CN105187134B - The closed loop calibration method and device of transmission power - Google Patents
The closed loop calibration method and device of transmission power Download PDFInfo
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- CN105187134B CN105187134B CN201510479043.7A CN201510479043A CN105187134B CN 105187134 B CN105187134 B CN 105187134B CN 201510479043 A CN201510479043 A CN 201510479043A CN 105187134 B CN105187134 B CN 105187134B
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Abstract
The present invention is suitable for the closed loop calibration method and device of field of communication technology more particularly to transmission power.This method includes：Transmission power is divided into multiple sections, is fitted to obtain the corresponding function in each section according to multiple first feedback voltage centrifugal pumps and transmission power centrifugal pump respectively in each section；When receiving power emission request, determine that power emission asks the desired value of corresponding transmission power, the corresponding first function in section where determining the desired value of transmission power, and determine the desired value of corresponding first feedback voltage of desired value of transmission power in first function；Transmission power is adjusted, the first feedback voltage is made to reach desired value.The present invention respectively carries out each section the Function Fitting of the first feedback voltage and transmission power, the accuracy of Function Fitting is improved, to improve the closed loop calibration precision of transmission power by the way that transmission power is divided into multiple sections.
Description
Technical field
The invention belongs to field of communication technology more particularly to the closed loop calibration method and devices of transmission power.
Background technology
For the router with external power amplifier, the calibrating mode of transmission power includes open-loop calibration and closed loop school
It is accurate.Relative to open-loop calibration, closed loop calibration can shorten the factory-calibrated time, to effectively promote the production efficiency of factory.
However, calibration accuracy of the closed loop calibration mode of existing transmission power within the scope of certain transmission powers is relatively low, cause to emit
The deviation of the actual value of power and the desired value of transmission power is larger, to influence the performance of router.
Invention content
In consideration of it, an embodiment of the present invention provides a kind of closed loop calibration method and device of transmission power, it is existing to solve
Transmission power calibration accuracy of the closed loop calibration mode within the scope of certain transmission powers it is relatively low, lead to the reality of transmission power
The larger problem of deviation of the desired value of value and transmission power.
In a first aspect, an embodiment of the present invention provides a kind of closed loop calibration methods of transmission power, including：
Transmission power is divided into multiple sections, to obtain multiple first feedback voltages discrete for test respectively in each section
Value and transmission power centrifugal pump, and be fitted according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump
To the corresponding function in each section；
When receiving power emission request, determine that the power emission asks the desired value of corresponding transmission power, really
The corresponding first function in section where the desired value of the fixed transmission power, and determine transmission power described in the first function
Corresponding first feedback voltage of desired value desired value；
Transmission power is adjusted, first feedback voltage is made to reach the desired value.
Second aspect, an embodiment of the present invention provides a kind of closed loop calibration devices of transmission power, including：
Function Fitting unit, for transmission power to be divided into multiple sections, in each section respectively test obtain it is more
A first feedback voltage centrifugal pump and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps and the hair
Power discrete value is penetrated to be fitted to obtain the corresponding function in each section；
Desired value determination unit, for when receiving power emission request, determining that the power emission request is corresponding
The desired value of transmission power, the corresponding first function in section where determining the desired value of the transmission power, and determine described the
The desired value of corresponding first feedback voltage of the desired value of transmission power described in one function；
Transmission power adjustment unit makes first feedback voltage reach the desired value for adjusting transmission power.
Existing advantageous effect is the embodiment of the present invention compared with prior art：The embodiment of the present invention is by by transmission power
Multiple sections are divided into, the Function Fitting of the first feedback voltage and transmission power is carried out to each section respectively, improves function
The accuracy of fitting, to improve the closed loop calibration precision of transmission power.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the implementation flow chart of the closed loop calibration method of transmission power provided in an embodiment of the present invention；
Fig. 2 is the implementation flow chart of the closed loop calibration method for the transmission power that another embodiment of the present invention provides；
Fig. 3 is the implementation flow chart of the closed loop calibration method for the transmission power that another embodiment of the present invention provides；
Fig. 4 is the structure diagram of the closed loop calibration device of transmission power provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows the implementation flow chart of the closed loop calibration method of transmission power provided in an embodiment of the present invention, is described in detail such as
Under：
In step S101, transmission power is divided into multiple sections, test obtains multiple the respectively in each section
One feedback voltage centrifugal pump and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps and the transmitting work(
Rate centrifugal pump is fitted to obtain the corresponding function in each section.
