CN107070413A - The method of adjustment and device of power amplifier input voltage - Google Patents
The method of adjustment and device of power amplifier input voltage Download PDFInfo
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- CN107070413A CN107070413A CN201710027096.4A CN201710027096A CN107070413A CN 107070413 A CN107070413 A CN 107070413A CN 201710027096 A CN201710027096 A CN 201710027096A CN 107070413 A CN107070413 A CN 107070413A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
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Abstract
The present invention relates to the communications field, the method for adjustment and device of a kind of power amplifier input voltage are disclosed.In the present invention, the method for adjustment of power amplifier input voltage includes sampling to OFDM OFDM voltage signal, and extracts from sampled result the data of a time slot successively；Obtain the maximum amplitude of each OFDM symbol in a time slot；Maximum amplitude is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained；The input voltage of power amplifier is adjusted according to obtained operating voltage.The invention also discloses a kind of adjusting apparatus of power amplifier input voltage.Compared with prior art, the invention enables the input voltage of power amplifier can be adjusted according to OFDM voltage signal, in the case of ensureing that signal is distortionless, the too high phenomenon of the input voltage of power amplifier will not be caused to occur, so as to improve power-efficient, reduction electric current, reduction heating.
Description
Technical field
The present invention relates to the method for adjustment and device of the communications field, more particularly to power amplifier input voltage.
Background technology
With the development of science and technology, the electronic product such as mobile phone has obtained very big popularization, and has turned into people's work
With an indispensable part in life.Meanwhile, the need for meeting consumer, these electronic digital products, which typically all possess, to be broadcast
Put video, listen the various audiovisual entertainment functions such as song, and user can also use electronic product to deliver resume, data storage
Deng.
At present, power amplifier (PA) is used widely in electronic product.For example in telecom terminal product, often
Individual terminal is required at least one PA, for amplifying high frequency or low frequency signal.PA can generally divide according to whether linear zone is operated in
For A classes, AB classes and B classes etc..In 4G (4rd-generation, forth generation mobile communication technology) terminal, for 3G (3rd-
Generation, 3rd generation mobile communication technology) or 4G PA generally require to be operated in linear condition.Work in linear condition
PA is small to distorted signals, and the stray power of generation is few.As shown in figure 1, in a typical PA circuit, generally including：Power supply
Circuit 11, input circuit 12, power amplifier 13 and output circuit 14.Wherein, the power supply circuit 11 of power amplifier 13 can
Directly be battery powered, can also battery powered by converter, such as DC/DC converters (DC/DC converters for transformation input electricity
The electric pressure converter of fixed voltage is effectively exported after pressure).PA supply voltage is fixed, or supply voltage is with power etc.
Level change and change, be fixed on each power grade.
But, inventor is during the present invention is realized, discovery also has following technical problem in the prior art：Existing
Have 34,4G mobile communication, particularly in 4G mobile communication, signal has larger peak-to-average force ratio (peak power and mean power
The ratio between).In conventional fixed power source voltage schemes, supply voltage must is fulfilled for the requirement of peak power, otherwise can cause letter
Number distortion.But for other non-peak signals, if supply voltage is too high, power-efficient can be caused relatively low, heating compared with
To be serious.
The content of the invention
The purpose of the embodiment of the present invention is the method for adjustment and device for providing a kind of power amplifier input voltage so that
The input voltage of power amplifier can be adjusted according to OFDM voltage signal, ensure the distortionless situation of signal
Under, the too high phenomenon of the input voltage of power amplifier will not be caused to occur, so as to improve power-efficient, reduction electric current,
Reduction heating.
In order to solve the above technical problems, the embodiments of the invention provide a kind of adjustment side of power amplifier input voltage
Method, including：OFDM OFDM voltage signal is sampled, and extracts from sampled result time slot successively
Data；Obtain the maximum amplitude of each OFDM symbol in a time slot；Maximum amplitude is multiplied with predeterminated voltage, power is obtained and puts
The operating voltage of big device；The input voltage of power amplifier is adjusted according to obtained operating voltage.
