CN111212436B - Gain calibration method, device, computer equipment and storage medium - Google Patents
Gain calibration method, device, computer equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application relates to a gain calibration method, a gain calibration device, a computer device and a storage medium, wherein the calibration device controls a frequency source inside a device to be tested to output a first point frequency signal with preset power according to the working frequency range of a channel to be tested in the device to be tested; then, detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal; finally, adjusting a gain calibration adjustment value of the channel to be tested according to the output power until the output power value is within a preset power range; by adopting the method, the calibration accuracy can be improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a gain calibration method, apparatus, computer device, and storage medium.
Background
The remote radio unit (Remote Radio Unit, simply called RRU unit) is an important component of the wireless communication base station, and mainly realizes that the baseband signal is sent to the terminal equipment after being subjected to frequency conversion amplification, and the radio signal sent by the terminal equipment is received, processed, converted and transmitted to the baseband equipment. Before the RRU unit leaves the factory, the gain of the RRU unit needs to be calibrated first so that the gain of the RRU unit is within a preset range.
In the prior art, a calibration system of an RRU unit comprises a baseband unit and power detection equipment, wherein a baseband signal is mainly sent to the RRU unit through the baseband unit, then the power of a radio frequency signal output by the RRU unit is detected through the power detection equipment, the forward gain of the RRU unit is obtained, and the forward gain is adjusted to be within a preset range by adjusting the attenuation amount of an attenuator in the RRU unit, so that gain calibration is completed.
However, by adopting the method, the calibration system of the RRU unit is complex, and particularly when the RRU unit comprises channels with different communication systems, the calibration system needs to comprise a plurality of baseband units with different communication systems, so that the system introduces larger errors and influences the calibration accuracy.
Disclosure of Invention
Based on the foregoing, it is necessary to provide a gain calibration method, apparatus, computer device and storage medium for solving the above technical problems.
A method of gain scaling, said method comprising:
according to the working frequency range of a channel to be tested in the device to be tested, controlling a frequency source inside the device to be tested to output a first point frequency signal with preset power;
detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal;
and adjusting the gain calibration adjustment value of the channel to be tested according to the output power value until the output power value is within a preset power range.
In one embodiment, the controlling the frequency source inside the device to be tested to output the first point frequency signal of the preset power according to the working frequency band of the channel to be tested in the device to be tested includes:
after a calibration instruction corresponding to the channel to be tested is obtained, controlling the channel to be tested to be opened;
and controlling the frequency source to output a first point frequency signal of preset power corresponding to the working frequency band of the channel to be tested.
In one embodiment, the scaling instruction is determined by a timing scaling signal.
In one embodiment, the detecting, by the power detecting device, the output power value of the second dot frequency signal includes:
reading the output power value of the second point frequency signal when the timing scaling signal indicates the scaling of the channel to be tested; the second point frequency signal enters power detection equipment through a multichannel coupling attenuator; the input ends of the multi-channel coupling attenuators are respectively connected with a plurality of channels to be tested.
In one embodiment, the gain scaling adjustment value is used to adjust a first attenuation value of an analog attenuator in a channel under test; adjusting a gain scaling adjustment value for a channel under test, comprising:
adjusting the gain scaling adjustment value according to a preset first step;
or alternatively, the first and second heat exchangers may be,
and selecting a first adjustment amount corresponding to the first difference value according to the first difference value between the output power value and the preset output power value in the power range, and adjusting the gain calibration adjustment value according to the first adjustment amount.
In one embodiment, the method further comprises:
acquiring a feedback power value obtained by a feedback power acquisition unit in the equipment to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the equipment to be tested;
and adjusting a feedback gain calibration adjustment value of the device to be tested according to the feedback power value until a second difference value between the feedback power value and the output power value is within a preset difference value range.
In one embodiment, the feedback gain scaling adjustment value is used to adjust a second attenuation value of the analog attenuator in the feedback path; adjusting a feedback gain scaling adjustment value for a device under test, comprising:
adjusting the feedback gain scaling adjustment value according to a preset second step;
or alternatively, the first and second heat exchangers may be,
and selecting a corresponding second adjustment amount according to the second difference value, and adjusting a feedback gain scaling adjustment value according to the second adjustment amount.