It should be noted that the executive agent of the embodiment of the present invention can be router, or be built in router
Device, can also be other transmission powers closed loop calibration device, be not limited thereto.
Assuming that the test scope of transmission power is 0~30dBm, then transmission power can be divided into 6 sections, each section
Length be 5dBm, be not limited thereto.In embodiments of the present invention, by the way that transmission power is divided into multiple sections, and
It is fitted the first feedback voltage and the function of transmission power respectively in each section, improves the accuracy for the function that fitting obtains.
After corresponding first feedback voltage in each section of determination and the function of transmission power, by the corresponding first feedback electricity in each section
Pressure, when needing to export a transmission power, passes through the function stored in register with the function write-in register of transmission power
To adjust transmission power.
Preferably, described to be fitted to obtain with the transmission power centrifugal pump according to multiple first feedback voltage centrifugal pumps
Each the corresponding function in section includes：
It is fitted to obtain each section pair according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump
The function answeredWherein, y indicates that the transmission power, x indicate that first feedback voltage level, a, b and c distinguish table
Show the coefficient determined in fit procedure.
As an embodiment of the present invention, the corresponding function in each section isTransmission power is divided
Behind multiple sections, test obtains multiple first feedback voltage centrifugal pumps and corresponding transmission power respectively in each section
Centrifugal pump, with coefficient a, b and c in the corresponding function in each section of determination, so that it is determined that corresponding first feedback in each section
The function of voltage and transmission power.
In step s 102, when receiving power emission request, determine that the power emission asks corresponding transmitting work(
The desired value of rate, the corresponding first function in section where determining the desired value of the transmission power, and determine the first function
Described in transmission power corresponding first feedback voltage of desired value desired value.
When receiving power emission request, determine that the power emission asks the desired value of corresponding transmission power.According to
The section of the corresponding transmission power of each function of register storage, it may be determined that go out the corresponding letter of desired value of the transmission power
Number, and the corresponding function of the desired value of the transmission power is determined as first function.According to the first feedback voltage in first function
With the mapping relations of transmission power, it may be determined that the desired value of corresponding first feedback voltage of desired value of the transmission power.
In step s 103, transmission power is adjusted, first feedback voltage is made to reach the desired value.
Fig. 2 shows the implementation flow chart of the closed loop calibration method of the transmission power of another embodiment of the present invention offer, ginsengs
According to Fig. 2：
In step s 201, divider resistance is set in the feedback loop, and adjusts the resistance value of the divider resistance, so that the
For one feedback voltage in first interval, first feedback voltage refers to that initial feedback voltage is obtained by the divider resistance
Feedback voltage.
In step S202, transmission power is divided into multiple sections, test obtains multiple the respectively in each section
One feedback voltage centrifugal pump and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps and the transmitting work(
Rate centrifugal pump is fitted to obtain the corresponding function in each section；
In step S203, when receiving power emission request, determine that the power emission asks corresponding transmitting work(
The desired value of rate, the corresponding first function in section where determining the desired value of the transmission power, and determine the first function
Described in transmission power corresponding first feedback voltage of desired value desired value；
In step S204, transmission power is adjusted, first feedback voltage is made to reach the desired value.
If the executive agent of the embodiment of the present invention is the router with the external power amplifier of chip, backfeed loop refers to
Be backfeed loop between chip and power amplifier, initial feedback voltage refers to the feedback voltage at power amplifier end,
First feedback voltage refers to the feedback voltage of die terminals.In embodiments of the present invention, the receivable feedback voltage of chip is
In one section, therefore divider resistance is set in the feedback loop, and adjusts the resistance value of divider resistance in a calibration process, makes first
Feedback voltage avoids the first feedback voltage from generating transmission power catastrophe point beyond the range of first interval in first interval.
