CN110380781B - Signal enhancement method and system, and storage medium - Google Patents
Signal enhancement method and system, and storage medium Download PDFInfo
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- CN110380781B CN110380781B CN201910652014.4A CN201910652014A CN110380781B CN 110380781 B CN110380781 B CN 110380781B CN 201910652014 A CN201910652014 A CN 201910652014A CN 110380781 B CN110380781 B CN 110380781B
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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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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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
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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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/502—LED transmitters
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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
- H04B10/50—Transmitters
- H04B10/564—Power control
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Abstract
The embodiment of the application discloses a signal enhancement method and a system and a storage medium, wherein the signal enhancement method is applied to a signal enhancement system, and the signal enhancement system comprises the following steps: the signal enhancement method comprises the following steps: when the real-time signal parameter is smaller than the preset signal threshold, the terminal sends a starting instruction to the visible light equipment and generates and sends a light signal at the same time; the optical signal carries a frequency band parameter and a position parameter of the terminal; responding to the starting instruction, the visible light device receives the light signal and generates and emits visible light according to the light signal; the visible light carries frequency band parameters and position parameters; the frequency conversion equipment acquires visible light, and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave meets the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
Description
Technical Field
Embodiments of the present application relate to the field of communications technologies, and in particular, to a signal enhancement method and system, and a storage medium.
Background
With the continuous development of terminal technology and communication technology, terminals such as mobile phones and computers have become indispensable communication tools in people's life and work. At present, terminals mainly use radio waves as media for communication, wherein the signal strength of the terminals directly affects the communication quality during the communication process of the terminals.
However, the signal strength of the terminal is often reduced in a complex external environment, which results in a reduction in communication efficiency, and even a situation in which communication cannot be performed occurs, which reduces communication quality.
Disclosure of Invention
The embodiment of the application provides a signal enhancement method and system and a storage medium, which can overcome the defect of reduced communication efficiency under the condition of poor signal strength, effectively solve the problem of incapability of communication and greatly improve the communication quality.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the present application provides a signal enhancement method, which is applied to a signal enhancement system, wherein the signal enhancement system includes: the terminal, the visible light equipment and the frequency conversion equipment, wherein the method comprises the following steps:
when the real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment and generates and sends a light signal at the same time; the optical signal carries frequency band parameters and position parameters of the terminal;
responding to the starting instruction, the visible light device receives the optical signal and generates and emits visible light according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the frequency conversion equipment receives the visible light and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave satisfies the frequency band parameter;
and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
Optionally, before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold, the method further includes:
and the terminal carries out real-time power detection to obtain the real-time signal parameters.
Optionally, before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold, the method further includes:
and establishing wireless connection between the terminal and the visible light device.
Optionally, the sending, by the terminal, an opening instruction to the visible light device includes:
and the terminal sends the starting instruction to the visible light device through the wireless connection.
Optionally, the terminal generates an optical signal, including:
acquiring the frequency band parameter and the position parameter;
and modulating the frequency band parameter and the position parameter to obtain the optical signal.
Optionally, the performing frequency conversion processing on the visible light according to the frequency band parameter to obtain a target electromagnetic wave includes:
acquiring an alternating current signal corresponding to the visible light;
converting the alternating current signal into a direct current signal;
and generating the target electromagnetic wave according to the frequency band parameter and the direct current signal.
Optionally, the generating the target electromagnetic wave according to the frequency band parameter and the direct current signal includes:
converting the direct current signal into a target alternating current signal based on the frequency band parameter;
and generating the target electromagnetic wave according to the target alternating current signal.
Optionally, the sending, by the frequency conversion device, the target electromagnetic wave to the terminal according to the position parameter includes:
determining a receiving direction corresponding to the terminal according to the position parameter;
and transmitting the target electromagnetic wave according to the receiving direction.
An embodiment of the present application provides a signal enhancement system, which includes: a transmitting unit, a generating unit, a receiving unit and a frequency conversion unit,
the transmitting unit is used for transmitting a starting instruction to the visible light equipment by the terminal when the real-time signal parameter is smaller than a preset signal threshold;
the generating unit is used for generating an optical signal by the terminal; the optical signal carries frequency band parameters and position parameters of the terminal;
the sending unit is further configured to transmit the optical signal by the terminal;
the receiving unit is used for responding to the starting instruction, and the visible light device receives the light signal;
the generating unit is further used for generating visible light by the visible light device according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the transmitting unit is also used for transmitting the visible light;
the receiving unit is further configured to receive the visible light by the frequency conversion device;
the frequency conversion unit is used for the frequency conversion equipment to carry out frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave satisfies the frequency band parameter;
the sending unit is further configured to send, by the frequency conversion device, the target electromagnetic wave to the terminal according to the position parameter, so as to enhance the signal strength of the terminal through the target electromagnetic wave.
Optionally, the signal enhancement system further includes: a detection unit for detecting the position of the optical fiber,
the detection unit is used for detecting the real-time power of the terminal before the terminal sends the starting instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold value, so as to obtain the real-time signal parameter.
Optionally, the signal enhancement system further includes: the creation unit is configured to create a set of parameters,
the establishing unit is further configured to establish a wireless connection between the terminal and the visible light device before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold.