The embodiment of the present invention additionally provides a kind of adjusting apparatus of power amplifier input voltage, including：At voltage calculating
Module is managed, is sampled for the voltage signal to OFDM OFDM, and when extracting one successively from sampled result
The data of gap；Voltage calculates processing module, is additionally operable to obtain the maximum amplitude of each OFDM symbol in a time slot；Voltage is calculated
Processing module, is additionally operable to maximum amplitude being multiplied with predeterminated voltage, obtains the operating voltage of power amplifier；Power convert mould
Block, the input voltage for adjusting power amplifier according to obtained operating voltage.
The embodiment of the present invention in terms of existing technologies, is adopted by the voltage signal to OFDM OFDM
Sample, and the data of a time slot are extracted from sampled result successively, the maximum amplitude of each OFDM symbol in a time slot is obtained,
Maximum amplitude is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained, power is adjusted according to obtained operating voltage
The input voltage of amplifier so that can be adjusted according to OFDM voltage signal to the input voltage of power amplifier,
In the case of ensureing that signal is distortionless, the too high phenomenon of the input voltage of power amplifier will not be caused to occur, so as to carry
Power-efficient high, reduction electric current, reduction heating.
In addition, obtaining in a time slot after the maximum amplitude of each OFDM symbol, by maximum amplitude and predeterminated voltage phase
Before multiplying, the method for adjustment of power amplifier input voltage also includes：By the maximum amplitude of each OFDM symbol respectively plus pre-
If value, obtains the voltage change of each OFDM symbol；Extracted in the amplitude of each OFDM symbol from a time slot maximum
During amplitude, the voltage change of maximum is extracted from all voltage changes；It is multiplied, obtains with predeterminated voltage by maximum amplitude
To power amplifier operating voltage when, maximum voltage change is multiplied with predeterminated voltage, the work of power amplifier is obtained
Make voltage.In this way, the phenomenon of signal generation distortion in subsequent power amplifier circuit can further be avoided.
In addition, obtaining in a time slot after the maximum amplitude of each OFDM symbol, by maximum amplitude and predeterminated voltage phase
Multiply, before the operating voltage for obtaining power amplifier, the method for adjustment of power amplifier input voltage also includes：According to default rule
Maximum amplitude is then divided into m grades, wherein m is the positive integer more than 1；Calculate the difference of all grades of amplitude respectively with maximum amplitude
Value；Extract the amplitude for being more than zero and the minimum corresponding shelves of value in all differences；It is multiplied, obtains with predeterminated voltage by maximum amplitude
To power amplifier operating voltage when, the amplitude of the shelves of extraction is multiplied with predeterminated voltage, the work of power amplifier is obtained
Voltage.In this way, maximum amplitude discretization can be facilitated post-processing and calibration.
In addition, preset rules are：First grade of amplitude is m/mono-, and the step-length between adjacent two grades is m/mono-.Carry
A kind of specific stepping mode that above-mentioned maximum amplitude is divided into m grades has been supplied, the feasibility of the present invention is helped to ensure that.
In addition, after obtaining the operating voltage of power amplifier, power amplifier is adjusted according to obtained operating voltage
Before input voltage, the method for adjustment of power amplifier input voltage also includes：Adjust power amplifier operating voltage when
Sequence；When adjusting the input voltage of power amplifier according to obtained operating voltage, adjusted according to the operating voltage after adjustment sequential
The input voltage of whole power amplifier.In this way, operating voltage and input voltage can be made to be in same sequential, it is ensured that
The signal of power amplifier is undistorted.
In addition, voltage calculates processing module, be additionally operable to each OFDM symbol in a time slot is obtained maximum amplitude it
Afterwards, before maximum amplitude is multiplied with predeterminated voltage, the maximum amplitude of each OFDM symbol is added into preset value respectively, obtains every
The voltage change of individual OFDM symbol；Voltage calculates processing module, is additionally operable to each OFDM symbol in a time slot is obtained
During maximum amplitude, the voltage change of maximum is extracted from all voltage changes；Voltage calculates processing module, is additionally operable to
Maximum amplitude is multiplied with predeterminated voltage, when obtaining the operating voltage of power amplifier, by maximum voltage change with presetting
Voltage is multiplied, and obtains the operating voltage of power amplifier.
