CN106603108A - Transceiver and work method thereof - Google Patents
Transceiver and work method thereof Download PDFInfo
- Publication number
- CN106603108A CN106603108A CN201510665005.0A CN201510665005A CN106603108A CN 106603108 A CN106603108 A CN 106603108A CN 201510665005 A CN201510665005 A CN 201510665005A CN 106603108 A CN106603108 A CN 106603108A
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- Prior art keywords
- intermediate frequency
- zero intermediate
- path
- calibration
- feedback control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/30—Circuits for homodyne or synchrodyne receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Abstract
The present invention provides a transceiver and a work method thereof. The transceiver comprises: a zero intermediate frequency emission pathway and a zero intermediate frequency receiving pathway; a feedback control link configured to obtain emission signals of the zero intermediate frequency emission pathway, generate feedback signals according to emission signals and calibrate the zero intermediate frequency emission pathway according to the feedback signals; and a calibration device configured to perform online calibration of the zero intermediate frequency emission pathway, the zero intermediate frequency receiving pathway and the feedback control link. Through the embodiment of the invention, the transceiver obtains the emission signals of the emission pathway through the feedback control link and performs inverse calibration of the emission pathway according to the emission signals, and the calibration device realizes the online calibration of all the pathways in the transceiver to allow the transceiver to perform real-time calibration according to the operation condition of the device so as to improve the work performance of the zero intermediate frequency transceiver and solve the performance that the current zero intermediate frequency transceiver is bad in work performance caused by the usage of the offline calibration.
Description
Technical field
The present invention relates to the transceiver field of communication system, more particularly to a kind of transceiver and method of work.
Background technology
In recent years in the communications field, because of the development of device, zero intermediate frequency technology is more and more to be widely used,
And gradually tend to ripe；It is to eliminate intermediate frequency filtering electricity using the great advantage of the transceiver of zero intermediate frequency technology
Road, intermediate frequency mixer and intermediate frequency local oscillator, simplify passage, reduce the cost of passage, reduce the body of veneer
Product, these advantages have catered to current transceiver especially communication base station miniaturization and inexpensive demand；Cause
This, the transceiver of zero intermediate frequency technology is widely paid close attention to and is used.
But, the carrier wave and image frequency of zero intermediate frequency transceiver can all fall into.
High intermediate frequency scheme can be removed these components in useful signal band by frequency planning, by simple offline
Calibrate and filter to meet system application.But the shortcoming of the maximum of off-line calibration scheme can not for calibration parameter
Adaptive temperature changes, and, with temperature change, calibration performance can be big for the calibration value in room temperature write offline form
Amplitude deteriorates, for zero-intermediate-frequency architecture as carrier wave leakage and sideband suppress these spurious components to entirely fall in
With in signal band, using off-line calibration, service behaviour is poor.
Therefore, how a kind of zero intermediate frequency transceiver for providing service behaviour is provided, is people in the art
Member's technical problem urgently to be resolved hurrily.
The content of the invention
The invention provides a kind of transceiver and method of work, are used with solving existing zero intermediate frequency transceiver
The problem of service behaviour difference caused by off-line calibration.
The invention provides a kind of transceiver, including zero intermediate frequency transmitting path and zero intermediate frequency receiving path, with
And：Feedback control link, for obtaining the transmission signal of zero intermediate frequency transmitting path, generates according to transmission signal
Feedback signal, calibrates zero intermediate frequency transmitting path according to feedback signal；Calibrating installation, for launching to zero intermediate frequency
Path, zero intermediate frequency receiving path and feedback control link carry out on-line calibration.
Further, feedback control link for determining the transmitting work(of zero intermediate frequency transmitting path according to transmission signal
Rate, generates feedback signal according to transmission power, according to feedback signal assisted calibration zero intermediate frequency transmitting path.
Further, transceiver includes multiple zero intermediate frequency transmitting paths, and feedback control link is used for by dividing
The mode of Shi Fuyong calibrates each zero intermediate frequency transmitting path.
Further, calibrating installation is additionally operable to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control
Link processed carries out off-line calibration.