In embodiments of the present invention, by the way that divider resistance is arranged in the feedback loop, make initial feedback voltage by partial pressure
Thus the first feedback voltage that resistance obtains avoids the occurrence of transmitting in first interval during the closed loop calibration of transmission power
Chugging point, to improve the closed loop calibration precision of transmission power
Fig. 3 shows the implementation flow chart of the closed loop calibration method for the transmission power that another embodiment of the present invention provides, ginseng
According to Fig. 3：
In step S301, transmission power is divided into multiple sections, test obtains multiple the respectively in each section
One feedback voltage centrifugal pump and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps and the transmitting work(
Rate centrifugal pump is fitted to obtain the corresponding function in each section；
In step s 302, when receiving power emission request, determine that the power emission asks corresponding transmitting work(
The desired value of rate, the corresponding first function in section where determining the desired value of the transmission power, and determine the first function
Described in transmission power corresponding first feedback voltage of desired value desired value；
In step S303, transmission power is adjusted, first feedback voltage is made to reach the desired value；
In step s 304, the actual value of the corresponding transmission power of the desired value is obtained, and calculates the transmission power
Actual value and the transmission power desired value difference；
In step S305, if the absolute value of the difference is more than preset value, according to the mathematic interpolation correction value, and
The first function is corrected according to the correction value.
In embodiments of the present invention, it after so that the first feedback voltage is reached desired value by adjusting transmission power, obtains and is expected
The actual value of the corresponding transmission power of value, and calculate the difference of the actual value of transmission power and the desired value of transmission power.If transmitting
The absolute value of the difference of the actual value of power and the desired value of transmission power is more than preset value, then judges that power deviation is larger, needs
First function is modified.Herein, preset value can be 1dBm, be not limited thereto.In embodiments of the present invention, lead to
It crosses and the function of the first feedback voltage and transmission power is modified, solve the product individual ginseng occurred in factory's batch production
The inconsistent problem of number.
Preferably, described according to the mathematic interpolation correction value, and the first function packet is corrected according to the correction value
It includes：
A '=a- Δs y, b '=b-c Δ y are calculated,Wherein, Δ y indicates the difference, a ' expressions a's
Correction value, the correction value of b ' expressions b, the revised transmission power of y ' expressions.
In embodiments of the present invention, when the absolute value of the actual value of transmission power and the difference of the desired value of transmission power is big
When preset value, first function is modified, obtains revised first function
It should be understood that in embodiments of the present invention, size of the sequence numbers of the above procedures is not meant to the elder generation of execution sequence
Afterwards, the execution sequence of each process should be determined by its function and internal logic, the implementation process structure without coping with the embodiment of the present invention
At any restriction.
The embodiment of the present invention carries out the first feedback electricity to each section respectively by the way that transmission power is divided into multiple sections
The Function Fitting of pressure and transmission power, improves the accuracy of Function Fitting, to improve the closed loop calibration essence of transmission power
Degree.
Fig. 4 shows the structure diagram of the closed loop calibration device of transmission power provided in an embodiment of the present invention, which can
For the closed loop calibration method of transmission power shown in service chart 1 to 3.For convenience of description, it illustrates only and present invention reality
Apply the relevant part of example.
With reference to Fig. 4, which includes：
Function Fitting unit 41, for transmission power to be divided into multiple sections, test obtains respectively in each section
Multiple first feedback voltage centrifugal pumps and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps with it is described
Transmission power centrifugal pump is fitted to obtain the corresponding function in each section；
Desired value determination unit 42, for when receiving power emission request, determining that the power emission request corresponds to
Transmission power desired value, the corresponding first function in section where determining the desired value of the transmission power, and described in determining
The desired value of corresponding first feedback voltage of desired value of transmission power described in first function；
Transmission power adjustment unit 43 makes first feedback voltage reach the desired value for adjusting transmission power.