In addition, voltage calculates processing module, be additionally operable to each OFDM symbol in a time slot is obtained maximum amplitude it
Afterwards, maximum amplitude is multiplied with predeterminated voltage, before the operating voltage for obtaining power amplifier, according to preset rules most significantly
Value is divided into m grades, and wherein m is the positive integer more than 1；Voltage calculates processing module, be additionally operable to calculate all grades of amplitude respectively with
The difference of maximum amplitude；Voltage calculates processing module, is additionally operable to extract in all differences and is more than zero and the minimum corresponding shelves of value
Amplitude；Voltage calculates processing module, is additionally operable to be multiplied with predeterminated voltage by maximum amplitude, obtains the work of power amplifier
During voltage, the amplitude of the shelves of extraction is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained.
In addition, the adjusting apparatus of power amplifier input voltage also includes：Time delay module, for obtaining power amplifier
Operating voltage after, before the input voltage that power amplifier is adjusted according to obtained operating voltage, adjust power amplifier
Operating voltage sequential；Power transfer module, is additionally operable to adjusting the input of power amplifier according to obtained operating voltage
During voltage, the input voltage of power amplifier is adjusted according to the operating voltage after adjustment sequential.
Brief description of the drawings
One or more embodiments are illustrative by the picture in corresponding accompanying drawing, these exemplary theorys
The element with same reference numbers label is expressed as similar element in the bright restriction not constituted to embodiment, accompanying drawing, removes
Composition is not limited the non-figure having in special statement, accompanying drawing.
Fig. 1 is the circuit block diagram of prior art intermediate power amplifier；
Fig. 2 is the flow chart of the method for adjustment according to first embodiment of the invention intermediate power amplifier input voltage；
Fig. 3 is according to the flow chart of the method for adjustment of second embodiment of the invention intermediate power amplifier input voltage；
Fig. 4 is according to the block diagram of the adjusting apparatus of third embodiment of the invention intermediate power amplifier input voltage；
Fig. 5 is according to the block diagram of the adjusting apparatus of four embodiment of the invention intermediate power amplifier input voltage.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the invention,
In order that reader more fully understands the application and proposes many ins and outs.But, even if without these ins and outs and base
Many variations and modification in following embodiment, can also realize the application technical scheme claimed.
The first embodiment of the present invention is related to a kind of method of adjustment of power amplifier input voltage.
It is noted that in LTE (Long Term Evolution, Long Term Evolution) frame structure, time slot is minimum
Handle unit.LTE defines Physical Resource Block (PRB) as the unit of air interface physical resource allocation.1 PRB is in time domain
Upper is 1 time slot.Wherein, for common CP (Cyclic Prefix, cyclic prefix), 1 time slot is continuous comprising 7
OFDM (OFDM) symbol.For extension CP, 1 time slot includes 6 OFDM symbols.Present embodiment is with one
Time slot so that 1 time slot is comprising 7 continuous OFDM symbols as an example, is illustrated as single treatment unit：
Idiographic flow is as shown in Fig. 2 it includes：
Step 201, OFDM OFDM voltage signal is sampled, and extracts from sampled result one successively
The data of individual time slot.
It is noted that in actual application, being changed into upward signal by inverse Fourier transform (IFFT)
After the signal of OFDM (OFDM) numeric field, OFDM voltage signal is sampled.
Step 202, the maximum amplitude of each OFDM symbol in a time slot is obtained.
What deserves to be explained is, in the data of one time slot of extraction from sampled result every time, obtain in a time slot
The maximum amplitude of each OFDM symbol.Specifically, for common CP, the maximum amplitude point of each OFDM symbol of acquisition
It is not VPn={ VP0, VP1, VP2, VP3, VP4, VP5, VP6 }, wherein, n={ 0,1,2,3,4,5,6 }.
Step 203, the amplitude of maximum is extracted from the amplitude of all OFDM symbols.
Specifically, from the maximum amplitude of 7 OFDM symbols, maximum amplitude is obtained.