A gain scaling device, said device comprising:
the control module is used for controlling a frequency source in the equipment to be tested to output a first point frequency signal with preset power according to the working frequency range of the channel to be tested in the equipment to be tested;
the detection module is used for detecting and obtaining the output power value of the second point frequency signal through the power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal;
the adjusting module is used for adjusting the gain calibration adjusting value of the channel to be tested according to the output power value until the output power value is within a preset power range.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the gain scaling method when the processor executes the computer program.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the gain scaling method described above.
According to the gain calibration method, the gain calibration device, the computer equipment and the storage medium, the calibration equipment controls a frequency source inside the equipment to be tested to output a first point frequency signal with preset power according to the working frequency band of the channel to be tested in the equipment to be tested; then, detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal; finally, adjusting the gain calibration adjustment value of the channel according to the output power until the output power value is within a preset power range. Because the calibration equipment controls the frequency source inside the equipment to be tested to output the first point frequency signal, no external equipment is required to provide test signals when the equipment to be tested is calibrated, the introduction error of the calibration system is reduced, and the calibration accuracy is improved.
Drawings
FIG. 1 is a diagram of an application environment for a gain scaling method in one embodiment;
FIG. 2 is a flow diagram of a gain scaling method in one embodiment;
FIG. 3 is a flow chart of a gain scaling method according to another embodiment;
FIG. 4 is a schematic diagram of a scaling system in one embodiment;
FIG. 5 is a flow chart of a gain scaling method according to another embodiment;
FIG. 5A is a block diagram of a device under test in one embodiment;
FIG. 6 is a block diagram of a gain scaling device in one embodiment;
fig. 7 is a block diagram of a gain scaling device according to another embodiment;
fig. 8 is a block diagram of a gain scaling device according to another embodiment;
fig. 9 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The gain calibration method provided by the application can be applied to an application environment shown in figure 1. The calibration device 100 is connected to the device under test 200 and the power detection device 300, where the calibration device 100 may be, but not limited to, various personal computers, notebook computers, tablet computers, etc., and the device under test 200 may be a remote radio unit (Remote Radio Unit, simply referred to as RRU unit) in a wireless communication base station, a radio unit in a macro base station and a micro base station, or a radio unit in other communication systems, which is not limited herein. The power detection apparatus 300 may be, but is not limited to, a power meter, a spectrometer, or the like.
In one embodiment, as shown in fig. 2, there is provided a gain scaling method, which is exemplified by the scaling apparatus applied in fig. 1, including:
s101, controlling a frequency source inside the device to be tested to output a first point frequency signal with preset power according to the working frequency range of a channel to be tested in the device to be tested.
The device to be tested 200 may be a remote radio unit (Remote Radio Unit, simply referred to as RRU unit) in a wireless communication base station, a radio unit in a macro base station and a micro base station, or a radio unit in other communication systems, which is not limited herein.
The channels in the device to be tested can comprise an up-conversion channel, a down-conversion channel and a radio frequency amplification channel, and also can be a low-noise amplification channel; the radio frequency channel or the microwave channel can be used, and the method is not limited herein.
The device to be tested can comprise one channel to be tested and also can comprise a plurality of channels to be tested; the channels to be tested can support the same communication system, and can also support different systems, and are not limited herein.
The frequency source refers to a basic signal source in the device to be tested, and the frequency source may be a fixed-point frequency source or a synthesized frequency source, which is not limited herein. The fixed frequency source may be a source composed of a crystal oscillator and a frequency multiplier, and configured to output a fixed frequency point signal; the synthesis frequency source can realize frequency synthesis by a frequency multiplier, a frequency divider, a frequency mixer and a microwave switch and output signals with adjustable frequency; or a frequency synthesizer based on phase-locked loop technology; the type of the frequency source is not limited herein.
Specifically, the scaling device may determine the frequency of the first point frequency signal according to the working frequency band of the channel to be measured, may determine the first point frequency according to the center frequency point of the working frequency band, or may determine the first point frequency according to other frequency points in the working frequency band, which is not limited herein.
For example, the scaling device may store a correspondence between the channel to be measured and the point frequency, and when the scaling device scales the channel to be measured, the scaling device may select a corresponding first point frequency point in the correspondence according to the identifier or the working frequency band of the channel to be measured. For example, the working frequency band of the channel to be measured may be 2300MHz to 2400MHz, and in the corresponding relationship, the frequency point corresponding to the frequency band may be 2350MHz or 2310MHz.