Preferably, the Function Fitting unit 41 is specifically used for：
Transmission power is divided into multiple sections, to obtain multiple first feedback voltages discrete for test respectively in each section
Value and transmission power centrifugal pump, and be fitted according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump
To the corresponding function in each sectionWherein, y indicates that the transmission power, x indicate first feedback voltage level,
A, b and c is illustrated respectively in the coefficient determined in fit procedure.
Preferably, described device further includes：
Divider resistance adjusts unit 44, for divider resistance to be arranged in the feedback loop, and adjusts the divider resistance
Resistance value, so that the first feedback voltage, in first interval, first feedback voltage refers to described in initial feedback voltage process
The feedback voltage that divider resistance obtains；
Preferably, described device further includes：
Difference computational unit 45, the actual value for obtaining the corresponding transmission power of the desired value, and calculate the hair
Penetrate the difference of the actual value of power and the desired value of the transmission power；
Function amending unit 46 is repaiied if the absolute value for the difference is more than preset value according to the mathematic interpolation
Positive value, and the first function is corrected according to the correction value.
Preferably, the function amending unit 46 is specifically used for：
If the absolute value of the difference is more than preset value, a '=a- Δs y, b '=b-c Δ y are calculated,
Wherein, Δ y indicates the difference, the correction value of a ' expressions a, the correction value of b ' expressions b, the revised transmitting work(of y ' expressions
Rate.
The embodiment of the present invention carries out the first feedback electricity to each section respectively by the way that transmission power is divided into multiple sections
The Function Fitting of pressure and transmission power, improves the accuracy of Function Fitting, to improve the closed loop calibration essence of transmission power
Degree.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description,
The specific work process of router and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device, router and method, it can
To realize by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Division, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be by some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of closed loop calibration method of transmission power, which is characterized in that including：
Transmission power is divided into multiple sections, in each section respectively test obtain multiple first feedback voltage centrifugal pumps with
Transmission power centrifugal pump, and be fitted to obtain often according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump
The corresponding function in a section；
When receiving power emission request, determines that the power emission asks the desired value of corresponding transmission power, determine institute
The corresponding first function in section where stating the desired value of transmission power, and determine the phase of transmission power described in the first function
Prestige is worth the desired value of corresponding first feedback voltage；
Transmission power is adjusted, first feedback voltage is made to reach the desired value；
It is described transmission power is divided into multiple sections before, the method further includes：
Divider resistance is set in the feedback loop, and adjusts the resistance value of the divider resistance, so that first feedback voltage exists
In first interval, the backfeed loop refers to the chip and the power on the router with the external power amplifier of chip
Backfeed loop between amplifier, first feedback voltage refer to what initial feedback voltage was obtained by the divider resistance
The feedback voltage of die terminals, the initial feedback voltage refer to the feedback voltage at power amplifier end.
2. the method as described in claim 1, which is characterized in that described according to multiple first feedback voltage centrifugal pumps and institute
It states transmission power centrifugal pump and is fitted to obtain the corresponding function in each section and include：
It is fitted to obtain each section according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump corresponding
FunctionWherein, y indicates that the transmission power, x indicate first feedback voltage level, and a, b and c are illustrated respectively in
The coefficient determined in fit procedure.
3. method as claimed in claim 2, which is characterized in that in the adjusting transmission power, make first feedback voltage
After reaching the desired value, the method further includes：
The actual value of the corresponding transmission power of the desired value is obtained, and calculates the actual value of the transmission power and the transmitting
The difference of the desired value of power；
If the absolute value of the difference is more than preset value, repaiied according to the mathematic interpolation correction value, and according to the correction value
The just described first function.
4. method as claimed in claim 3, which is characterized in that it is described according to the mathematic interpolation correction value, and according to described
Correction value corrects the first function：
A '=a- Δs y, b '=b-c Δ y are calculated,Wherein, Δ y indicates the difference, the amendment of a ' expressions a
Value, the correction value of b ' expressions b, the revised transmission power of y ' expressions.
