CN1489406A - Automatic correction compensation system and method for mobile terminal - Google Patents
Automatic correction compensation system and method for mobile terminal Download PDFInfo
- Publication number
- CN1489406A CN1489406A CNA021313946A CN02131394A CN1489406A CN 1489406 A CN1489406 A CN 1489406A CN A021313946 A CNA021313946 A CN A021313946A CN 02131394 A CN02131394 A CN 02131394A CN 1489406 A CN1489406 A CN 1489406A
- Authority
- CN
- China
- Prior art keywords
- portable terminal
- compensation
- frequency
- read
- computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
There are theoretical and actual index differences of analog circuit in mobile terminal hardware caused by factors such as non-linear, inconsistency and frequency characteristic etc. For compensating the differences, the invented method adjusts receiver of mobile terminal through computer and normative testing instrument. Running program of automatic calibration and comopensation control, computer controls the instrument to generate signal of parameter to be adjusted and compensated, and the signal is sent to the mobile terminal to be tested. The computer controls the mobile terminal, carries out automatic measurement, as well as calculates comopensation data, generates table of calibration data, and stores the table in memory of mobile terminal. When working, based on intensity indicator of receiving signal of automatic gain control module, the mobile terminal carries out compensation by using stored compensation data and table.
Description
Technical field
The present invention relates to the mobile communication technology field, is a kind of method and system that mobile communication system is calibrated, compensated portable terminal that is used for.
Background technology
The basic structure of portable terminal hardware is: artificial circuit part is controlled by frequency control circuit, power control circuit and receiver gain control circuit by the digital circuit part.The digital circuit of each portable terminal partly be can guarantee conforming, but because the inconsistency of analogue device, even adopt the device of identical circuit design and same model, also can cause the inconsistency of artificial circuit part, its actual input-output characteristic is also inconsistent.Therefore, even the digital circuit of portable terminal partly adopts identical control data, because this inconsistency of artificial circuit part will inevitably cause different portable terminals to have different output characteristic.For the Digital Circuit Control order that keeps each portable terminal conforms to the response results of its analog circuit, just must in digital circuit, this inconsistency to analog circuit calibrate and compensate.
To because the calibration and the compensation of this inconsistency that causes of analog hardware circuit, conventional method commonly used is might situation carry out a test to each portable terminal according to institute, then according to test result, adjust the output control data of digital circuit, be consistent with the control data of assurance digital circuit output and the control result of expection.When the portable terminal of calibrating, compensating is several or tens, the method that adopts this elder generation manually to test, calibrate, compensate according to test result then, also not losing is a kind of efficient ways.But when the portable terminal that need calibrate, compensate formed in batches, then there was great irrationality in this method of manually testing one by one, calibrate, compensating: the one, and compensation for calibrating errors efficient is lower; The 2nd, in the process of manual calibration compensation, can cause the compensation for calibrating errors result unreliable because of people's participation factor.
Summary of the invention
The objective of the invention is to propose a kind of system and method for portable terminal automatic correction compensation, can carry out the Testing And Regulating compensation to each portable terminal automatically not having under the artificial situation of intervening.When improving portable terminal compensation for calibrating errors automaticity, can also avoid because the unreliability and the inconsistency of the compensation for calibrating errors that human factor is brought.
The notion of calibration involved in the present invention is: when also not setting up correct offset data in the portable terminal internal memory (for example in manufacture process), need measure the actual output result of portable terminal and expection output result's difference with reference instrument, form offset data, then offset data is stored in the internal memory of portable terminal, be used for portable terminal and when operate as normal, access the corresponding compensation data and compensate according to actual conditions.
The notion of compensation involved in the present invention is: after mobile terminal-opening, from internal memory, read offset data, utilize certain algorithm computation to go out controlled quentity controlled variable to analog circuit, with according to the actual reception situation this controlled quentity controlled variable is compensated, portable terminal is consistent to the working control amount of analog circuit and the controlled quentity controlled variable of expection.
The technical scheme that realizes the object of the invention is such: a kind of system of portable terminal automatic correction compensation is characterized in that comprising:
Computer and the accurate tester of a station symbol, computer connects standard testing instrument and portable terminal to be measured, and the standard testing instrument connects portable terminal to be measured;
Computer is by operation automatic correction compensation control program, and the control criterion tester produces the signal of compensating parameter to be calibrated, and sends to portable terminal to be measured; The computer control portable terminal, automatically measure, calculate offset data, with generation calibration data form, be stored in the internal memory of portable terminal, utilize this offset data and correction card portable terminal to be carried out the control data compensation of actual parameter for portable terminal.
Described computer is to control described standard testing instrument by gpib interface; Described computer is read and write preservation by network interface or other port of portable terminal to portable terminal to be measured.
The signal of described compensating parameter to be calibrated is the signal that can cover whole portable terminal range of receiving, and reserves surplus on maximum and minimum value.
The technical scheme that realizes the object of the invention still is such: a kind of method of portable terminal automatic correction compensation is characterized in that:
Comprise to the calibration steps of portable terminal with to the compensation method of portable terminal when the practical application;
Described calibration steps to portable terminal may further comprise the steps:
A. control to the different test volume of portable terminal input;
B. under different test volumes, read portable terminal digital control amount to analog circuit when different test volume;
C. write down different test volumes and corresponding digital control amount, storage is in the internal memory of portable terminal by way of compensation;
It is described that compensation method when the practical application may further comprise the steps to portable terminal:
D. the CPU of portable terminal is read offset data from internal memory, with approximate data offset data is carried out the approximation computing, obtains the approximation result;
E. read the working control amount of current mobile terminal, and carry out match, the real figure controlled quentity controlled variable after obtaining to compensate analog circuit with the approximation result to analog circuit.
