thereof - Google Patents
Passive autonomous visible light communication reverse signal link and communication method thereof Download PDFInfo
- Publication number
- CN112260754A CN112260754A CN202010979832.8A CN202010979832A CN112260754A CN 112260754 A CN112260754 A CN 112260754A CN 202010979832 A CN202010979832 A CN 202010979832A CN 112260754 A CN112260754 A CN 112260754A
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- analog
- modulation
- digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5561—Digital phase modulation
-
- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5563—Digital frequency modulation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The embodiment of the application provides a passive autonomous visible light communication reverse signal link and a communication method thereof, wherein the method comprises the following steps: the device comprises a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driver module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module and a signal demodulation module; the method and the device can solve the problem of uplink signal data in a single light source mode, improve the overall practicability of the system, and have great application prospects.
Description
Technical Field
The application relates to the field of optical communication, in particular to a passive autonomous visible light communication reverse signal link and a communication method thereof.
Background
The visible light communication is a novel communication mode, the reverse signal link is an important component of the LED visible light full-duplex communication system, a single signal source is adopted, an uplink link and a downlink link modulation scheme with strong correlation are adopted, and the overall performance of the system is greatly improved. The visible light communication technology is to transmit information by using high-speed bright and dark flashing signals which are sent by fluorescent lamps or light emitting diodes and can not be seen by naked eyes, the wire device of a high-speed internet is connected to a lighting device and can be used by plugging in a power plug, a system made by the technology can cover the range reached by indoor lighting, and a computer does not need wire connection, so the visible light communication technology has wide development prospect. The system also has the characteristic of high safety, the information cannot be leaked to the outside by shielding light with a curtain, the communication speed cannot be influenced by using a plurality of computers, and the system can be freely used by departments such as hospitals sensitive to electromagnetic signals and the like because radio wave communication is not used.
The inventor finds that currently, most of the conventional visible light communication full-duplex communication systems use multiple signal sources, that is, uplink and downlink adopt independent signal sources, and most of the conventional visible light communication systems use a mode of combining visible light with other wireless communication modes, so that relatively independent transmitting and receiving equipment needs to be designed for the system, the overall structure of the system is complex, and the safety and reliability characteristics of the visible light communication system are greatly reduced. The passive autonomous visible light communication system uses a single signal source, a full-duplex visible light communication system can be realized without loading an additional signal source, the overall structure is simpler, the error rate of an uplink signal system is reduced to a certain extent due to the use of a signal modulation scheme with stronger correlation, and the passive autonomous visible light communication system has great development and application space.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a passive autonomous visible light communication reverse signal link and a communication method thereof, which can solve uplink signal data in a single light source mode, improve the overall practicability of a system and have great application prospects.
In order to solve at least one of the above problems, the present application provides the following technical solutions:
in a first aspect, the present application provides a passive autonomous visible light communication reverse signal link, comprising: the device comprises a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driver module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module and a signal demodulation module;
the signal modulation module is used for coding and modulating a data signal to be transmitted, and is connected with the digital-to-analog conversion module;
the digital-to-analog conversion module is used for performing digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal, and the first digital-to-analog conversion module is connected with the signal amplification module;
the signal amplification module is used for performing power amplification processing on the analog electric signal and is connected with the reverse driving module;
the reverse driving module is used for carrying out secondary modulation on a downlink signal in the analog electric signal subjected to the power amplification processing and transmitting an uplink signal subjected to the secondary modulation to an atmospheric channel in a light wave form;
the photoelectric receiving module detects light wave signals from an atmospheric channel and converts the received light wave signals into analog electric signals, and the photoelectric receiving module is connected with the signal processing module;
the signal processing module is used for extracting uplink signals from the analog electric signals received and converted by the photoelectric receiving module and filtering stray signals except the uplink signals, and the signal processing module is connected with the analog-to-digital conversion module;
the analog-to-digital conversion module is used for performing analog-to-digital conversion on the uplink signal, and is connected with the signal demodulation module;
the signal demodulation module is used for demodulating the uplink signal after the analog-to-digital conversion to obtain uplink signal data.
Further, the signal modulation module performs phase modulation on a downlink signal to be transmitted, and the signal modulation module performs frequency modulation on an uplink signal to be transmitted.
Further, the signal processing module is further configured to amplify and filter the uplink signal.
Further, the reverse driver module is configured to perform a reverse modulation process according to a product of the uplink signal and the downlink signal.
