CN107659364A - A kind of control method and device of rf terminal - Google Patents
A kind of control method and device of rf terminal Download PDFInfo
- Publication number
- CN107659364A CN107659364A CN201610597617.5A CN201610597617A CN107659364A CN 107659364 A CN107659364 A CN 107659364A CN 201610597617 A CN201610597617 A CN 201610597617A CN 107659364 A CN107659364 A CN 107659364A
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- Prior art keywords
- detection means
- transmitting
- emitter
- calibration
- transmitting detection
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
Abstract
A kind of control method and device of rf terminal, the control method include：After rf terminal start, the transmitting detection means is calibrated, to obtain calibration result；According to the imperfection for the calibration result compensation transmitting detection means for being calibrated to obtain to the transmitting detection means；The emitter is calibrated using the transmitting detection means after compensation, compensated with the imperfection launched the data of the emitter.Methods described and device can lift the accuracy of rf terminal detection and calibration.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of control method and device of rf terminal.
Background technology
For the accuracy of lifting rf terminal data transmitting, it will usually rf terminal is detected and calibrated, from this
In angle, rf terminal can include emitter and transmitting detection means, and emitter is used for the transmitting to data, transmitting inspection
Survey device to be used to detect rf terminal, to calibrate rf terminal.
But in the prior art, the detection to rf terminal has to be hoisted with the accuracy calibrated.
The content of the invention
Present invention solves the technical problem that it is the accuracy of detection and calibration of the lifting to rf terminal.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of control method of rf terminal, including：Described
After rf terminal start, the transmitting detection means is calibrated, to obtain calibration result；According to the transmitting detection dress
Put the imperfection for the calibration result compensation transmitting detection means for being calibrated to obtain；Examined using the transmitting after compensation
Survey device to calibrate the emitter, compensated with the imperfection launched the data of the emitter.
Optionally, carrying out calibration to the transmitting detection means includes：Rf terminal produces original test signal, the original
Beginning test signal, via the miscellaneous part of the transmitting detection means, arrives from one end of the transmitting detection means access test point
Up to the Signal Processing Element of the transmitting detection means；The Signal Processing Element of the transmitting detection means is according to the original survey
The signal of trial signal and the Signal Processing Element for reaching the transmitting detection means, school is carried out to the transmitting detection means
It is accurate.Optionally, the original test signal is the sine wave of predeterminated frequency, and the predeterminated frequency is according to the work of the rf terminal
Working frequency, offset and bandwidth determine.
Optionally, the result compensation transmitting detection means that the basis is calibrated to the transmitting detection means
Imperfection includes：Connect according to the feedback for the result configuration transmitting detection means calibrated to the transmitting detection means
Digital front-end is received, to compensate the imperfection of the transmitting detection means.
Optionally, the transmitting detection means is used for the multiple test points for detecting the emitter；It is described to use compensation
The transmitting detection means afterwards carries out calibration to the emitter to be included：Pressed using the transmitting detection means after compensation
The signal of different test points is progressively obtained according to the data flow of data transmitting, to be repeatedly gradually completing the school to the emitter
It is accurate；The calibration being repeatedly gradually completing to the emitter includes：Obtained every time according to the data flow of data transmitting
After the signal of preceding test point, the calibration in preceding test point is flowed to according to the complete paired data of the signal obtained in preceding test point,
And the emitter of stating is compensated according to the calibration result in preceding test point；Data flow is in rear detection next time
Point calibration be based on compensation after emitter carry out.
Optionally, the emitter includes radio frequency sending set, power amplifier and radio-frequency front-end, the power amplification
The input of device is connected to the radio frequency sending set, and the output end of the power amplifier is connected to the radio-frequency front-end, described
Carrying out calibration to the emitter using the transmitting detection means after compensation includes：The transmitting detection means detection institute
The signal of radio frequency sending set output end is stated, the radio frequency sending set according to test result calibration, to compensate the radio frequency sending set
Imperfection；The test point of the power amplifier output is detected using the transmitting detection means after compensation, to enter
Row RF algorithms are trained, and the result of the RF algorithms training is used to carry out predistortion to the data of emitter transmitting.
Optionally, in addition to：During the emitter is operated data transmitting, while utilize the work
Data carry out RF algorithms training, antenna tuning control and/or Power Control；Wherein：The result of the RF algorithms training is used
In the data for correcting the rf terminal transmitting；The antenna tuning control includes：Transmitting detection dress after control compensation
Put and the transmission signal of the emitter is detected, the signal obtained according to detection configures antenna tuner；The power
Control includes：The transmission signal of the emitter is detected using the transmitting detection means after compensation, with to launch terminal
Carry out closed loop power's control.
Optionally, the control method of the rf terminal also includes：In the idle phase of the emitter, cycle triggering
Calibration to the transmitting detection means, the calibration to the emitter and/or RF algorithms training；Wherein, the radio frequency
The result of Algorithm for Training is used to carry out predistortion to the data of emitter transmitting.
Optionally, it is described calibration is carried out to the transmitting detection means to include the following at least one of calibration：Direct current offset, IQ
Imbalance, nonlinear gain, frequency response.
Optionally, the transmitting detection means using after compensation is calibrated to the emitter, including school
At least one of below accurate：Outgoing carrier leakage, IQ imbalances, nonlinear gain, frequency response.
Optionally, under different frequencies, bandwidth or gain, the transmitting detection means and the transmitting are detected respectively
Device is calibrated.