Described to portable terminal calibration steps and to portable terminal the compensation method when the practical application is to portable terminal receiver gain control compensation for calibrating errors method;
Described steps A, further comprise: computer run portable terminal receiver gain control calibration procedure, comprise by the different capacity P of control criterion tester when portable terminal is imported same operating frequency, with have the same power of different operating frequency F by the control criterion tester to portable terminal input, carry out the calibration of gamma correction and frequency characteristic respectively;
Described step B is the controlled quentity controlled variable A of portable terminal automatic gain control module when being read the controlled quentity controlled variable V of the automatic gain control module of portable terminal when the different capacity P and being read different operating frequency F by computer;
Described step C obtains offset data, it is the corresponding formation first calibration data form of different capacity P that to read with controlled quentity controlled variable V, write in the portable terminal internal memory, corresponding with the different operating frequency F that will read with controlled quentity controlled variable A, difference DELTA V between the received signal intensity of portable terminal is indicated under the received signal intensity indication that calculates portable terminal under the different frequency and the standard frequency, with different operating frequency F and the corresponding second calibration data form that forms of difference DELTA V thereof, write in the portable terminal internal memory;
Described step D further comprises: the CPU of portable terminal is read corresponding different capacity P and first correction card of controlled quentity controlled variable V from internal memory; Utilize the piecewise linear approximation algorithm P and corresponding V to be carried out piecewise linear approximation calculating, the result after the acquisition broken lineization; Result after the broken lineization is write in the digital baseband processor of portable terminal;
Described step e further comprises: the CPU of portable terminal is read the controlled quentity controlled variable of current automatic gain control module; Find the broken line at this controlled quentity controlled variable place the result after broken lineization, the received signal strength indicator value after the acquisition nonlinear compensation; The CPU of portable terminal is read the operating frequency of current mobile terminal; By inquiring about second correction card, obtain difference DELTA V corresponding under this operating frequency, with the received signal strength indicator value after the nonlinear compensation and this difference addition, the acquisition nonlinear compensation adds the working control amount of the automatic gain control module after the frequency compensation.
The described piecewise linear approximation that carries out calculates, and comprising: select counting of corresponding formation between power P and controlled quentity controlled variable V according to the quality of linear characteristic; The point of selecting is linked to be broken line; By described piecewise linear approximation algorithm this broken line is carried out piecewise linear approximation and calculate, the result after the acquisition broken lineization;
Find the broken line at this controlled quentity controlled variable place the described result after broken lineization, adopt sort algorithm to seek whole broken lines; Utilize power P 1, P2 and corresponding controlled quentity controlled variable V1, the V2 of this broken line two-end-point that searches out, calculate the received signal strength indicator value after the described acquisition nonlinear compensation.
Difference DELTA V between the received signal intensity of portable terminal is indicated under the described received signal intensity indication that calculates portable terminal under the different frequency and the standard frequency, comprise: according to the different operating frequency of gain with the speed setting portable terminal of frequency change, the interval of operating frequency can equate or be unequal; Respectively according to the automatic gain control module output variable under the operating frequency F, on the control voltage of this operating frequency and output power curve, find corresponding received signal intensity indication, deduct the received signal intensity indication of portable terminal under the standard frequency again and obtain.
Between described step D and step e, increase by one by computer-controlled time-delay step.
Described offset data is write in the portable terminal internal memory, comprises earlier offset data being kept in the internal memory of portable terminal, again described computer hold instruction effectively after, the offset data that is kept in the internal memory is saved among the FLASH.
The invention provides a kind of hardware automatic correction compensation scheme of portable terminal.At Analog Baseband in the portable terminal hardware circuit and the analog circuit in the radio frequency processing, because theory that factors such as non-linear, inconsistency, frequency characteristic cause and actual index difference, by automatic correction compensation control program on the operation computer, through gpib interface control tester, again by communications of Mobile Terminals mouth control portable terminal, automatically measure the difference that obtains portable terminal and reference instrument, draw correction card according to this difference, compensate with the data of this correction card to portable terminal reality.
The beneficial effect of portable terminal automatic correction compensation System and method for of the present invention is:
The whole compensation for calibrating errors process of each portable terminal can be controlled automatically and carry out, and helps improving the operating efficiency of portable terminal compensation for calibrating errors;
Owing to adopt computer controlled automatic, can avoid because the inaccuracy and the inconsistency of the compensation for calibrating errors that manual calibration and compensation are introduced;
Owing to adopt computer controlled automatic calibration and compensation process, can realize than the higher precision of manual calibration compensation;
Realize simply, only need to adopt the tester that is complementary with the compensation for calibrating errors parameter, just can finish compensation for calibrating errors, do not need to use the complicated huge test macro in traditional mobile terminal test this parameter of portable terminal;
Control the automatic correction compensation process owing to adopt computer program, can carry out compensation for calibrating errors at various parameters in all cases neatly, avoided in the manual calibration compensation, changed a compensation for calibrating errors parameter and just need rebuild new test environment and use corresponding compensation for calibrating errors means.