Optionally, the sending unit is specifically configured to send the start instruction to the visible light device through the wireless connection by the terminal.
Optionally, the generating unit is specifically configured to obtain the frequency band parameter and the position parameter; and modulating the frequency band parameter and the position parameter to obtain the optical signal.
Optionally, the frequency conversion unit is specifically configured to obtain an alternating current signal corresponding to the visible light; converting the alternating current signal into a direct current signal; generating the target electromagnetic wave according to the frequency band parameter and the direct current signal;
the frequency conversion unit is further specifically configured to convert the dc signal into a target ac signal based on the frequency band parameter; and generating the target electromagnetic wave according to the target alternating current signal.
Optionally, the sending unit is further specifically configured to determine a receiving direction corresponding to the terminal according to the location parameter; and transmitting the target electromagnetic wave in the receiving direction.
The embodiment of the application provides a signal enhancement system, which comprises a processor, a memory storing executable instructions of the processor, a terminal, a visible light device and a frequency conversion device, wherein when the instructions are executed by the processor, the signal enhancement method is realized.
The embodiment of the application provides a computer readable storage medium, on which a program is stored, which is applied in a signal enhancement system, and when the program is executed by a processor, the program implements the signal enhancement method as described above.
The embodiment of the application provides a signal enhancement method and a system and a storage medium, wherein the signal enhancement method is applied to a signal enhancement system, the signal enhancement system comprises a terminal, visible light equipment and frequency conversion equipment, when a real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment, and simultaneously generates and sends a light signal; the optical signal carries a frequency band parameter and a position parameter of the terminal; responding to the starting instruction, the visible light device receives the light signal and generates and emits visible light according to the light signal; the visible light carries frequency band parameters and position parameters; the frequency conversion equipment acquires visible light, and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave meets the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave. Therefore, in the embodiment of the application, when the signal parameter is smaller than the preset signal threshold value, that is, the signal intensity is poor, the terminal in the signal enhancement system may generate the optical signal according to the corresponding frequency band parameter and the corresponding position parameter, and transmit the optical signal to the visible light device, the visible light device may forward the frequency band parameter and the position parameter to the frequency conversion device through the generated visible light, and the frequency conversion device in the signal enhancement system may generate the target electromagnetic wave according to the frequency band parameter, and transmit the target electromagnetic wave to the terminal according to the position parameter, so that the signal intensity of the terminal may be enhanced through the target electromagnetic wave. That is to say, when the signal intensity of the terminal is poor, the signal enhancement system can utilize the frequency conversion device to perform frequency conversion processing on visible light generated by the visible light device based on the frequency band parameter and the position parameter corresponding to the terminal, and generate and transmit target electromagnetic waves, so that the terminal can receive the original network electromagnetic waves and can also receive the target electromagnetic waves based on the visible light, thereby realizing superposition of visible light communication and network communication, further overcoming the defect of reduced communication efficiency under the condition of poor signal intensity, effectively solving the problem of incapability of communication, and greatly improving the communication quality.
Drawings
Fig. 1 is a schematic flow chart illustrating an implementation of a signal enhancement method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a signal enhancement system;
FIG. 3 is a schematic diagram of a configuration in which an LED transmitter generates and transmits an optical signal;
FIG. 4 is a schematic diagram of a structure of an LED receiver receiving an optical signal;
fig. 5 is a first schematic structural diagram of a signal enhancement system according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a second component of a signal enhancement system according to an embodiment of the present application.
Detailed Description
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. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.
With the continuous development of the science and technology society, terminals such as mobile phones and computers have been developed to one or more hands, and become indispensable communication tools in people's life and work. At present, radio waves are used as media for communication of terminals, as is well known, the radiation of the radio waves is very large, the human health is affected, the communication quality is also greatly affected by the signal intensity, and the visible radio frequency communication technology also exists in many places which are not satisfactory. For example, as cities continue to develop, floors of buildings in cities are higher and higher, and as the floors increase, the situation that wireless signals are weak usually occurs on lower floors or higher floors, so that signals received by terminals on the floors are weak, the communication efficiency of the terminals is reduced, even the terminals cannot communicate, and if the networks need to be used urgently, the signals are poor, and unnecessary loss is caused.
The signal enhancement method is applied to a signal enhancement system, wherein the signal enhancement system can comprise a terminal, a visible light device and a frequency conversion device. Specifically, in the application, when the signal intensity of the terminal is poor, the signal enhancement system can adopt visible light to perform communication, so that the defect of reduction of communication efficiency can be overcome under the condition of poor signal intensity, and the problem of incapability of communication is effectively solved.
At present, the visible Light communication technology can mainly implement communication by providing a Light source through a Light Emitting Diode (LED), and particularly, the indoor LED can mainly apply the communication technology to an indoor wireless broadband access network. The white light LED has the advantages of low power consumption, long service life, small size, environmental protection and the like, has very high response sensitivity, and can be used for carrying out ultrahigh-speed data communication. Compared with traditional radio frequency communication and other optical wireless communication, the visible light communication based on the LED light source has no electromagnetic radiation, the light source has two basic characteristic parameters of luminous intensity and luminous power, and the white light LED does not radiate; the light just can communicate, does not have the communication blind area, convenient and fast.