The preset power may be determined according to the output capability of the frequency source, or may be determined according to the gain range of the device to be tested, and then an attenuator in the frequency source circuit is adjusted, so that the frequency source outputs a fixed power value.
After determining the frequency and the output power of the first point frequency signal, the scaling device may send an enable signal to the device to be tested, and control the enable pin of the frequency source device, so that the frequency source outputs the first point frequency signal, or may switch the control switch of the frequency source through the control signal, where the control mode is not limited herein.
S102, detecting and obtaining an output power value of a second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal.
The power detection device may be a spectrometer, a power meter, or a device for detecting power customized in a calibration system, and the type of the power detection device is not limited herein.
The second point frequency signal is obtained after the channel to be measured converts the first point frequency signal, and the conversion may be amplification or frequency conversion, which is not limited herein. For example, the channel to be tested includes an up-conversion channel and an amplification channel, when the frequency source outputs a first point frequency signal, the signal is converted to a second point frequency point, and the signal is amplified to obtain a second point frequency signal; if the channel to be tested only amplifies the signal, the frequency of the first point frequency signal is the same as the frequency of the second point frequency signal.
Specifically, the scaling device may obtain the above-mentioned output power value by being connected to the power detecting device, after the power detecting device detects the detection result of the second dot frequency signal.
The detection result may be an output power value of the second dot frequency signal obtained after the power detection device is calibrated, so that the calibration device may directly read the output power value; in addition, the detection result may be a power value of the output power of the second dot frequency signal after passing through the attenuator, and the calibration device calculates the output power value according to the attenuation amounts of the attenuator and the connection cable after reading the power value; the manner of obtaining the output power value is not limited herein.
Specifically, the scaling device may read the output power value once, or may read the output power value multiple times within a preset period of time, and then obtain an average value of the output power values.
S103, adjusting a gain calibration adjustment value of the channel to be tested according to the output power value until the output power value is within a preset power range.
The scaling device may determine a power range of the output power value corresponding to the channel to be measured according to a scaling target of the channel to be measured, for example, the scaling target of the channel to be measured is that the gain is 48dB to 58dB, and when the power of the first point frequency signal is-50 dBm, the power range may be set to be-2 dBm to 2dBm.
The scaling device may adjust the gain scaling adjustment value of the channel to be measured so that the output power value is within a preset power range. Specifically, the scaling device may adjust the gain scaling adjustment value by modifying the attenuation amount in the digital domain, or may adjust the attenuation amount of the attenuator in the analog domain, such as a radio frequency attenuator or an intermediate frequency attenuator, and the adjustment manner is not limited herein.
Optionally, the gain scaling adjustment value is used to adjust a first attenuation value of an analog attenuator in the channel under test; the calibration device can adjust the gain calibration adjustment value according to a preset first step when adjusting the gain calibration adjustment value of the channel to be measured; alternatively, a first adjustment amount corresponding to the first difference may be selected according to the first difference between the output power value and the preset output power value in the power range, and the gain scaling adjustment value may be adjusted according to the first adjustment amount.
Further, the scaling device may write the value of the gain scaling adjustment value into the device under test after performing the adjustment once; the values of the gain scaling adjustment values may also be written to the device under test after scaling is completed.
According to the gain calibration method, the calibration equipment controls the frequency source inside the equipment to be tested to output a first point frequency signal with preset power according to the working frequency band of the channel to be tested in the equipment to be tested; then, detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal; and finally, adjusting a gain calibration adjustment value of the channel to be tested according to the output power until the output power value is within a preset power range. Because the calibration equipment controls the frequency source inside the equipment to be tested to output the first point frequency signal, no external equipment is required to provide test signals when the equipment to be tested is calibrated, the introduction error of the calibration system is reduced, and the calibration accuracy is improved.
Fig. 3 is a schematic flow chart of a gain scaling method in an embodiment, which relates to a manner in which a computer device outputs a first point frequency signal, on the basis of the above embodiment, as shown in fig. 3, the above S101 includes:
s201, after a calibration instruction corresponding to the channel to be tested is obtained, controlling the channel to be tested to be opened.