Technical scheme of the present invention is primarily aimed at the inconsistency of the non-linear and frequency characteristic of mobile-terminal simulator spare and makes, but System and method for of the present invention is equally applicable to compensate and calibrate owing to the inconsistency of other parameters such as temperature.
Description of drawings
Fig. 1 be adopt broken line closely the plan method carry out the schematic diagram of nonlinear compensation;
Fig. 2 is the compensation method schematic diagram of frequency characteristic;
Fig. 3 is a method of utilizing piecewise linear approximation, determines the schematic diagram of input signal strength Pi according to gain controlling amount Vi;
Fig. 4 is a portable terminal receiver gain compensation FB(flow block);
Fig. 5 is the system configuration schematic diagram that portable terminal is calibrated automatically;
Fig. 6 is the automatic correction compensation FB(flow block) to the control of portable terminal receiver gain.
Embodiment
In the portable terminal, it is many needing the parameter of compensation, the present invention is that example describes with the gain controlling compensation for calibrating errors of portable terminal receiver mainly, but technical scheme of the present invention is equally applicable to the compensation for calibrating errors in the control procedures such as relevant FREQUENCY CONTROL, power control in the portable terminal receiver.
In portable terminal, the process that digital quantity is converted to analog control voltage is linear, that is to say, the controlled quentity controlled variable of digital circuit output is linear corresponding with passing through between D/A switch (D/A) analog control voltage afterwards.But the final purpose of digital circuit output control also is not only and is produced this analog control voltage, but by the output variable of the analog circuit after this analog control voltage effect.When the characteristic relation between analog control voltage and Be Controlled analog circuit was non-linear relation, the relation between the output variable of digital control amount and Be Controlled analog circuit had also just become nonlinear.Obtain linear control as a result the time when we wish output at the Be Controlled device, just must when digital control amount is exported, just carry out nonlinear compensation.
The present invention adopts the method for piecewise linear approximation to carry out nonlinear compensation.Preferably under the situation, can adopt several points to carry out piecewise linear approximation in linearity, under the bad situation of linearity, will strengthen broken line density by increasing.As shown in fig. 1, transverse axis represents to control voltage, and the longitudinal axis is represented power output, selects 10 control voltages, obtains corresponding 10 power outputs, and point is connected with point, forms broken line.Utilize this broken line just can try to achieve control voltage when wanting power output.
Equally, because the amplitude-frequency characteristic of the passband of the transmitter and receiver of portable terminal can not be accomplished smooth fully, that is to say that under the identical situation of the controlled quentity controlled variable of numerical portion output, the gain meeting of transmitter and receiver changes along with the difference of operating frequency.Offset this and change, just require numerical portion in the output controlled quentity controlled variable, carry out suitable adjustment, frequency characteristic is compensated according to current operating frequency.
Nonlinear compensation adds frequency characteristic compensation, form a two-dimensional function, can increase the complexity of compensation, for simplifying compensation process, technical solution of the present invention is decomposed into two incoherent compensation process with nonlinear compensation and frequency characteristic compensation, as long as ERROR CONTROL just can be realized goal of the invention in allowed limits.
The present invention realizes that the method for frequency characteristic compensation is: at first a standard frequency point, for example carry out gamma correction under first working frequency points, find a more typical yield value; Keep this yield value constant then, adjust working frequency points, record the difference value between gain under each working frequency points, and these deviates (calibrator quantity) are left in the internal memory (FLASH); When carrying out gain controlling, all a calibrator quantity is added or deducted to basis working frequency points at that time at every turn.
Fig. 2 illustrates this frequency compensated method, and transverse axis represents to control voltage, and the longitudinal axis is represented power output.When carrying out frequency compensation, because the deviation ratio that frequency characteristic causes is less, thus do not adopt the method for piecewise linear approximation to compensate, but adopt the method for segmentation to compensate.Measuring frequency deviation (power output) under some control voltage for example, calibrated n working frequency points, be F1-Fn (frequency 1 is to frequency n) from low to high, as four among figure control voltage-output power curves, respectively corresponding output power back off amount Δ P1-Δ Pn, if the standard frequency point of nonlinear compensation is F1, Δ P1=0 so.Frequency compensated process is exactly: judge that earlier present working frequency points between which two frequency, determines Δ Pi, add Δ Pi (i is any one among the n, and Δ Pi can just can bear) then on the basis of nonlinear compensation.Can cover whole frequency by the mode of measuring n frequency.
The receiver gain control of portable terminal is a closed-loop control process of portable terminal inside, after the mobile terminal-opening, receiver can be automatically locked on the suitable working frequency points, and the purpose of receiver gain control compensation is the accurate calculating that is used for received signal intensity indication (RSSI:Receive signal strength indicator).
The present invention with receiver gain control compensation process be divided into two the step finish: nonlinear compensation and frequency compensation.
The nonlinear compensation process:
According to the result of automatic test, the dateout of working control and the control result data of expection, can obtain the compensation for calibrating errors tables of data, this table is stored in the internal memory or FLASH of portable terminal.List between receiver gain controlled quentity controlled variable (Vo-Vn) and respective receiver real input signal intensity (Po-Pn) array relation one to one in the tables of data:
| The receiver gain controlled quentity controlled variable | Receiver real input signal intensity |
| V0 | P0 |
| V1 | P1 |
| V2 | P2 |
| V3 | P3 |
| …… | …… |
| Vn | Pn |
(Vo-Vn) in the table is portable terminal receiver gain controlled quentity controlled variable, and Po-Pn is the signal strength signal intensity of controlled quentity controlled variable receiver input when being Vo-Vn, and this signal strength signal intensity is come out by apparatus measures in calibration process.In order to simplify calibration process, save the FLASH space, the quantity of Vo-Vn can not be too many, and preferably variable, generally adopts tens points to carry out curve fitting and just can guarantee enough calibration accuracies.
