CN114124119A - Multi-frequency system gain self-adaption method, device, electronic equipment and storage medium - Google Patents
Multi-frequency system gain self-adaption method, device, electronic equipment and storage medium Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
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- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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Abstract
The present disclosure relates to a multi-frequency system gain adaptive method, apparatus, electronic device and storage medium, wherein the method applied to a remote unit comprises: receiving a combined communication signal sent by an extension unit, extracting a first synchronous signal from the combined communication signal, adjusting an attenuation value of a first public attenuation module based on the first synchronous signal, extracting a second synchronous signal from the combined communication signal, checking whether the attenuation value of the first public attenuation module meets a preset condition based on the second synchronous signal, and adjusting the attenuation value of the second public attenuation module based on the second synchronous signal under the condition that the attenuation value of the first public attenuation module meets the preset condition. Therefore, the existing synchronous signals are used for gain adjustment operation, the system response time is greatly shortened, the link gain adjustment is automatically and quickly completed, and the system link stability is improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for gain adaptation in a multi-frequency system, an electronic device, and a storage medium.
Background
With the gradual popularization of the scale networking of the 4G network and the 5G network, the advantages of the distributed antenna system supporting multiple frequency bands are more and more prominent, and the applications are more and more.
In a distributed antenna system, optical fiber transmission is adopted between a host unit and an extension unit, analog feeder transmission is adopted between the extension unit and a remote unit, and due to different lengths of feeders, feeder material, manufacturing process and the like can affect insertion loss of the feeders, so that index performance of each frequency band of each remote unit is consistent, gain balance of the whole communication system is ensured, a theoretical networking coverage effect is achieved, and requirements of system stability and engineering convenience are met.
Therefore, how to quickly and efficiently realize the link gain adaptation becomes a difficulty of a feeder remote system.
Disclosure of Invention
To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a multi-frequency system gain adaptation method, apparatus, electronic device, and storage medium.
The embodiment of the disclosure provides a multi-frequency system gain self-adaptive method, which is applied to a remote unit and comprises the following steps:
receiving a combined communication signal sent by an expansion unit;
extracting a first synchronization signal from the combined communication signal, and adjusting an attenuation value of a first common attenuation module based on the first synchronization signal;
extracting a second synchronous signal from the combined communication signal, and checking whether the attenuation value of the first common attenuation module meets a preset condition or not based on the second synchronous signal;
and adjusting the attenuation value of a second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets a preset condition.
Optionally, the extracting a first synchronization signal from the combined communication signal, and adjusting an attenuation value of a first common attenuation module based on the first synchronization signal includes:
coupling the combined communication signal to obtain a first candidate signal, and filtering the first candidate signal to obtain the first synchronization signal;
detecting the amplitude of the first synchronous signal, comparing the amplitude of the first synchronous signal with a first reference amplitude, and determining a first insertion loss value;
a first adjustment signal is generated based on the first insertion loss value, and an attenuation value of the first common attenuation module is adjusted to a first value based on the first adjustment signal.
Optionally, the extracting a second synchronization signal from the combined communication signal, and checking whether an attenuation value of a first common attenuation module satisfies a preset condition based on the second synchronization signal includes:
coupling the combined communication signal to obtain a second candidate signal, and filtering the second candidate signal to obtain the second synchronous signal;
detecting the amplitude of the second synchronous signal, and judging whether the amplitude of the second synchronous signal is within a preset amplitude range;
and if the amplitude of the second synchronous signal is within a preset amplitude range, the attenuation value of the first common attenuation module meets a preset condition.
Optionally, the adjusting, on the condition that the attenuation value of the first common attenuation module satisfies a preset condition, the attenuation value of a second common attenuation module based on the second synchronization signal includes
Comparing the amplitude of the second synchronous signal with a second reference amplitude to determine a second insertion loss value under the condition that the attenuation value of the first common attenuation module meets a preset condition;
generating a second adjustment signal based on the second insertion loss value, and adjusting the attenuation value of the second common attenuation module to a second value based on the second adjustment signal.
Optionally, the method for gain adaptation of a multi-frequency system further includes:
demodulating the first synchronous signal and the second synchronous signal to obtain a switch envelope signal;
shaping the switch envelope signal and outputting a switch switching control signal;
and after the switch control signal is output, opening a communication link switch.