The embodiment of the present invention also provides a kind of control device of rf terminal, and the rf terminal includes emitter and hair
Penetrate detection means, it is characterised in that the control device includes：Launch testing calibration unit, suitable for the transmitting detection dress
Put and calibrated, to obtain calibration result；Transmitting detection compensating unit, suitable for being calibrated according to the transmitting detection means
Result compensation it is described transmitting detection means imperfection；Transmitting calibration unit, it is adapted in use to the transmitting inspection after compensation
Survey device to calibrate the emitter, compensated with the imperfection launched the data of the emitter.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：
After rf terminal start, transmitting detection means is calibrated first, entered according to the transmitting detection means
The imperfection for the calibration result compensation transmitting detection means that row calibration obtains, after being compensated to detection means, then
The emitter is calibrated using the transmitting detection means after compensation, so as to avoid introducing transmitting detection dress
Put the error of itself so that transmitting detection means is more accurate to the testing result of emitter, and then can cause to transmitting
The non-ideal type compensation of device is more accurate, can further lift the accuracy of emitter data transmitting.
Brief description of the drawings
Fig. 1 is a kind of flow chart of rf terminal control method in the embodiment of the present invention；
Fig. 2 is a kind of structural representation for launching detection means in the embodiment of the present invention；
Fig. 3 is a kind of flow chart for the calibration process for launching detection means in the embodiment of the present invention；
Fig. 4 is a kind of structural representation for launching detection means in the embodiment of the present invention；
Fig. 5 is a kind of flow chart calibrated to transmitting detection means in the embodiment of the present invention；
Fig. 6 is the structural representation of another rf terminal in the embodiment of the present invention；
Fig. 7 is a kind of flow chart calibrated to emitter in the embodiment of the present invention；
Fig. 8 is a kind of flow chart being calibrated and compensated for radio frequency sending set in the embodiment of the present invention；
Fig. 9 is a kind of structural representation of the control device of rf terminal in the embodiment of the present invention；
Figure 10 is a kind of structural representation of transmitting calibration unit in the embodiment of the present invention.
Embodiment
As it was previously stated, the accuracy for lifting rf terminal data transmitting, it will usually detected to rf terminal and school
Standard, from this angle, rf terminal can be divided into emitter and transmitting detection means, and emitter is used for the hair to data
Penetrate, transmitting detection means is used to detect emitter, to be calibrated to emitter.
In embodiments of the present invention, after rf terminal start, transmitting detection means is calibrated first, according to institute
The calibration result compensation imperfection for launching detection means that transmitting detection means is calibrated to obtain is stated, is filled to detection
Put after compensating, reuse the transmitting detection means after compensation and the emitter is calibrated, so as to keep away
Exempt to introduce the error for launching detection means itself so that transmitting detection means is more accurate to the testing result of emitter, enters
And can make it that the non-ideal type compensation to emitter is more accurate, it can further lift the standard of emitter data transmitting
True property.
It is understandable to enable above-mentioned purpose, feature and the beneficial effect of the present invention to become apparent, below in conjunction with the accompanying drawings to this
The specific embodiment of invention is described in detail.
Fig. 1 is a kind of flow chart of rf terminal control method in the embodiment of the present invention.
In step s 11, after rf terminal start, the transmitting detection means is calibrated, to obtain school
Quasi- result.
Rf terminal can be the various terminals for possessing data transmit-receive function, such as can be the intelligence in moving communicating field
Can communication terminal.Rf terminal can generally include emitter and transmitting detection means, wherein：Emitter carries out data
Send；Transmitting detection means can detect to rf terminal, such as emitter can be detected, its testing result
It can be used for being calibrated and compensated for rf terminal, to cause the characteristic of rf terminal more preferable, so as to more accurate
Carry out data transmitting.
In specific implementation, the structural representation for launching detection means may refer to Fig. 2, and transmitting detection means 20 can wrap
Include digital signal processor 21, feedback reception digital front-end 22 and RF FEEDBACK receiver 23.
Wherein, RF FEEDBACK receiver 23 can be detected to rf terminal, and typically emitter is detected,
Test signal can also be accessed, to carry out self-test in itself to transmitting detection means；It can include and decline in RF FEEDBACK receiver 23
Subtract the one or more in the devices such as device, power amplifier, demodulator, wave filter analog-digital converter, using these devices to inspection
The analog signal measured is handled, and obtains data signal, in order to which digital signal processor 21 is carried out according to the data signal
Further calibration.
These devices may all have imperfection in transmitting detection means, consequently, it is possible to bringing transmitting detection means
Imperfection, therefore transmitting detection means is calibrated and compensated for include the calibration to the imperfection of above-mentioned device.
In specific implementation, emitter can support multifrequency point, more bandwidth or the emitter of more gains, now right
It can be under different frequencies, bandwidth or gain, respectively to the transmitting detection means that transmitting detection means, which carries out calibration,
Each calibration item is calibrated, and each calibration item can be any one following or more alignment item：Direct current offset, IQ are uneven
Weighing apparatus, nonlinear gain, frequency response.
In an embodiment of the present invention, there are multiple calibration items to need to calibrate, multiple calibration items can now be carried out one by one
Calibration, after the completion of the calibration of each calibration item, the corresponding compensating module of digital front-end is configured according to calibration result, transmitting is detected
Device compensates and then carried out using the transmitting detection means after compensation the calibration of next calibration item.
Also repeatedly transmitting detection means can be calibrated and compensated for, being calibrated and compensated for each time can be for not
With calibration item, can be to be carried out based on being calibrated and compensated for of preceding calibration item in the calibration of rear calibration item.Can be
After completing being calibrated and compensated for of all calibration items to launching detection means, the transmitting detection means after compensation is recycled to transmitting
Device is detected.
In specific implementation, Fig. 3 may refer to the calibration process for launching detection means, can include：
Step S31, rf terminal produce original test signal, and the original test signal connects from the transmitting detection means
Enter one end of test point via the miscellaneous part of the transmitting detection means, reach the signal processing part for launching detection means
Part.