When carrying out received signal intensity indication (RSSI) calculating, the digital control amount of portable terminal digital baseband signal processing section output is known, and by the output of automatic gain control (AGC:Automatic Gaincontrol) module.The work that need do is exactly to calculate corresponding input signal strength according to this gain controlling amount.When the controlled quentity controlled variable Vi (any one gain controlling amount) of digital baseband signal processing section output was just in time in form, RSSI was exactly the pairing Pi of Vi in this form (input signal strength corresponding with Vi) so; If Vi not in form, so just need utilize the method for piecewise linear approximation to calculate the pairing Pi of this Vi.
Referring to Fig. 3, utilize the method for piecewise linear approximation shown in the figure, Vi determines input signal strength Pi according to the gain controlling amount.Before calculating, at first need to find out the position (one by one compare, get rid of determine with Vi and Vo-Vn) of Vi place broken line with sort algorithm, if the ordering result calculated is determined Vi between V1, P1 and V2, P2, the computing formula of Pi is so:
Figure hollow core arrow indication is that broken line is closely intended error.
The frequency compensation process:
Because nonlinear compensation is carried out on a standard frequency point, thus when portable terminal is operated in other frequency, will be according to the side-play amount that draws in the calibration process, the result that nonlinear compensation is drawn carries out second compensation again.
The compensation and the nonlinear compensation of frequency characteristic are similar, all are to measure several standard points one earlier automatically, calculate compensation rate according to these several standard points then.Frequency compensation adopts the method for segmentation to carry out.
For example having calibrated 6 frequencies altogether, is F1-F6 from low to high, respectively corresponding compensation rate Δ V1-Δ V6, if the standard frequency point of nonlinear compensation is F1, and Δ V1=0 so.Frequency compensated process is exactly: judge that earlier present working frequency points between which two frequency, adds Δ Vi (Δ Vi can just can bear) then on the basis of nonlinear compensation.For receiver, frequency compensated Δ V is actually the compensation rate of received signal intensity RSSI.
Referring to Fig. 4, the flow process of portable terminal receiver gain control compensation is to the nonlinear compensation process of above-mentioned receiver gain control and the summation of frequency compensation process.
Step 48 reports RSSI.Above-mentioned steps is finished the frequency characteristic compensation of receiver gain control.
Step 49 is carried out nonlinear compensation process and frequency compensation process that next receiver automatic gain is controlled the controlled quentity controlled variable (if any) of (AGC) module output, returns step 43 to 48 execution.
Be controlled to be example with the receiver gain of Wideband Code Division Multiple Access (WCDMA) (WCDMA) portable terminal below and further specify implementation process of the present invention.
Referring to Fig. 5, according to the present invention, portable terminal automatic correction compensation system comprises: 51, Wideband Code Division Multiple Access (WCDMA) (WCDMA) signal sources of a control computer (PC, LabView platform) 52 and the portable terminal 53 that is calibrated compensation.Its annexation and calibration process are as follows:
Whole calibration process carries out under computer 51 controls automatically.Computer 51 produces test signal and imports portable terminal 53 by radio frequency cable by gpib interface control WCDMA signal source 52 (signal source is consistent with parameter to be calibrated); Computer 51 is controlled portable terminal 53 by the network interface (perhaps other communication interface) of portable terminal 53 simultaneously.Computer 51 usefulness LabView write calibration procedure, and the control command of portable terminal 53 receiving computers 51 is read and write work such as preservation accordingly.
By the automatic correction compensation control program on the operation computer 51, the gpib interface control WCDMA signal source (reference instrument) of computer 51, with network interface or other port control portable terminal 53 by portable terminal, automatically measure the difference that obtains portable terminal 53 and WCDMA signal source (reference instrument), draw offset data according to this difference, and generation correction card, be stored in the internal memory or FALSH of portable terminal, just can utilize this correction card that portable terminal has been carried out actual compensation data.
Referring to Fig. 6, utilize the FB(flow block) of system shown in Figure 5 shown in the figure to the automatic calibration process of portable terminal receiver gain control.