Optionally, the method for gain adaptation of a multi-frequency system further includes:
extracting a multi-frequency communication signal from the combined communication signal;
frequency band division is carried out on the multi-frequency communication signals to enter corresponding branch links;
in the branch link, detecting the amplitude of each frequency band signal to generate a branch regulation signal;
adjusting a branch link gain based on the branch adjustment signal.
The disclosed embodiment provides another multi-frequency system gain self-adapting method, which is applied to an extension unit and comprises the following steps:
generating a first synchronous signal and a second synchronous signal and carrying out Frequency-shift keying (FSK) modulation;
and the modulated first synchronous signal, the modulated second synchronous signal and the modulated multi-frequency communication signal form a combined communication signal, the combined communication signal is sent to a remote unit through a feeder line, so that the remote unit extracts the first synchronous signal from the combined communication signal, the attenuation value of a first public attenuation module is adjusted based on the first synchronous signal, the second synchronous signal is extracted from the combined communication signal, whether the attenuation value of the first public attenuation module meets a preset condition or not is checked based on the second synchronous signal, and the attenuation value of a second public attenuation module is adjusted based on the second synchronous signal under the condition that the attenuation value of the first public attenuation module meets the preset condition.
The disclosed embodiment provides a multi-frequency system gain self-adapting device, which comprises:
the receiving module is used for receiving the combined communication signal sent by the extension unit;
the extraction adjusting module is used for extracting a first synchronous signal from the combined communication signal and adjusting the attenuation value of the first common attenuation module based on the first synchronous signal;
the extraction checking module is used for extracting a second synchronous signal from the combined communication signal and checking whether the attenuation value of the first public attenuation module meets a preset condition or not based on the second synchronous signal;
and the adjusting module is used for adjusting the attenuation value of a second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets a preset condition.
The disclosed embodiment provides another multi-frequency system gain adaptive device, which includes:
the generating and modulating module is used for generating a first synchronous signal and a second synchronous signal and carrying out frequency shift keying FSK modulation;
and a transmitting module, configured to transmit a combined communication signal composed of the modulated first synchronization signal, the modulated second synchronization signal, and the modulated multi-frequency communication signal to a remote unit through a feeder line, so that the remote unit extracts the first synchronization signal from the combined communication signal, adjusts an attenuation value of a first common attenuation module based on the first synchronization signal, extracts the second synchronization signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module satisfies a preset condition based on the second synchronization signal, and adjusts the attenuation value of a second common attenuation module based on the second synchronization signal when the attenuation value of the first common attenuation module satisfies the preset condition.
An embodiment of the present disclosure further provides an electronic device, which includes: a processor; a memory for storing the processor-executable instructions; the processor is configured to read the executable instructions from the memory and execute the instructions to implement the multi-frequency system gain adaptation method according to the embodiment of the disclosure.
The embodiments of the present disclosure also provide a computer-readable storage medium, which stores a computer program for executing the multi-frequency system gain adaptive method provided by the embodiments of the present disclosure.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the remote unit receives the combined communication signal sent by the expansion unit, extracts a first synchronous signal from the combined communication signal, adjusts the attenuation value of the first public attenuation module based on the first synchronous signal, extracts a second synchronous signal from the combined communication signal, checks whether the attenuation value of the first public attenuation module meets a preset condition based on the second synchronous signal, and adjusts the attenuation value of the second public attenuation module based on the second synchronous signal under the condition that the attenuation value of the first public attenuation module meets the preset condition. Therefore, the existing synchronous signals are used for gain adjustment operation, the system response time is greatly shortened, the link gain adjustment is automatically and quickly completed, and the system link stability is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a multi-frequency system gain adaptive system according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a multi-frequency system gain adaptation method according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart of another method for gain adaptation in a multi-frequency system according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of another multi-frequency system gain adaptation method according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of another multi-frequency system gain adaptive method according to an embodiment of the disclosure;
fig. 6 is a schematic flowchart of a multi-frequency system gain adaptive method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a multi-frequency system gain adaptive apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of another multi-frequency system gain adaptive apparatus according to an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The multi-frequency system gain adaptive method provided by the application can be applied to the application environment shown in fig. 1. The multi-frequency system gain self-adaptive method is applied to a multi-frequency system gain self-adaptive system. The multi-frequency system gain adaptation system includes a remote unit 100 and a spreading unit 200. Wherein, analog feeder transmission is adopted between the remote unit 100 and the extension unit 200. The expansion unit 200 generates a first synchronization signal and a second synchronization signal, performs frequency shift keying FSK modulation on the first synchronization signal and the second synchronization signal, then forms a combined communication signal with the multi-frequency communication signal, and sends the combined communication signal to the remote unit 100 through a feeder line, the remote unit 100 extracts the first synchronization signal from the combined communication signal, adjusts the attenuation value of the first common attenuation module based on the first synchronization signal, extracts the second synchronization signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module meets a preset condition based on the second synchronization signal, and adjusts the attenuation value of the second common attenuation module based on the second synchronization signal under the condition that the attenuation value of the first common attenuation module meets the preset condition.