Original test signal can be the sine wave of predeterminated frequency, and the predeterminated frequency can be according to the rf terminal
The factor such as working frequency, offset and bandwidth determine.Original test signal can launch the test letter in detection means
The generation of number maker.
In specific implementation, the test signal maker in RF Technology for Measuring can be produced original with channelized frequencies synthesizer
Test signal, because the power output of the frequency synthesizer of rf terminal is generally larger, the output of frequency synthesizer can be entered
Row is decayed to obtain original test signal.
For example, adjustable attenuator can be set in test signal maker, to adjust the power output of test signal, make
The power output for obtaining test signal is suitable to calibrate RF Technology for Measuring.In an embodiment of the present invention, can also use
Fixed attenuator, with offer -20dB fixed attenuations.
RF Technology for Measuring can access test point, to be detected to test point, obtain detection signal, can also access
Original test signal is with to RF Technology for Measuring.Original test signal is inputted in one end of transmitting detection means access test point,
Such as in the structural representation of transmitting detection means as shown in Figure 4, RF Technology for Measuring can be selected by gating switch 41
Selecting property enters test point, the original test signal can from one end of the transmitting detection means access test point, that is, from
Gating switch 41 is accessed in RF Technology for Measuring.
In transmitting detection means as shown in Figure 4, original test signal accesses from gating switch 41, is detected via transmitting
Fixed gain broad band amplifier 43, demodulator 44, variable gain baseband amplifier 45, tunable low pass filter 46 in device,
After analog-digital converter 47 and feedback reception digital front-end 22, the Signal Processing Element for reaching transmitting detection means is numeral
Signal processor 21.
Can be received by digital signal processor 21 according to original test signal and digital signal processor 21 with
The corresponding signal of original test signal, transmitting detection means is calibrated.From original test signal via path can
Go out, transmitting detection means is calibrated, covered to fixed gain broad band amplifier 43, demodulator 44, variable gain base band
The unreasonably of the devices such as amplifier 45, tunable low pass filter 46, analog-digital converter 47 and feedback reception digital front-end 22
The calibration for the property thought.
In the prior art, it is typically to be completed before dispatching from the factory to the calibration for launching detection means, beyond rf terminal
Equipment provides test signal and transmitting detection means is calibrated.Due to transmitting detection means, characteristic can occur in use
Change, such as the increase in different environment or with usage time, characteristic can be changed, and one is carried out only before dispatching from the factory
Accuracy lifting of the secondary calibration to launching detection means is limited.
The rf terminal of the embodiment of the present invention can generate original detection signal, so as to after each start to radio frequency
Detection means is calibrated and compensated for, and then can greatly promote the accuracy of RF Technology for Measuring.In addition, rf terminal can be with
For channelized frequencies synthesizer to produce original detection signal, rf terminal cost is relatively low.
Step S32, the Signal Processing Element of the transmitting detection means is according to the original test signal and the arrival
The signal of the Signal Processing Element of the transmitting detection means, the transmitting detection means is calibrated.
For example, in rf terminal as shown in Figure 4, the digital signal processor 21 launched in detection means can root
At according to primary signal caused by test signal maker 41 and via arrival data signal after the miscellaneous part of transmitting detection means
The signal of device 21 is managed, transmitting detection means is calibrated.
With continued reference to Fig. 1, in step s 12, according to the calibration result for being calibrated to obtain to the transmitting detection means
Compensate the imperfection of the transmitting detection means.
Calibration result can be obtained after being calibrated to transmitting detection means, the result can indicate that transmitting detection means is non-
The quantized values of desirability or the characteristic to launching detection means imperfection indicate.Can be right according to calibration result
Transmitting detection means compensates, for example, can be compensated in feedback reception digital front-end 22 as shown in Figure 2.
Can be compensation corresponding with calibration item to the compensation for launching detection means in specific implementation, such as according to school
DC-offset compensation, IQ imbalance compensations, nonlinear gain compensation, frequency response compensation etc. are to each calibration corresponding to quasi- item progress
It can set up corresponding compensation circuit in detection means is launched or mended in emitter that item, which compensates,
Repay, or can also be compensated using independent compensating unit.
, can be with as it was previously stated, emitter can be the emitter that can be transmitted to multi-path digital baseband signal
Comprising multiple radio frequency paths, and can be launched in different frequency and bandwidth.Accordingly, launching detection means can be right
The different radio frequency path of emitter is detected, and sets different test points, and can be to emitter in different frequencies
Point and bandwidth are detected.
Accurately emitter can be detected in all cases in order to ensure to launch detection means, to transmitting
The calibration of detection means can be carried out respectively in different frequency and bandwidth, specifically, different original test letters can be produced
Number, it is calibrated and compensated under different frequencies and bandwidth with carrying out different calibration items to transmitting detection means.
With reference to Fig. 4, RF FEEDBACK receiver can include variable gain baseband amplifier 45, because variable gain base band is put
Big device 45 can also have different gain shifts, in order to ensure variable gain baseband amplifier 45 in different gain shifts
Accurately detected with the signal to test point, it is also desirable to carry out the school of each calibration item respectively to different gain shifts
It is accurate.
Fig. 5 shows a kind of flow chart calibrated to transmitting detection means, below in conjunction with Fig. 5 to the step S11 in Fig. 1
It is further described with step S12.
In step s 51, the original test signal of rf terminal generation predeterminated frequency and bandwidth is controlled, and can described in configuration
The gain shift of variable-gain baseband amplifier.
Wherein, the original test signal of predeterminated frequency and bandwidth can be according to the optional working frequency of emitter and work
Make bandwidth setting, the gear of variable gain baseband amplifier can be that actual disposition variable gain base band is put in transmitting detection means
The gear of big device.
In step S52, judge whether calibrated all frequencies to be calibrated, if calibrated all frequencies to be calibrated, are tied
Line journey, otherwise perform step S53.