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.
An embodiment of the present application provides a signal enhancement method, which is applied in a signal enhancement system, where the signal enhancement system may include: fig. 1 is a schematic flow chart of an implementation of a signal enhancement method provided in an embodiment of the present application, and as shown in fig. 1, in the embodiment of the present application, a method for implementing signal enhancement by a signal enhancement system may include the following steps:
In the embodiment of the application, when the real-time signal parameter is smaller than the preset signal threshold, the terminal in the signal enhancement system may send a start instruction to the visible light device, and meanwhile, the terminal may also generate an optical signal. Specifically, the optical signal generated by the terminal may carry a frequency band parameter and a location parameter of the terminal.
Further, in the embodiment of the present application, the frequency band parameter may be used to represent a frequency band or a frequency spectrum corresponding to an electromagnetic wave when the terminal performs communication and receives and sends a signal; the location parameters may be used for determination of a specific location of the terminal. Specifically, the signal enhancement system may determine a specific frequency of the electromagnetic wave that the terminal may receive through the frequency band parameter, and the signal enhancement system may determine a specific direction in which the terminal receives the signal through the location parameter.
It should be noted that, in the embodiment of the present application, the signal enhancement method may be applied to a signal enhancement system, and fig. 2 is a schematic diagram of the signal enhancement system, and as shown in fig. 2, the signal enhancement system may include a terminal, a visible light device, and a frequency conversion device. The terminal, the visible light device and the frequency conversion device can be in the same environment. For example, the terminal, the visible light device and the frequency conversion device are all located indoors at the same time.
Further, in the embodiments of the present application, the terminal may be any device having communication and storage functions. For example: tablet computers, mobile phones, electronic readers, remote controllers, Personal Computers (PCs), notebook computers, vehicle-mounted devices, network televisions, wearable devices, and the like.
It should be noted that, in the embodiment of the present application, the visible light device may be an intelligent lighting device which has a function of emitting visible light and is capable of receiving an optical signal. For example, the visible light device may be a smart light bulb having transmitting and receiving functions, an LED device having transmitting and receiving functions, or the like.
Further, in the embodiment of the present application, the terminal may first detect and acquire the current signal parameter, and then may compare the current signal parameter with the preset signal threshold, so as to determine whether the current signal strength is poor according to the comparison result. Specifically, if the current signal parameter is smaller than the preset signal threshold, the signal enhancement system may consider that the current signal strength is poor; accordingly, if the current signal parameter is smaller than the preset signal threshold, the signal enhancement system may determine that the current signal strength is better and will not affect the communication quality.
It should be noted that, in the embodiment of the present application, when detecting and acquiring the current signal parameter, the terminal may perform real-time power detection first, so as to obtain the real-time signal parameter. That is, the terminal may determine the real-time signal parameter through real-time detection of power, wherein the real-time signal parameter may be used to characterize the signal strength of the terminal, and specifically, the unit of the real-time signal parameter may be dBm, dBm is calculated by logarithm, so dBm is generally a negative number, and a larger value of the number indicates a better signal, for example, a signal of-90 dBm is better than a signal of-100 dBm, and a signal of-55 dBm is better than a signal of-62 dBm.
Further, in the embodiment of the present application, the preset signal threshold may be a specific value preset by the signal enhancement system for determining the strength of the signal strength. Specifically, the signal enhancement device may determine that the signal strength of the terminal is poor and the communication quality may be reduced if the real-time signal parameter of the terminal is smaller than the preset signal threshold, so that the signal enhancement needs to be performed by using visible light.
It should be noted that, in the embodiment of the present application, when the signal enhancement system determines that the signal strength is poor according to the real-time signal parameter and the preset signal threshold, and needs to perform signal enhancement, the terminal in the signal enhancement system may send an opening instruction to the visible light device, where the opening instruction may be used to instruct to open the visible light device, so that the visible light device may perform opening processing.
Further, in the embodiment of the present application, just as the wireless connection is established between the terminal in the signal enhancement system and the visible light device, the terminal may send the open instruction to the visible light device through the wireless connection.
It should be noted that, in the embodiment of the present application, after the signal enhancement system determines that signal enhancement is required, the terminal in the signal enhancement system may generate an optical signal and transmit the optical signal while transmitting the turn-on instruction to the visible light device.
Further, in the embodiment of the present application, when the terminal generates the optical signal, the frequency band parameter and the position parameter corresponding to the terminal may be obtained first, and then the modulation processing is performed according to the frequency band parameter and the position parameter, so that the optical signal may be generated. That is to say, in the embodiment of the present application, the optical signal carries a frequency band parameter and a location parameter corresponding to the terminal.
Further, in an embodiment of the present application, a terminal may be configured with an LED transmitter therein, and the terminal may generate an optical signal through the LED transmitter and emit the optical signal after generating the optical signal. In particular, the terminal may generate and transmit the optical signal through a pre-configured LED transmitter.