In a second aspect, the present application provides a communication method for a passive autonomous visible light communication reverse signal link, including:
the signal modulation module is used for carrying out coding modulation on a data signal to be transmitted;
the first digital-to-analog conversion module performs digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal;
the signal amplification module is used for carrying out power amplification processing on the analog electric signal;
the reverse driver module performs secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmits the downlink signal after the secondary modulation to the photoelectric receiving module;
the signal processing module extracts an uplink signal from the downlink signal received by the photoelectric receiving module;
the second analog-to-digital conversion module performs digital-to-analog conversion on the uplink signal;
and the signal demodulation module demodulates the uplink signal subjected to the analog-to-digital conversion to obtain uplink signal data.
In a third aspect, the present application provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the communication method of the passive autonomous visible light communication reverse signal link when executing the program.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of communication of a passive autonomous visible light communication reverse signal link as described.
According to the technical scheme, the passive autonomous visible light communication reverse signal link and the communication method thereof are provided, and the link formed by combining the signal modulation module, the digital-to-analog conversion module, the signal amplification module, the reverse driving module, the photoelectric receiving module, the signal processing module, the analog-to-digital conversion module and the signal demodulation module is arranged, so that uplink signal data under a single light source mode can be solved, the overall practicability of the system is improved, and the communication method has a great application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a communication method of a passive autonomous visible light communication reverse signal link in an embodiment of the present application;
fig. 2 is a block diagram of a passive autonomous visible light communication reverse signal link in an embodiment of the present application;
FIG. 3 is a schematic flow chart of the operation of the reverse driver module in the embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Considering that most of the existing visible light communication full-duplex communication systems currently use multiple signal sources, that is, uplink and downlink adopt independent signal sources, and most of the existing visible light communication systems use a mode combining visible light and other wireless communication modes, therefore, relatively independent transmitting and receiving equipment needs to be designed for the system, so that the overall structure of the system is relatively complex, and the safety and reliability characteristics of the visible light communication system are greatly reduced. The application provides a passive autonomous visible light communication reverse signal link and a communication method thereof, and the link formed by combining a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driver module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module and a signal demodulation module is arranged, so that uplink signal data under a single light source mode can be solved, the overall practicability of the system is improved, and the passive autonomous visible light communication reverse signal link has a great application prospect.
The present invention can solve uplink signal data in a single light source mode, improves the overall practicability of the system, and has a great application prospect, and the present application provides an embodiment of a passive autonomous visible light communication reverse signal link for realizing all or part of the contents of the communication method of the passive autonomous visible light communication reverse signal link, and referring to fig. 2, the passive autonomous visible light communication reverse signal link specifically includes the following contents:
the device comprises a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driving module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module and a signal demodulation module;
the signal modulation module is used for coding and modulating a data signal to be transmitted, and is connected with the data conversion module;
the digital-to-analog conversion module is used for performing digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal, and is connected with the signal amplification module;
optionally, when an analog signal needs to be output, data is first sent to a data interface obtained by the digital-to-analog conversion module and latched, and when a signal is to be read, the digital-to-analog conversion module reads the data on the pin of the data interface and performs digital-to-analog conversion, outputs the converted data in a current form, and then converts the current signal into a voltage signal.
The signal amplification module is used for performing power amplification processing on the analog electric signal, and is connected with the reverse driver module;
the reverse driving module is used for performing secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmitting the downlink signal after the secondary modulation to the photoelectric receiving module;
the signal processing module is used for extracting an uplink signal from the downlink signal received by the photoelectric receiving module, and is connected with the second digital-to-analog conversion module;
optionally, the signal processing module is configured to perform filtering, signal amplification and other processing on the electrical signal converted by the photoelectric receiving module.
The analog-to-digital conversion module is used for performing digital-to-analog conversion on the uplink signal, and is connected with the signal demodulation module;
optionally, the analog-to-digital conversion module is configured to perform data sampling and other processing on the processed analog signal, and convert the analog signal into a digital signal.
The signal demodulation module is used for demodulating the uplink signal after the analog-to-digital conversion to obtain uplink signal data.
Optionally, the signal demodulation module is configured to perform operations such as decoding and demodulation processing on the signal.
As can be seen from the above description, the passive autonomous visible light communication reverse signal link provided in the embodiment of the present application can solve uplink signal data in a single light source mode by setting a link formed by combining the signal modulation module, the digital-to-analog conversion module, the signal amplification module, the reverse driver module, the photoelectric receiving module, the signal processing module, the analog-to-digital conversion module, and the signal demodulation module, so that the overall practicability of the system is improved, and the passive autonomous visible light communication reverse signal link has a great application prospect.