Frequency to be calibrated can determine according to emitter, if carrying out school to all possible working frequency points of emitter
Standard, then it can be determined that as to calibrate all frequencies to be calibrated.
In step S53, judge whether calibrated all bandwidth to be calibrated, if calibrated all bandwidth to be calibrated, are tied
Line journey, otherwise perform step S54.
Similar to frequency to be calibrated, bandwidth to be calibrated can determine according to emitter, can if all to emitter
Can bandwidth of operation calibrated, then can be determined that as to calibrate all frequencies to be calibrated.
In step S54, judge whether all gears of calibrated variable gain baseband amplifier, if calibrated variable increasing
All gears of beneficial baseband amplifier, then step S59 is performed, otherwise perform step S55.
In step S55, direct current offset calibration is carried out, and DC-offset compensation is carried out according to calibration result.
Wherein DC-offset compensation can be completed by launching detection means, such as connect by launching feedback in detection means
Digital front-end 22 (referring to Fig. 2) is received to complete.
In step S56, IQ imbalances and/or nonlinear gain calibration are carried out, and it is non-according to IQ imbalances and/or gain
Linear gauging result compensates.
In step S57, frequency response calibration is carried out, and frequency response compensation is carried out according to calibration result.
In step S58, gain control word is changed, to change the gain shift of variable gain baseband amplifier.
In step S59, change the bandwidth of original test signal.
In step S510, change the frequency of original test signal.
As can be seen that when being calibrated one by one to each calibration item, completed to the calibration in preceding calibration item and benefit
Continue on the basis of repaying to being calibrated in rear calibration item.
With continued reference to Fig. 1, in step s 13, the emitter is entered using the transmitting detection means after compensation
Row calibration, is compensated with the imperfection launched the data of the emitter.
, can be first to being calibrated and compensated for transmitting detection means, to improve transmitting detection after rf terminal start
The imperfection of device, and the accuracy of transmitting detection means is lifted, after completing to transmitting being calibrated and compensated for of detection means,
The imperfection for recycling the transmitting detection means after compensation to launch the data of emitter compensates.
In specific implementation, the transmitting detection means using after compensation carries out calibration to the emitter can
With including：The data flow launched using the transmitting detection means after compensation according to data progressively obtains different test points
Signal, to be repeatedly gradually completing the calibration to the emitter.
For example, rf terminal can include radio frequency path, power amplifier and radio-frequency front-end, digital baseband signal passes through successively
Radio frequency path, power amplifier are crossed, signal corresponding with digital baseband signal, the data of data transmitting are sent by radio-frequency front-end
Flow direction is followed successively by radio frequency path to power amplifier to radio-frequency front-end.
Obtain after the signal of preceding test point according to the data flow of data transmitting, obtained according to described in preceding test point every time
The complete paired data of signal taken flows to the calibration in preceding test point, and is stated according to the calibration result in preceding test point to described
Emitter compensates；What the emitter after data flow is based on compensation in the calibration of rear test point next time was carried out.
Fig. 6 is the structural representation of another rf terminal in the embodiment of the present invention, below in conjunction with Fig. 6 to step in Fig. 1
S13 is further described.
Rf terminal includes multiple radio frequency paths 24, can launch and lead to from different digital baseband signals, each radio frequency
The output end on road can be connected to power amplifier 25, and be launched by radio-frequency front-end 26.
Access from the input of RF algorithms unit per railway digital baseband signal, passed through successively according to arrow direction indication in figure
Emitter digital front-end 242, radio frequency sending set 243, power amplifier 25 and radio-frequency front-end 26 are crossed, in signal from radio-frequency front-end
After 26 transmittings, also from the feedback signal (not shown) of radio-frequency front-end, the data flow of data transmitting is above-mentioned signal stream
Direction.
The first test point P1 of the input positioned at power amplifier is sequentially provided with above-mentioned directions of signal flow；Second inspection
Measuring point P2, for detecting the output signal of power amplifier；3rd test point P3, detect the feedback signal from radio-frequency front-end.
Obtain after the signal of preceding test point according to the data flow of data transmitting, obtained according to described in preceding test point every time
The complete paired data of signal taken flows to the calibration in preceding test point, and is stated according to the calibration result in preceding test point to described
Emitter compensates；What the emitter after data flow is based on compensation in the calibration of rear test point next time was carried out.
For example, RF FEEDBACK receiver 23 can first access the first test point P1, school is carried out to RF FEEDBACK receiver 243
Accurate and compensation, after compensating RF FEEDBACK receiver 243, then accesses the second test point P2, is calibrated and compensated for accordingly.
The RF algorithms that are calibrated and compensated for including that wherein accessing the second test point P2 can be carried out are trained.This area skill
Art personnel are it is understood that the setting and calibration of test point, the content compensated can be arranged as required to.
Fig. 7 is a kind of flow chart calibrated to emitter in the embodiment of the present invention.
Emitter in the embodiment of the present invention can include radio frequency sending set, power amplifier and radio-frequency front-end, institute
The input for stating power amplifier is connected to the radio frequency sending set, the step S13 in Fig. 1 can with including：
In step S71, the transmitting detection means detects the signal of the radio frequency sending set output end, according to testing result
The radio frequency sending set is calibrated, to compensate the imperfection of the radio frequency sending set.
In specific implementation, the calibration to radio frequency sending set can include outgoing carrier leakage, IQ is uneven, gain is non-thread
Any one of property, frequency response are multinomial.
When including multichannel transmitting path in emitter, the radio frequency sending set in each transmitting path can be entered successively
Row calibration., can be right successively under different frequencies, bandwidth when RF transmitter can be operated in a variety of frequencies, bandwidth
Each calibration item of radio frequency sending set is gradually calibrated.When radio-frequency transmissions detection means includes the adjustable gain amplifier of gear
When, such as the variable gain baseband amplifier in Fig. 4, the different stalls of gain amplifier can be calibrated successively.