Fig. 3 is a schematic structural diagram of an LED transmitter generating and transmitting an optical signal, and as shown in fig. 3, the LED transmitter may include a preprocessing module and a transmitting module, specifically, the preprocessing module in the LED transmitter may encode and modulate a frequency band parameter and a position parameter, so as to convert an electromagnetic wave signal into an LED alternating current signal, that is, into an optical signal, and then transmit the optical signal carrying the frequency band parameter and the position parameter through the transmitting module.
102, responding to a starting instruction, receiving an optical signal by a visible light device, and generating and emitting visible light according to the optical signal; the visible light carries frequency band parameters and position parameters.
In the embodiment of the application, after the terminal in the signal enhancement system sends the start instruction to the visible light device and simultaneously generates and sends the optical signal, the visible light device in the signal enhancement system may respond to the start instruction, receive the optical signal, and then may generate and send visible light according to the optical signal. Specifically, the visible light generated by the visible light device also carries a frequency band parameter and a position parameter corresponding to the terminal.
It should be noted that, in the embodiment of the present application, after receiving the turn-on command, the visible light device in the signal enhancement system may respond to the turn-on command by generating visible light.
Further, in the embodiment of the application, after receiving the optical signal sent by the terminal, the visible light device may extract the frequency band parameter and the position parameter carried in the optical signal, and then forward the frequency band parameter and the position parameter corresponding to the terminal through the visible light.
It should be noted that, in the embodiment of the present application, the visible light device may be configured with an LED receiver, and the terminal may receive the light signal through the LED receiver and extract valid information in the light signal after receiving the light signal. Specifically, the terminal can receive the optical signal and acquire information through a pre-configured LED receiver.
Fig. 4 is a schematic structural diagram of an LED receiver receiving an optical signal, and as shown in fig. 4, the LED receiver may include a photoelectric conversion module and a signal processing module, specifically, the photoelectric conversion module in the LED receiver may convert the optical signal to obtain an electrical signal corresponding to the optical signal, and then demodulate the electrical signal through the set signal processing module, so as to extract a frequency band parameter and a position parameter carried in the optical signal.
Further, in the embodiment of the application, after the frequency band parameter and the position parameter carried in the optical signal are extracted by the visible light device, the frequency band parameter and the position parameter can be forwarded by generating visible light. Specifically, the visible light device may generate visible light according to the frequency band parameter and the position parameter, and then emit the visible light. That is to say, the visible light generated by the visible light device also carries the frequency band parameter and the location parameter corresponding to the terminal.
103, receiving the visible light by the frequency conversion equipment, and performing frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave satisfies the frequency band parameter.
In the embodiment of the application, after the visible light equipment in the signal enhancement system generates and emits the visible light, the frequency conversion equipment in the signal enhancement system can acquire the visible light, and then the frequency conversion processing can be performed on the visible light according to the frequency band parameters carried in the visible light, so that the target electromagnetic wave meeting the frequency band parameters can be generated.
It should be noted that, in the embodiment of the present application, since the frequency band parameter carried in the visible light corresponds to the terminal, the target electromagnetic wave obtained by performing the frequency conversion processing according to the frequency band parameter by the frequency conversion device can meet the frequency band requirement of the terminal for transmitting and receiving the signal, that is, the target electromagnetic wave can meet the frequency band parameter, so that it can be ensured that the terminal can receive the target electromagnetic wave generated and sent by the frequency conversion device.
Further, in the embodiment of the application, after receiving the visible light generated and emitted by the visible light device, the frequency conversion device may extract the frequency band parameter carried in the visible light, and then may perform frequency conversion processing on the visible light according to the frequency band parameter, so as to obtain the target electromagnetic wave.
It should be noted that, in the embodiment of the present application, when the frequency conversion device performs frequency conversion processing on visible light according to the frequency band parameter, the frequency conversion device may first convert the alternating current signal corresponding to the visible light into a direct current signal, and then invert the direct current signal into a target alternating current signal meeting the terminal frequency band requirement according to the frequency band parameter, so as to generate the target electromagnetic wave based on the target alternating current signal.
That is, in the present application, the frequency conversion signal may utilize a frequency conversion technology to convert an ac signal corresponding to visible light into a dc signal, and then invert the dc signal into a target ac signal meeting frequency band parameters of the terminal for receiving and transmitting electromagnetic waves, so as to generate a target electromagnetic wave.
And 104, the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
In the embodiment of the application, after the frequency conversion device in the signal enhancement system performs frequency conversion processing on visible light according to the frequency band parameter to obtain the target electromagnetic wave, the target electromagnetic wave can be sent to the terminal according to the position parameter carried in the visible light, so that the terminal can achieve enhancement of the signal intensity by receiving the target electromagnetic wave.
Further, in the embodiment of the present application, since the position parameter carried in the visible light corresponds to the terminal, that is, the position parameter can be used for determining the direction in which the terminal receives and transmits the electromagnetic wave, the frequency conversion device can transmit the target electromagnetic wave to the terminal according to the position parameter, and can ensure that the target electromagnetic wave can be married and searched by the terminal, so that the terminal can receive the target electromagnetic wave transmitted by the frequency conversion device while receiving the original network electromagnetic wave.