Further, calibrating installation is specifically in initialization, the power amplifier for closing zero intermediate frequency transmitting path is filled
Put；Using the internal calibration source of zero intermediate frequency transmitting path, transmitting local oscillator leakage is carried out to zero intermediate frequency transmitting path
Off-line calibration；Build and using the filter coefficient in zero intermediate frequency transmitting path, the amplitude of analog transmissions branch
And unbalance in phase, zero intermediate frequency transmitting path is carried out launching image frequency off-line calibration；Using feedback control link
Internal calibration source, feedback off-line calibration is carried out to feedback control link；Component simultaneously utilizes feedback control link
On filter coefficient, the amplitude and unbalance in phase of analog feedback branch are carried out instead to feedback control link
Feedback image frequency off-line calibration；Using the internal calibration source of zero intermediate frequency receiving path, zero intermediate frequency receiving path is carried out
Receive off-line calibration；Build and using the filter coefficient in zero intermediate frequency receiving path, simulation receives branch
Amplitude and unbalance in phase, carry out receiving image frequency off-line calibration to zero intermediate frequency receiving path.
Further, calibrating installation opens the power amplification device of zero intermediate frequency transmitting path in normal work；
Control feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, is carried out according to transmission signal digital pre-
Distortion detection, standing wave detection and power detection；Receive mirror is carried out to zero intermediate frequency receiving path using business datum
Frequency on-line calibration；After Preset Time, control feedback control link and stop obtaining sending out for zero intermediate frequency transmitting path
Signal is penetrated, zero intermediate frequency transmitting path is carried out launching local oscillator leakage on-line calibration and transmitting mirror using business datum
Frequency on-line calibration, carries out feeding back image frequency on-line calibration to feedback control link using business datum.
Further, Preset Time includes control calibration switching cycle or transmitting-receiving switching time slot.
The invention provides a kind of method of work of transceiver, transceiver include zero intermediate frequency transmitting path,
Zero intermediate frequency receiving path, feedback control link and calibrating installation, method of work include：Feedback control link
The transmission signal of zero intermediate frequency transmitting path is obtained, feedback signal is generated according to transmission signal, according to feedback signal
Calibration zero intermediate frequency transmitting path；Calibrating installation is to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control
Link processed carries out on-line calibration.
Further, feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, according to transmission signal
Calibration zero intermediate frequency transmitting path includes：Feedback control link determines zero intermediate frequency transmitting path according to transmission signal
Transmission power, generates feedback signal according to transmission power, logical according to the transmitting of feedback signal assisted calibration zero intermediate frequency
Road.
Further, also include：Transceiver includes multiple zero intermediate frequency transmitting paths, and feedback control link leads to
The mode for crossing time-sharing multiplex calibrates each zero intermediate frequency transmitting path.
Further, also include：Calibrating installation is to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback
Control link carries out off-line calibration.
Further, calibrating installation is to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control link
Carrying out off-line calibration includes：In initialization, the power amplification device of zero intermediate frequency transmitting path is closed；In zero
The internal calibration source of frequency transmitting path, carries out launching local oscillator leakage off-line calibration to zero intermediate frequency transmitting path；Structure
Build and using the filter coefficient in zero intermediate frequency transmitting path, the amplitude and unbalance in phase of analog transmissions branch,
Zero intermediate frequency transmitting path is carried out launching image frequency off-line calibration；Using the internal calibration source of feedback control link,
Feedback off-line calibration is carried out to feedback control link；Component using the filter coefficient on feedback control link,
The amplitude and unbalance in phase of analog feedback branch, carries out feeding back image frequency off-line calibration to feedback control link；
Using the internal calibration source of zero intermediate frequency receiving path, reception off-line calibration is carried out to zero intermediate frequency receiving path；Structure
Build and using the filter coefficient in zero intermediate frequency receiving path, simulation receives the amplitude and unbalance in phase of branch,
Zero intermediate frequency receiving path is carried out receiving image frequency off-line calibration.
Further, calibrating installation is to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control link
Carrying out on-line calibration includes：In normal work, the power amplification device of zero intermediate frequency transmitting path is opened；Control is anti-
Feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, carries out digital pre-distortion inspection according to transmission signal
Survey, standing wave is detected and power detection；Reception image frequency is carried out to zero intermediate frequency receiving path using business datum online
Calibration；After Preset Time, control feedback control link and stop obtaining the transmission signal of zero intermediate frequency transmitting path,
Zero intermediate frequency transmitting path is carried out launching local oscillator leakage on-line calibration and the online school of transmitting image frequency using business datum
Standard, carries out feeding back image frequency on-line calibration to feedback control link using business datum.
Further, Preset Time includes control calibration switching cycle or transmitting-receiving switching time slot.