Fig. 8 is a kind of flow chart being calibrated and compensated for radio frequency sending set in the embodiment of the present invention, below in conjunction with Fig. 8 pairs
Step S71 in Fig. 7 is further described.
In step S81, the emitter is configured to generate the test signal of predeterminated frequency and bandwidth, and described in configuration
The gain shift of variable gain baseband amplifier.
Can be that the digital baseband in rf terminal is configured by digital signal processor, by digital base in specific implementation
With the test signal for producing predeterminated frequency and bandwidth, digital baseband can produce different frequency and bandwidth according to default order
Test signal, the final test signal for producing all frequencies and bandwidth that emitter can work.
The first feedback signal that the input of RF FEEDBACK receiver from the power amplifier receives, it is by digital base
Test signal with generation can reflect the unreasonably of radio frequency path via the signal obtained after radio frequency path, the first feedback signal
The property thought, subsequent calibration procedure are carried out according to the first feedback signal.
Digital signal processor can configure the gain shelves of variable gain baseband amplifier by way of changing control word
Position so that the gear of variable gain baseband amplifier forms different combinations from different frequencies and bandwidth, to complete to transmitting
Device is possible to the detection of mode of operation.
In step S82, judge whether calibrated all frequencies to be calibrated, if calibrated all frequencies to be calibrated, are tied
Line journey, otherwise perform step S83.
Wherein, it is to be calibrated to whether having completed the judgements of all frequencies to be calibrated and being completed by digital signal processor
Frequency can be according to all possible working frequency points of emitter of rf terminal.
In step S83, judge whether calibrated all bandwidth to be calibrated, if calibrated all bandwidth to be calibrated, are tied
Line journey, otherwise perform step S84.
Similar to frequency to be calibrated, to whether completed the judgements of all bandwidth to be calibrated can be by digital signal processor
Complete, bandwidth to be calibrated can be according to all possible bandwidth of operation of emitter of rf terminal.
In step S84, judge whether all gears of calibrated variable gain baseband amplifier, if calibrated variable increasing
All gears of beneficial baseband amplifier, then step S89 is performed, otherwise perform step S85.
In step S85, outgoing carrier leakage, IQ imbalances and/or nonlinear gain calibration are carried out, obtains calibration knot
Fruit.
In a step s 86, carrier wave leakage, IQ imbalances are compensated according to calibration result.
In step S87, frequency response calibration is carried out, and frequency response compensation is carried out according to calibration result.
As it was previously stated, it can be that digital signal processor will that carrier wave leakage, IQ imbalances or frequency response, which are compensated,
Calibration result is configured to corresponding compensation circuit, is compensated by corresponding compensation circuit, and compensation circuit can connect positioned at feedback
Digital front-end is received, emitter can also be located at.
In step S88, digital signal processor change gain control word, to change the increasing of variable gain baseband amplifier
Beneficial gear.
In step S89, DSP CONTROL digital baseband changes the bandwidth of test signal.
In step S810, DSP CONTROL digital baseband changes the frequency of test signal.
It is calibrated and compensated for similar to RF FEEDBACK receiver, when being calibrated and compensated for radio frequency sending set, if
There are multiple calibration items, it is necessary to calibrate one by one, then calibration result can be configured to feedback reception number after the completion of each calibration item
The corresponding compensation circuit in word front end is compensated and then calibrated next time.Launch the preparatory stage.
With continued reference to Fig. 7, in step S72, the power amplification is detected using the transmitting detection means after compensation
The test point of device output end, to carry out RF algorithms training, the result of the RF algorithms training is used for the emitter
The data of transmitting carry out predistortion.
The test point of power amplifier output can be the second test point P2 (referring to Fig. 6), and Algorithm for Training can be more
Kind Algorithm for Training, can be separate between each algorithm when carrying out Algorithm for Training., as needed independent startup or
The training process of a certain algorithm is not started.
In specific implementation, RF algorithms training can combine sampled point P4 (referring to Fig. 6) and complete, can be according to sampled point
RF algorithms training is carried out with the signal of test point, obtains the coefficient of each RF algorithms, such as DPD training, C-IM3 can be carried out
Predistortion training etc..
The data that the result trained using RF algorithms is launched emitter carry out predistortion and also belong to send out radio frequency
Injection device is calibrated and compensated for.
In specific implementation, (including penetrated to transmitting being calibrated and compensated for of detection means, to being calibrated and compensated for of emitter
Frequency Algorithm for Training), i.e. step S11, step S12 and step S13 in Fig. 1 can be called start calibration phase jointly, be out
Preparation flow after machine, after preparation flow that can be after powering terminates, it is operated the transmitting of data.
The control method of rf terminal can also include in the embodiment of the present invention：
Radio frequency calculation is carried out during the emitter is operated data transmitting, while using the operational data
Method training, antenna tuning control and/or Power Control.Wherein：
The result of the RF algorithms training is used for the data for correcting the rf terminal transmitting.RF algorithms are trained with opening
Machine calibration phase it is similar, but utilize be emitter real time emission operational data.
The antenna tuning control includes：Transmitting of the transmitting detection means to the emitter after control compensation
Signal is detected, and the signal obtained according to detection configures antenna tuner.The up of emitter real time emission can be utilized
Signal carries out antenna tuner, specifically, the signal power received can be counted, judges whether to need by antenna tuning algorithm
Adjust antenna tuner.
The Power Control includes：The transmitting that the emitter is detected using the transmitting detection means after compensation is believed
Number, to carry out closed loop power's control to launch terminal.