Therefore, the existing synchronous signals are used for gain adjustment operation, the system response time is greatly shortened, the link gain adjustment is automatically and quickly completed, and the system link stability is improved.
In one embodiment, as shown in fig. 2, a multi-frequency system gain adaptation method is provided. This embodiment is illustrated primarily by the method applied to the remote unit 100 in fig. 1.
Step 101, receiving the combined communication signal sent by the extension unit.
The combined communication signal may include, but is not limited to, a plurality of synchronization signals, a multi-frequency communication signal, and the like.
And 102, extracting a first synchronous signal from the combined communication signal, and adjusting the attenuation value of the first common attenuation module based on the first synchronous signal.
In the embodiment of the present disclosure, the gain adjustment operation is performed by using the existing synchronization signal, and therefore, it is necessary to extract the first synchronization signal from the combined communication signal, where the first synchronization signal is originally used for performing the signal synchronization process.
In some embodiments, the multipath communication signal is coupled to obtain a first candidate signal, and the first candidate signal is filtered to obtain a first synchronization signal; in other embodiments, the first synchronization signal is extracted from the combined communication signal directly based on the synchronization signal identification, or the like. The above is merely an example, and the embodiment of the present disclosure does not limit the manner of extracting the first synchronization signal from the combined communication signal.
In some embodiments, the amplitude of the first synchronization signal is detected, the amplitude of the first synchronization signal is compared with a first reference amplitude, a first insertion loss value is determined, a first adjustment signal is generated based on the first insertion loss value, and the attenuation value of the first common attenuation module is adjusted to a first value based on the first adjustment signal. The first reference amplitude may be selected according to application requirements, for example, a difference between the amplitude of the first synchronization signal and the first reference amplitude is obtained as a first insertion loss value, and the first adjustment signal is generated based on the first insertion loss value. Wherein, the first value can be set according to application requirements.
And 103, extracting a second synchronous signal from the combined communication signal, and checking whether the attenuation value of the first common attenuation module meets a preset condition or not based on the second synchronous signal.
And 104, under the condition that the attenuation value of the first common attenuation module meets a preset condition, adjusting the attenuation value of the second common attenuation module based on the second synchronous signal.
In the embodiment of the present disclosure, after the first gain adjustment is performed, in order to further improve the accuracy of the gain adjustment, an existing synchronization signal is further used to perform a gain adjustment operation, so that a second synchronization signal originally used for signal synchronization processing needs to be extracted from the combined communication signal.
In some embodiments, the multipath communication signal is coupled to obtain a second candidate signal, and the first candidate signal is filtered to obtain a second synchronization signal; in other embodiments, the second synchronization signal is extracted from the combined communication signal directly according to the synchronization signal identification or the like. The above is merely an example, and the embodiment of the present disclosure does not limit the manner of extracting the second synchronization signal from the combined communication signal.
In the embodiment of the present disclosure, after the second synchronization signal is extracted, it is further checked whether the attenuation value of the first common attenuation module meets the preset condition based on the second synchronization signal, in some specific embodiments, the amplitude of the second synchronization signal is detected, and it is determined whether the amplitude of the second synchronization signal is within a preset amplitude range, and if the amplitude of the second synchronization signal is within the preset amplitude range, the attenuation value of the first common attenuation module meets the preset condition. The preset amplitude range can be set according to application needs.
In the embodiments of the present disclosure, in a case where the attenuation value of the first common attenuation block satisfies the preset condition, the attenuation value of the second common attenuation block is adjusted based on the second synchronization signal, and in some specific embodiments, the amplitude of the second synchronization signal is compared with a second reference amplitude, a second insertion loss value is determined, a second adjustment signal is generated based on the second insertion loss value, and the attenuation value of the second common attenuation block is adjusted to a second value based on the second adjustment signal. The second reference amplitude may be selected according to application requirements, for example, a difference between the amplitude of the second synchronization signal and the second reference amplitude is obtained as a second insertion loss value, and the second adjustment signal is generated based on the second insertion loss value. Wherein the second value can be set according to application requirements.
Specifically, as shown in fig. 3:
step a, receiving a combined communication signal sent by an extension end unit through a feeder line.
And b, extracting the first synchronous signal and the second synchronous signal from the combined communication signal.
And c, detecting the amplitude of the first synchronous signal.
And d, generating a first adjusting signal according to the amplitude of the first synchronous signal to adjust the gain of the public link.
And e, detecting the amplitude of the second synchronous signal.
And f, judging whether the first regulating signal is normal or not according to the amplitude of the second synchronous signal.
And g, if the first adjusting signal is normal, generating a second adjusting signal to adjust the gain of the public link.
Specifically, after the remote unit is powered on, a first synchronization signal and a second synchronization signal are extracted through coupling and filtering, the amplitude of the first synchronization signal is detected, whether the amplitude of the first synchronization signal exceeds a threshold value or not is judged, if not, abnormal feeder line connection is judged, and alarm information is returned; and if so, generating a first adjusting signal, adjusting the attenuation value of the first public attenuation module, and adjusting the gain of the public link for the first time. And then detecting the amplitude of the second synchronous signal, judging whether the amplitude of the second synchronous signal is in a preset range, if so, generating a second adjusting signal, adjusting the attenuation value of a second common attenuation module, adjusting the gain of the common link for the second time, and setting the common link gain adjustment completion flag position to be a high level, thereby realizing automatic and rapid completion of link gain adjustment and ensuring that the stability of a system link is improved.
In some embodiments, as shown in fig. 4, the method further includes, on the basis of fig. 2:
step 201, demodulating the first synchronization signal and the second synchronization signal to obtain a switch envelope signal.
Step 202, shaping the switch envelope signal, and outputting a switch switching control signal.
And step 203, after the switch control signal is output, opening the communication link switch.
In the embodiment of the present disclosure, the first synchronization signal and the second synchronization signal are modulation signals, which are received and extracted by the remote unit and then demodulated, a switch envelope signal is output, the switch envelope signal is further shaped, a switch switching control signal is output, and after the switch control signal is output, the communication link switch is turned on.
Specifically, as shown in fig. 3, the method includes:
and h, demodulating the first synchronous signal and the second synchronous signal to generate a switch envelope signal.
And i, shaping the switch envelope signal and outputting a switch switching control signal.
And j, judging whether the gain adjustment of the public link is finished or not.
And step k, if yes, opening a communication link switch.
Specifically, the first synchronous signal and the second synchronous signal are FSK modulation signals, the FSK modulation signals are input into an FSK demodulation module for demodulation after being received and extracted by a remote unit, switch envelope signals are output, switch switching control signals are output through time delay adjustment, the FSK demodulation module comprises an uplink switching signal and a downlink switching signal, the uplink switching signal and the downlink switching signal are respectively used for controlling an uplink radio frequency link and a downlink radio frequency link, whether a public link gain adjustment zone bit is 1 or not is detected, whether public link gain is completed or not is judged, if yes, a communication link switch is opened, multi-frequency communication signals enter a communication link, the switch module is kept in a closed state before the control, loss of communication link devices caused by overhigh power of the multi-frequency communication signals and asynchronous uplink and downlink switching is avoided, and system reliability is effectively guaranteed.
Therefore, after the gain adjustment and the switching synchronization are completed, the communication link switch is turned on, link abnormity such as device damage caused by overlarge signals input to the communication link is avoided, and the reliability and the stability of the system are effectively ensured.
In some embodiments, as shown in fig. 5, the method further includes, on the basis of fig. 2:
step 301, extracting a multi-frequency communication signal from the combined communication signal.
Step 302, frequency band division is performed on the multi-frequency communication signals to enter corresponding branch links.
Step 303, in the branch link, detecting the amplitude of the signal in each frequency band, and generating a branch regulation signal.
The branch link gain is adjusted based on the branch adjust signal, step 304.
In the embodiment of the disclosure, after the communication link switch is turned on, the combined communication signal enters the communication link, first, the first synchronization signal and the second synchronization signal are filtered, the multi-frequency communication signal is extracted, then, the multi-frequency communication signal is frequency-selected by using the multiplexing filter module and is input into the corresponding branch link, the communication signal amplitude is detected in the branch link to generate a branch adjusting signal, the attenuation value of the branch link attenuation module is finely adjusted, and the differential adjustment of the signal transmission link gain of each frequency band is completed.
In addition, the communication signal may be output after being filtered, controlled, amplified, and the like according to actual requirements, and the embodiment of the present application is not particularly limited.
Therefore, the remote unit completes link gain adjustment by using the synchronous signal, generates a first adjusting signal by receiving the first synchronous signal sent by the expansion unit, completes first public link gain adjustment, receives a second synchronous signal sent by the expansion unit, judges whether the first adjusting signal is normal or not and completes second public link gain adjustment, and the step is controlled by an independent module, is not interfered by control and signals of other modules, and improves link insertion loss adjustment accuracy. Therefore, the first synchronous signal and the second synchronous signal are demodulated to generate a switch switching control signal, and uplink and downlink switching synchronization is realized. Compared with the prior art, the frequency demodulation of the synchronous signal is utilized, and the frequency demodulation is independent of the power of the synchronous signal, so that the response time of the system is greatly shortened. After the gain adjustment and the switching synchronization are completed, the communication link switch is turned on, so that link abnormity such as device damage caused by overlarge signals input into the communication link is avoided, and the reliability and the stability of the system are effectively ensured. Through multiplex filtering, the communication signals of all working frequency bands are shunted, the signal amplitude is detected in each branch, and the branch where the communication signals are located is subjected to gain fine adjustment, so that the problem that link gain is inaccurate due to insertion loss differences of different frequencies of a feeder line is effectively solved. The feeder insertion loss detection and switching synchronization and the different frequency band link gain compensation function are realized, the speed is high, the precision is high, and the cost is low.
In one embodiment, as shown in fig. 6, a multi-frequency system gain adaptation method is provided. This embodiment is mainly illustrated by applying the method to the expansion unit 200 in fig. 1.
Step 401, generating a first synchronization signal and a second synchronization signal and performing frequency shift keying FSK modulation.
Step 402, a combined communication signal formed by the modulated first synchronous signal, the modulated second synchronous signal and the modulated multi-frequency communication signal is sent to a remote unit through a feeder line, so that the remote unit extracts the first synchronous signal from the combined communication signal, adjusts an attenuation value of the first common attenuation module based on the first synchronous signal, extracts the second synchronous signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module meets a preset condition based on the second synchronous signal, and adjusts the attenuation value of the second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets the preset condition.
It should be noted that, the embodiments of the present disclosure are described in detail with reference to the remote unit, and are not described in detail here.
The expansion unit generates a first synchronous signal and a second synchronous signal and carries out frequency shift keying FSK modulation, a combined communication signal formed by the modulated first synchronous signal, the modulated second synchronous signal and a multi-frequency communication signal is sent to the remote unit through a feeder line, the remote unit receives the combined communication signal, extracts the first synchronous signal from the combined communication signal, adjusts the attenuation value of the first common attenuation module based on the first synchronous signal, extracts the second synchronous signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module meets a preset condition based on the second synchronous signal, and adjusts the attenuation value of the second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets the preset condition. Therefore, the existing synchronous signals are used for gain adjustment operation, the system response time is greatly shortened, the link gain adjustment is automatically and quickly completed, and the system link stability is improved.
In one embodiment, as shown in fig. 7, there is provided a multi-frequency system gain adaptive apparatus, including: a receiving module 701, an extraction adjusting module 702, an extraction checking module 703 and an adjusting module 704.
The receiving module 701 is configured to receive the combined communication signal sent by the extension unit.
An extraction adjustment module 702 is configured to extract the first synchronization signal from the combined communication signal, and adjust an attenuation value of the first common attenuation module based on the first synchronization signal.
And an extraction and verification module 703, configured to extract the second synchronization signal from the combined communication signal, and check whether the attenuation value of the first common attenuation module meets a preset condition based on the second synchronization signal.
An adjusting module 704, configured to adjust an attenuation value of the second common attenuation module based on the second synchronization signal if the attenuation value of the first common attenuation module satisfies a preset condition.
Optionally, the extraction adjusting module 702 is specifically configured to:
coupling the combined communication signal to obtain a first candidate signal, and filtering the first candidate signal to obtain the first synchronization signal;
detecting the amplitude of the first synchronous signal, comparing the amplitude of the first synchronous signal with a first reference amplitude, and determining a first insertion loss value;
a first adjustment signal is generated based on the first insertion loss value, and an attenuation value of the first common attenuation module is adjusted to a first value based on the first adjustment signal.
Optionally, the extraction verification module 703 is specifically configured to:
coupling the combined communication signal to obtain a second candidate signal, and filtering the second candidate signal to obtain the second synchronous signal;
detecting the amplitude of the second synchronous signal, and judging whether the amplitude of the second synchronous signal is within a preset amplitude range;
and if the amplitude of the second synchronous signal is within a preset amplitude range, the attenuation value of the first common attenuation module meets a preset condition.
Optionally, the adjusting module 704 is specifically configured to:
comparing the amplitude of the second synchronous signal with a second reference amplitude to determine a second insertion loss value under the condition that the attenuation value of the first common attenuation module meets a preset condition;
generating a second adjustment signal based on the second insertion loss value, and adjusting the attenuation value of the second common attenuation module to a second value based on the second adjustment signal.
Optionally, the apparatus further comprises:
and the synchronous demodulation module is used for demodulating the first synchronous signal and the second synchronous signal to obtain a switch envelope signal.
And the output module is used for shaping the switch envelope signal and outputting a switch switching control signal.
And the switch module is used for opening the communication link switch after the switch control signal is output.
Optionally, the apparatus further comprises:
and the multiplexing module is used for extracting the multi-frequency communication signal from the combined communication signal.
And the branch coupling module is used for distinguishing the frequency bands of the multi-frequency communication signals and entering the corresponding branch links.
And the branch generation module is used for detecting the amplitude of the signal of each frequency band in the branch link to generate a branch regulation signal.
A branch attenuation module to adjust branch link gains based on the branch adjustment signal.
In one embodiment, as shown in fig. 8, there is provided a multi-frequency system gain adaptive apparatus, including: a modulation module 801 is generated and a transmission module 802 is constituted.
And a generating and modulating module 801, configured to generate the first synchronization signal and the second synchronization signal and perform frequency shift keying FSK modulation.
A transmitting module 802 configured to transmit the modulated first synchronization signal, the modulated second synchronization signal, and the modulated multi-frequency communication signal to a remote unit through a feeder line, so that the remote unit extracts the first synchronization signal from the combined communication signal, adjusts an attenuation value of a first common attenuation module based on the first synchronization signal, extracts the second synchronization signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module satisfies a preset condition based on the second synchronization signal, and adjusts the attenuation value of a second common attenuation module based on the second synchronization signal when the attenuation value of the first common attenuation module satisfies the preset condition.
The expansion unit generates a first synchronous signal and a second synchronous signal and carries out frequency shift keying FSK modulation, a combined communication signal formed by the modulated first synchronous signal, the modulated second synchronous signal and a multi-frequency communication signal is sent to the remote unit through a feeder line, the remote unit receives the combined communication signal, extracts the first synchronous signal from the combined communication signal, adjusts the attenuation value of the first common attenuation module based on the first synchronous signal, extracts the second synchronous signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module meets a preset condition based on the second synchronous signal, and adjusts the attenuation value of the second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets the preset condition. Therefore, the existing synchronous signals are used for gain adjustment operation, the system response time is greatly shortened, the link gain adjustment is automatically and quickly completed, and the system link stability is improved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. A multi-frequency system gain adaptation method, for use in a remote unit, comprising:
receiving a combined communication signal sent by an expansion unit;
extracting a first synchronization signal from the combined communication signal, and adjusting an attenuation value of a first common attenuation module based on the first synchronization signal;
extracting a second synchronous signal from the combined communication signal, and checking whether the attenuation value of the first common attenuation module meets a preset condition or not based on the second synchronous signal;
and adjusting the attenuation value of a second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets a preset condition.
2. The multi-frequency system gain adaptation method of claim 1, wherein the extracting a first synchronization signal from the combined communication signal, and adjusting attenuation values of a first common attenuation module based on the first synchronization signal comprises:
coupling the combined communication signal to obtain a first candidate signal, and filtering the first candidate signal to obtain the first synchronization signal;
detecting the amplitude of the first synchronous signal, comparing the amplitude of the first synchronous signal with a first reference amplitude, and determining a first insertion loss value;
a first adjustment signal is generated based on the first insertion loss value, and an attenuation value of the first common attenuation module is adjusted to a first value based on the first adjustment signal.
3. The multi-frequency system gain adaptation method of claim 1, wherein the extracting a second synchronization signal from the combined communication signal, and checking whether an attenuation value of a first common attenuation module satisfies a preset condition based on the second synchronization signal comprises:
coupling the combined communication signal to obtain a second candidate signal, and filtering the second candidate signal to obtain the second synchronous signal;
detecting the amplitude of the second synchronous signal, and judging whether the amplitude of the second synchronous signal is within a preset amplitude range;
and if the amplitude of the second synchronous signal is within a preset amplitude range, the attenuation value of the first common attenuation module meets a preset condition.
4. The multi-frequency system gain adaptation method according to claim 1, wherein the adjusting the attenuation values of the second common attenuation module based on the second synchronization signal in case that the attenuation values of the first common attenuation module satisfy a preset condition comprises
Comparing the amplitude of the second synchronous signal with a second reference amplitude to determine a second insertion loss value under the condition that the attenuation value of the first common attenuation module meets a preset condition;
generating a second adjustment signal based on the second insertion loss value, and adjusting the attenuation value of the second common attenuation module to a second value based on the second adjustment signal.
5. The multi-frequency system gain adaptation method of claim 1, further comprising:
demodulating the first synchronous signal and the second synchronous signal to obtain a switch envelope signal;
shaping the switch envelope signal and outputting a switch switching control signal;
and after the switch control signal is output, opening a communication link switch.
6. The multi-frequency system gain adaptation method of claim 1, further comprising:
extracting a multi-frequency communication signal from the combined communication signal;
frequency band division is carried out on the multi-frequency communication signals to enter corresponding branch links;
in the branch link, detecting the amplitude of each frequency band signal to generate a branch regulation signal;
adjusting a branch link gain based on the branch adjustment signal.
7. A multi-frequency system gain adaptation method, applied to an extension unit, comprising:
generating a first synchronous signal and a second synchronous signal and carrying out frequency shift keying FSK modulation;
and the modulated first synchronous signal, the modulated second synchronous signal and the modulated multi-frequency communication signal form a combined communication signal, the combined communication signal is sent to a remote unit through a feeder line, so that the remote unit extracts the first synchronous signal from the combined communication signal, the attenuation value of a first public attenuation module is adjusted based on the first synchronous signal, the second synchronous signal is extracted from the combined communication signal, whether the attenuation value of the first public attenuation module meets a preset condition or not is checked based on the second synchronous signal, and the attenuation value of a second public attenuation module is adjusted based on the second synchronous signal under the condition that the attenuation value of the first public attenuation module meets the preset condition.
8. An apparatus for gain adaptation in a multi-frequency system, comprising:
the receiving module is used for receiving the combined communication signal sent by the extension unit;
the extraction adjusting module is used for extracting a first synchronous signal from the combined communication signal and adjusting the attenuation value of the first common attenuation module based on the first synchronous signal;
the extraction checking module is used for extracting a second synchronous signal from the combined communication signal and checking whether the attenuation value of the first public attenuation module meets a preset condition or not based on the second synchronous signal;
and the adjusting module is used for adjusting the attenuation value of a second common attenuation module based on the second synchronous signal under the condition that the attenuation value of the first common attenuation module meets a preset condition.
9. An apparatus for gain adaptation in a multi-frequency system, comprising:
the generating and modulating module is used for generating a first synchronous signal and a second synchronous signal and carrying out frequency shift keying FSK modulation;
and a transmitting module, configured to transmit a combined communication signal composed of the modulated first synchronization signal, the modulated second synchronization signal, and the modulated multi-frequency communication signal to a remote unit through a feeder line, so that the remote unit extracts the first synchronization signal from the combined communication signal, adjusts an attenuation value of a first common attenuation module based on the first synchronization signal, extracts the second synchronization signal from the combined communication signal, checks whether the attenuation value of the first common attenuation module satisfies a preset condition based on the second synchronization signal, and adjusts the attenuation value of a second common attenuation module based on the second synchronization signal when the attenuation value of the first common attenuation module satisfies the preset condition.
10. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory for storing the processor-executable instructions;
the processor configured to read the executable instructions from the memory and execute the instructions to implement the multi-frequency system gain adaptation method of any of claims 1-7.
11. A computer-readable storage medium, wherein the storage medium stores a computer program for executing the multi-frequency system gain adaptation method according to any one of claims 1 to 7.
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