Beneficial effects of the present invention：
The invention provides a kind of transceiver, the transceiver includes feedback control link and calibrating installation, instead
Feedback control link obtains the transmission signal of transmitting path, calibrates transmitting path according to the transmission signal is counter, meanwhile,
Calibrating installation is also achieved to the aisled on-line calibration of institute in transceiver, and so allowing for transceiver can
According to machine operation real time calibration, to improve service behaviour, existing zero intermediate frequency transceiver is solved
Using the problem of service behaviour difference caused by off-line calibration.
Description of the drawings
The structural representation of the transceiver that Fig. 1 is provided for first embodiment of the invention；
The flow chart of the transceiver method of work that Fig. 2 is provided for second embodiment of the invention；
The structural representation of the transceiver that Fig. 3 is provided for third embodiment of the invention；
Fig. 4 is the flow chart of transceiver piece calibration in third embodiment of the invention；
Fig. 5 is the flow chart of receiving path calibration in third embodiment of the invention；
Fig. 6 is the flow chart of transmitting path calibration in third embodiment of the invention；
The structural representation of the transceiver that Fig. 7 is provided for fourth embodiment of the invention.
Specific embodiment
Now the present invention is made by way of specific embodiment combines accompanying drawing and further annotate explanation.
First embodiment：
The structural representation of the transceiver that Fig. 1 is provided for first embodiment of the invention, as shown in Figure 1,
In the present embodiment, the transceiver 1 that the present invention is provided includes：Zero intermediate frequency transmitting path 11 and zero intermediate frequency are received
Path 12, and：
Feedback control link 13, for obtaining the transmission signal of zero intermediate frequency transmitting path 11, according to transmission signal
Feedback signal is generated, zero intermediate frequency transmitting path is calibrated according to feedback signal；
Calibrating installation 14, for entering to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control link
Row on-line calibration, to realize the real time calibration to transceiver.
In certain embodiments, the feedback control link 13 in above-described embodiment is according in feedback signal calibration zero
The mode of frequency transmitting path includes directly control calibration and assisted calibration, can be by arranging individually control mould
Block (such as arranging CPU etc.) is realized to DAC module and/or low-pass filtering module in zero intermediate frequency transmitting path 11
Output carry out directly control calibration, can also be and want to reach by the transmission power in feedback signal and realization
Transmitting work be compared, export a comparative result, then by comparative result send to zero intermediate frequency launch
DAC module and/or low-pass filtering module in path 11, DAC module and/or low-pass filtering module are according to comparing
As a result output is adjusted, to complete assisted calibration of the feedback control link 13 to zero intermediate frequency transmitting path 11
Etc..
In certain embodiments, the feedback control link 13 in above-described embodiment is for determining according to transmission signal
The transmission power of zero intermediate frequency transmitting path, generates feedback signal according to transmission power, is aided according to feedback signal
Calibration zero intermediate frequency transmitting path.
In certain embodiments, the transceiver 1 in above-described embodiment includes multiple zero intermediate frequency transmitting paths 12,
Feedback control link 13 is for calibrating each zero intermediate frequency transmitting path 12 by way of time-sharing multiplex.
In certain embodiments, the calibrating installation 14 in above-described embodiment be additionally operable to zero intermediate frequency transmitting path,
Zero intermediate frequency receiving path and feedback control link carry out off-line calibration.
In certain embodiments, the calibrating installation 14 in above-described embodiment specifically for：
In initialization, the power amplification device of zero intermediate frequency transmitting path is closed；
Using the internal calibration source of zero intermediate frequency transmitting path, transmitting local oscillator leakage is carried out to zero intermediate frequency transmitting path
Off-line calibration；
Build and using the filter coefficient in zero intermediate frequency transmitting path, the amplitude and phase place of analog transmissions branch
Imbalance, carries out launching image frequency off-line calibration to zero intermediate frequency transmitting path；
Using the internal calibration source of feedback control link, feedback off-line calibration is carried out to feedback control link；
Component using the filter coefficient on feedback control link, the amplitude and phase place of analog feedback branch are not
Balance, carries out feeding back image frequency off-line calibration to feedback control link；
Using the internal calibration source of zero intermediate frequency receiving path, reception off-line calibration is carried out to zero intermediate frequency receiving path；
Build and using the filter coefficient in zero intermediate frequency receiving path, simulation receives the amplitude and phase place of branch
Imbalance, carries out receiving image frequency off-line calibration to zero intermediate frequency receiving path.
