CN102780460A - PA (power amplifier) overpower protecting method and device - Google Patents
PA (power amplifier) overpower protecting method and device Download PDFInfo
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- CN102780460A CN102780460A CN2012102352097A CN201210235209A CN102780460A CN 102780460 A CN102780460 A CN 102780460A CN 2012102352097 A CN2012102352097 A CN 2012102352097A CN 201210235209 A CN201210235209 A CN 201210235209A CN 102780460 A CN102780460 A CN 102780460A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
Abstract
The invention discloses a PA (power amplifier) overpower protecting method and a PA overpower protecting device, which is used for realizing the more complete overpower protection of a PA. The method comprises the following steps that the existing statistical energy protection mechanism is adopted; by aiming at in-phase component and orthogonal component data of phase and amplitude signals of each antennas subjected to DUC (digital up converter), CFR (crest ractor reduction) and DPD (digital pre distortion) processing, the sum of the energy value of the orthogonal component data and the energy value of the in-phase component of phase and amplitude signals in each second time duration is respectively calculated, and the second sum value is obtained; and the second sum value is compared with the preset second power protection threshold value, and when the second sum value of any one antenna is greater than the second power protection threshold value, the in-phase component and orthogonal component data of the phase and amplitude signals in each second time duration is sent to the PA after zero clearing, wherein the second time duration is smaller than 1 chip, so the more complete overpower protection of the PA is realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of power amplifier (PA) overpower protection method and device.
Background technology
TD-SCDMA, TD-LTE are 3G, the 4G wireless communication technology standards of present main flow, and in the wireless communication system networking, the power amplifier that uses in the base station equipment (PA) is an important devices of guaranteeing seamless covering of system and reasonability price ratio.How protecting PA to greatest extent, prolong PA useful life, is one of technical problem of paying close attention to of each Wireless Telecom Equipment manufacturer, operator.
In the prior art, the high power amplifier that uses in the radio communication system base station equipment is operated in about the GHZ frequency, and rated output power is more than 40dbm; Gain characteristic under rated output power is also more than 40db; Use the casacade multi-amplifier structure to realize, requiring to self design protection of this high power amplifier mainly is can not burn in several minutes for working under the full load+3dB in power output at PA under the abnormal conditions, behind the abnormal restoring; PA can stablize operate as normal, and performance does not have deterioration.It is unusual unusual with outlet side that abnormal conditions can be divided into input side usually, and what input side had at full capacity unusually usually or the overload input causes is unusual, outlet side have usually unusually that antenna port short circuit, open circuit cause unusually.Promptly can deal with through current monitoring and the hardware overpower protection circuit of design PA to abnormal conditions, also can solve through use the design of prevention in advance and corresponding reprocessing at numerical portion in analog part.
In order to reduce hardware design complexity and hardware cost, to the input side abnormal protection, existing protection scheme is concentrated the statistics energy overpower protection for using numerical portion to realize usually.The thought of this overpower protection scheme mainly is that down link can be closed corresponding antenna automatically when base band downlink transfer in certain period is given the data excessive (chugging) of intermediate frequency, thereby avoids causing burning the power amplifier phenomenon because power is excessive; Otherwise when the signal data that sends returns to the normal range (NR) of permission, and when no longer emergent power was unusual within a certain period of time, at this moment down link can be opened this respective antenna automatically.Simultaneously, in case data sudden changes (energy is unusual) take place again, can close corresponding antenna once more automatically and implement protection.