Step 204, maximum amplitude is multiplied with predeterminated voltage, obtains the operating voltage of power amplifier.
It is noted that predeterminated voltage (VLevel-n) refers to the PA of different output power voltage.VLevel-n
Can be fixed value, such as 3.4V.VLevel-n can also be divided into different gears, such as VLevel-n=3.4V, 2.8V, 2.2V,
1.6V, 1.0V, 0.4V }, wherein, VLevel-n value is reduced and reduced n={ 0,1,2,3,4,5 } with power output.
Step 205, the input voltage of power amplifier is adjusted according to obtained operating voltage.
By the above, it is seen that, present embodiment allows to the voltage signal according to OFDM to power amplification
The input voltage of device is adjusted, and in the case of ensureing that signal is distortionless, will not cause the input voltage mistake of power amplifier
High phenomenon occurs, so as to improve power-efficient, reduction electric current, reduction heating.
Second embodiment of the present invention is related to a kind of method of adjustment of power amplifier input voltage.Second embodiment
It is the improvement done on the basis of first embodiment.As shown in figure 3, the method for adjustment of power amplifier input voltage is specifically wrapped
Include：
Step 301, OFDM OFDM voltage signal is sampled, and extracts from sampled result one successively
The data of individual time slot.
It is noted that in actual application, being changed into upward signal by inverse Fourier transform (IFFT)
After the signal of OFDM (OFDM) numeric field, OFDM voltage signal is sampled.
Step 302, the maximum amplitude of each OFDM symbol in a time slot is obtained.
What deserves to be explained is, in the data of one time slot of extraction from sampled result every time, obtain in a time slot
The maximum amplitude of each OFDM symbol.Specifically, for common CP, the maximum amplitude point of each OFDM symbol of acquisition
It is not VPn={ VP0, VP1, VP2, VP3, VP4, VP5, VP6 }, wherein, n={ 0,1,2,3,4,5,6 }.
Step 303, the amplitude of each OFDM symbol is added into preset value respectively, obtains the voltage adjustment of each OFDM symbol
Value.
It is noted that the maximum amplitude of a little higher than OFDM symbol of supply voltage, can further improve the work of power supply
Make efficiency, further avoid the phenomenon of signal generation distortion in subsequent power amplifier circuit.In the maximum of each OFDM symbol
Preset value MARGE voltages are added on amplitude VPn, are obtained, VPMn=VPn+Vmarge, the Vmarge values can be special according to PA and circuit
Property obtain, its value should be sufficiently small, and can guarantee that the work of follow-up PA circuits does not produce distortion.
Step 304, the voltage change of maximum is extracted from all voltage changes.
Specifically, can be by each numerical value in VPMn={ VPM0, VPM1, VPM2, VPM3, VPM4, VPM5, VPM6 }
It is compared respectively, extracts maximum voltage change, be designated as VPMmax.
It is noted that in actual design process, can also first extract the maximum of the amplitude of each OFDM symbol
Value.The maximum of amplitude is added into preset value, the voltage change VPMmax of maximum is obtained.
Step 305, maximum voltage change is divided into m grades according to preset rules.Wherein m is the positive integer more than 1.
It is noted that preset rules can be, but not limited to be：First grade of amplitude is m/mono-, adjacent two grades it
Between step-length be m/mono-.There is provided a kind of specific stepping mode that above-mentioned maximum amplitude is divided into m grades, help to ensure that
The feasibility of the present invention.Such as, VPMmax is divided into m grades, obtains VPMmax-p={ VPMmax/m, 2* (VPMmax/m), 3*
(VPMmax/m) ..., VPMmax }, p=0,1 ..., m-1.
Step 306, the difference of all grades of amplitude respectively with maximum voltage change is calculated.Calculate each
VPMmax-p and VPMmax difference.
Step 307, the amplitude VPMmax-p for being more than zero and the minimum corresponding shelves of value in all above-mentioned differences is extracted.
Step 308, the amplitude of the shelves of extraction is multiplied with predeterminated voltage, obtains the operating voltage of power amplifier.