In certain embodiments, the calibrating installation 14 in above-described embodiment specifically for：
In normal work, the power amplification device of zero intermediate frequency transmitting path is opened；
Control feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, enters line number according to transmission signal
The detection of word predistortion, standing wave detection and power detection；
Zero intermediate frequency receiving path is carried out receiving image frequency on-line calibration using business datum；
After Preset Time, control feedback control link and stop obtaining the transmission signal of zero intermediate frequency transmitting path,
Zero intermediate frequency transmitting path is carried out launching local oscillator leakage on-line calibration and the online school of transmitting image frequency using business datum
Standard, carries out feeding back image frequency on-line calibration to feedback control link using business datum.
In certain embodiments, the Preset Time in above-described embodiment includes control calibration switching cycle or receipts
Switching time slot is sent out, mainly for TDD (Time Division Duplexing, time division duplex) system.
Off-line calibration involved in the present invention referred to when equipment is initialized, the school carried out before non-normal work
Standard, is mainly used in the error of corrective itself presence；Corresponding, on-line calibration then refers to normal in equipment
The calibration carried out during work, is mainly used in corrective because of error caused by the environmental factorss such as temperature, power.
Second embodiment：
The flow chart of the method for work of the transceiver that Fig. 2 is provided for second embodiment of the invention, can by Fig. 2
Know, in the present embodiment, the method for work of the transceiver that the present invention is provided is comprised the following steps：
S201：Feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, is generated according to transmission signal
Feedback signal, calibrates zero intermediate frequency transmitting path according to feedback signal；
S202：Calibrating installation is carried out to zero intermediate frequency transmitting path, zero intermediate frequency receiving path and feedback control link
On-line calibration.
In certain embodiments, the feedback control link in above-described embodiment obtains sending out for zero intermediate frequency transmitting path
Signal is penetrated, and zero intermediate frequency transmitting path is calibrated according to transmission signal includes：Feedback control link is according to transmission signal
Determine the transmission power of zero intermediate frequency transmitting path, feedback signal is generated according to transmission power, according to feedback signal
Assisted calibration zero intermediate frequency transmitting path.
In certain embodiments, the transceiver in above-described embodiment includes multiple zero intermediate frequency transmitting paths, its
Method of work also includes：Feedback control link calibrates each zero intermediate frequency transmitting path by way of time-sharing multiplex.
In certain embodiments, the method for work in above-described embodiment also includes：Calibrating installation is sent out to zero intermediate frequency
Penetrating path, zero intermediate frequency receiving path and feedback control link carries out off-line calibration.
In certain embodiments, the calibrating installation in above-described embodiment is connect to zero intermediate frequency transmitting path, zero intermediate frequency
Receiving path and feedback control link carries out off-line calibration and includes：
In initialization, the power amplification device of zero intermediate frequency transmitting path is closed；
Using the internal calibration source of zero intermediate frequency transmitting path, transmitting local oscillator leakage is carried out to zero intermediate frequency transmitting path
Off-line calibration；
Build and using the filter coefficient in zero intermediate frequency transmitting path, the amplitude and phase place of analog transmissions branch
Imbalance, carries out launching image frequency off-line calibration to zero intermediate frequency transmitting path；
Using the internal calibration source of feedback control link, feedback off-line calibration is carried out to feedback control link；
Component using the filter coefficient on feedback control link, the amplitude and phase place of analog feedback branch are not
Balance, carries out feeding back image frequency off-line calibration to feedback control link；
Using the internal calibration source of zero intermediate frequency receiving path, reception off-line calibration is carried out to zero intermediate frequency receiving path；
Build and using the filter coefficient in zero intermediate frequency receiving path, simulation receives the amplitude and phase place of branch
Imbalance, carries out receiving image frequency off-line calibration to zero intermediate frequency receiving path.
In certain embodiments, the calibrating installation in above-described embodiment is connect to zero intermediate frequency transmitting path, zero intermediate frequency
Receiving path and feedback control link carries out on-line calibration and includes：
In normal work, the power amplification device of zero intermediate frequency transmitting path is opened；
Control feedback control link obtains the transmission signal of zero intermediate frequency transmitting path, enters line number according to transmission signal
The detection of word predistortion, standing wave detection and power detection；
Zero intermediate frequency receiving path is carried out receiving image frequency on-line calibration using business datum；
After Preset Time, control feedback control link and stop obtaining the transmission signal of zero intermediate frequency transmitting path,
Zero intermediate frequency transmitting path is carried out launching local oscillator leakage on-line calibration and the online school of transmitting image frequency using business datum
Standard, carries out feeding back image frequency on-line calibration to feedback control link using business datum.
In certain embodiments, the Preset Time in above-described embodiment includes control calibration switching cycle or receipts
Send out switching time slot.
Further annotation explanation is done to the present invention in conjunction with concrete application scene.