Concrete; Statistics is once passed through Digital Up Convert (Digital Up Converter in descending each time slot; DUC), (Crest Factor Reduction is CFR) with digital pre-distortion (Digital Pre-Distortion, the phase place of DPD) exporting afterwards and the in-phase component and quadrature component (the Inphase and Quadrature signals of range signal for peak factor decay; I/Q) data, promptly statistics detects the interior energy value ∑ (i of antenna descending time slot separately respectively
2+ q
2) (wherein, i representes above-mentioned in-phase component, and q representes above-mentioned quadrature component; 1 of the quadratic sum correspondence of the two or the power of part chip; Energy value just, multiple spot add up and obtain energy and the value in the certain hour), the slot length of adding up in the overpower protection is 256 chips (chip).Then, this value is compared with the power shutter limit value pwr_threshold that sets, as ∑ (i
2+ q
2During)＞pwr_threshold, down link is closed corresponding antenna automatically.Otherwise, if subsequent detection is to the interior ∑ (i of continuous 50 statistics
2+ q
2)＜pwr_threshold, when promptly not having data sudden changes (energy is unusual), down link is opened respective antenna more automatically, realizes the protection to PA with this.
But the major defect of this prior art has:
To the reason of power amplifier damage, only considered the statistics excessive power amplifier that causes of power (PA) damage in a period of time on the one hand, do not considered the excessive influence of the various instantaneous powers that other cause unusually PA;
On the other hand along with the increase of PA bandwidth, whether the statistical interval of statistics power protection suitable becomes the important consideration whether this protection scheme comes into force;
At last, when considering protection PA, can not ignore the influence of systematic function, the two must balancedly consider that this is because the frequent switch to antenna that protection is introduced certainly will bring influence to normal business.That is to say that the timing statistics of statistics protecting energy must be able to not impact systematic function with the interval of removing protection, along with the raising of radio communication system data speed also more becomes a problem that needs special concern.
Summary of the invention
The embodiment of the invention provides a kind of PA overpower protection method and device, in order to realize the more complete overpower protection to PA.
A kind of PA overpower protection method that the embodiment of the invention provides comprises:
To the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first; When first of arbitrary antenna during greater than the preset first power shutter limit value, cuts out the down link of this antenna with value; And,
To the phase place after process DUC, CFR and the DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second; When arbitrary antenna second with value during, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the preset second power shutter limit value;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
A kind of PA overpower protection method that the embodiment of the invention provides comprises:
To the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna, wherein, said very first time length is less than 256 chips.
A kind of PA overpower protection method that the embodiment of the invention provides comprises:
To the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
Compare with the second preset power shutter limit value with value second; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data; Wherein, said second time span is less than 1 chip.
A kind of PA overpower protection that the embodiment of the invention provides comprises:
First protected location; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; And,
Second protected location; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second, when arbitrary antenna second when being worth, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the second power shutter limit value preset;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
A kind of PA overpower protection that the embodiment of the invention provides comprises:
The first energy value statistic unit; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
The first comparison process unit; Be used for comparing with the first preset power shutter limit value with value with first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; Wherein, said very first time length is less than 256 chips.
A kind of PA overpower protection that the embodiment of the invention provides comprises:
The second energy value statistic unit; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
The second comparison process unit; Be used for comparing with the second preset power shutter limit value with value with second; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data, wherein, said second time span is less than 1 chip.
The embodiment of the invention; To the phase place after process DUC, CFR and the DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; And; To the phase place after process DUC, CFR and the DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second, when arbitrary antenna second when being worth, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the second power shutter limit value preset; Wherein, Second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value, thereby can be under the prerequisite that does not increase hardware design complexity; To PA complete protection more is provided, effectively reduces production costs and the post facility O&M cost.
Description of drawings
The schematic flow sheet of a kind of PA overpower protection method that Fig. 1 provides for the embodiment of the invention;
The schematic flow sheet of a kind of PA overpower protection method that Fig. 2 provides for the embodiment of the invention;
The schematic flow sheet of a kind of PA overpower protection method that Fig. 3 provides for the embodiment of the invention;
The structural representation of a kind of PA overpower protection that Fig. 4 provides for the embodiment of the invention;
The structural representation of a kind of PA overpower protection that Fig. 5 provides for the embodiment of the invention;
The structural representation of a kind of PA overpower protection that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of PA overpower protection method and device, in order to realize the more complete overpower protection to PA.