5. a kind of closed loop calibration device of transmission power, which is characterized in that including：
Function Fitting unit, for transmission power to be divided into multiple sections, test obtains multiple the respectively in each section
One feedback voltage centrifugal pump and transmission power centrifugal pump, and according to multiple first feedback voltage centrifugal pumps and the transmitting work(
Rate centrifugal pump is fitted to obtain the corresponding function in each section；
Desired value determination unit, for when receiving power emission request, determining that the power emission asks corresponding transmitting
The desired value of power, the corresponding first function in section where determining the desired value of the transmission power, and determine first letter
The desired value of corresponding first feedback voltage of desired value of transmission power described in number；
Transmission power adjustment unit makes first feedback voltage reach the desired value for adjusting transmission power；
Described device further includes：
Divider resistance adjusts unit, for before transmission power is divided into multiple sections by Function Fitting unit, adjusting anti-
It is fed back to the resistance value for the divider resistance being arranged in road, so that first feedback voltage, in first interval, the backfeed loop is
Refer to the backfeed loop between the chip and the power amplifier on the router with the external power amplifier of chip, it is described
First feedback voltage refers to the feedback voltage for the die terminals that initial feedback voltage is obtained by the divider resistance, described initial
Feedback voltage refers to the feedback voltage at power amplifier end.
6. device as claimed in claim 5, which is characterized in that the Function Fitting unit is specifically used for：
Transmission power is divided into multiple sections, in each section respectively test obtain multiple first feedback voltage centrifugal pumps with
Transmission power centrifugal pump, and be fitted to obtain often according to multiple first feedback voltage centrifugal pumps and the transmission power centrifugal pump
The corresponding function in a sectionWherein, y indicates that the transmission power, x indicate first feedback voltage level, a, b
It is illustrated respectively in the coefficient determined in fit procedure with c.
7. device as claimed in claim 6, which is characterized in that described device further includes：
Difference computational unit, the actual value for obtaining the corresponding transmission power of the desired value, and calculate the transmission power
Actual value and the transmission power desired value difference；
Function amending unit, if the absolute value for the difference is more than preset value, according to the mathematic interpolation correction value, and
The first function is corrected according to the correction value.
8. device as claimed in claim 7, which is characterized in that the function amending unit is specifically used for：
If the absolute value of the difference is more than preset value, a '=a- Δs y, b '=b-c Δ y are calculated,Wherein,
Δ y indicates the difference, the correction value of a ' expressions a, the correction value of b ' expressions b, the revised transmission power of y ' expressions.
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| CN201510479043.7A CN105187134B (en) | 2015-08-06 | 2015-08-06 | The closed loop calibration method and device of transmission power |
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| CN201510479043.7A CN105187134B (en) | 2015-08-06 | 2015-08-06 | The closed loop calibration method and device of transmission power |
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| CN105187134B true CN105187134B (en) | 2018-09-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610996A (en) * | 2012-01-19 | 2012-07-25 | 厦门优迅高速芯片有限公司 | Method and device for rapidly calibrating luminous power |
| CN103686968A (en) * | 2013-12-03 | 2014-03-26 | 波达通信设备（广州）有限公司 | Calibration method and calibration circuit for transmitted power of digital microwave transceiver |
| CN104301048A (en) * | 2014-09-12 | 2015-01-21 | 深圳市极致汇仪科技有限公司 | Power calibration method of transmitting/receiving equipment |
| CN104821845A (en) * | 2015-05-13 | 2015-08-05 | 四川华拓光通信股份有限公司 | Method for calibrating luminous power of receiving end of optical module |
-
2015
- 2015-08-06 CN CN201510479043.7A patent/CN105187134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610996A (en) * | 2012-01-19 | 2012-07-25 | 厦门优迅高速芯片有限公司 | Method and device for rapidly calibrating luminous power |
| CN103686968A (en) * | 2013-12-03 | 2014-03-26 | 波达通信设备（广州）有限公司 | Calibration method and calibration circuit for transmitted power of digital microwave transceiver |
| CN104301048A (en) * | 2014-09-12 | 2015-01-21 | 深圳市极致汇仪科技有限公司 | Power calibration method of transmitting/receiving equipment |
| CN104821845A (en) * | 2015-05-13 | 2015-08-05 | 四川华拓光通信股份有限公司 | Method for calibrating luminous power of receiving end of optical module |
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