3rd embodiment：
The transceiver that a kind of single reception single-shot is penetrated is present embodiments provided, as shown in Figure 3：
The hardware configuration of transceiver RRU (Remote Radio Unit, Remote Radio Unit) includes receiving
Path and the public antenna 31 of transmitting path, filtration module 32, belong to the low noise amplification module of receiving path
331st, controllable gain amplifier module 341, demodulation module 351, LPF (Low Pass Filter, low pass
Wave filter) (Analog to digital converter, modulus turn for low-pass filtering module 361 and ADC
Parallel operation) analog-to-digital conversion module 371, belong to power amplifier module 332, the controllable gain amplifier module of transmitting path
342nd, modulation module 352, LPF low-pass filtering modules 362 and DAC (Digital to Analog
Converter, digital to analog converter) D/A converter module 372, belong to feedback control link possesses coupling work(
The selecting switch 333 of energy, controllable gain amplifier module 343, demodulation module 353, LPF low-pass filtering moulds
Block 363 and ADC analog-to-digital conversion modules 373, and the main Digital Signal Processing mould for business realizing
Block 38, also including unshowned phase-locked loop module and local oscillator module；Wherein, controllable gain amplifier module 341,
342 and 343 can be realized by a controllable gain amplifier time-sharing multiplex, demodulation module 351, modulation module
352 can also be realized by a modem with demodulation module 353, LPF low-pass filtering modules 361,362
And 363 can be by a LPF low pass filter time-sharing multiplex, ADC analog-to-digital conversion modules 371, DAC digital-to-analogues
Modular converter 372 and ADC analog-to-digital conversion modules 373 can also be realized by an ad/da converter.At this
In embodiment, the function of calibrating installation is realized by software, therefore, the not shown corresponding module of the present embodiment.
Specifically, zero intermediate frequency single channel transceiver system schematic diagram is received and is fed back three parts by launching
Composition, transmitting chain are completed to be supplied to modulation module to complete upper change through low-pass filtering after digital-to-analogue conversion by DAC
Frequently, transmission power is adjusted then through controllable gain amplification module, eventually pass power amplifier and complete after signal amplifies
Complete to filter antenna opening transmitting；Receives link is received after antenna opening signal through low noise amplification and controllable
Gain amplification module give after carrying out gain control demodulator carry out down coversion again through low pass filter filtering after
Analog digital conversion is carried out to ADC；Controllable gain amplifier module and demodulation low pass filtered are included inside feedback link
Filtered signal is supplied to ADC to carry out analog digital conversion and does next step process, feedback link again by ripple module
Power detection is assume responsibility for, standing wave detection, real time calibration function are logical in multiple transmittings using channel switching module
Switch between road.
The transceiver each functions of modules explanation that the present invention is provided, compared with traditional high intermediate frequency, zero-intermediate-frequency architecture is not
Need rf filtering module, intermediate frequency amplification module and intermediate frequency filtering module.Filtration module is used to receive and launch
Filtering in frequency range, completes the suppression to garbage signal, improves transceiver performance.Low noise amplification module
Small-signal to receiving carries out low noise amplification.Controllable gain amplification module completes Receiver And Transmitter
Gain-adjusted function.Modulation /demodulation module carries out frequency up-converted using manipulator to transmitter, to receiver
Down coversion conversion is carried out using demodulator with feedback.Phase-locked loop module for give modulator and demodulator provide this
Shake signal.Local oscillator module provides local oscillation signal to modulating demodulation module.Low-pass filtering module is front to modulation and solves
Intermediate-freuqncy signal after tune is filtered.AD/DA modules complete the conversion of analog to digital and digital to analogy.Work(
Amplification module will launch low level signal amplification to rated output power.Coupling module in selecting switch completes signal coupling
Close, coupling firing signal energy is supplied to feedback link to carry out power detection, realizes transmission power control, in advance
Several functions are adopted in distortion, and selecting module completes multichannel forward and backward signal behavior function.Digital Signal Processing
Module completes digital signal computing and digital processing function.
The hardware structure explanation of the zero intermediate frequency transmitting and receiving system for providing for the present embodiment above, another key point
For the solution that the automatic calibration function of zero intermediate frequency transceiver is realized and is engaged with RRU systemic-functions.
Automatic calibration function includes the calibration and reception to launching local oscillator and image frequency/feedback direct current offset and image frequency
Calibration, can specifically divide into transmitting local oscillator leakage off-line calibration, launch image frequency off-line calibration, receive and anti-
Feedback off-line calibration, receives and feeds back image frequency off-line calibration, launch local oscillator leakage, launches image frequency and receives and anti-
The on-line calibration of feedback image frequency.