In an embodiment of the passive autonomous visible light communication reverse signal link, the signal modulation module performs phase modulation on a downlink signal to be transmitted, and the signal modulation module performs frequency modulation on an uplink signal to be transmitted.
In an embodiment of the passive autonomous visible light communication reverse signal link of the present application, the signal processing module is further configured to amplify and filter the uplink signal.
In an embodiment of the passive autonomous visible light communication reverse signal link of the present application, referring to fig. 3, an input signal is first sampled into a digital signal by the ADC, stored in the RAM, and the frame synchronization header detection module is used to detect the start position of a data frame and determine an appropriate position for window interception. The length of the window is set to be the length of one code element, so that information loss caused by the fact that the window is set too small can be avoided, and the problem of crosstalk caused by the fact that the window is set too long can be solved. Intercepting the data by using a window, calculating a correlation value with a local modulation signal template to obtain four different cross-correlation values, sending the cross-correlation values to a threshold comparison module for judgment, and recovering the original uplink data.
Optionally, in order to ensure that the uplink and downlink signal links interfere with or even cover the downlink and uplink signal links, the uplink and downlink signal links use different modulation methods, and the carrier frequency of the downlink is different from the carrier frequency of the uplink signal link, so that the active end separates the uplink signal link signal from the received signal, that is, if the downlink is modulated in the PSK manner, the uplink uses the FSK modulation method, that is, the uplink uses the FSK modulation method
Downlink signals:
A(t)＝Pta(1+Amcos(ω0t+θk))
wherein A ismcos(ω0t+θk) And k is 1,2,3 … M, which is an M-ary PSK modulated signal expression.
Let the uplink modulation signal be e (t). The downlink optical signal is used as a carrier, and the uplink signal is modulated by a reverse modulator. According to the reverse modulation principle, the uplink signal is multiplied by the downlink received signal + to obtain a signal after secondary modulation. The signal s (t) after the second modulation is obtained as:
when the uplink adopts the modulation format of MFSK, its modulation signal e (t) can be expressed as:
in the formula anE {00,01,10,11}, Δ ω represents the frequency difference between different carriers, θ is the initial phase, g (T) is the representation of a single pulse of the baseband signal, and T is the pulse width.
In order to solve uplink signal data in a single light source mode, improve the overall practicability of the system, and have a great application prospect, the present application provides an embodiment of a communication method for a passive autonomous visible light communication reverse signal link, and referring to fig. 1, the communication method for the passive autonomous visible light communication reverse signal link specifically includes the following contents:
step S101: the signal modulation module is used for carrying out coding modulation on a data signal to be transmitted;
step S102: the digital-to-analog conversion module performs digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal;
step S103: the signal amplification module is used for carrying out power amplification processing on the analog electric signal;
step S104: the reverse driver module performs secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmits the downlink signal after the secondary modulation to the photoelectric receiving module;
step S105: the signal processing module extracts an uplink signal from the downlink signal received by the photoelectric receiving module;
step S106: the analog-to-digital conversion module performs digital-to-analog conversion on the uplink signal;
step S107: and the signal demodulation module demodulates the uplink signal subjected to the analog-to-digital conversion to obtain uplink signal data.
As can be seen from the above description, the communication method of the passive autonomous visible light communication reverse signal link provided in the embodiment of the present application can solve uplink signal data in a single light source mode by setting the link formed by combining the signal modulation module, the digital-to-analog conversion module, the signal amplification module, the reverse driver module, the photoelectric receiving module, the signal processing module, the analog-to-digital conversion module, and the signal demodulation module, so that the overall practicability of the system is improved, and the communication method has a great application prospect.
In order to solve uplink signal data in a single light source mode, improve the overall practicability of the system, and have a great application prospect, the present application provides an embodiment of an electronic device for implementing all or part of the contents in the communication method of the passive autonomous visible light communication reverse signal link, where the electronic device specifically includes the following contents:
a processor (processor), a memory (memory), a communication Interface (Communications Interface), and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the communication interface is used for realizing information transmission between the passive autonomous visible light communication reverse signal link and relevant equipment such as a core service system, a user terminal and a relevant database; the logic controller may be a desktop computer, a tablet computer, a mobile terminal, and the like, but the embodiment is not limited thereto. In this embodiment, the logic controller may be implemented with reference to the embodiment of the communication method of the passive autonomous visible light communication reverse signal link and the embodiment of the passive autonomous visible light communication reverse signal link in the embodiment, and the contents thereof are incorporated herein, and repeated details are not repeated.