The scaling device may determine when to scale the channel to be measured based on the scaling instructions. The calibration instruction may include the identifier of the channel to be measured, or may include information such as the working frequency band of the channel to be measured, which is not limited herein.
The scaling instruction may be an instruction input by a user, for example, the scaling instruction is input by the user through an interface of scaling control software by clicking a control or inputting a code.
Alternatively, the scaling instruction may be determined by a timing scaling signal, e.g., the characterization may begin scaling the channel under test when the timing scaling signal is high; when the channel to be measured comprises a plurality of channels to be measured, the timing calibration signal can enable the calibration equipment to calibrate the channels to be measured in sequence; for example, the scaling device may determine the number of channels of the corresponding channel to be measured by means of the scaling signal, for example by means of the scaling signal reading channel 010, and may scale the second channel.
After the channel to be measured is determined, the calibration equipment can control the channel to be measured to be opened; specifically, the power enable signal of the channel to be tested may be controlled, and the control enable signal of the channel to be tested may be also controlled, for example, the power switch corresponding to the channel to be tested is controlled to be turned on, or the device in the channel to be tested is controlled to be in a working state.
S202, controlling a frequency source to output a first point frequency signal with preset power corresponding to the working frequency band of the channel to be tested.
After the channel to be measured is opened, the calibration device can control the frequency source to output a first point frequency signal with preset power corresponding to the working frequency band of the channel to be measured.
According to the gain calibration mode, the calibration equipment can control the opening of the channel to be tested through the calibration instruction, so that the manual operation can be further reduced in the calibration process, and the calibration efficiency is improved.
In one embodiment, the device to be tested may include a plurality of channels to be tested, and the scaling device may read the output power value of the second dot frequency signal when the timing scaling signal indicates scaling of the channels to be tested; the second point frequency signal enters power detection equipment through a multichannel coupling attenuator; the input ends of the multi-channel coupling attenuators are respectively connected with a plurality of channels to be tested.
As shown in fig. 4, in the figure, 4 channels of the device to be tested are connected with 4 input ports of the multi-channel coupling attenuator through cables, the output ports of the multi-channel coupling attenuator are connected with the power detection device, and the calibration device is respectively connected with the device to be tested and the power detection device. When the timing scaling signal indicates to scale the first channel, the scaling device may obtain the output power value of the first channel through the power detection device, and then complete the scaling of the first channel.
According to the gain calibration method, under the control of the timing calibration signal, the calibration equipment can directly read the output power value in the calibration time slot corresponding to the current channel to be tested, so that the channel to be tested is corresponding to the output power value, and the error of the calibration result is avoided; furthermore, as the second point frequency signal enters the power detection equipment through the multichannel coupling attenuator, the calibration can be completed without switching between the power detection equipment and the channel to be detected, the calibration efficiency is improved, and meanwhile, the calibration error caused by repeated connection is avoided.
Fig. 5 is a schematic flow chart of a gain calibration method in another embodiment, where the embodiment relates to a mode of completing feedback gain calibration by a calibration device, and on the basis of the above embodiment, as shown in fig. 5, the method further includes:
s301, acquiring a feedback power value obtained by a feedback power acquisition unit in equipment to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the device to be tested.
When the device to be tested comprises a forward channel and a feedback channel, the calibration device can also complete the calibration of the feedback channel after the calibration of the forward channel is completed.
The feedback channel can be coupled with the output power of the forward channel through the coupler, then the coupled signal is amplified or attenuated, and the output power of the feedback channel is detected through the feedback power acquisition unit, for example, the signal of the feedback channel is converted into an analog signal through the power detection chip, the device to be tested can calculate the feedback power value through the voltage value of the analog signal, and the feedback power value is sent to the calibration device.
The feedback channel can be used for detecting output power of the device to be detected, and can also be used for providing input reference for the digital predistortion unit, and is not limited herein.
S302, adjusting a feedback gain calibration adjustment value of the device to be tested according to the feedback power value until a second difference value between the feedback power value and the output power value is within a preset difference value range.
After the feedback power value is obtained, the scaling device may adjust the feedback gain scaling adjustment value in the feedback channel according to the feedback power value until the second difference between the feedback power value and the output power value is within a preset difference range. The second difference is the gain value of the feedback channel.