Off-line calibration all adopts transceiver module internal calibration source generation single-tone, frequency sweep or modulated signal to complete school
Standard, on-line calibration all adopt the service signal of transceiver to ensure not affecting normally to receive and dispatch complete while communication service
Into real time calibration.
As shown in figure 4, RRU system piece calibration flow charts are repeated no more, description is received and is launched respectively now
Calibration detailed process.
Calibration function is received as off-line calibration can not be completed simultaneously when RRU is initialized with other channel multiplexings
On-line calibration is enabled, as shown in figure 5, receive calibration flow process repeat no more, wherein, connect by building
Receive filter coefficient in IQ branches and achieve a butt joint receipts link the amplitude and unbalance in phase of simulating IQ branches
The calibration of image frequency.
For transmitting calibration due to real time calibration process need take feedback control link, such real time calibration with
The digital pre-distortion algorithm of transmitter, power detection and standing wave detection functional incompatibility, so needing to transmitting-receiving letter
On machine, electric current journey and real time calibration flow process carry out software control.
Based on this, as shown in fig. 6, transmitting calibration flow process includes：On RRU first, electric transmission channel is enabled,
Off-line calibration is carried out initially with internal calibration source, now in order to protect power amplifier before calibration starts first by power amplifier
Closing carries out off-line calibration to feedback channel and transmission channel again successively, by building LPF filters on transmitting chain
Ripple device coefficient carrys out the amplitude and unbalance in phase of analog transmissions link IQ branches and realizes that transmitted sideband is calibrated.Offline
Internal calibration source is closed after the completion of calibration, transmitter normally sends business datum while carrying out DPD (Digital
Pre Distortion, digital pre-distortion) detection, standing wave detection, power detection, while start determining
When, it is stipulated that stop DPD, standing wave detection, power detection, using business datum after time cycle arrival
Start to launch the on-line calibration function with feedback link, after the completion of calibration, recover DPD, standing wave detection and power are examined
The function of survey.For TDD system needs to judge transmitting-receiving switching time slot, received receiving when work is enabled
On-line calibration, carries out transmitting on-line calibration launching when work is enabled.In order to ensure to calibrate the vigorousness of flow process,
Some error flags and counter-measure can be set.
Fourth embodiment：
The present embodiment provides a kind of transceiver of the double transmittings (2T2R) of double reception, as shown in Figure 7：
The 2T2R transceivers that the present embodiment is provided, are to penetrate to connect receiver by the single reception single-shot shown in Fig. 3
Receiving path and transmitting path are replicated, using the public feedback control link of the mode of time-sharing multiplex,.Its
Middle controllable gain amplification module can adopt attenuator and amplifier Integrated Solution to realize.
Upper electric RRU starts and calibrate flow process to be included：It is board software and hardware initialization, light first after upper electricity
The loading of chip version is run after mouth self adaptation, chip initiation configuration is carried out in the case where power amplifier state is closed, is completed
Descending image frequency and sideband off-line calibration, now require that power amplifier output coupling loop is disconnected so electrical switch is got to
ALL OFF states, finally trigger up off-line calibration, and after the completion of off-line calibration, RRU carries out the stream such as power calibration
Journey, sets the iterationses of every time calibration in a calibration process, after the completion of return success value.If calibrated
Occur mistake in journey, then report error code chip reset to recalibrate, continuous five run-time errors report event
Barrier quits work.
On-line calibration flow process includes：Calibration cycle is set, and on-line calibration is the controlled state of electrical switch by FPGA
(Field-Programmable Gate Array, field programmable gate array) switches to CPU to control manually,
The service signal of correspondence transmission channel is fixed as, FPGA is when it is manual mode to switch electrical switch, it is desirable to cut
Change a little within two complete electrical switch switching cycle interval times, that is, ensure the complete of electrical switch cycle
Whole property.When calibration starts, RRU needs to stop DPD and standing wave detection, stops power detection, switches electronics
Switch as corresponding service signal passage, after the completion of calibration, it is FPGA auto states that CPU enables electrical switch,
Power detection is enabled, DPD and standing wave detection function is enabled.In a calibration process in the event of error message,
Need to judge error message, for do not affect performance and using information give and shield, for performance is damaged
Wound does not affect the error message of function to provide alarm, even writes for disabled information provides alarm notification
Daily record.