Specifically, the VPMmax-p of extraction is multiplied with predeterminated voltage VLevel-n weightings, obtains VLevelPMmax-
n-p.VLevel-n is the PA voltages of different output power.VLevel-n can be fixed value, such as 3.4V.VLevel-n can also
It is divided into different gears, such as VLevel-n={ 3.4V, 2.8V, 2.2V, 1.6V, 1.0V, 0.4V }, n={ 0,1,2,3,4,5 }.Its
In, VLevel-n value is reduced and reduced with power output.In this way, can be convenient by maximum amplitude discretization
Post-processing and calibration.
It is noted that predeterminated voltage (VLevel-n) refers to the PA of different output power voltage.VLevel-n
Can be fixed value, such as 3.4V.VLevel can also be divided into different gears, such as VLevel-n=3.4V, 2.8V, 2.2V,
1.6V, 1.0V, 0.4V }, wherein, VLevel-n value is reduced and reduced n={ 0,1,2,3,4,5 } with power output.
Step 309, the sequential of the operating voltage of adjustment power amplifier.
It is noted that due to requiring stringent synchronization between PA power supplys and amplified signal, therefore adjustment in practical application
The sequential of the operating voltage of power amplifier, makes stringent synchronization between the sequential of operating voltage and the sequential of amplified signal.Surveying
In the examination stage, different delay parameters can be set, result is tested, actual time delay is used as to find applicable delay parameter
Parameter.In this way, operating voltage and input voltage can be made to be in same sequential, it is ensured that the signal of power amplifier is not
Distortion.
Step 310, the input voltage of power amplifier is adjusted according to the operating voltage after adjustment sequential.
By the above, it is seen that, present embodiment can by maximum amplitude discretization, facilitate post-processing and
Calibration, it is ensured that the signal of power amplifier is undistorted.
The step of various methods are divided above, be intended merely to description it is clear, can be merged into when realizing a step or
Some steps are split, multiple steps are decomposed into, as long as including identical logical relation, all protection domain in this patent
It is interior；To adding inessential modification in algorithm or in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
Third embodiment of the invention is related to a kind of adjusting apparatus of power amplifier input voltage, as shown in figure 4, bag
Include：Voltage calculates processing module 41, is sampled for the voltage signal to OFDM OFDM, and from sampled result
The data of a time slot are extracted successively.Voltage calculates processing module 41, is additionally operable to obtain each OFDM symbol in a time slot
Maximum amplitude.Voltage calculates processing module 41, is additionally operable to maximum amplitude being multiplied with predeterminated voltage, obtains the work of power amplifier
Make voltage.Power transfer module 42, the input voltage for adjusting power amplifier according to obtained operating voltage.
It is noted that in LTE (Long Term Evolution, Long Term Evolution) frame structure, time slot is minimum
Handle unit.LTE defines Physical Resource Block (PRB) as the unit of air interface physical resource allocation.1 PRB is in time domain
Upper is 1 time slot.Wherein, for common CP (Cyclic Prefix, cyclic prefix), 1 time slot is continuous comprising 7
OFDM (OFDM) symbol.For extension CP, 1 time slot includes 6 OFDM symbols.
Present embodiment allows to be adjusted the input voltage of power amplifier according to OFDM voltage signal,
In the case of ensureing that signal is distortionless, the too high phenomenon of the input voltage of power amplifier will not be caused to occur, so as to carry
Power-efficient high, reduction electric current, reduction heating.
It is seen that, present embodiment is the device embodiment corresponding with first embodiment, and present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, is repeated no more here.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
It is noted that each module involved in present embodiment is logic module, and in actual applications, one
Individual logic unit can be a part for a physical location or a physical location, can also be with multiple physics lists
The combination of member is realized.In addition, will not be with solving institute of the present invention in the innovative part in order to protrude the present invention, present embodiment
The technical problem relation of proposition less close unit is introduced, but this be not intended that in present embodiment be not present it is other single
Member.