The technical scheme that the embodiment of the invention proposes; Can be used for power protection to the PA that strengthens TD-LTE and TD-SCDMA base station; Feasible current monitoring and the hardware overpower protection circuit that need not the PA of complex design; Through using the algorithm flow of numeric field, solve whole PA input front end because the PA that various abnormal conditions cause damages problem.
The technical scheme that the embodiment of the invention proposes can be used for other any high-power data such as WCDMA FDD, UTRA TDD, TD-SCDMA, TD-LTE and send occasion; Can use software fully; Also can use the collaborative or SOC realization of software and hardware, can be used as a design I P and be integrated in the system applies of various needs.
The embodiment of the invention is through optimizing existing statistics protecting energy mechanism; Newly-increased instantaneous energy protection mechanism; Can under the prerequisite that does not increase hardware design complexity, complete protection more be provided, take into account influence simultaneously systematic function to PA; Thereby effectively reduce the hardware production cost, improve systematic function and reduce the post facility O&M cost.
Below in conjunction with accompanying drawing the technical scheme that the embodiment of the invention provides is described.
Referring to Fig. 1, a kind of power amplifier PA overpower protection method that the embodiment of the invention provides comprises step:
The phase place after S101, process DUC, CFR and the DPD processing and the in-phase component and the quadrature component data of range signal to each antenna; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first; When first of arbitrary antenna during greater than the preset first power shutter limit value, cuts out the down link of this antenna with value; And,
The phase place after S102, process DUC, CFR and the DPD processing and the in-phase component and the quadrature component data of range signal to each antenna; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second; When arbitrary antenna second with value during, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the preset second power shutter limit value;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
Need to prove that in the embodiment of the invention, the execution sequence of step S101 and S102 can exchange, also can executed in parallel, promptly can carry out simultaneously, also can successively carry out, there is not inevitable sequencing relation each other.
Preferably, this method also comprises:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link of continuous preset times statistics during less than the first power shutter limit value preset, are opened the down link of this antenna.
Preferably, said preset times is 200 times.
Preferably, said very first time length is 32 chips.
Certainly, in the embodiment of the invention, also only execution in step S101 or S102 also can play the effect of overpower protection.
Participate in Fig. 2, a kind of power amplifier PA overpower protection method that the embodiment of the invention provides comprises step:
The phase place after S201, process DUC, CFR and the DPD processing and the in-phase component and the quadrature component data of range signal to each antenna; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
S202, with first and value compare with the first preset power shutter limit value, during greater than the preset first power shutter limit value, close the down link of this antenna with value when first of arbitrary antenna, wherein, said very first time length is less than 256 chips.
Preferably, this method also comprises:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link that continuous preset times is added up; During less than the preset first power shutter limit value; Open the down link of this antenna, wherein said preset times is greater than 50 times.
Participate in Fig. 3, a kind of power amplifier PA overpower protection method that the embodiment of the invention provides comprises:
The phase place after S301, process DUC, CFR and the DPD processing and the in-phase component and the quadrature component data of range signal to each antenna; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
S302, with second and value compare with the second preset power shutter limit value; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data; Wherein, said second time span is less than 1 chip.
Dual-mode base station remote radio unit (RRU) (RRU) with TD-SCDMA and TD-LTE is that example describes below.
In the embodiment of the invention; Through optimizing existing statistics power protection and remove the processing realization mechanism of protecting, newly-increased simultaneously instantaneous power protection, realization power amplifier input protection that can be more complete; And can not impact systematic function; Realize through software,, protected existing hardware input simultaneously not influence of hardware cost.
The design philosophy that the energy overpower protection is added up in the optimization of using numerical portion to realize does not change; Variation on concrete the realization is to use shorter statistical interval, recovers at interval faster; Promptly in each descending time slot; To the I/Q data through output after the DUC+CFR+DPD of each antenna, add up the energy value ∑ (i of the I/Q data of each antenna in each very first time length respectively
2+ q
2).
Wherein, said very first time length can (this numerical value can suitably be adjusted, for example for 32chip; Its value can specifically can be confirmed through long-term system testing between scope 16 ~ 48chip according to actual needs), promptly to each antenna; The interior energy value of the every continuous 32chip of statistics through the I/Q data of output after the DUC+CFR+DPD; That is to say that every separated 32chip adds up once, the energy value of the I/Q data that the 32chip time span of at every turn adding up nearest is interior.
Then, to each antenna, its corresponding energy value is compared with the first power shutter limit value pwr_threshold of setting, as ∑ (i
2+ q
2During)＞pwr_threshold, down link is closed this antenna automatically, and promptly this antenna does not send data.
Wherein, about the value of pwr_threshold, for example, this threshold value increases 3db than numeral calibration energy value.
Otherwise; (this numerical value can suitably be adjusted at continuous 200 times to the antenna of closing as if subsequent detection; Its span can specifically be confirmed through long-term system testing between 150 ~ 250 times according to actual needs) energy statistics in, the energy value of each statistics all satisfies ∑ (i
2+ q
2)＜pwr_threshold, when promptly not having data sudden changes (energy is unusual), down link is opened this antenna more automatically.Realize protection with this to PA.
In the embodiment of the invention; The technical scheme of the instantaneous energy overpower protection that the use numerical portion is realized is to each dateout sampling point; Its sampling point power should be within limits; Need to detect in real time the power of each dateout sampling point for this reason,, otherwise then carry out amplitude limiting processing in the reasonable scope if power then do not deal with.
Promptly in descending each time slot,, add up the energy value ∑ (i of the I/Q data of exporting afterwards through DUC+CFR+DPD in each second time span to each antenna
2+ q
2).
Wherein, said second time span can be the part of chip, for example as far as the LTE of sample rate 30.72M, uses the DAC interface of sample rate 245.76M, and then second time span can be 1/8chip.Promptly be directed against each antenna, the every continuous interior process of the 1/8chip DUC+CFR+DPD of statistics is the energy value of the I/Q data of output afterwards, that is to say that every separated 1/8chip adds up once, the energy value of the I/Q data that the 1/8chip time span of at every turn adding up nearest is interior.
Then, this value is compared with the second power shutter limit value pwr_threshold1 that sets, as ∑ (i
2+ q
2During)＞pwr_threshold1, with the zero clearing of this sampling number certificate, promptly the data to PA output are 0; Otherwise, do not deal with.Realize protection with this to PA.
Wherein, Value about pwr_threshold1; For example, this threshold value can be calibrated energy value than numeral increases 10db, and the statistics power threshold corresponding with the first power shutter limit value pwr_threshold is different; The corresponding peak power thresholding of pwr_threshold1, the difference of the two is the peak-to-average force ratio of I/Q data.
Preferably, can use the instantaneous energy overpower protection earlier in the embodiment of the invention, optimize statistics energy overpower protection again, can under the prerequisite that can not impact, more complete PA protection be provided systematic function.
Referring to Fig. 4, a kind of power amplifier PA overpower protection that the embodiment of the invention provides comprises:
First protected location 11; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; And,
Second protected location 12; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second, when arbitrary antenna second when being worth, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the second power shutter limit value preset;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
Preferably, said first protected location 11 also is used for:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link of continuous preset times statistics during less than the first power shutter limit value preset, are opened the down link of this antenna.
Preferably, said preset times is 200 times.
Preferably, said very first time length is 32 chips.
Participate in Fig. 5, a kind of power amplifier PA overpower protection that the embodiment of the invention provides comprises:
The first energy value statistic unit 21; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
The first comparison process unit 22; Be used for comparing with the first preset power shutter limit value with value with first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; Wherein, said very first time length is less than 256 chips.
Preferably, the said first comparison process unit 22 also is used for:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link that continuous preset times is added up; During less than the preset first power shutter limit value; Open the down link of this antenna, wherein said preset times is greater than 50 times.
Participate in Fig. 6, a kind of power amplifier PA overpower protection that the embodiment of the invention provides comprises:
The second energy value statistic unit 31; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
The second comparison process unit 32; Be used for comparing with the second preset power shutter limit value with value with second; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data, wherein, said second time span is less than 1 chip.
In sum, the technical scheme that the embodiment of the invention provides can provide complete protection more to PA under the prerequisite that does not increase hardware design complexity, thereby effectively reduces production costs and the post facility O&M cost.The PA protection of the embodiment of the invention takes into account with systematic function, and the implementation of instantaneous energy protection is provided.Use first instantaneous energy overpower protection, the method for optimizing statistics energy overpower protection again can provide more complete PA protection under the prerequisite that can not impact systematic function.With respect to statistics energy overpower protection in the prior art, the present invention has carried out taking into account consideration through recovering faster at interval between PA protection and systematic function, have extremely strong feasibility.The present invention can use software fully, also can use the collaborative or SOC realization of software and hardware, can be used as a design I P and is integrated in the system applies of various needs.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. power amplifier PA overpower protection method is characterized in that this method comprises:
To the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first; When first of arbitrary antenna during greater than the preset first power shutter limit value, cuts out the down link of this antenna with value; And,
To the phase place after process DUC, CFR and the DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second; When arbitrary antenna second with value during, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the preset second power shutter limit value;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
2. method according to claim 1 is characterized in that, this method also comprises:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link of continuous preset times statistics during all less than the first power shutter limit value preset, are opened the down link of this antenna.
3. power amplifier PA overpower protection method is characterized in that this method comprises:
To the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna, wherein, said very first time length is less than 256 chips.
4. method according to claim 3 is characterized in that, this method also comprises:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link that continuous preset times is added up; During all less than the preset first power shutter limit value; Open the down link of this antenna, wherein said preset times is greater than 50 times.
5. power amplifier PA overpower protection method is characterized in that this method comprises:
To the phase place after process DUC, CFR and the DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
Compare with the second preset power shutter limit value with value second; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data; Wherein, said second time span is less than 1 chip.
6. power amplifier PA overpower protection is characterized in that this device comprises:
First protected location; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively; Obtain first and value; Compare with the first preset power shutter limit value with value first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; And,
Second protected location; Be used for to the phase place after the handling of each antenna and the in-phase component and the quadrature component data of range signal through DUC, CFR and DPD; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively; Obtain second and value; Compare with the second preset power shutter limit value with value second, when arbitrary antenna second when being worth, with sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data greater than the second power shutter limit value preset;
Wherein, second time span is less than very first time length, and the said first power shutter limit value is less than the second power shutter limit value.
7. device according to claim 6 is characterized in that, said first protected location also is used for:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link of continuous preset times statistics during less than the first power shutter limit value preset, are opened the down link of this antenna.
8. power amplifier PA overpower protection is characterized in that this device comprises:
The first energy value statistic unit; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each very first time length respectively, obtain first and value;
The first comparison process unit; Be used for comparing with the first preset power shutter limit value with value with first, when arbitrary antenna first when being worth greater than the first power shutter limit value preset, close the down link of this antenna; Wherein, said very first time length is less than 256 chips.
9. device according to claim 8 is characterized in that, the said first comparison process unit also is used for:
Phase place and the in-phase component of range signal and the energy value of quadrature component data in the very first time length of the antenna of closing down link that continuous preset times is added up; During all less than the preset first power shutter limit value; Open the down link of this antenna, wherein said preset times is greater than 50 times.