In summary, by the enforcement of the present invention, at least there is following beneficial effect：
The invention provides a kind of transceiver, the transceiver includes feedback control link and calibrating installation,
Feedback control link obtains the transmission signal of transmitting path, calibrates transmitting path according to the transmission signal is counter, together
When, calibrating installation is also achieved to the aisled on-line calibration of institute in transceiver, so allows for transmitting-receiving letter
Machine can improve service behaviour according to machine operation real time calibration, solve existing zero intermediate frequency transmitting-receiving
Problem of the letter machine using service behaviour difference caused by off-line calibration.
The above is only the specific embodiment of the present invention, any pro forma restriction not done to the present invention,
It is every according to the present invention technical spirit embodiment of above is made any simple modification, equivalent variations,
With reference to or modification, still fall within the protection domain of technical solution of the present invention.
Claims (14)
1. a kind of transceiver, it is characterised in that including zero intermediate frequency transmitting path and zero intermediate frequency receiving path,
And：
Feedback control link, for obtaining the transmission signal of the zero intermediate frequency transmitting path, according to the transmitting
Signal generation feedback signal, calibrates the zero intermediate frequency transmitting path according to the feedback signal；
Calibrating installation, for the zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback
Control link carries out on-line calibration.
2. transceiver as claimed in claim 1, it is characterised in that the feedback control link is used for
The transmission power of the zero intermediate frequency transmitting path is determined according to the transmission signal, is generated according to transmission power anti-
Feedback signal, the zero intermediate frequency transmitting path according to the feedback signal assisted calibration.
3. transceiver as claimed in claim 1, it is characterised in that the transceiver includes multiple
Zero intermediate frequency transmitting path, the feedback control link are sent out for each zero intermediate frequency is calibrated by way of time-sharing multiplex
Penetrate path.
4. the transceiver as described in any one of claims 1 to 3, it is characterised in that the calibration cartridge
Put and be additionally operable to enter the zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback control link
Row off-line calibration.
5. transceiver as claimed in claim 4, it is characterised in that the calibrating installation specifically for
In initialization, the power amplification device of the zero intermediate frequency transmitting path is closed；Using the zero intermediate frequency transmitting path
Internal calibration source, to the zero intermediate frequency transmitting path carry out launch local oscillator leakage off-line calibration；Build and profit
With the filter coefficient in the zero intermediate frequency transmitting path, the amplitude and unbalance in phase of analog transmissions branch,
The zero intermediate frequency transmitting path is carried out launching image frequency off-line calibration；Using the inside of the feedback control link
Calibration source, carries out feedback off-line calibration to the feedback control link；Component simultaneously utilizes the feedback control chain
Filter coefficient on road, the amplitude and unbalance in phase of analog feedback branch, to the feedback control link
Carry out feeding back image frequency off-line calibration；Using the internal calibration source of the zero intermediate frequency receiving path, in described zero
Frequency receiving path carries out reception off-line calibration；Build and using the wave filter system in the zero intermediate frequency receiving path
Number, simulation receive the amplitude and unbalance in phase of branch, carry out reception image frequency to the zero intermediate frequency receiving path
Off-line calibration.
6. transceiver as claimed in claim 4, it is characterised in that the calibrating installation is for just
When often working, the power amplification device of the zero intermediate frequency transmitting path is opened；Control the feedback control link to obtain
The transmission signal of the zero intermediate frequency transmitting path, carries out digital pre-distortion detection, stays according to the transmission signal
Ripple is detected and power detection；The zero intermediate frequency receiving path is carried out receiving the online school of image frequency using business datum
It is accurate；After Preset Time, control the feedback control link and stop obtaining sending out for the zero intermediate frequency transmitting path
Signal is penetrated, the zero intermediate frequency transmitting path is carried out launching local oscillator leakage on-line calibration using the business datum
And transmitting image frequency on-line calibration, feedback image frequency is carried out to the feedback control link using the business datum and is existed
Line is calibrated.
7. transceiver as claimed in claim 6, it is characterised in that the Preset Time includes control
Calibration switching cycle or transmitting-receiving switching time slot.
8. a kind of method of work of transceiver, it is characterised in that the transceiver includes that zero intermediate frequency is sent out
Path, zero intermediate frequency receiving path, feedback control link and calibrating installation are penetrated, the method for work includes：
The feedback control link obtains the transmission signal of the zero intermediate frequency transmitting path, according to the transmitting letter
Number feedback signal is generated, the zero intermediate frequency transmitting path is calibrated according to the feedback signal；
The calibrating installation is to the zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback control
Link processed carries out on-line calibration.
9. method of work as claimed in claim 8, it is characterised in that the feedback control link is obtained
The transmission signal of the zero intermediate frequency transmitting path, calibrates the zero intermediate frequency transmitting path according to the transmission signal
Including：The feedback control link determines the transmitting work(of the zero intermediate frequency transmitting path according to the transmission signal
Rate, generates feedback signal according to transmission power, the zero intermediate frequency transmitting according to the feedback signal assisted calibration
Path.
10. method of work as claimed in claim 8, it is characterised in that also include：The transceiver
Including multiple zero intermediate frequency transmitting paths, the feedback control link is calibrated in each zero by way of time-sharing multiplex
Frequency transmitting path.
11. method of works as described in any one of claim 8 to 10, it is characterised in that also include：
The calibrating installation is to the zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback control chain
Road carries out off-line calibration.
12. method of works as claimed in claim 11, it is characterised in that the calibrating installation is to described
Zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback control link carry out off-line calibration to be included：
In initialization, the power amplification device of the zero intermediate frequency transmitting path is closed；Using the zero intermediate frequency transmitting path
Internal calibration source, to the zero intermediate frequency transmitting path carry out launch local oscillator leakage off-line calibration；Build and profit
With the filter coefficient in the zero intermediate frequency transmitting path, the amplitude and unbalance in phase of analog transmissions branch,
The zero intermediate frequency transmitting path is carried out launching image frequency off-line calibration；Using the inside of the feedback control link
Calibration source, carries out feedback off-line calibration to the feedback control link；Component simultaneously utilizes the feedback control chain
Filter coefficient on road, the amplitude and unbalance in phase of analog feedback branch, to the feedback control link
Carry out feeding back image frequency off-line calibration；Using the internal calibration source of the zero intermediate frequency receiving path, in described zero
Frequency receiving path carries out reception off-line calibration；Build and using the wave filter system in the zero intermediate frequency receiving path
Number, simulation receive the amplitude and unbalance in phase of branch, carry out reception image frequency to the zero intermediate frequency receiving path
Off-line calibration.
13. method of works as claimed in claim 11, it is characterised in that the calibrating installation is to described
Zero intermediate frequency transmitting path, the zero intermediate frequency receiving path and the feedback control link carry out on-line calibration to be included：
In normal work, the power amplification device of the zero intermediate frequency transmitting path is opened；Control the feedback control link
Obtain the transmission signal of the zero intermediate frequency transmitting path, according to the transmission signal carry out digital pre-distortion detection,
Standing wave is detected and power detection；Reception image frequency is carried out to the zero intermediate frequency receiving path using business datum online
Calibration；After Preset Time, control the feedback control link and stop obtaining the zero intermediate frequency transmitting path
Transmission signal, carries out launching the online school of local oscillator leakage to the zero intermediate frequency transmitting path using the business datum
Accurate and transmitting image frequency on-line calibration, carries out feedback image frequency to the feedback control link using the business datum
On-line calibration.
14. method of works as claimed in claim 13, it is characterised in that the Preset Time includes control
System calibration switching cycle or transmitting-receiving switching time slot.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665005.0A CN106603108B (en) | 2015-10-15 | 2015-10-15 | Transceiver and working method |
| PCT/CN2016/090316 WO2017063415A1 (en) | 2015-10-15 | 2016-07-18 | Transceiver, and operating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665005.0A CN106603108B (en) | 2015-10-15 | 2015-10-15 | Transceiver and working method |
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| CN106603108A true CN106603108A (en) | 2017-04-26 |
| CN106603108B CN106603108B (en) | 2021-06-25 |
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| CN201510665005.0A Active CN106603108B (en) | 2015-10-15 | 2015-10-15 | Transceiver and working method |
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| CN (1) | CN106603108B (en) |
| WO (1) | WO2017063415A1 (en) |
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| CN113691278A (en) * | 2021-10-26 | 2021-11-23 | 广东省新一代通信与网络创新研究院 | Time division mode multi-frequency band transceiver and multi-frequency band signal transmitting and receiving method |
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| CN112422167B (en) * | 2020-10-27 | 2022-12-09 | 北京空间飞行器总体设计部 | Zero-value calibration method for multi-channel high-precision distance measuring transceiver |
| CN114326924B (en) * | 2022-03-03 | 2022-06-17 | 阿里巴巴达摩院(杭州)科技有限公司 | Signal processing method and storage medium |
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Also Published As
| Publication number | Publication date |
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| CN106603108B (en) | 2021-06-25 |
| WO2017063415A1 (en) | 2017-04-20 |
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