Step 01: the control program of control computer sends an AGC (the automatic gain control module of receiver) calibration command to portable terminal, starts the AGC calibration module of portable terminal inside;
Step 02: the control program of control computer is to the used hardware version of mobile terminal enquiry, this function mainly considers if the portable terminal hardware platform of a plurality of versions, and the control computer may need to adopt different calibration procedures automatically according to the difference of hardware version;
Step 03,10,18: comprise to the judgement of gamma correction with to the judgement (according to the characteristic indication position) of frequency characteristic, if neither gamma correction is not again the frequency characteristic calibration then finishes this calibration, this step is mainly used in to be checked the legitimacy of automatic detection calibration process, validity, because according to the definition of calibration with compensation, ideal value and desired value can not differ greatly, when the result of test exceeds a border, just think that this time test is unusual; In the process of this judgement, portable terminal should be in wait state;
Step 04: carry out gamma correction, the control program of control computer in whole gamma correction process, keeps this working frequency points constant to the mobile terminal configuration working frequency points;
Step 05: the control computer is provided with the output signal form and the power output P of WCDMA signal source by gpib bus, and power output P is sent to portable terminal, and the distribution of calibration point is mainly controlled by the performance number of WCDMA signal source output signal.In calibration process, the power of WCDMA signal source not only will cover the effective range of receiving of whole portable terminal, and all will reserve surplus in maximum and minimum value, and this surplus generally can be got 3dB;
Step 06: because after various settings finished, various measurements needed just effective at regular intervals, so the program of portable terminal need wait for from the instruction of control computer and then down carry out that the size of time delay is controlled by the control computer;
Step 07: computer is read the control voltage V of portable terminal AGC.Owing to delayed time a period of time in step 06 in the backstage, so the AGC of portable terminal locks at this moment, the AGC controlled quentity controlled variable V of this moment is accurately;
Whether step 08: portable terminal need be waited for the instruction on backstage, the calibration point P, the V that measured in the past are saved in the internal memory, and the backstage can send the instruction of whether all data being preserved when gamma correction finishes, to preserve the point that all were calibrated;
Step 09: after all measurement points had all been surveyed, portable terminal was write into these calibration points P, V among the FLASH under computer instruction together; The each measurement, the control computer all will be issued portable terminal to the power of signal source, portable terminal is kept at this performance number P and its corresponding AGC controlled quentity controlled variable V in the internal memory earlier, after step 08 receives control computer effectively holds instruction, these data in the internal memory are saved among the FLASH of portable terminal again and go;
Step 11: for the calibration frequency characteristic, computer is necessary for the input power that portable terminal is provided with a benchmark, and in whole frequency calibration process, this power remains unchanged;
Step 12: the control computer is that portable terminal is provided with working frequency points F, and the interval between the calibration point not necessarily equates, can decide with the speed of frequency change according to gain;
Step 13: control time delay by the control computer, in this time delay process, portable terminal is in wait state;
Step 14: the controlled quentity controlled variable A that reads portable terminal AGC this moment;
Step 15: calculate RSSI under this frequency F and the difference DELTA V of the RSSI under the standard frequency point.Computational methods are as follows: the AGC controlled quentity controlled variable A with this frequency finds RSSI on control voltage voltage-output power curve, deduct actual RSSI (from the control computer, the power of WCDMA signal source being issued portable terminal) with this RSSI again, just can obtain this difference DELTA V.This difference can be on the occasion of, also can be negative value;
Step 16: the instruction of computer-controlled programs to be controlled such as portable terminal needs, whether calibration point frequency F that measured in the past and difference DELTA V are saved among the FLASH, the control computer-controlled program can send the instruction of preserving to portable terminal when the frequency characteristic calibration finishes;
Step 17: after all measurement points had all been surveyed, portable terminal was write into FLASH together to these calibration points-frequency F and difference DELTA V; The each measurement, portable terminal is kept at frequency F and its corresponding difference DELTA V earlier in the internal memory, by the time from computer hold instruction effectively after, the data in the internal memory are saved among the FLASH of portable terminal and go;
Step 18: after all sampling point test and calibration end, withdraw from the automatic calibration procedure of AGC.
For compensation process, mainly carry out the flow chart the same (referring to Fig. 5) of the flow chart of compensation and receiver gain compensation in portable terminal inside.
The present invention is the method and system that portable terminal is tested automatically, calibrated and compensates.Produce test signal and be sent to portable terminal to be measured by GPIB control tester with the control computer, control portable terminal to be measured with the control computer by network interface or other port, collect in the control computer with the data of tester output signal with to the control data of portable terminal and to handle, draw the compensation correction tables of data of portable terminal, write again among the FALSH of portable terminal.The inventive method is carried out nonlinear compensation and is carried out frequency compensation according to discrete method according to polygometry.During enforcement, portable terminal is required to be and cooperates test automatically, compensation and calibration, and corresponding test function is set.
Claims (11)
1. the system of a portable terminal automatic correction compensation is characterized in that comprising:
Computer and the accurate tester of a station symbol, computer connects standard testing instrument and portable terminal to be measured, and the standard testing instrument connects portable terminal to be measured;
Computer is by operation automatic correction compensation control program, and the control criterion tester produces the signal of compensating parameter to be calibrated, and sends to portable terminal to be measured; The computer control portable terminal, automatically measure, calculate offset data, with generation calibration data form, be stored in the internal memory of portable terminal, utilize this offset data and correction card portable terminal to be carried out the control data compensation of actual parameter for portable terminal.
2. the system of a kind of portable terminal automatic correction compensation according to claim 1 is characterized in that: described computer is to control described standard testing instrument by gpib interface; Described computer is read and write preservation by network interface or other port of portable terminal to portable terminal to be measured.
3. the system of a kind of portable terminal automatic correction compensation according to claim 1 is characterized in that: the signal of described compensating parameter to be calibrated is the signal that can cover whole portable terminal range of receiving, and reserves She's amount on maximum and minimum value.