It should be noted that, in the embodiment of the present application, because the frequency of the target electromagnetic wave sent by the frequency conversion device to the terminal can meet the frequency band parameter of the electromagnetic wave for the terminal to send and receive the signal, and the target electromagnetic wave is sent according to the position corresponding to the terminal, that is, the frequency conversion device sends the target electromagnetic wave to the direction in which the terminal receives the signal, the terminal can receive the target electromagnetic wave sent by the frequency conversion device while receiving the original network electromagnetic wave, that is, the terminal receives the original network electromagnetic wave and the target electromagnetic wave in a superimposed manner, so that the sending and receiving power of the terminal can be enhanced, and thus the capability of the terminal to receive the signal can be enhanced, and the signal strength is further enhanced.
In the embodiment of the application, further, after the visible light device receives the optical signal and generates and emits visible light according to the optical signal, in addition to forwarding the frequency band parameter and the position parameter in the optical signal to the frequency conversion device through visible light, the frequency band parameter and the position parameter in the optical signal may also be forwarded to a Wireless local area network (WiFi) or bluetooth, so that the communication quality in an environment with weak signals may be improved through the internet based on WiFi or bluetooth.
That is to say, in the embodiment of the application, the terminal modulates the frequency band parameter and the position parameter that need to be sent into the optical signal through the LED transmitter and sends out, and the frequency band parameter and the position parameter that need to be sent can be forwarded through the visible light device, and the visible light device can be forwarded to the frequency conversion device and also can be forwarded to WIFI or bluetooth when forwarding, so that the communication quality can be improved in the environment with weak signals.
The signal enhancement method is applied to a signal enhancement system, wherein the signal enhancement system comprises a terminal, visible light equipment and frequency conversion equipment, when a real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment, and generates and sends a light signal; the optical signal carries a frequency band parameter and a position parameter of the terminal; responding to the starting instruction, the visible light device receives the light signal and generates and emits visible light according to the light signal; the visible light carries frequency band parameters and position parameters; the frequency conversion equipment acquires visible light, and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave meets the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave. Therefore, in the embodiment of the application, when the signal parameter is smaller than the preset signal threshold value, that is, the signal intensity is poor, the terminal in the signal enhancement system may generate the optical signal according to the corresponding frequency band parameter and the corresponding position parameter, and transmit the optical signal to the visible light device, the visible light device may forward the frequency band parameter and the position parameter to the frequency conversion device through the generated visible light, and the frequency conversion device in the signal enhancement system may generate the target electromagnetic wave according to the frequency band parameter, and transmit the target electromagnetic wave to the terminal according to the position parameter, so that the signal intensity of the terminal may be enhanced through the target electromagnetic wave. That is to say, when the signal intensity of the terminal is poor, the signal enhancement system can utilize the frequency conversion device to perform frequency conversion processing on visible light generated by the visible light device based on the frequency band parameter and the position parameter corresponding to the terminal, and generate and transmit target electromagnetic waves, so that the terminal can receive the original network electromagnetic waves and can also receive the target electromagnetic waves based on the visible light, thereby realizing superposition of visible light communication and network communication, further overcoming the defect of reduced communication efficiency under the condition of poor signal intensity, effectively solving the problem of incapability of communication, and greatly improving the communication quality.
Based on the foregoing embodiment, in another embodiment of the present application, a frequency conversion device in a signal enhancement system performs frequency conversion processing on visible light according to a frequency band parameter, and a method for obtaining a target electromagnetic wave may include the following steps:
step 201, acquiring an alternating current signal corresponding to visible light.
In the embodiment of the application, after receiving the visible light generated and emitted by the visible light device, the frequency conversion device in the signal enhancement system may first acquire an alternating current signal corresponding to the visible light.
It should be noted that, in the embodiment of the present application, after receiving the visible light emitted by the visible light device, the frequency conversion device may perform a photoelectric conversion process first, so as to convert the visible light into a corresponding ac signal.
Step 202, converting the ac signal into a dc signal.
And step 203, generating the target electromagnetic wave according to the frequency band parameter and the direct current signal.
In the embodiment of the application, after the frequency conversion device acquires the alternating current signal corresponding to the visible light signal, the alternating current signal can be converted into a direct current signal corresponding to the visible light signal, and then the target electromagnetic wave is generated according to the frequency band parameter corresponding to the terminal and the direct current signal corresponding to the visible light.
It should be noted that, in the embodiment of the present application, the frequency conversion device may convert the direct current signal into the target alternating current signal again based on the frequency band parameter corresponding to the terminal, where a frequency of the target alternating current signal satisfies the frequency band parameter.
Further, in the embodiment of the present application, after the frequency conversion device inverts the dc signal into the target ac signal meeting the frequency band parameter, the frequency conversion device may generate the target electromagnetic wave according to the target ac signal. Therefore, the frequency conversion equipment inverts the direct current signal into the target alternating current signal according to the frequency band parameter corresponding to the terminal, and therefore the target electromagnetic wave generated by the frequency conversion equipment based on the target alternating current signal also meets the frequency band parameter corresponding to the terminal.