Four embodiment of the invention is related to a kind of adjusting apparatus of power amplifier input voltage.4th embodiment is
Improved on the basis of the 3rd embodiment.As shown in figure 5, the adjusting apparatus of power amplifier input voltage includes：Electricity
Pressure calculates processing module 41, is sampled for the voltage signal to OFDM OFDM, and from sampled result successively
Extract the data of a time slot.Specifically, voltage calculates processing module 41 to the useful data 46 in OFDM voltage signal
Sampled.Voltage calculates processing module 41, is additionally operable to obtain the maximum amplitude of each OFDM symbol in a time slot.Potentiometer
Processing module 41 is calculated, is additionally operable to maximum amplitude being multiplied with predeterminated voltage, obtains the operating voltage of power amplifier 44.Power supply turns
Block 42 is changed the mold, the input voltage for adjusting power amplifier 44 according to obtained operating voltage.Specifically, useful data 46
By radio frequency processing module 45, transmit to power amplifier 44.By power amplifier, 44 pairs are passed through radio frequency processing module 45
Useful data 46 is amplified processing.
In addition, voltage calculates processing module 41, the maximum amplitude of each OFDM symbol in a time slot is obtained is additionally operable to
Afterwards, before maximum amplitude is multiplied with predeterminated voltage, the maximum amplitude of each OFDM symbol is added into preset value respectively, obtained
The voltage change of each OFDM symbol.Voltage calculates processing module 41, is additionally operable to each OFDM symbols in a time slot is obtained
Number maximum amplitude when, extracted from all voltage changes maximum voltage change.Voltage calculates processing module 41, also
For being multiplied by maximum amplitude with predeterminated voltage, when obtaining the operating voltage of power amplifier 44, maximum voltage is adjusted
Whole value is multiplied with predeterminated voltage, obtains the operating voltage of power amplifier 44.
In addition, voltage calculates processing module 41, the maximum amplitude of each OFDM symbol in a time slot is obtained is additionally operable to
Afterwards, maximum amplitude is multiplied with predeterminated voltage, before the operating voltage for obtaining power amplifier 44, according to preset rules most
Amplitude is divided into m grades, and wherein m is the positive integer more than 1.Voltage calculates processing module 41, is additionally operable to calculate all grades of amplitude
Respectively with the difference of maximum amplitude；Voltage calculates processing module, is additionally operable to extract in all differences and is more than zero and minimum value pair
The amplitude for the shelves answered.Voltage calculates processing module 41, is additionally operable to be multiplied with predeterminated voltage by maximum amplitude, obtains power and put
During the operating voltage of big device 44, the amplitude of the shelves of extraction is multiplied with predeterminated voltage, the operating voltage of power amplifier 44 is obtained.
In addition, preset rules are：First grade of amplitude is m/mono-, and the step-length between adjacent two grades is m/mono-.Carry
A kind of specific stepping mode that above-mentioned maximum amplitude is divided into m grades has been supplied, the feasibility of the present invention is helped to ensure that.
In addition, the adjusting apparatus of power amplifier input voltage also includes：Time delay module 43, for obtaining power amplification
After the operating voltage of device 44, before the input voltage that power amplifier 44 is adjusted according to obtained operating voltage, power is adjusted
The sequential of the operating voltage of amplifier 44.Power transfer module 42, is additionally operable to put according to obtained operating voltage adjustment power
During the input voltage of big device 44, the input voltage of power amplifier 44 is adjusted according to the operating voltage after adjustment sequential.
By the above, it is seen that, present embodiment can by maximum amplitude discretization, facilitate post-processing and
Calibration, it is ensured that the signal of power amplifier 44 is undistorted.
Because second embodiment is mutually corresponding with present embodiment, therefore present embodiment can be mutual with second embodiment
It is engaged implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second
The technique effect that can be reached in mode can similarly be realized in the present embodiment, in order to reduce repetition, no longer be gone to live in the household of one's in-laws on getting married here
State.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
It will be appreciated by those skilled in the art that realizing that all or part of step in above-described embodiment method can be by
Program instructs the hardware of correlation to complete, and the program storage is in a storage medium, including some instructions are to cause one
Individual equipment (can be single-chip microcomputer, chip etc.) or processor (processor) perform the whole of each embodiment method of the application
Or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of method of adjustment of power amplifier input voltage, it is characterised in that including：
OFDM OFDM voltage signal is sampled, and extracts from the sampled result time slot successively
Data；
Obtain the maximum amplitude of each OFDM symbol in one time slot；
The maximum amplitude is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained；
The input voltage of the power amplifier is adjusted according to the obtained operating voltage.