Specifically, the feedback gain scaling adjustment value is used to adjust a second attenuation value of the analog attenuator in the feedback channel; when the calibration device adjusts the feedback gain calibration adjustment value of the device to be tested, the feedback gain calibration adjustment value can be adjusted according to a preset second step; or selecting a corresponding second adjustment amount according to the second difference value, and adjusting the feedback gain scaling adjustment value according to the second adjustment amount.
As shown in fig. 5A, the device to be tested includes a forward channel and a feedback channel, the forward channel is connected with a frequency source, amplifies a first point frequency signal, and inputs the amplified first point frequency signal to a power detection device; after the feedback channel couples signals through the coupler, the signals are amplified, and then feedback power values are obtained through the feedback power acquisition unit. The scaling device can adjust a first attenuation value of the analog attenuator in the forward channel to finish gain scaling of the forward channel; in addition, the second attenuation value of the analog attenuator in the feedback channel can be adjusted to complete the gain calibration of the feedback channel.
According to the gain calibration method, the calibration equipment completes the gain calibration of the forward channel and the gain calibration of the feedback channel of the equipment to be tested through one-time connection, so that the calibration efficiency can be improved; furthermore, the scaling device scales the gain of the feedback channel, so that the digital predistortion unit can adjust the linearity of the power amplifier according to the feedback signal with proper power, thereby being beneficial to improving the linearity and efficiency of the power amplifier and further reducing the energy consumption of the device in use.
It should be understood that, although the steps in the flowcharts of fig. 2-5 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 2-5 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or steps.
In one embodiment, as shown in fig. 6, there is provided a gain scaling apparatus comprising: a control module 10, a detection module 20 and a first adjustment module 30, wherein:
the control module 10 is used for controlling a frequency source inside the device to be tested to output a first point frequency signal of preset power according to the working frequency band of a channel to be tested in the device to be tested;
a detection module 20, configured to detect and obtain an output power value of the second point frequency signal through a power detection device; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal;
the first adjusting module 30 is configured to adjust the gain calibration adjustment value of the channel to be measured according to the output power value until the output power value is within a preset power range.
The gain calibration device provided by the embodiment of the application can realize the method embodiment, and the implementation principle and the technical effect are similar, and are not repeated here.
In one embodiment, as shown in fig. 7, the control module 10 includes:
the control unit 101 is configured to control the opening of the channel to be tested after obtaining a scaling instruction corresponding to the channel to be tested;
and the output unit 102 is used for controlling the frequency source to output a first point frequency signal with preset power corresponding to the working frequency band of the channel to be tested.
In an embodiment, the scaling instructions are determined by timing scaling signals on the basis of the above embodiments.
In one embodiment, based on the above embodiment, the detection module 20 is specifically configured to: reading the output power value of the second point frequency signal when the timing scaling signal indicates the scaling of the channel to be tested; the second point frequency signal enters power detection equipment through a multichannel coupling attenuator; the input ends of the multi-channel coupling attenuators are respectively connected with a plurality of channels to be tested.
In one embodiment, the gain scaling adjustment value is used to adjust the first attenuation value of the analog attenuator in the channel under test based on the above embodiments; the first adjustment module 30 is specifically configured to: adjusting the gain scaling adjustment value according to a preset first step; or selecting a first adjustment amount corresponding to the first difference value according to the first difference value between the output power value and the preset output power value in the power range, and adjusting the gain scaling adjustment value according to the first adjustment amount.
In one embodiment, as shown in fig. 8, on the basis of the above embodiment, the apparatus further includes:
an obtaining module 40, configured to obtain a feedback power value obtained by a feedback power collecting unit in the device to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the equipment to be tested;
the second adjusting module 50 is configured to adjust the feedback gain calibration adjustment value of the device under test according to the feedback power value until the second difference between the feedback power value and the output power value is within a preset difference range.
In one embodiment, the feedback gain scaling adjustment value is used to adjust the second attenuation value of the analog attenuator in the feedback path, and the second adjusting module 50 is specifically configured to: adjusting the feedback gain scaling adjustment value according to a preset second step; or selecting a corresponding second adjustment amount according to the second difference value, and adjusting the feedback gain scaling adjustment value according to the second adjustment amount.
The gain calibration device provided by the embodiment of the application can realize the method embodiment, and the implementation principle and the technical effect are similar, and are not repeated here.
For specific limitations of the gain scaling means, reference is made to the above limitations of the gain scaling method, and no further description is given here. The various modules in the gain scaling means described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 9. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is for storing gain scaling data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a gain scaling method.
It will be appreciated by persons skilled in the art that the architecture shown in fig. 9 is merely a block diagram of some of the architecture relevant to the present inventive arrangements and is not limiting as to the computer device to which the present inventive arrangements are applicable, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:
according to the working frequency range of a channel to be tested in the device to be tested, controlling a frequency source inside the device to be tested to output a first point frequency signal with preset power;
detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal;
and adjusting the gain calibration adjustment value of the channel to be tested according to the output power value until the output power value is within a preset power range.
In one embodiment, the processor when executing the computer program further performs the steps of: after a calibration instruction corresponding to the channel to be tested is obtained, controlling the channel to be tested to be opened; and controlling the frequency source to output a first point frequency signal of preset power corresponding to the working frequency band of the channel to be tested.
In one embodiment, the scaling instructions are determined by a timing scaling signal.
In one embodiment, the processor when executing the computer program further performs the steps of: reading the output power value of the second point frequency signal when the timing scaling signal indicates the scaling of the channel to be tested; the second point frequency signal enters power detection equipment through a multichannel coupling attenuator; the input ends of the multi-channel coupling attenuators are respectively connected with a plurality of channels to be tested.
In one embodiment, the gain scaling adjustment value is used to adjust a first attenuation value of an analog attenuator in the channel under test; the processor when executing the computer program also implements the steps of: adjusting the gain scaling adjustment value according to a preset first step; or selecting a first adjustment amount corresponding to the first difference value according to the first difference value between the output power value and the preset output power value in the power range, and adjusting the gain scaling adjustment value according to the first adjustment amount.
In one embodiment, the processor when executing the computer program further performs the steps of: acquiring a feedback power value obtained by a feedback power acquisition unit in the equipment to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the equipment to be tested; and adjusting a feedback gain calibration adjustment value of the device to be tested according to the feedback power value until a second difference value between the feedback power value and the output power value is within a preset difference value range.
In one embodiment, the feedback gain scaling adjustment value is used to adjust a second attenuation value of the analog attenuator in the feedback channel; the processor when executing the computer program also implements the steps of: adjusting the feedback gain scaling adjustment value according to a preset second step; or selecting a corresponding second adjustment amount according to the second difference value, and adjusting the feedback gain scaling adjustment value according to the second adjustment amount.
The computer device provided in this embodiment has similar implementation principles and technical effects to those of the above method embodiment, and will not be described herein.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
according to the working frequency range of a channel to be tested in the device to be tested, controlling a frequency source inside the device to be tested to output a first point frequency signal with preset power;
detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal;
and adjusting the gain calibration adjustment value of the channel to be tested according to the output power value until the output power value is within a preset power range.
In one embodiment, the computer program when executed by the processor further performs the steps of: after a calibration instruction corresponding to the channel to be tested is obtained, controlling the channel to be tested to be opened; and controlling the frequency source to output a first point frequency signal of preset power corresponding to the working frequency band of the channel to be tested.
In one embodiment, the scaling instructions are determined by a timing scaling signal.
In one embodiment, the computer program when executed by the processor further performs the steps of: reading the output power value of the second point frequency signal when the timing scaling signal indicates the scaling of the channel to be tested; the second point frequency signal enters power detection equipment through a multichannel coupling attenuator; the input ends of the multi-channel coupling attenuators are respectively connected with a plurality of channels to be tested.
In one embodiment, the gain scaling adjustment value is used to adjust a first attenuation value of an analog attenuator in the channel under test; the computer program when executed by the processor also performs the steps of: adjusting the gain scaling adjustment value according to a preset first step; or selecting a first adjustment amount corresponding to the first difference value according to the first difference value between the output power value and the preset output power value in the power range, and adjusting the gain scaling adjustment value according to the first adjustment amount.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring a feedback power value obtained by a feedback power acquisition unit in the equipment to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the equipment to be tested; and adjusting a feedback gain calibration adjustment value of the device to be tested according to the feedback power value until a second difference value between the feedback power value and the output power value is within a preset difference value range.
In one embodiment, the feedback gain scaling adjustment value is used to adjust a second attenuation value of the analog attenuator in the feedback channel; the computer program when executed by the processor also performs the steps of: adjusting the feedback gain scaling adjustment value according to a preset second step; or selecting a corresponding second adjustment amount according to the second difference value, and adjusting the feedback gain scaling adjustment value according to the second adjustment amount.
The computer readable storage medium provided in this embodiment has similar principles and technical effects to those of the above method embodiment, and will not be described herein.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A method of gain scaling, the method comprising:
according to the working frequency range of a channel to be tested in the device to be tested, controlling a frequency source inside the device to be tested to output a first point frequency signal with preset power; different communication systems are supported by different channels to be tested, and the frequency of the first point frequency signal is determined according to the center frequency point or other frequency points of the working frequency band of the channel to be tested;
detecting and obtaining an output power value of the second point frequency signal through power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal, and the conversion includes: amplifying and/or frequency converting;
and adjusting the gain calibration adjustment value of the channel to be tested according to the output power value until the output power value is within a preset power range.
2. The gain calibration method according to claim 1, wherein the controlling the frequency source inside the device under test to output the first point frequency signal of the preset power according to the operating frequency band of the channel under test in the device under test comprises:
after a calibration instruction corresponding to the channel to be tested is obtained, controlling the channel to be tested to be opened;
and controlling the frequency source to output a first point frequency signal with preset power corresponding to the working frequency band of the channel to be tested.
3. The gain scaling method of claim 2, wherein the scaling instruction is determined by a timing scaling signal.
4. A gain scaling method according to claim 3, wherein said detecting by the power detecting device an output power value of the second dot frequency signal comprises:
reading the output power value of the second point frequency signal when the timing scaling signal indicates to scale the channel to be measured; the second point frequency signal enters the power detection equipment through a multichannel coupling attenuator; the input ends of the multichannel coupling attenuators are respectively connected with a plurality of channels to be tested.
5. The gain scaling method of claim 1 wherein the gain scaling adjustment value is used to adjust a first attenuation value of an analog attenuator in the channel under test; the adjusting the gain calibration adjustment value of the channel to be measured comprises the following steps:
adjusting the gain scaling adjustment value according to a preset first step;
or alternatively, the first and second heat exchangers may be,
and selecting a first adjustment amount corresponding to the first difference value according to the first difference value between the output power value and a preset output power value in the power range, and adjusting the gain scaling adjustment value according to the first adjustment amount.
6. The gain scaling method of any one of claims 1-5, further comprising:
acquiring a feedback power value obtained by a feedback power acquisition unit in the equipment to be tested; the feedback power value is obtained according to the feedback channel coupling forward power of the equipment to be tested;
and adjusting a feedback gain calibration adjustment value of the equipment to be tested according to the feedback power value until a second difference value between the feedback power value and the output power value is within a preset difference value range.
7. The gain scaling method of claim 6 wherein the feedback gain scaling adjustment value is used to adjust a second attenuation value of an analog attenuator in the feedback path; the adjusting the feedback gain scaling adjustment value of the device under test includes:
adjusting the feedback gain scaling adjustment value according to a preset second step;
or alternatively, the first and second heat exchangers may be,
and selecting a corresponding second adjustment amount according to the second difference value, and adjusting the feedback gain scaling adjustment value according to the second adjustment amount.
8. A gain scaling device, the device comprising:
the control module is used for controlling a frequency source inside the equipment to be tested to output a first point frequency signal of preset power according to the working frequency range of a channel to be tested in the equipment to be tested; different communication systems are supported by different channels to be tested, and the frequency of the first point frequency signal is determined according to the center frequency point or other frequency points of the working frequency band of the channel to be tested;
the detection module is used for detecting and obtaining the output power value of the second point frequency signal through the power detection equipment; the second point frequency signal is obtained after the channel to be detected converts the first point frequency signal, and the conversion includes: amplifying and/or frequency converting;
and the adjusting module is used for adjusting the gain calibration adjusting value of the channel to be tested according to the output power value until the output power value is within a preset power range.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 7.
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