In an embodiment of the present application, further, a method for a frequency conversion device in a signal enhancement system to send target electromagnetism to a terminal according to a location parameter may include the following steps:
and 301, determining a receiving direction corresponding to the terminal according to the position parameter.
In the embodiment of the application, after the frequency conversion device performs frequency conversion processing on the visible light according to the frequency band parameter to obtain the target electromagnetic wave, the receiving direction corresponding to the terminal can be determined according to the position parameter carried in the visible light.
It should be noted that, in the embodiment of the present application, since the location parameter may be used to determine the specific location of the terminal, that is, the signal enhancement system may determine the specific direction in which the terminal receives the signal through the location parameter, the frequency conversion device may extract the location parameter corresponding to the terminal carried in the visible light first, and then determine the receiving direction corresponding to the terminal based on the location parameter.
Step 302, transmitting the target electromagnetic wave according to the receiving direction.
In the embodiment of the application, after the frequency conversion device determines the receiving direction corresponding to the terminal according to the position parameter, the frequency conversion device can send the target electromagnetic wave according to the receiving direction.
Further, in the embodiment of the present application, after the frequency conversion device generates the target electromagnetic wave and determines the receiving direction when the terminal receives the signal, the frequency conversion device may send the target electromagnetic wave according to the receiving direction corresponding to the terminal, so that it is ensured that the target electromagnetic wave satisfies the frequency band parameter corresponding to the terminal, and it is also ensured that the terminal can receive the target electromagnetic wave.
The signal enhancement method is applied to a signal enhancement system, wherein the signal enhancement system comprises a terminal, visible light equipment and frequency conversion equipment, when a real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment, and generates and sends a light signal; the optical signal carries a frequency band parameter and a position parameter of the terminal; responding to the starting instruction, the visible light device receives the light signal and generates and emits visible light according to the light signal; the visible light carries frequency band parameters and position parameters; the frequency conversion equipment acquires visible light, and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave meets the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave. Therefore, in the embodiment of the application, when the signal parameter is smaller than the preset signal threshold value, that is, the signal intensity is poor, the terminal in the signal enhancement system may generate the optical signal according to the corresponding frequency band parameter and the corresponding position parameter, and transmit the optical signal to the visible light device, the visible light device may forward the frequency band parameter and the position parameter to the frequency conversion device through the generated visible light, and the frequency conversion device in the signal enhancement system may generate the target electromagnetic wave according to the frequency band parameter, and transmit the target electromagnetic wave to the terminal according to the position parameter, so that the signal intensity of the terminal may be enhanced through the target electromagnetic wave. That is to say, when the signal intensity of the terminal is poor, the signal enhancement system can utilize the frequency conversion device to perform frequency conversion processing on visible light generated by the visible light device based on the frequency band parameter and the position parameter corresponding to the terminal, and generate and transmit target electromagnetic waves, so that the terminal can receive the original network electromagnetic waves and can also receive the target electromagnetic waves based on the visible light, thereby realizing superposition of visible light communication and network communication, further overcoming the defect of reduced communication efficiency under the condition of poor signal intensity, effectively solving the problem of incapability of communication, and greatly improving the communication quality.
Based on the foregoing embodiment, in another embodiment of the present application, fig. 5 is a schematic structural diagram of a composition of a signal enhancement system provided in the embodiment of the present application, and as shown in fig. 5, the signal enhancement system 1 provided in the embodiment of the present application may include: a sending unit 11, a generating unit 12, a receiving unit 13, a frequency converting unit 14, a detecting unit 15 and a establishing unit 16.
The sending unit 11 is configured to send a start instruction to the visible light device by the terminal when the real-time signal parameter is smaller than a preset signal threshold;
the generating unit 12 is used for the terminal to generate an optical signal; the optical signal carries frequency band parameters and position parameters of the terminal;
the sending unit 11 is further configured to transmit the optical signal by the terminal;
the receiving unit 13 is configured to respond to the turn-on instruction, and the visible light device receives the light signal;
the generating unit 12 is further configured to generate visible light by the visible light device according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the sending unit 11 is further configured to emit the visible light;
the receiving unit 13 is further configured to receive the visible light by the frequency conversion device;
the frequency conversion unit 14 is configured to perform frequency conversion processing on the visible light by the frequency conversion device according to the frequency band parameter, so as to obtain a target electromagnetic wave; wherein the target electromagnetic wave satisfies the frequency band parameter;
the sending unit 11 is further configured to send, by the frequency conversion device, the target electromagnetic wave to the terminal according to the position parameter, so as to enhance the signal strength of the terminal through the target electromagnetic wave.
Further, in an embodiment of the present application, the detecting unit 15 is configured to, when the real-time signal parameter is smaller than a preset signal threshold, perform real-time power detection by the terminal before the terminal sends the start instruction and the optical signal to the visible light device, so as to obtain the real-time signal parameter.
Further, in an embodiment of the present application, the establishing unit 16 is further configured to establish a wireless connection between the terminal and the visible light device before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold.
Further, in an embodiment of the present application, the sending unit 11 is specifically configured to send the start instruction to the visible light device through the wireless connection by the terminal.
Further, in an embodiment of the present application, the generating unit 12 is specifically configured to obtain the frequency band parameter and the position parameter; and modulating the frequency band parameter and the position parameter to obtain the optical signal.
Further, in an embodiment of the present application, the frequency conversion unit 14 is specifically configured to obtain an alternating current signal corresponding to the visible light; converting the alternating current signal into a direct current signal; and generating the target electromagnetic wave according to the frequency band parameter and the direct current signal.
Further, in an embodiment of the present application, the frequency conversion unit 14 is further specifically configured to convert the direct current signal into a target alternating current signal based on the frequency band parameter; and generating the target electromagnetic wave according to the target alternating current signal.
Further, in an embodiment of the present application, the sending unit 11 is further specifically configured to determine a receiving direction corresponding to the terminal according to the location parameter; and transmitting the target electromagnetic wave in the receiving direction.
Fig. 6 is a schematic diagram of a second composition structure of the signal enhancement system according to the embodiment of the present disclosure, as shown in fig. 6, the signal enhancement system 1 according to the embodiment of the present disclosure may further include a processor 17 and a memory 18 storing executable instructions of the processor 17, and further, the signal enhancement system 1 may further include a communication interface 19, and a bus 110 for connecting the processor 17, the memory 18, and the communication interface 19.
Further, in the embodiment of the present application, the signal enhancement system 1 may further include a terminal 111, a visible light device 112, and a frequency conversion device 113.
In an embodiment of the present Application, the Processor 17 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a ProgRAMmable Logic Device (PLD), a Field ProgRAMmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic devices for implementing the above processor functions may be other devices, and the embodiments of the present application are not limited in particular. The signal enhancement system 1 may further comprise a memory 18, which memory 18 may be connected to the processor 17, wherein the memory 18 is adapted to store executable program code comprising computer operating instructions, and wherein the memory 18 may comprise a high speed RAM memory and may further comprise a non-volatile memory, such as at least two disk memories.
In the embodiment of the present application, the bus 110 is used to connect the communication interface 19, the processor 17, and the memory 18 and the intercommunication among these devices.
In an embodiment of the present application, the memory 18 is used for storing instructions and data.
Further, in an embodiment of the present application, the processor 17 is configured to send, when the real-time signal parameter is smaller than a preset signal threshold, the terminal sends a start instruction to the visible light device, and simultaneously generates and sends a light signal; the optical signal carries frequency band parameters and position parameters of the terminal; responding to the starting instruction, the visible light device receives the optical signal and generates and emits visible light according to the optical signal; the visible light carries the frequency band parameter and the position parameter; the frequency conversion equipment receives the visible light and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave satisfies the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
In practical applications, the Memory 18 may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (Hard Disk Drive, HDD) or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the processor 17.
In addition, each functional module in this embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.
Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The signal enhancement system comprises a terminal, visible light equipment and frequency conversion equipment, wherein when a real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment and generates and sends a light signal; the optical signal carries a frequency band parameter and a position parameter of the terminal; responding to the starting instruction, the visible light device receives the light signal and generates and emits visible light according to the light signal; the visible light carries frequency band parameters and position parameters; the frequency conversion equipment acquires visible light, and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave meets the frequency band parameter; and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave. Therefore, in the embodiment of the application, when the signal parameter is smaller than the preset signal threshold value, that is, the signal intensity is poor, the terminal in the signal enhancement system may generate the optical signal according to the corresponding frequency band parameter and the corresponding position parameter, and transmit the optical signal to the visible light device, the visible light device may forward the frequency band parameter and the position parameter to the frequency conversion device through the generated visible light, and the frequency conversion device in the signal enhancement system may generate the target electromagnetic wave according to the frequency band parameter, and transmit the target electromagnetic wave to the terminal according to the position parameter, so that the signal intensity of the terminal may be enhanced through the target electromagnetic wave. That is to say, when the signal intensity of the terminal is poor, the signal enhancement system can utilize the frequency conversion device to perform frequency conversion processing on visible light generated by the visible light device based on the frequency band parameter and the position parameter corresponding to the terminal, and generate and transmit target electromagnetic waves, so that the terminal can receive the original network electromagnetic waves and can also receive the target electromagnetic waves based on the visible light, thereby realizing superposition of visible light communication and network communication, further overcoming the defect of reduced communication efficiency under the condition of poor signal intensity, effectively solving the problem of incapability of communication, and greatly improving the communication quality.
An embodiment of the present application provides a computer-readable storage medium, on which a program is stored, which when executed by a processor implements the signal enhancement method as described above.
Specifically, the program instructions corresponding to a signal enhancement method in the present embodiment may be stored on a storage medium such as an optical disc, a hard disc, a usb disk, etc., and when the program instructions corresponding to a signal enhancement method in the storage medium are read or executed by an electronic device, the method includes the following steps:
when the real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment and generates and sends a light signal at the same time; the optical signal carries frequency band parameters and position parameters of the terminal;
responding to the starting instruction, the visible light device receives the optical signal and generates and emits visible light according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the frequency conversion equipment receives the visible light and performs frequency conversion processing on the visible light according to the frequency band parameters to obtain target electromagnetic waves; wherein the target electromagnetic wave satisfies the frequency band parameter;
and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application 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, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. 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 block or blocks and/or flowchart 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 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 block or blocks in the flowchart and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.
Claims (16)
1. A signal enhancement method, applied in a signal enhancement system, wherein the signal enhancement system comprises: the terminal, the visible light equipment and the frequency conversion equipment, wherein the method comprises the following steps:
when the real-time signal parameter is smaller than a preset signal threshold value, the terminal sends a starting instruction to the visible light equipment and generates and sends a light signal at the same time; the optical signal carries frequency band parameters and position parameters of the terminal;
responding to the starting instruction, the visible light device receives the optical signal and generates and emits visible light according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the frequency conversion equipment receives the visible light, acquires an alternating current signal corresponding to the visible light, converts the alternating current signal into a direct current signal, and generates a target electromagnetic wave according to the frequency band parameter and the direct current signal; wherein the target electromagnetic wave satisfies the frequency band parameter;
and the frequency conversion equipment sends the target electromagnetic wave to the terminal according to the position parameter so as to enhance the signal intensity of the terminal through the target electromagnetic wave.
2. The method according to claim 1, wherein before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold, the method further comprises:
and the terminal carries out real-time power detection to obtain the real-time signal parameters.
3. The method according to claim 1, wherein before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold, the method further comprises:
and establishing wireless connection between the terminal and the visible light device.
4. The method according to claim 3, wherein the terminal sends an on command to the visible light device, comprising:
and the terminal sends the starting instruction to the visible light device through the wireless connection.
5. The method of claim 1, wherein the terminal generates an optical signal comprising:
acquiring the frequency band parameter and the position parameter;
and modulating the frequency band parameter and the position parameter to obtain the optical signal.
6. The method according to claim 1, wherein the generating the target electromagnetic wave according to the frequency band parameter and the direct current signal comprises:
converting the direct current signal into a target alternating current signal based on the frequency band parameter;
and generating the target electromagnetic wave according to the target alternating current signal.
7. The method according to claim 1, wherein the frequency conversion device transmits the target electromagnetic wave to the terminal according to the location parameter, and comprises:
determining a receiving direction corresponding to the terminal according to the position parameter;
and transmitting the target electromagnetic wave according to the receiving direction.
8. A signal enhancement system, characterized in that the signal enhancement system comprises: a transmitting unit, a generating unit, a receiving unit and a frequency conversion unit,
the transmitting unit is used for transmitting a starting instruction to the visible light equipment by the terminal when the real-time signal parameter is smaller than a preset signal threshold;
the generating unit is used for generating an optical signal by the terminal; the optical signal carries frequency band parameters and position parameters of the terminal;
the sending unit is further configured to transmit the optical signal by the terminal;
the receiving unit is used for responding to the starting instruction, and the visible light device receives the light signal;
the generating unit is further used for generating visible light by the visible light device according to the optical signal; the visible light carries the frequency band parameter and the position parameter;
the transmitting unit is also used for transmitting the visible light;
the receiving unit is further configured to receive the visible light by the frequency conversion device;
the frequency conversion unit is used for acquiring an alternating current signal corresponding to the visible light; converting the alternating current signal into a direct current signal; generating a target electromagnetic wave according to the frequency band parameter and the direct current signal; wherein the target electromagnetic wave satisfies the frequency band parameter;
the sending unit is further configured to send, by the frequency conversion device, the target electromagnetic wave to the terminal according to the position parameter, so as to enhance the signal strength of the terminal through the target electromagnetic wave.
9. The signal enhancement system of claim 8, further comprising: a detection unit for detecting the position of the optical fiber,
the detection unit is used for detecting the real-time power of the terminal before the terminal sends the starting instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold value, so as to obtain the real-time signal parameter.
10. The signal enhancement system of claim 8, further comprising: the creation unit is configured to create a set of parameters,
the establishing unit is further configured to establish a wireless connection between the terminal and the visible light device before the terminal sends the start instruction and the optical signal to the visible light device when the real-time signal parameter is smaller than the preset signal threshold.
11. The signal enhancement system of claim 10,
the sending unit is specifically configured to send the start instruction to the visible light device through the wireless connection by the terminal.
12. The signal enhancement system of claim 8,
the generating unit is specifically configured to acquire the frequency band parameter and the position parameter; and modulating the frequency band parameter and the position parameter to obtain the optical signal.
13. The signal enhancement system of claim 8,
the frequency conversion unit is further specifically configured to convert the dc signal into a target ac signal based on the frequency band parameter; and generating the target electromagnetic wave according to the target alternating current signal.
14. The signal enhancement system of claim 8,
the sending unit is further specifically configured to determine a receiving direction corresponding to the terminal according to the location parameter; and transmitting the target electromagnetic wave in the receiving direction.
15. A signal enhancement system comprising a processor, a memory storing instructions executable by the processor, a terminal, a visible light device, and a frequency conversion device, the instructions when executed by the processor implementing the method of any one of claims 1-7.
16. A computer-readable storage medium, on which a program is stored, for use in a signal enhancement system, characterized in that the program, when executed by a processor, implements the method according to any one of claims 1-7.
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