The transmission signal of the emitter can be emitter real time emission operational data, can be specifically up letter
Number.RF FEEDBACK receiver can count the signal work(received by second test point P2 (referring to Fig. 6) coupling firing signal
Rate, according to certain transmission power control algorithm, closed loop power's control is carried out to emitter.
In specific implementation, transmitting detection means can be given tacit consent under emitter working condition not to be started.Selection starts certain
, can be by way of the cycle triggers or event triggers, in some function of specific time triggered when One function.Examine
Consider economize on electricity demand, after the completion of a certain function, transmitting detection means can enter sleep state.
In mobile communication terminals, the emitter working time with subframe (SubFrame, SF) or time slot (slot) for unit.
In embodiments of the present invention, transmission power control can be using 1 subframe or multiple subframes as unit periodic triggers.RF algorithms
Training and antenna tuner are controlled using more subframes as unit periodic triggers.When terminal detects external environment change, example
Such as when detecting that transmitter gain adjustment or RF algorithms update, event triggering RF algorithms training or antenna can be selected
Tuner control, such as detect transmitter gain adjustment or RF algorithms update when, triggering RF algorithms training or
Antenna tuner controls.
After start calibration is completed, emitter can also be in idle condition, i.e., the non-shape for being operated data transmission
State, the control method of rf terminal can also include in the embodiment of the present invention：
In the idle phase of the emitter, the cycle is triggered to the calibration for launching detection means, to the transmitting
The calibration of device and/or RF algorithms training；Wherein, the result of the RF algorithms training is used to launch the emitter
Data carry out predistortion.
Rf terminal is economize on electricity, and radio frequency chip and radio-frequency devices can be controlled to enter sleep shape in the case of no business
State, discontinuous reception (DRX) cycle may be used as the tracing detection to radio frequency sending set.In the idle rank of the emitter
Section, transmitting detection means can be by way of time-sharing multiplexs, to the calibration for launching detection means, to the emitter
Calibration and/or RF algorithms training.
In the embodiment of the present invention, after rf terminal start, transmitting detection means is calibrated first, according to described
Transmitting detection means is calibrated the imperfection of the obtained calibration result compensation transmitting detection means, to detection means
After compensating, reuse the transmitting detection means after compensation and the emitter is calibrated, so as to avoid
Introducing the error of transmitting detection means itself so that transmitting detection means is more accurate to the testing result of emitter, and then
It can make it that the non-ideal type compensation to emitter is more accurate, can further lift the accurate of emitter data transmitting
Property.
The embodiment of the present invention also provides a kind of control device of rf terminal, and its structural representation is referring to Fig. 9.
The rf terminal can include emitter and transmitting detection means, and the control device can include：Transmitting
Testing calibration unit 91, suitable for being calibrated to the transmitting detection means, to obtain calibration result；Transmitting detection compensating unit
92, suitable for the imperfection according to the result compensation transmitting detection means calibrated to the transmitting detection means；Hair
Alignment unit 93 is penetrated, is adapted in use to the transmitting detection means after compensation to calibrate the emitter, with to described
The imperfection of the data transmitting of emitter compensates.
In specific implementation, the transmitting detection compensating unit 92 is suitable to calibrate according to the transmitting detection means
Result configuration it is described transmitting detection means digital front-end, with compensate it is described transmitting detection means imperfection.
In specific implementation, the transmitting detection means is used for the multiple test points for detecting the emitter；The hair
The data flow that the transmitting detection means that alignment unit 93 is adapted in use to after compensation is launched according to data is penetrated progressively to obtain not
With the signal of test point, to be repeatedly gradually completing the calibration to the emitter；
The calibration being repeatedly gradually completing to the emitter includes：The data flow launched every time according to data obtains
Take after the signal of preceding test point, flowed to according to the complete paired data of the signal obtained in preceding test point in the school of preceding test point
Standard, and the emitter of stating is compensated according to the calibration result in preceding test point；Data flow is rear next time
The calibration of test point be based on compensation after emitter carry out.
In specific implementation, the emitter can include radio frequency sending set, power amplifier and radio-frequency front-end, institute
The input for stating power amplifier is connected to the radio frequency sending set, and the output end of the power amplifier is connected to the radio frequency
Front end, the structural representation of the transmitting calibration unit 93 may refer to Figure 10, including：Radio frequency sending set alignment unit 931, fit
In the signal for controlling the transmitting detection means to detect the radio frequency sending set output end, the radio frequency according to test result calibration
Emitter, to compensate the imperfection of the radio frequency sending set；RF algorithms training unit 932, suitable for controlling to the radio frequency
Emitter after emitter compensates launches test signal, and controls described in the transmitting detection means detection after compensation
The test point of power amplifier output, to carry out RF algorithms training, the result of the RF algorithms training is used for described
The data of emitter transmitting carry out predistortion.
In specific implementation, the control device of rf terminal can also include emission process control unit, suitable for described
During emitter is operated data transmitting, while RF algorithms training, antenna tune are carried out using the operational data
Humorous control and/or Power Control；Wherein：
The result of the RF algorithms training is used for the data for correcting the rf terminal transmitting；
The antenna tuning control includes：Transmitting of the transmitting detection means to the emitter after control compensation
Signal is detected, and the signal obtained according to detection configures antenna tuner；
The Power Control includes：The transmitting that the emitter is detected using the transmitting detection means after compensation is believed
Number, to carry out closed loop power's control to launch terminal.
In specific implementation, the control device of rf terminal can also include emission process control unit, idle phase control
Unit processed, suitable for the idle phase in the emitter, the cycle is triggered to the calibration for launching detection means, to the hair
The calibration of injection device and/or RF algorithms training；Wherein, the result of the RF algorithms training is used to send out the emitter
The data penetrated carry out predistortion.
In specific implementation, the transmitting testing calibration unit 91 can include：
Test signal control unit, suitable for controlling the rf terminal to produce original test signal, the original test letter
Number from it is described transmitting detection means access test point one end via it is described transmitting detection means miscellaneous part, reach the hair
Penetrate the Signal Processing Element of detection means；
Calibration computing, suitable for controlling the Signal Processing Element of the transmitting detection means to be believed according to the original test
Number and it is described reach it is described transmitting detection means Signal Processing Element signal, to it is described transmitting detection means calibrate.
In specific implementation, the original test signal is the sine wave of predeterminated frequency, and the predeterminated frequency is according to
Working frequency, offset and the bandwidth of rf terminal determine.
In specific implementation, the transmitting testing calibration unit is at least one of following suitable for calibrating：Direct current offset, IQ are not
Balance, nonlinear gain, frequency response.
In specific implementation, the transmitting calibration unit is at least one of following suitable for calibrating：Outgoing carrier leakage, IQ are not
Balance, nonlinear gain, frequency response.
In specific implementation, it is described transmitting testing calibration unit and the transmitting calibration unit be suitable to different frequencies,
Under bandwidth or gain, the transmitting detection means and the transmitting detection means are calibrated respectively.
It will be appreciated by persons skilled in the art that to RF FEEDBACK receiver and penetrating detection means and calibrated and mended
During repaying, the signal obtained from test point can be combined, signal is obtained from sampled point, the setting of test point and sampled point can
To need to set according to different calibration items and different scenes.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in a computer-readable recording medium, storage
Medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, this is not being departed from
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (22)
1. a kind of control method of rf terminal, the rf terminal includes emitter and transmitting detection means,
The transmitting detection means is used for the test point for detecting the emitter, it is characterised in that the control method includes：
After rf terminal start, the transmitting detection means is calibrated, to obtain calibration result；
According to the non-ideal of the calibration result compensation transmitting detection means for being calibrated to obtain to the transmitting detection means
Property；
The emitter is calibrated using the transmitting detection means after compensation, with the data to the emitter
The imperfection of transmitting compensates.
2. the control method of rf terminal according to claim 1, it is characterised in that carried out to the transmitting detection means
Calibration includes：
Rf terminal produces original test signal, and the original test signal accesses the one of test point from the transmitting detection means
End reaches the Signal Processing Element for launching detection means via the miscellaneous part of the transmitting detection means；
The Signal Processing Element of the transmitting detection means detects according to the original test signal and the arrival transmitting
The signal of the Signal Processing Element of device, the transmitting detection means is calibrated.
3. the control method of rf terminal according to claim 2, it is characterised in that the original test signal is default
The sine wave of frequency, the predeterminated frequency determine according to the working frequency, offset and bandwidth of the rf terminal.
4. the control method of rf terminal according to claim 1, it is characterised in that the basis detects to the transmitting
The imperfection for the result compensation transmitting detection means that device is calibrated includes：Enter according to the transmitting detection means
The feedback reception digital front-end of the result configuration transmitting detection means of row calibration, to compensate the non-of the transmitting detection means
Desirability.
5. the control method of rf terminal according to claim 1, it is characterised in that the transmitting detection means is used to examine
Survey multiple test points of the emitter；
The transmitting detection means using after compensation carries out calibration to the emitter to be included：Use the institute after compensation
The signal that data flow launch according to data of transmitting detection means progressively obtains different test points is stated, is gradually completing pair with multiple
The calibration of the emitter；
The calibration being repeatedly gradually completing to the emitter includes：
Every time according to data transmitting data flow obtain after the signal of preceding test point, according to it is described preceding test point obtain
The complete paired data of signal flows to the calibration in preceding test point, and states transmitting to described according to the calibration result in preceding test point
Device compensates；What the emitter after data flow is based on compensation in the calibration of rear test point next time was carried out.
6. the control method of rf terminal according to claim 1, it is characterised in that the emitter is sent out including radio frequency
Machine, power amplifier and radio-frequency front-end are penetrated, the input of the power amplifier is connected to the radio frequency sending set, the work(
The output end of rate amplifier is connected to the radio-frequency front-end, and the transmitting detection means using after compensation is to the transmitting
Device, which carries out calibration, to be included：
The transmitting detection means detects the signal of the radio frequency sending set output end, and radio frequency is sent out according to test result calibration
Machine is penetrated, to compensate the imperfection of the radio frequency sending set；
The test point of the power amplifier output is detected using the transmitting detection means after compensation, to carry out radio frequency calculation
Method is trained, and the result of the RF algorithms training is used to carry out predistortion to the data of emitter transmitting.
7. the control method of rf terminal according to claim 1, it is characterised in that also include：In the emitter
During being operated data transmitting, at the same using the operational data carry out RF algorithms training, antenna tuning controls and/
Or Power Control；Wherein：
The result of the RF algorithms training is used for the data for correcting the rf terminal transmitting；
The antenna tuning control includes：Control transmission signal of the transmitting detection means after compensation to the emitter
Detected, the signal obtained according to detection configures antenna tuner；
The Power Control includes：The transmission signal of the emitter is detected using the transmitting detection means after compensation,
To carry out closed loop power's control to launch terminal.
8. the control method of rf terminal according to claim 1, it is characterised in that also include：In the emitter
Idle phase, the cycle triggering to it is described transmitting detection means calibration, the calibration to the emitter and/or RF algorithms
Training；Wherein, the result of the RF algorithms training is used to carry out predistortion to the data of emitter transmitting.
9. the control method of rf terminal according to claim 1, it is characterised in that described to the transmitting detection means
Carrying out calibration includes the following at least one of calibration：Direct current offset, IQ imbalances, nonlinear gain, frequency response.
10. the control method of rf terminal according to claim 1, it is characterised in that described using described after compensation
At least one of transmitting detection means is calibrated to the emitter, including below calibration：Outgoing carrier leakage, IQ are uneven
Weighing apparatus, nonlinear gain, frequency response.
11. the control method of rf terminal according to claim 1, it is characterised in that in different frequencies, bandwidth or increasing
Under benefit, the transmitting detection means and the transmitting detection means are calibrated respectively.
12. a kind of control device of rf terminal, the rf terminal includes emitter and transmitting detection means, and its feature exists
In the control device includes：
Launch testing calibration unit, suitable for being calibrated to the transmitting detection means, to obtain calibration result；
Transmitting detection compensating unit, suitable for being detected according to the result compensation transmitting calibrated to the transmitting detection means
The imperfection of device；
Transmitting calibration unit, it is adapted in use to the transmitting detection means after compensation to calibrate the emitter, with right
The imperfection of the data transmitting of the emitter compensates.
13. the control device of rf terminal according to claim 12, it is characterised in that the transmitting detection compensating unit
Suitable for the digital front-end according to the result configuration transmitting detection means calibrated to the transmitting detection means, with compensation
The imperfection of the transmitting detection means.
14. the control device of rf terminal according to claim 12, it is characterised in that the transmitting detection means is used for
Detect multiple test points of the emitter；The transmitting calibration unit is adapted in use to the transmitting detection means after compensation
The data flow launched according to data progressively obtains the signal of different test points, to be repeatedly gradually completing to the emitter
Calibration；
The calibration being repeatedly gradually completing to the emitter includes：
Every time according to data transmitting data flow obtain after the signal of preceding test point, according to it is described preceding test point obtain
The complete paired data of signal flows to the calibration in preceding test point, and states transmitting to described according to the calibration result in preceding test point
Device compensates；What the emitter after data flow is based on compensation in the calibration of rear test point next time was carried out.
15. the control device of rf terminal according to claim 12, it is characterised in that the emitter includes radio frequency
Emitter, power amplifier and radio-frequency front-end, the input of the power amplifier is connected to the radio frequency sending set, described
The output end of power amplifier is connected to the radio-frequency front-end, and the transmitting calibration unit includes：
Radio frequency sending set alignment unit, suitable for controlling the transmitting detection means to detect the letter of the radio frequency sending set output end
Number, the radio frequency sending set according to test result calibration, to compensate the imperfection of the radio frequency sending set；
RF algorithms training unit, the emitter transmitting test letter after being compensated suitable for control to the radio frequency sending set
Number, and the test point of the transmitting detection means detection power amplifier output after compensation is controlled, to carry out radio frequency
Algorithm for Training, the result of the RF algorithms training are used to carry out predistortion to the data of emitter transmitting.
16. the control device of rf terminal according to claim 12, it is characterised in that also controlled including emission process single
Member, radio frequency calculation is carried out during being operated data transmitting in the emitter, while using the operational data
Method training, antenna tuning control and/or Power Control；Wherein：
The result of the RF algorithms training is used for the data for correcting the rf terminal transmitting；
The antenna tuning control includes：Control transmission signal of the transmitting detection means after compensation to the emitter
Detected, the signal obtained according to detection configures antenna tuner；
The Power Control includes：The transmission signal of the emitter is detected using the transmitting detection means after compensation,
To carry out closed loop power's control to launch terminal.
17. the control device of rf terminal according to claim 12, it is characterised in that also controlled including idle phase single
Member, suitable for the idle phase in the emitter, cycle triggering fills to the calibration for launching detection means, to the transmitting
The calibration put and/or RF algorithms training；Wherein, the result of the RF algorithms training is used for emitter transmitting
Data carry out predistortion.
18. the control device of rf terminal according to claim 12, it is characterised in that the transmitting testing calibration unit
Including：
Test signal control unit, suitable for controlling the rf terminal to produce original test signal, the original test signal from
One end of the transmitting detection means access test point reaches the transmitting inspection via the miscellaneous part of the transmitting detection means
Survey the Signal Processing Element of device；
Calibration computing, suitable for controlling the Signal Processing Element of the transmitting detection means according to the original test signal and
The signal of the Signal Processing Element for reaching the transmitting detection means, is calibrated to the transmitting detection means.
19. the control device of rf terminal according to claim 18, it is characterised in that the original test signal is pre-
If the sine wave of frequency, the predeterminated frequency determines according to the working frequency, offset and bandwidth of the rf terminal.
20. the control device of rf terminal according to claim 12, it is characterised in that the transmitting testing calibration list
Member, it is at least one of following suitable for calibrating：Direct current offset, IQ imbalances, nonlinear gain, frequency response.
21. the control device of rf terminal according to claim 12, it is characterised in that the transmitting calibration unit, fit
It is at least one of following in calibration：Outgoing carrier leakage, IQ imbalances, nonlinear gain, frequency response.
22. the control device of rf terminal according to claim 12, it is characterised in that the transmitting testing calibration unit
It is suitable to the transmitting calibration unit under different frequencies, bandwidth or gain, respectively to the transmitting detection means and described
Transmitting detection means is calibrated.
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| CN201610597617.5A CN107659364A (en) | 2016-07-26 | 2016-07-26 | A kind of control method and device of rf terminal |
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| CN201610597617.5A CN107659364A (en) | 2016-07-26 | 2016-07-26 | A kind of control method and device of rf terminal |
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| CN113541827A (en) * | 2020-04-13 | 2021-10-22 | 华为技术有限公司 | Calibration method, device and system |
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Address after: 100089 18 / F, block B, Zhizhen building, No.7, Zhichun Road, Haidian District, Beijing Applicant after: Beijing Ziguang zhanrui Communication Technology Co.,Ltd. Address before: 100084, Room 516, building A, Tsinghua Science Park, Beijing, Haidian District Applicant before: BEIJING SPREADTRUM HI-TECH COMMUNICATIONS TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180202 |