4. the method for a portable terminal automatic correction compensation is characterized in that:
Comprise to the calibration steps of portable terminal with to the compensation method of portable terminal when the practical application;
Described calibration steps to portable terminal may further comprise the steps:
A. control to the different test volume of portable terminal input;
B. under different test volumes, read portable terminal digital control amount to analog circuit when different test volume;
C. write down different test volumes and corresponding digital control amount, storage is in the internal memory of portable terminal by way of compensation;
It is described that compensation method when the practical application may further comprise the steps to portable terminal:
D. the CPU of portable terminal is read offset data from internal memory, with approximate data offset data is carried out the approximation computing, obtains the approximation result;
E. read the working control amount of current mobile terminal, and carry out match, the real figure controlled quentity controlled variable after obtaining to compensate analog circuit with the approximation result to analog circuit.
5. the method for a kind of portable terminal automatic correction compensation according to claim 4 is characterized in that: described to portable terminal calibration steps and to portable terminal the compensation method when the practical application is to portable terminal receiver gain control compensation for calibrating errors method;
Described steps A further comprises: computer run portable terminal receiver gain control calibration procedure, by the different capacity P of control criterion tester when portable terminal is imported same operating frequency, carry out gamma correction;
Described step B is the controlled quentity controlled variable V that is read the automatic gain control module of portable terminal when the different capacity P by computer;
Described step C obtains offset data, is the corresponding formation first calibration data form with controlled quentity controlled variable V of different capacity P that will read, and writes in the portable terminal internal memory;
Described step D further comprises: the CPU of portable terminal is read corresponding different capacity P and first correction card of controlled quentity controlled variable V from internal memory; Utilize the piecewise linear approximation algorithm P and corresponding V to be carried out piecewise linear approximation calculating, the result after the acquisition broken lineization; Result after the broken lineization is write in the digital baseband processor of portable terminal;
Described step e further comprises: the CPU of portable terminal is read the controlled quentity controlled variable of current automatic gain control module; Find the broken line at this controlled quentity controlled variable place the result after broken lineization, obtain the received signal strength indicator value after the nonlinear compensation, be the working control amount of the automatic gain control module of nonlinear compensation.
6. the method for a kind of portable terminal automatic correction compensation according to claim 4 is characterized in that: described to portable terminal calibration steps and to portable terminal the compensation method when the practical application is to portable terminal receiver gain control compensation for calibrating errors method;
Described steps A further comprises: computer run portable terminal receiver gain control calibration procedure, have the same power of different operating frequency F by the control criterion tester to the portable terminal input, and carry out the frequency characteristic calibration;
Described step B is the controlled quentity controlled variable A of portable terminal automatic gain control module when reading different operating frequency F by computer;
Described step C obtains offset data, be that the different operating frequency F that will read is corresponding with controlled quentity controlled variable A, difference DELTA V between the received signal intensity of portable terminal is indicated under the received signal intensity indication that calculates portable terminal under the different frequency and the standard frequency, with different operating frequency F and the corresponding second calibration data form that forms of difference DELTA V thereof, write in the portable terminal internal memory;
Described step D, step e further comprise: the CPU of portable terminal is read the controlled quentity controlled variable of current automatic gain control module, calculates the current received signal of acquisition strength indicator value; The CPU of portable terminal is read the operating frequency of current mobile terminal, by inquiring about second correction card, obtain difference DELTA V corresponding under this operating frequency, with current received signal strength indicator value and this difference addition, the working control amount of the automatic gain control module after the acquisition frequency compensation.
7. the method for a kind of portable terminal automatic correction compensation according to claim 4 is characterized in that: described to portable terminal calibration steps and to portable terminal the compensation method when the practical application is to portable terminal receiver gain control compensation for calibrating errors method;
Described steps A, further comprise: computer run portable terminal receiver gain control calibration procedure, comprise by the different capacity P of control criterion tester when portable terminal is imported same operating frequency, with have the same power of different operating frequency F by the control criterion tester to portable terminal input, carry out the calibration of gamma correction and frequency characteristic respectively;
Described step B is the controlled quentity controlled variable A of portable terminal automatic gain control module when being read the controlled quentity controlled variable V of the automatic gain control module of portable terminal when the different capacity P and being read different operating frequency F by computer;
Described step C obtains offset data, it is the corresponding formation first calibration data form of different capacity P that to read with controlled quentity controlled variable V, write in the portable terminal internal memory, corresponding with the different operating frequency F that will read with controlled quentity controlled variable A, difference DELTA V between the received signal intensity of portable terminal is indicated under the received signal intensity indication that calculates portable terminal under the different frequency and the standard frequency, with different operating frequency F and the corresponding second calibration data form that forms of difference DELTA V thereof, write in the portable terminal internal memory;
Described step D further comprises: the CPU of portable terminal is read corresponding different capacity P and first correction card of controlled quentity controlled variable V from internal memory; Utilize the piecewise linear approximation algorithm P and corresponding V to be carried out piecewise linear approximation calculating, the result after the acquisition broken lineization; Result after the broken lineization is write in the digital baseband processor of portable terminal;
Described step e further comprises: the CPU of portable terminal is read the controlled quentity controlled variable of current automatic gain control module; Find the broken line at this controlled quentity controlled variable place the result after broken lineization, the received signal strength indicator value after the acquisition nonlinear compensation; The CPU of portable terminal is read the operating frequency of current mobile terminal; By inquiring about second correction card, obtain difference DELTA V corresponding under this operating frequency, with the received signal strength indicator value after the nonlinear compensation and this difference addition, the acquisition nonlinear compensation adds the working control amount of the automatic gain control module after the frequency compensation.