10. power amplifier PA overpower protection is characterized in that this device comprises:
The second energy value statistic unit; Be used for to the phase place after process Digital Up Convert DUC, peak factor decay CFR and the digital pre-distortion DPD processing of each antenna and the in-phase component and the quadrature component data of range signal; Calculate energy value and the energy value sum of quadrature component data of the in-phase component data of phase place and range signal in each second time span respectively, obtain second and value;
The second comparison process unit; Be used for comparing with the second preset power shutter limit value with value with second; When arbitrary antenna second with value during greater than the preset second power shutter limit value; With sending to PA after the in-phase component of phase place in this second time span and range signal and the zero clearing of quadrature component data, wherein, said second time span is less than 1 chip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102352097A CN102780460A (en) | 2012-07-06 | 2012-07-06 | PA (power amplifier) overpower protecting method and device |
| PCT/CN2013/078892 WO2014005549A1 (en) | 2012-07-06 | 2013-07-05 | Overpower protection method and device for pa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102352097A CN102780460A (en) | 2012-07-06 | 2012-07-06 | PA (power amplifier) overpower protecting method and device |
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| Publication Number | Publication Date |
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| CN102780460A true CN102780460A (en) | 2012-11-14 |
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| CN2012102352097A Pending CN102780460A (en) | 2012-07-06 | 2012-07-06 | PA (power amplifier) overpower protecting method and device |
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| Country | Link |
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| CN (1) | CN102780460A (en) |
| WO (1) | WO2014005549A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014005549A1 (en) * | 2012-07-06 | 2014-01-09 | 大唐移动通信设备有限公司 | Overpower protection method and device for pa |
| CN107113069A (en) * | 2015-01-07 | 2017-08-29 | 三星电子株式会社 | Method and apparatus for controlling the power consumption in GSM |
| CN107302471A (en) * | 2016-04-14 | 2017-10-27 | 大唐移动通信设备有限公司 | A kind of DPD performs method, apparatus and system |
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| CN1917403A (en) * | 2005-08-16 | 2007-02-21 | 中兴通讯股份有限公司 | Method ans equipment for protecting power amplification realized based on FPGA |
| CN101771458A (en) * | 2008-12-30 | 2010-07-07 | 大唐移动通信设备有限公司 | Overpower protection method and device of far-end radio-frequency system of base station |
| CN102111195A (en) * | 2010-12-29 | 2011-06-29 | 武汉邮电科学研究院 | Overpower protection method for power amplifiers of remote radio unit (RRU) system |
| WO2012090696A1 (en) * | 2010-12-28 | 2012-07-05 | 住友電気工業株式会社 | Overpower detector and wireless communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780460A (en) * | 2012-07-06 | 2012-11-14 | 大唐移动通信设备有限公司 | PA (power amplifier) overpower protecting method and device |
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2012
- 2012-07-06 CN CN2012102352097A patent/CN102780460A/en active Pending
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2013
- 2013-07-05 WO PCT/CN2013/078892 patent/WO2014005549A1/en active Application Filing
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| CN1917403A (en) * | 2005-08-16 | 2007-02-21 | 中兴通讯股份有限公司 | Method ans equipment for protecting power amplification realized based on FPGA |
| CN101771458A (en) * | 2008-12-30 | 2010-07-07 | 大唐移动通信设备有限公司 | Overpower protection method and device of far-end radio-frequency system of base station |
| WO2012090696A1 (en) * | 2010-12-28 | 2012-07-05 | 住友電気工業株式会社 | Overpower detector and wireless communication device |
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| WO2014005549A1 (en) * | 2012-07-06 | 2014-01-09 | 大唐移动通信设备有限公司 | Overpower protection method and device for pa |
| CN107113069A (en) * | 2015-01-07 | 2017-08-29 | 三星电子株式会社 | Method and apparatus for controlling the power consumption in GSM |
| CN107302471A (en) * | 2016-04-14 | 2017-10-27 | 大唐移动通信设备有限公司 | A kind of DPD performs method, apparatus and system |
| CN107302471B (en) * | 2016-04-14 | 2020-05-26 | 大唐移动通信设备有限公司 | DPD execution method, device and system |
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| WO2014005549A1 (en) | 2014-01-09 |
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