2. the method for adjustment of power amplifier input voltage according to claim 1, it is characterised in that described in the acquisition
In one time slot after the maximum amplitude of each OFDM symbol, before the maximum amplitude is multiplied with predeterminated voltage, the work(
The method of adjustment of rate amplifier input voltage includes：
The maximum amplitude of each OFDM symbol is added into preset value respectively, the voltage adjustment of each OFDM symbol is obtained
Value；
In the maximum amplitude of each OFDM symbol in obtaining one time slot, extracted from all voltage changes
Maximum voltage change；
Maximum amplitude is multiplied with predeterminated voltage described, when obtaining the operating voltage of power amplifier, maximum voltage adjusted
Whole value is multiplied with predeterminated voltage, obtains the operating voltage of power amplifier.
3. the method for adjustment of power amplifier input voltage according to claim 1 or 2, it is characterised in that the acquisition
It is described that the maximum amplitude is multiplied with predeterminated voltage in one time slot after the maximum amplitude of each OFDM symbol, obtain work(
Before the operating voltage of rate amplifier, the method for adjustment of the power amplifier input voltage also includes：
The maximum amplitude is divided into m grades according to preset rules, wherein m is the positive integer more than 1；
Calculate the difference of all grades of amplitude respectively with the maximum amplitude；
Extract the amplitude for being more than zero and the minimum corresponding shelves of value in all differences；
The maximum amplitude is multiplied with predeterminated voltage described, when obtaining the operating voltage of power amplifier, by the institute of extraction
The amplitude for stating shelves is multiplied with predeterminated voltage, obtains the operating voltage of power amplifier.
4. the method for adjustment of power amplifier input voltage according to claim 3, it is characterised in that the preset rules
It is：
First grade of amplitude is m/mono-, and the step-length between adjacent two grades is m/mono-.
5. the method for adjustment of power amplifier input voltage according to claim 1, it is characterised in that described to obtain power
After the operating voltage of amplifier, the operating voltage that the basis is obtained adjust the power amplifier input voltage it
Before, the method for adjustment of the power amplifier input voltage also includes：
Adjust the sequential of the operating voltage of the power amplifier；
When the operating voltage that the basis is obtained adjusts the input voltage of the power amplifier, after adjustment sequential
The operating voltage adjust the input voltage of the power amplifier.
6. a kind of adjusting apparatus of power amplifier input voltage, it is characterised in that including：
Voltage calculates processing module, is sampled for the voltage signal to OFDM OFDM, and is tied from the sampling
The data of a time slot are extracted in fruit successively；
The voltage calculates processing module, is additionally operable to obtain the maximum amplitude of each OFDM symbol in one time slot；
The voltage calculates processing module, is additionally operable to the maximum amplitude being multiplied with predeterminated voltage, obtains power amplifier
Operating voltage；
Power transfer module, the input voltage for adjusting the power amplifier according to the obtained operating voltage.
7. the adjusting apparatus of power amplifier input voltage according to claim 6, it is characterised in that the voltage is calculated
Processing module, is additionally operable to after the maximum amplitude for obtaining each OFDM symbol in one time slot, by the maximum
Before amplitude is multiplied with predeterminated voltage, the maximum amplitude of each OFDM symbol is added into preset value respectively, obtains described every
The voltage change of individual OFDM symbol；
The voltage calculates processing module, is additionally operable in the maximum amplitude of each OFDM symbol in obtaining one time slot,
The voltage change of maximum is extracted from all voltage changes；
The voltage calculates processing module, is additionally operable to that maximum amplitude is multiplied with predeterminated voltage described, obtains power amplifier
Operating voltage when, maximum voltage change is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained.
8. the adjusting apparatus of the power amplifier input voltage according to claim 6 or 7, it is characterised in that the voltage
Processing module is calculated, is additionally operable to after the maximum amplitude of each OFDM symbol in obtaining a time slot, it is described by the maximum
Amplitude is multiplied with predeterminated voltage, before the operating voltage for obtaining power amplifier, according to preset rules the maximum amplitude point
Into m grades, wherein m is the positive integer more than 1；
The voltage calculates processing module, is additionally operable to calculate the difference of all grades of amplitude respectively with the maximum amplitude；
The voltage calculates processing module, is additionally operable to extract the amplitude for being more than zero and the minimum corresponding shelves of value in all differences；
The voltage calculates processing module, is additionally operable to that the maximum amplitude is multiplied with predeterminated voltage described, obtains power and put
During the operating voltage of big device, the amplitude of the shelves of extraction is multiplied with predeterminated voltage, the operating voltage of power amplifier is obtained.
9. the adjusting apparatus of power amplifier input voltage according to claim 8, it is characterised in that the preset rules
It is：
First grade of amplitude is m/mono-, and the step-length between adjacent two grades is m/mono-.
10. the adjusting apparatus of power amplifier input voltage according to claim 6, it is characterised in that the power is put
The adjusting apparatus of big device input voltage also includes：
Time delay module, for it is described obtain the operating voltage of power amplifier after, the work electricity that the basis is obtained
Before the input voltage of the pressure adjustment power amplifier, the sequential of the operating voltage of the power amplifier is adjusted；
The power transfer module, is additionally operable to adjust the defeated of the power amplifier in the operating voltage that the basis is obtained
When entering voltage, the input voltage of the power amplifier is adjusted according to the operating voltage after adjustment sequential.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710027096.4A CN107070413B (en) | 2017-01-15 | 2017-01-15 | Method and device for adjusting input voltage of power amplifier |
| CN202010628231.2A CN111711421A (en) | 2017-01-15 | 2017-01-15 | Method and device for adjusting input voltage of power amplifier |
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| CN201710027096.4A CN107070413B (en) | 2017-01-15 | 2017-01-15 | Method and device for adjusting input voltage of power amplifier |
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| CN202010628231.2A Division CN111711421A (en) | 2017-01-15 | 2017-01-15 | Method and device for adjusting input voltage of power amplifier |
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| CN107070413A true CN107070413A (en) | 2017-08-18 |
| CN107070413B CN107070413B (en) | 2020-12-18 |
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| CN201710027096.4A Active CN107070413B (en) | 2017-01-15 | 2017-01-15 | Method and device for adjusting input voltage of power amplifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114513725A (en) * | 2020-11-17 | 2022-05-17 | 中国移动通信有限公司研究院 | Power amplifier control circuit and method |
| CN114884786A (en) * | 2021-02-05 | 2022-08-09 | 大唐移动通信设备有限公司 | Signal processing method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540966A (en) * | 2003-04-23 | 2004-10-27 | 华为技术有限公司 | Method for handling conference telephone by programmable logic device |
| CN102348264A (en) * | 2011-09-27 | 2012-02-08 | 中兴通讯股份有限公司 | Low power consumption method and system for LTE (long term evolution) base station system |
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2017
- 2017-01-15 CN CN202010628231.2A patent/CN111711421A/en not_active Withdrawn
- 2017-01-15 CN CN201710027096.4A patent/CN107070413B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540966A (en) * | 2003-04-23 | 2004-10-27 | 华为技术有限公司 | Method for handling conference telephone by programmable logic device |
| CN102348264A (en) * | 2011-09-27 | 2012-02-08 | 中兴通讯股份有限公司 | Low power consumption method and system for LTE (long term evolution) base station system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114513725A (en) * | 2020-11-17 | 2022-05-17 | 中国移动通信有限公司研究院 | Power amplifier control circuit and method |
| CN114884786A (en) * | 2021-02-05 | 2022-08-09 | 大唐移动通信设备有限公司 | Signal processing method and device |
| CN114884786B (en) * | 2021-02-05 | 2023-08-01 | 大唐移动通信设备有限公司 | Signal processing method and device |
Also Published As
| Publication number | Publication date |
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| CN107070413B (en) | 2020-12-18 |
| CN111711421A (en) | 2020-09-25 |
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