8. according to the method for claim 5 or 7 described a kind of portable terminal automatic correction compensations, it is characterized in that: the described piecewise linear approximation that carries out calculates, and comprising: select counting of corresponding formation between power P and controlled quentity controlled variable V according to the quality of linear characteristic; The point of selecting is linked to be broken line; By described piecewise linear approximation algorithm this broken line is carried out piecewise linear approximation and calculate, the result after the acquisition broken lineization;
Find the broken line at this controlled quentity controlled variable place the described result after broken lineization, adopt sort algorithm to seek whole broken lines; Utilize power P 1, P2 and corresponding controlled quentity controlled variable V1, the V2 of this broken line two-end-point that searches out, calculate the received signal strength indicator value after the described acquisition nonlinear compensation.
9. according to the method for claim 6 or 7 described a kind of portable terminal automatic correction compensations, it is characterized in that: the difference DELTA V between the received signal intensity of portable terminal is indicated under the described received signal intensity indication that calculates portable terminal under the different frequency and the standard frequency, comprise: according to the different operating frequency of gain with the speed setting portable terminal of frequency change, the interval of operating frequency can equate or be unequal; Respectively according to the automatic gain control module output variable under the operating frequency F, on the control voltage of this operating frequency and output power curve, find corresponding received signal intensity indication, deduct the received signal intensity indication of portable terminal under the standard frequency again and obtain.
10. the method for a kind of portable terminal automatic correction compensation according to claim 4 is characterized in that: between described step D and step e, increase by one by computer-controlled time-delay step.
11. the method for a kind of portable terminal automatic correction compensation according to claim 4, it is characterized in that: described offset data is write in the portable terminal internal memory, comprise and earlier offset data being kept in the internal memory of portable terminal, after holding instruction of described computer is effective, the offset data that is kept in the internal memory is saved among the FLASH again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021313946A CN1266964C (en) | 2002-10-10 | 2002-10-10 | Automatic correction compensation system and method for mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021313946A CN1266964C (en) | 2002-10-10 | 2002-10-10 | Automatic correction compensation system and method for mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1489406A true CN1489406A (en) | 2004-04-14 |
| CN1266964C CN1266964C (en) | 2006-07-26 |
Family
ID=34144918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021313946A Expired - Fee Related CN1266964C (en) | 2002-10-10 | 2002-10-10 | Automatic correction compensation system and method for mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1266964C (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123595B (en) * | 2007-09-03 | 2010-06-30 | 北京天碁科技有限公司 | A method and system for gain calibration of digital receiver channel |
| CN101876693A (en) * | 2010-06-09 | 2010-11-03 | 合肥工业大学 | Electric energy metering chip-based terminal calibration system |
| CN101047915B (en) * | 2007-04-10 | 2010-12-08 | 上海宣普实业有限公司 | Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal |
| CN101986581A (en) * | 2010-09-02 | 2011-03-16 | 湖北众友科技实业股份有限公司 | Method and system for automatic gain control calibration of TD-LTE terminal |
| CN101005671B (en) * | 2007-01-17 | 2011-04-13 | 中兴通讯股份有限公司 | Regulating method and device for audio frequency parameter |
| CN101119146B (en) * | 2007-09-03 | 2011-04-13 | 北京天碁科技有限公司 | Method, system and device for performing calibration to communication terminal emitter power |
| CN101188463B (en) * | 2007-12-20 | 2011-11-09 | 北京北方烽火科技有限公司 | A power calibration and real time correction device for CDMA receiver and its implementation method |
| CN102522990A (en) * | 2011-12-16 | 2012-06-27 | 惠州Tcl移动通信有限公司 | Method and system for improving ADC calibration precision of mobile terminal |
| WO2013023539A1 (en) * | 2011-08-16 | 2013-02-21 | 惠州Tcl移动通信有限公司 | Method for calibrating transmission gsm frequency band power of mobile terminal |
| CN101369835B (en) * | 2008-10-14 | 2013-04-24 | 华为终端有限公司 | Gain compensation method and device of wireless terminal |
| CN103701481A (en) * | 2013-12-03 | 2014-04-02 | 波达通信设备（广州）有限公司 | Receiving level calibrating method for digital microwave transceiver |
| CN104682953A (en) * | 2015-02-15 | 2015-06-03 | 大唐联仪科技有限公司 | Error calibration method and device of tuning circuit |
| CN105450183A (en) * | 2014-07-31 | 2016-03-30 | 展讯通信（上海）有限公司 | Temperature compensation method and device for linear power amplifier |
| CN105764083A (en) * | 2014-12-18 | 2016-07-13 | 中兴通讯股份有限公司 | RSSI compensation method, device and base station |
| CN106468601A (en) * | 2016-09-14 | 2017-03-01 | 上海为准电子科技有限公司 | A kind of method and device of temperature correction |
| CN109525331A (en) * | 2018-11-01 | 2019-03-26 | 大唐联仪科技有限公司 | A kind of linear calibration methods and device of radio frequency link |
| CN109814434A (en) * | 2018-12-20 | 2019-05-28 | 北京华航唯实机器人科技股份有限公司 | Control the calibration method and device of program |