It is understood that the user terminal may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a Personal Digital Assistant (PDA), an in-vehicle device, a smart wearable device, and the like. Wherein, intelligence wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..
In practical applications, part of the communication method of the passive autonomous visible light communication reverse signal link may be performed at the electronic device side as described above, or all operations may be performed in the client device. The selection may be specifically performed according to the processing capability of the client device, the limitation of the user usage scenario, and the like. This is not a limitation of the present application. The client device may further include a processor if all operations are performed in the client device.
The client device may have a communication module (i.e., a communication unit), and may be communicatively connected to a remote server to implement data transmission with the server. The server may include a server on the task scheduling center side, and in other implementation scenarios, the server may also include a server on an intermediate platform, for example, a server on a third-party server platform that is communicatively linked to the task scheduling center server. The server may include a single computer device, or may include a server cluster formed by a plurality of servers, or a server structure of a distributed apparatus.
Fig. 4 is a schematic block diagram of a system configuration of an electronic device 9600 according to an embodiment of the present application. As shown in fig. 4, the electronic device 9600 can include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. Notably, this fig. 4 is exemplary; other types of structures may also be used in addition to or in place of the structure to implement telecommunications or other functions.
In an embodiment, the communication method functions of the passive autonomous visible light communication reverse signal link may be integrated into the central processor 9100. The central processor 9100 may be configured to control as follows:
step S101: the signal modulation module is used for carrying out coding modulation on a data signal to be transmitted;
step S102: the first digital-to-analog conversion module performs digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal;
step S103: the signal amplification module is used for carrying out power amplification processing on the analog electric signal;
step S104: the reverse driver module performs secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmits the downlink signal after the secondary modulation to the photoelectric receiving module;
step S105: the signal processing module extracts an uplink signal from the downlink signal received by the photoelectric receiving module;
step S106: the second analog-to-digital conversion module performs digital-to-analog conversion on the uplink signal;
step S107: and the signal demodulation module demodulates the uplink signal subjected to the analog-to-digital conversion to obtain uplink signal data.
As can be seen from the above description, in the electronic device provided in the embodiment of the present application, by setting the link formed by combining the signal modulation module, the first digital-to-analog conversion module, the signal amplification module, the reverse driver module, the photoelectric receiving module, the signal processing module, the second digital-to-analog conversion module, and the signal demodulation module, uplink signal data in a single light source mode can be solved, so that the overall practicability of the system is improved, and the electronic device has a great application prospect.
In another embodiment, the passive autonomous visible light communication reverse signal link may be configured separately from the central processor 9100, for example, the passive autonomous visible light communication reverse signal link may be configured as a chip connected to the central processor 9100, and the communication method function of the passive autonomous visible light communication reverse signal link is realized by the control of the central processor.
As shown in fig. 4, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is noted that the electronic device 9600 also does not necessarily include all of the components shown in fig. 4; further, the electronic device 9600 may further include components not shown in fig. 4, which may be referred to in the art.
As shown in fig. 4, a central processor 9100, sometimes referred to as a controller or operational control, can include a microprocessor or other processor device and/or logic device, which central processor 9100 receives input and controls the operation of the various components of the electronic device 9600.
The memory 9140 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 9100 can execute the program stored in the memory 9140 to realize information storage or processing, or the like.
The input unit 9120 provides input to the central processor 9100. The input unit 9120 is, for example, a key or a touch input device. Power supply 9170 is used to provide power to electronic device 9600. The display 9160 is used for displaying display objects such as images and characters. The display may be, for example, an LCD display, but is not limited thereto.
The memory 9140 can be a solid state memory, e.g., Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes called an EPROM or the like. The memory 9140 could also be some other type of device. Memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application/function storage portion 9142, the application/function storage portion 9142 being used for storing application programs and function programs or for executing a flow of operations of the electronic device 9600 by the central processor 9100.
The memory 9140 can also include a data store 9143, the data store 9143 being used to store data, such as contacts, digital data, pictures, sounds, and/or any other data used by an electronic device. The driver storage portion 9144 of the memory 9140 may include various drivers for the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging applications, contact book applications, etc.).
The communication module 9110 is a transmitter/receiver 9110 that transmits and receives signals via an antenna 9111. The communication module (transmitter/receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 9110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby implementing ordinary telecommunications functions. The audio processor 9130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 9130 is also coupled to the central processor 9100, thereby enabling recording locally through the microphone 9132 and enabling locally stored sounds to be played through the speaker 9131.
Embodiments of the present application further provide a computer-readable storage medium capable of implementing all steps in the communication method of the passive autonomous visible light communication reverse signal link whose execution subject is the server or the client in the above embodiments, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements all steps of the communication method of the passive autonomous visible light communication reverse signal link whose execution subject is the server or the client in the above embodiments, for example, when the processor executes the computer program, the processor implements the following steps:
step S101: the signal modulation module is used for carrying out coding modulation on a data signal to be transmitted;
step S102: the first digital-to-analog conversion module performs digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal;
step S103: the signal amplification module is used for carrying out power amplification processing on the analog electric signal;
step S104: the reverse driver module performs secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmits the downlink signal after the secondary modulation to the photoelectric receiving module;
step S105: the signal processing module extracts an uplink signal from the downlink signal received by the photoelectric receiving module;
step S106: the second analog-to-digital conversion module performs digital-to-analog conversion on the uplink signal;
step S107: and the signal demodulation module demodulates the uplink signal subjected to the analog-to-digital conversion to obtain uplink signal data.
As can be seen from the above description, the computer-readable storage medium provided in this embodiment of the present application can solve uplink signal data in a single light source mode by providing a link formed by combining a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driver module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module, and a signal demodulation module, so that the overall practicability of the system is improved, and the computer-readable storage medium has a great application prospect.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A passive autonomous visible light communication reverse signal link, comprising: the device comprises a signal modulation module, a digital-to-analog conversion module, a signal amplification module, a reverse driver module, a photoelectric receiving module, a signal processing module, an analog-to-digital conversion module and a signal demodulation module;
the signal modulation module is used for coding and modulating a data signal to be transmitted, and is connected with the data conversion module;
the digital-to-analog conversion module is used for performing digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal, and is connected with the signal amplification module;
the signal amplification module is used for performing power amplification processing on the analog electric signal, and is connected with the reverse driver module;
the reverse driver module is used for carrying out secondary modulation on a downlink signal in the analog electric signal after the power amplification processing, and sending the downlink signal after the secondary modulation in an atmosphere channel in a light wave signal form for transmission;
the photoelectric receiving module is used for receiving the light wave signals in the atmospheric channel and performing photoelectric conversion on the received light wave signals;
the signal processing module is used for extracting uplink signals from the signals subjected to the photoelectric conversion and filtering and adjusting stray signals except the uplink signals, and is connected with the digital-to-analog conversion module;
the analog-to-digital conversion module is used for performing analog-to-digital conversion on the uplink signal, and is connected with the signal demodulation module;
the signal demodulation module is used for demodulating the uplink signal after the analog-to-digital conversion to obtain uplink signal data.
2. The passive autonomous visible light communication reverse signal link of claim 1, wherein the signal modulation module phase modulates downlink signals to be transmitted and the signal modulation module frequency modulates uplink signals to be transmitted.
3. The passive autonomous visible light communication reverse signal link of claim 1, wherein the signal processing module is further configured to amplify and filter the uplink signal.
4. The passive autonomous visible light communication reverse signal link of claim 1, wherein the reverse driver module is configured to perform a reverse modulation process based on a product of an uplink signal and a downlink signal.
5. A communication method based on the passive autonomous visible light communication reverse signal link of any of claims 1 to 4, the method comprising:
the signal modulation module is used for carrying out coding modulation on a data signal to be transmitted;
the digital-to-analog conversion module performs digital-to-analog conversion on the data signal subjected to the code modulation to obtain an analog electric signal;
the signal amplification module is used for carrying out power amplification processing on the analog electric signal;
the reverse driver module performs secondary modulation on a downlink signal in the analog electrical signal after the power amplification processing, and transmits the downlink signal after the secondary modulation to the photoelectric receiving module;
the signal processing module extracts an uplink signal from the downlink signal received by the photoelectric receiving module;
the analog-to-digital conversion module performs digital-to-analog conversion on the uplink signal;
and the signal demodulation module demodulates the uplink signal subjected to the analog-to-digital conversion to obtain uplink signal data.
6. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the steps of the method of communication of a passive autonomous visible light communication reverse signal link of claim 5 are implemented when the program is executed by the processor.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of communication of a passive autonomous visible light communication reverse signal link of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010979832.8A CN112260754A (en) | 2020-09-17 | 2020-09-17 | Passive autonomous visible light communication reverse signal link and communication method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010979832.8A CN112260754A (en) | 2020-09-17 | 2020-09-17 | Passive autonomous visible light communication reverse signal link and communication method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112260754A true CN112260754A (en) | 2021-01-22 |
Family
ID=74231339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010979832.8A Pending CN112260754A (en) | 2020-09-17 | 2020-09-17 | Passive autonomous visible light communication reverse signal link and communication method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112260754A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422030A (en) * | 2022-03-29 | 2022-04-29 | 天津七一二移动通信有限公司 | Half-duplex audio transmission device based on LIFI technology and implementation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203840342U (en) * | 2014-05-09 | 2014-09-17 | 杭州电子科技大学 | Full duplex wireless optical communication system based on modulating retro-reflector |
| CN104270193A (en) * | 2014-10-28 | 2015-01-07 | 长春理工大学 | Full duplex cat eye reverse modulation recovery free space laser communication system |
| CN105071854A (en) * | 2015-08-03 | 2015-11-18 | 中国人民解放军理工大学 | Single-light-source full-duplex retro-modulating wireless optical communication device and method |
| CN111628825A (en) * | 2020-04-23 | 2020-09-04 | 阳光凯讯(北京)科技有限公司 | Single-light-source full-duplex visible light communication system |
-
2020
- 2020-09-17 CN CN202010979832.8A patent/CN112260754A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203840342U (en) * | 2014-05-09 | 2014-09-17 | 杭州电子科技大学 | Full duplex wireless optical communication system based on modulating retro-reflector |
| CN104270193A (en) * | 2014-10-28 | 2015-01-07 | 长春理工大学 | Full duplex cat eye reverse modulation recovery free space laser communication system |
| CN105071854A (en) * | 2015-08-03 | 2015-11-18 | 中国人民解放军理工大学 | Single-light-source full-duplex retro-modulating wireless optical communication device and method |
| CN111628825A (en) * | 2020-04-23 | 2020-09-04 | 阳光凯讯(北京)科技有限公司 | Single-light-source full-duplex visible light communication system |
Non-Patent Citations (1)
| Title |
|---|
| 张欢: "可见光全双工通信系统设计", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422030A (en) * | 2022-03-29 | 2022-04-29 | 天津七一二移动通信有限公司 | Half-duplex audio transmission device based on LIFI technology and implementation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2838235B1 (en) | Method, system, apparatus and electronic signature tool for modulation mode self-adaptation in communication via audio interface | |
| CN104079351A (en) | Method and device for transmitting visible light communication data | |
| US20210376945A1 (en) | User equipment and method for transmitting synchronization signal block of same | |
| CN101299640B (en) | Data transmitting device, data receiving device, data receiving method, and data transmitting and receiving system | |
| CN104378163A (en) | Method and device for controlling receiving of visible light signals and device for receiving visible light signals | |
| CN104363564B (en) | Information push of mobile terminal system based on visible light communication label | |
| CN112260754A (en) | Passive autonomous visible light communication reverse signal link and communication method thereof | |
| US20220124791A1 (en) | Apparatus and method of wireless communication | |
| CN109586768B (en) | Near field communication method based on magnetic sensor | |
| WO2007136912A3 (en) | Communicating non-scheduling information in wireless networks | |
| EP2838236B1 (en) | Method, system, device, and electronic signature tool for audio communication modulation scheme self-adaptation | |
| EP2469790A1 (en) | Method, combiner and system for transmitting signals | |
| CN105337671B (en) | The means of communication and system of terminal are sent and received based on sound wave | |
| US20220377660A1 (en) | Power saving techniques for bb-rf interface | |
| CN111786725B (en) | Wireless communication device, method and electronic equipment | |
| WO2021052068A1 (en) | Method and apparatus for data transmission in back reflection communication | |
| CN209805816U (en) | Intelligent talkback equipment and system | |
| CN115842799A (en) | Mailbox general query method, system and related device in Beidou communication system | |
| CN102594989A (en) | Data communication method, system and terminal | |
| CN202019367U (en) | System realizing wireless communication in complex and narrow electromagnetic environment | |
| CN111601292A (en) | Wearable device image transmission system and method based on close-range broadcasting | |
| CN112436894A (en) | Passive autonomous visible light integrated service system | |
| Walter et al. | Deep learning based optical camera communications | |
| Hong et al. | Hybrid modulation scheme for indoor image sensor communication system using smartphone and LEDs | |
| US20210006601A1 (en) | Method of transmitting security information of single-bit adc wiretap channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |
|
| RJ01 | Rejection of invention patent application after publication |