| CN112838837A (en) * | 2020-12-30 | 2021-05-25 | 京信网络系统股份有限公司 | Automatic control method and device for power amplifier output |
-
2002
- 2002-10-10 CN CNB021313946A patent/CN1266964C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005671B (en) * | 2007-01-17 | 2011-04-13 | 中兴通讯股份有限公司 | Regulating method and device for audio frequency parameter |
| CN101047915B (en) * | 2007-04-10 | 2010-12-08 | 上海宣普实业有限公司 | Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal |
| CN101123595B (en) * | 2007-09-03 | 2010-06-30 | 北京天碁科技有限公司 | A method and system for gain calibration of digital receiver channel |
| CN101119146B (en) * | 2007-09-03 | 2011-04-13 | 北京天碁科技有限公司 | Method, system and device for performing calibration to communication terminal emitter power |
| CN101188463B (en) * | 2007-12-20 | 2011-11-09 | 北京北方烽火科技有限公司 | A power calibration and real time correction device for CDMA receiver and its implementation method |
| CN101369835B (en) * | 2008-10-14 | 2013-04-24 | 华为终端有限公司 | Gain compensation method and device of wireless terminal |
| CN101876693B (en) * | 2010-06-09 | 2013-06-12 | 合肥工业大学 | Electric energy metering chip-based terminal calibration system |
| CN101876693A (en) * | 2010-06-09 | 2010-11-03 | 合肥工业大学 | Electric energy metering chip-based terminal calibration system |
| CN101986581A (en) * | 2010-09-02 | 2011-03-16 | 湖北众友科技实业股份有限公司 | Method and system for automatic gain control calibration of TD-LTE terminal |
| WO2013023539A1 (en) * | 2011-08-16 | 2013-02-21 | 惠州Tcl移动通信有限公司 | Method for calibrating transmission gsm frequency band power of mobile terminal |
| CN102522990A (en) * | 2011-12-16 | 2012-06-27 | 惠州Tcl移动通信有限公司 | Method and system for improving ADC calibration precision of mobile terminal |
| CN103701481A (en) * | 2013-12-03 | 2014-04-02 | 波达通信设备（广州）有限公司 | Receiving level calibrating method for digital microwave transceiver |
| CN103701481B (en) * | 2013-12-03 | 2016-10-05 | 波达通信设备（广州）有限公司 | A kind of incoming level calibration steps of digital microwave transceiver |
| CN105450183A (en) * | 2014-07-31 | 2016-03-30 | 展讯通信（上海）有限公司 | Temperature compensation method and device for linear power amplifier |
| CN105764083A (en) * | 2014-12-18 | 2016-07-13 | 中兴通讯股份有限公司 | RSSI compensation method, device and base station |
| CN104682953A (en) * | 2015-02-15 | 2015-06-03 | 大唐联仪科技有限公司 | Error calibration method and device of tuning circuit |
| CN106468601A (en) * | 2016-09-14 | 2017-03-01 | 上海为准电子科技有限公司 | A kind of method and device of temperature correction |
| CN109525331A (en) * | 2018-11-01 | 2019-03-26 | 大唐联仪科技有限公司 | A kind of linear calibration methods and device of radio frequency link |
| CN109525331B (en) * | 2018-11-01 | 2021-07-06 | 大唐联仪科技有限公司 | Linear calibration method and device for radio frequency link |
| CN109814434A (en) * | 2018-12-20 | 2019-05-28 | 北京华航唯实机器人科技股份有限公司 | Control the calibration method and device of program |
| CN112838837A (en) * | 2020-12-30 | 2021-05-25 | 京信网络系统股份有限公司 | Automatic control method and device for power amplifier output |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1266964C (en) | 2006-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1266964C (en) | Automatic correction compensation system and method for mobile terminal | |
| CN101047915B (en) | Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal | |
| CN110896330B (en) | Transmitting power calibration method and device suitable for multiple frequency points and multiple power points | |
| CN1444344A (en) | Combined open-loop and closed-loop power control measured by using difference | |
| CN101257331B (en) | Gain automatic correction method and transmitter | |
| US8855574B2 (en) | Radio frequency calibration method and apparatus for mobile terminal | |
| CN101068431A (en) | Radio frequency calibrating method and device | |
| CN1853108A (en) | A measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterisation of the impedance thereof | |
| CN102208953B (en) | Calibration method of mobile phone transmission power | |
| CN101951634B (en) | Method and system for automatic power control calibration of TD-LTE terminal | |
| CN1553582A (en) | Calibrating apparatus and method for automatic gain control circuit of array receiver | |
| CN105807133B (en) | Realize the system that frequency trims integrated control | |
| CN1808914A (en) | Automatic power control and calibration gauge for mobile terminal and its design method | |
| CN104901751B (en) | A kind of radio-frequency apparatus temperature compensation and device | |
| CN1993900A (en) | Determining the current value of a transmission power of a radio telecommunication device | |
| CN106199115B (en) | A kind of baseline zero bias automatic correcting method of digital oscilloscope | |
| CN111819796B (en) | Analog-to-digital conversion method, device, chip, electronic equipment and storage medium | |
| CN108184009B (en) | Power calibration method and device and computer readable storage device | |
| CN117236515A (en) | Method for predicting urban street tree breast diameter growth trend, prediction system and electronic equipment | |
| CN107976646B (en) | Signal power characteristic compensation method and device based on vector network analyzer | |
| CN111342777B (en) | Effective power supply voltage calculation method for frequency mixer | |
| CN108170193A (en) | A kind of output adjusting method and system of the power supply board of display device | |
| CN1627650A (en) | Gain correction system for reception channel in radio frequency and method | |
| CN1623274A (en) | RF output power control | |
| CN110967555A (en) | Method for improving trigger precision of peak power measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060726 Termination date: 20201010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |