CN107707269B - A kind of rf frequency compensation method and device - Google Patents
A kind of rf frequency compensation method and device Download PDFInfo
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- CN107707269B CN107707269B CN201710477599.1A CN201710477599A CN107707269B CN 107707269 B CN107707269 B CN 107707269B CN 201710477599 A CN201710477599 A CN 201710477599A CN 107707269 B CN107707269 B CN 107707269B
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
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Abstract
The invention discloses a kind of frequency offset of radio frequency compensation device and methods, if wherein method includes: to receive data frame signal, offset estimation value is then calculated according to leading in data frame signal by synchronization unit, offset estimation value is transmitted to frequency deviation pre-compensation unit and feedback compensation control unit；The signal frequency value of frequency offset tracking compensating unit tracking frequency offset pre-compensation unit output, to obtain tracing compensation value, and is transmitted to feedback compensation control unit for tracing compensation value；Feedback compensation control unit carries out feedback compensation timing control according to offset estimation value, tracing compensation value, preset tracing compensation coefficient and loop delay time, and the first frequency deviation thermal compensation signal and feedback of output feedback to mixing unit arrive the second frequency deviation thermal compensation signal of frequency deviation pre-compensation unit；Mixing unit and frequency deviation pre-compensation unit are utilized respectively the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal and carry out frequency compensation to data frame signal.The present invention can reduce temperature change to be influenced to radio-frequency performance bring.
Description
Technical field
The present invention relates to radio frequency arts more particularly to a kind of rf frequency compensation method and devices.
Background technique
In recent ten years, a series of researchs about frequency offset of radio frequency compensation circuit have been carried out both at home and abroad, have also achieved very much
Great successes, in certain fields of communication technology, such as low-power consumption bluetooth communication standard debud mode GFSK (Gaussian
Frequency Shift Keying, GFSK Gaussian Frequency Shift Keying) just achieve bigger breakthrough.Low-power consumption bluetooth communication standard tune
Mode GFSK processed has that easy to accomplish, applicable band is wide, strong antijamming capability and inhibits the preferable radio frequency such as out-of-band radiation
Can, but its radio-frequency performance is stronger to the sensibility of temperature, i.e., the frequency of radiofrequency signal can be in transmission of data packets
The variation of environment temperature and generate deviation, the local frequency of radio frequency sending set and radio-frequency transmitter can not complete phase in addition
Deng, objectively also can there are a frequency departure, if that in the case where the more severe temperature jump of environment is bad,
The frequency departure for the radiofrequency signal that radio communication chain circuit receiving end receives will be bigger, and radiofrequency signal is caused not solve successfully
It adjusts, the bit error rate is higher.
Summary of the invention
The embodiment of the present invention provides a kind of frequency offset of radio frequency compensation method and device, can be to receiving end in radio communication chain circuit
The radiofrequency signal received carries out frequency deviation compensation, and effectively reduce temperature change influences to radio-frequency performance bring, so that penetrating
The radiofrequency signal that frequency demodulator can be received with unsuccessful demodulation, reduces the bit error rate.
In a first aspect, the embodiment of the invention provides a kind of frequency offset of radio frequency compensation device, the frequency offset of radio frequency compensation device packet
The mixing unit being successively electrically connected, synchronization unit, frequency deviation pre-compensation unit and frequency offset tracking compensating unit are included, further includes point
It is not electrical with the mixing unit, the frequency offset tracking compensating unit, the synchronization unit and the frequency deviation pre-compensation unit
The feedback compensation control unit of connection, in which:
The synchronization unit, if for receiving data frame signal, leading according to the data frame signal is calculated
The offset estimation value of the data frame signal, and the offset estimation value is transmitted to the frequency deviation pre-compensation unit and described anti-
Feedback compensation control unit；
The frequency offset tracking compensating unit, for tracking the signal frequency value of the frequency deviation pre-compensation unit output, to obtain
The tracing compensation value of the data frame signal is taken, and the tracing compensation value is transmitted to the feedback compensation control unit；
The feedback compensation control unit, for according to the offset estimation value, the tracing compensation value, preset tracking
Penalty coefficient and preset loop delay time carry out feedback compensation timing control, and the of output feedback to the mixing unit
One frequency deviation thermal compensation signal and feedback arrive the second frequency deviation thermal compensation signal of the frequency deviation pre-compensation unit；
The mixing unit, for carrying out frequency benefit to the data frame signal according to the first frequency deviation thermal compensation signal
It repays；
The frequency deviation pre-compensation unit, for carrying out frequency to the data frame signal according to the second frequency deviation thermal compensation signal
Rate precompensation.
Second aspect, the embodiment of the invention provides a kind of frequency offset of radio frequency compensation methodes, are applied to above-mentioned first aspect institute
The frequency offset of radio frequency compensation device stated, wherein the frequency offset of radio frequency compensation method includes:
If receiving data frame signal, the number is calculated according to the leading of the data frame signal by synchronization unit
Frequency deviation pre-compensation unit and feedback compensation control list are transmitted to according to the offset estimation value of frame signal, and by the offset estimation value
Member；
The signal frequency value that the frequency deviation pre-compensation unit output is tracked by frequency offset tracking compensating unit, described in obtaining
The tracing compensation value of data frame signal, and the tracing compensation value is transmitted to the feedback compensation control unit；
By the feedback compensation control unit according to the offset estimation value, the tracing compensation value, preset tracking
Penalty coefficient and preset loop delay time carry out feedback compensation timing control, the first frequency of output feedback to mixing unit
Offset compensation signal and feedback arrive the second frequency deviation thermal compensation signal of the frequency deviation pre-compensation unit；
The first frequency deviation thermal compensation signal and institute are utilized respectively by the mixing unit and the frequency deviation pre-compensation unit
It states the second frequency deviation thermal compensation signal and frequency compensation is carried out to the data frame signal.
The embodiment of the present invention is by way of synchronous frequency deviation feedback compensation, tracking frequency offset feedback compensation and loop delay pair
Data frame signal that radio communication chain circuit receiving end receives carries out frequency offset of radio frequency compensation, effectively reduces temperature change to penetrating
Frequency performance bring influences, so that the data frame signal that the RF demodulator of receiving end can be received with unsuccessful demodulation, reduces
The bit error rate improves the communication performance of wireless communication system.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic block diagram for frequency offset of radio frequency compensation device that one embodiment of the invention provides；
Fig. 2 is a kind of frame lattice for data frame signal that frequency offset of radio frequency compensation device receives that one embodiment of the invention provides
Formula schematic diagram；
Fig. 3 is a kind of the leading of data frame signal that frequency offset of radio frequency compensation device receives that one embodiment of the invention provides
The schematic diagram of sequence；
Fig. 4 is a kind of schematic block diagram for frequency offset of radio frequency compensation device that one embodiment of the invention provides；
Fig. 5 is the signal of feedback compensation control unit in a kind of frequency offset of radio frequency compensation device of one embodiment of the invention offer
Property block diagram；
Fig. 6 is the feedback of feedback control compensation unit in a kind of frequency offset of radio frequency compensation device of one embodiment of the invention offer
Compensate control sequential figure；
Fig. 7 is a kind of schematic flow diagram for frequency offset of radio frequency compensation method that one embodiment of the invention provides；
Fig. 8 is the specific implementation flow of step S703 in a kind of frequency offset of radio frequency compensation method of one embodiment of the invention offer
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.
It is also understood that mesh of the term used in this description of the invention merely for the sake of description specific embodiment
And be not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singular, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
It is that one embodiment of the invention provides a kind of schematic block diagram of frequency offset of radio frequency compensation device referring to Fig. 1.For the ease of
Illustrate, illustrate only part relevant to originally real-time example.
It is shown in Figure 1, a kind of frequency offset of radio frequency compensation device 100 provided in this embodiment, including what is be successively electrically connected
Mixing unit 11, synchronization unit 12, frequency deviation pre-compensation unit 13 and frequency offset tracking compensating unit 14, further include respectively with it is described
Mixing unit 11, the frequency offset tracking compensating unit 14, the synchronization unit 12 and the frequency deviation pre-compensation unit 13 are electrically
The feedback compensation control unit 15 of connection, in which:
The synchronization unit 12, if for receiving data frame signal, according to the leading of the data frame signal
The offset estimation value of the data frame signal is calculated, and the offset estimation value is transmitted to the frequency deviation pre-compensation unit 13
With the feedback compensation control unit 15.
In low-power consumption bluetooth short distance radio communication system, data information is a kind of important mode by frame transmission,
It section can enter low-power consumption mode during idle time in this way, reduce energy consumption, and just enter when thering is information to need to transmit
Information transmission.In the present embodiment, low-power consumption bluetooth short-distance wireless communication is carried out data transmission by frame, shown in Figure 2
For the frame format of the low-power consumption bluetooth short-distance wireless communication GFSK strapping system used in the present embodiment, which is
A kind of general format, including leading, synchronization code word, data field and CRC-24.
Wherein, the leading of data frame start-up portion is used to carry out estimation and compensation that data frame reaches detection, carrier wave frequency deviation
And extract bit synchronization clock therefrom to complete bit synchronization, the form at " 1 " and " 0 " interval is used, good load can be obtained
Wave frequency offset compensation and bit synchronization effect, and its length can be adjusted to obtain preferably according to actual application environment
Effect of optimization.Preferably, the preamble length in the present embodiment in data frame is 8 bytes.
It participates in shown in Fig. 3, in the present embodiment, if the frequency values for the data frame signal that receiving end receives are standard frequency
Value, then the data frame signal it is leading in added up by the sequence that " 0 " and " 1 " interval form after numerical value be 0；If receiving termination
The frequency values of the data frame signal received are there are frequency deviation, then the synchronization unit 12 leading calculates the data frame according to described
The offset estimation value of signal specifically: make even after being added up by leader sequence of the synchronization unit 12 to the data frame signal
Obtain offset estimation value Δ f.
The frequency offset tracking compensating unit 14, the signal frequency value exported for tracking the frequency deviation pre-compensation unit 13,
To obtain the tracing compensation value of the data frame signal, and the tracing compensation value is transmitted to the feedback compensation control unit
15。
In the present embodiment, the synchronization unit 12, can be by the offset estimation after getting initial frequency deviation estimated value
It is worth while exports to feedback compensation control unit 15 and the frequency offset tracking compensating unit 14, at this time since synchronization unit 12 exports
Primary data frame signal be without mixing unit 11 carry out frequency feedback compensation deals, it is therefore desirable to mended in advance by the frequency deviation
It repays unit 13 and frequency deviation pre-compensation is carried out to the data frame signal that synchronization unit 12 exports using the offset estimation value, then export
Data frame signal after precompensation is to the frequency offset tracking compensating unit 14；The frequency offset tracking compensating unit 14 is receiving number
After frame signal, the frequency values of the data frame signal can be obtained, frequency values and the standard frequency for the data frame that then will acquire
Rate value is compared, and tracing compensation value is calculated, the tracing compensation value is then fed back to the feedback compensation control again
Unit 15 processed.
The feedback compensation control unit 15, for according to the offset estimation value, the tracing compensation value, it is preset with
Track penalty coefficient and preset loop delay time carry out feedback compensation timing control, and output feedback arrives the mixing unit 11
The first frequency deviation thermal compensation signal and feedback arrive the frequency deviation pre-compensation unit 13 the second frequency deviation thermal compensation signal.
In the present embodiment, it is stored in advance in the feedback compensation control unit 15 and is transmitted by 11 signal of mixing unit
To the loop delay time and tracing compensation coefficient of the frequency deviation pre-compensation unit 13, the loop delay time and the tracking
Penalty coefficient can be preset by reception end subscriber, the feedback compensation control unit 15 receive the offset estimation value and
It, can be according to the offset estimation value, the tracing compensation value, the loop delay time and institute after the tracing compensation value
It states tracing compensation coefficient and carries out feedback compensation timing control, output feeds back to the first frequency deviation thermal compensation signal of the mixing unit 11
The second frequency deviation thermal compensation signal that the frequency deviation pre-compensation unit 13 is arrived with feedback, so that the mixing unit 11 and the frequency deviation are pre-
Compensating unit 13 is utilized respectively the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal receives the receiving end
The data frame signal arrived carries out frequency compensation.
The mixing unit 11, for carrying out frequency benefit to the data frame signal according to the first frequency deviation thermal compensation signal
It repays.
In the present embodiment, the input terminal of the mixing unit 11 is the input of the frequency offset of radio frequency pre-compensation unit
End, the first frequency deviation for the data frame signal and the feedback compensation control unit 15 feedback that receive the transmission of radio-frequency transmissions end are mended
Signal is repaid, and the first frequency deviation thermal compensation signal received and the data frame signal are subjected to Frequency mixing processing, to the data
The frequency deviation of frame signal compensates, and reduces the frequency offset of radio frequency of the data frame signal.
The frequency deviation pre-compensation unit 13, for being carried out according to the second frequency deviation thermal compensation signal to the data frame signal
Frequency precompensation.
In the present embodiment, the frequency deviation pre-compensation unit 13 is receiving what the feedback compensation control unit 15 was sent
After second frequency deviation thermal compensation signal, the data frame signal that the synchronization unit 12 can be exported using the second frequency deviation thermal compensation signal
Carry out frequency precompensation.It should be noted that the second frequency deviation thermal compensation signal and the first frequency deviation thermal compensation signal be with
The variation of time and change, and the two variation direction be it is opposite, the frequency deviation pre-compensation unit 13 is primarily to right
Primary data frame signal just initially received, that frequency feedback compensation deals are carried out without mixing unit 11 carries out frequency and mends in advance
It repays, after mixing unit 11 gets the first frequency thermal compensation signal of the output of feedback compensation control unit 15, and according to described the
After one frequency compensation signal carries out frequency compensation to the data frame signal, the frequency pre-compensation unit then can be according to described the
The compensation intensity for the data frame signal that the adjustment of two frequency compensation signals exports the synchronization unit 12, such as: if the data
Frame signal has reached standard frequency value after the mixing unit 11 carries out frequency compensation, then the frequency deviation pre-compensation unit 13
Compensation intensity is then reduced to zero.
Preferably, shown in Figure 4, in another embodiment of the present invention, the frequency offset of radio frequency compensation device 100 is also
Including the digital filtering unit being connected between the mixing unit 11 and the synchronization unit 12, in which:
The digital filtering unit 16, the data frame signal for exporting to the mixing unit 11 carry out at digital filtering
Reason.
In the present embodiment, since the data frame signal exported using digital filtering unit 16 to mixing unit 11 is counted
According to filtering processing, so as to filter out the noise signal in the data frame signal, estimate convenient for subsequent data frame signal frequency deviation
Meter and modulation /demodulation.
In addition, in the present embodiment, since the first frequency deviation thermal compensation signal feedback is mixed before data filtering unit to being located at
Frequency unit 11 carries out frequency offset of radio frequency compensation to data frame signal before digital filtering, and the standard of frequency deviation compensation can be improved in this way
True property, the effective demodulation performance for promoting receiving end RF demodulator.
Preferably, shown in Figure 4, in another embodiment of the present invention, the frequency offset of radio frequency compensation device 100 is also
Including the zero passage detection unit being electrically connected with the frequency offset tracking compensating unit 14, in which:
The zero passage detection unit 17, the data frame signal for exporting to the frequency offset tracking compensating unit 14 carried out
Zero detection.
In the present embodiment, due to carrying out zero passage inspection in the data frame signal exported to the frequency offset tracking compensating unit 14
After survey, in the rear class radio frequency decoding circuit of output to the receiving end, it can play the role of protecting late-class circuit in this way.
Above as can be seen that a kind of frequency offset of radio frequency compensation device 100 provided in this embodiment is due to anti-by synchronous frequency deviation
The mode of feedback compensation, tracking frequency offset feedback compensation and loop delay believes the data frame that radio communication chain circuit receiving end receives
Number carry out frequency offset of radio frequency compensation, effectively reduce temperature change give radio-frequency performance bring influence so that the radio frequency of receiving end
The data frame signal that demodulator can be received with unsuccessful demodulation, reduces the bit error rate, improves the communicativeness of wireless communication system
Energy.
It is shown in Figure 5, it is feedback compensation control unit in frequency offset of radio frequency compensation device 100 in one embodiment of the invention
15 schematic block diagram.It illustrate only part related to the present embodiment for ease of description.
It is shown in Figure 5, relative to a upper embodiment, in the present embodiment, the feedback compensation control unit 15 include according to
The tracking feedback compensation value computing unit 151 of secondary electric connection, the first feedback compensation timing control unit 152 and the second feedback are mended
Repay timing control unit 153, in which:
The tracking feedback compensation value computing unit 151, for according to the tracing compensation value and the tracing compensation system
Tracking feedback compensation value is calculated in number；
The first feedback compensation timing control unit 152, for being mended according to the offset estimation value, tracking feedback
Repay value and preset first feedback compensation climbing time and the first climbing step, output feedback to the of the mixing unit 11
One frequency deviation thermal compensation signal；
The second feedback compensation timing control unit 153, when for according to the offset estimation value, the loop delay
Between and preset second feedback compensation climbing the time and second climbing step, output feedback arrive the frequency deviation pre-compensation unit 13
The second frequency deviation thermal compensation signal；Wherein, the climbing direction of the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal
On the contrary, the climbing time is equal.
Preferably, in the present embodiment, the tracing compensation coefficient be can be preset by user, the tracking is anti-
Compensation value calculation unit 151 is presented after receiving the tracing compensation value, the tracing compensation value can be calculated and the tracking is mended
The product value between coefficient is repaid, the product value is the tracking feedback compensation value.
Preferably, in the present embodiment, the first feedback compensation timing control unit 152, is receiving the frequency deviation
It, can be defeated to control according to the offset estimation value and the tracing compensation value of feedback after estimated value and the tracing compensation value of feedback
Out to the first frequency deviation thermal compensation signal of the mixing unit 11, in the present embodiment, the compensation of frequency is not stranghtforward, and
It is that target frequency is slowly drawn to according to preset climbing time and climbing step.Specifically, in the present embodiment, by institute
State climbing height of the offset estimation value as the first frequency deviation thermal compensation signal, the first feedback compensation timing control unit
152 when receiving the enable signal of the offset estimation value, i.e., according to the preset climbing time, climbing step and can climb
Slope height come control output to the mixing unit 11 the first frequency deviation thermal compensation signal；After the completion of climbing, when described first anti-
When feedback compensation timing unit receives frequency offset tracking enable signal, it can be adjusted the output to further according to the frequency offset tracking value of feedback
The first frequency thermal compensation signal of the mixing unit 11.The synchronization unit 12 is in output offset estimation value to the feedback compensation
While control unit 15, offset estimation enable signal can be exported to the feedback compensation control unit 15；The frequency offset tracking
Compensating unit 14 can export the enabled letter of frequency offset tracking while exporting frequency offset tracking value to feedback compensation control unit 15
Number to the feedback and tracking compensate control unit.
Preferably, in the present embodiment, the second feedback compensation timing control unit 153, is receiving the frequency deviation
After estimated value, preset loop delay time can be waited, then further according to the offset estimation value and preset second feedback
Compensation climbing time and the second climbing step, the second feedback frequency deviation compensation letter of output feedback to the frequency deviation pre-compensation unit 13
Number；The climbing of the second frequency deviation thermal compensation signal and the first frequency deviation thermal compensation signal is contrary, the climbing time is opposite.Referring to
Shown in Fig. 6, it illustrates in the present embodiment, feedback frequency deviation compensates control sequential figure, wherein Freqofst_syn_esti_en table
Show offset estimation enable signal, Freqofst_syn_esti indicates offset estimation value, and Freqofst_mix indicates that the first frequency deviation is mended
Signal is repaid, Freqost_pre_comp indicates the second frequency deviation thermal compensation signal, and Freqost_trk_en indicates the enabled letter of frequency offset tracking
Number, Freqoft_trk_fb_en indicates that frequency offset tracking feeds back enable signal, and Freqofst_trk_fb indicates frequency offset tracking compensation
Value.
Above as can be seen that a kind of frequency offset of radio frequency compensation device 100 provided in this embodiment is also due to pass through synchronizing band
The data that the mode of inclined feedback compensation, tracking frequency offset feedback compensation and loop delay receives radio communication chain circuit receiving end
Frame signal carries out frequency offset of radio frequency compensation, and effectively reduce temperature change influences to radio-frequency performance bring, so that receiving end
The data frame signal that RF demodulator can be received with unsuccessful demodulation, reduces the bit error rate, improves the logical of wireless communication system
Believe performance.
Fig. 7 is a kind of schematic flow diagram for frequency offset of radio frequency compensation method that one embodiment of the invention provides, this method application
The frequency offset of radio frequency compensation device 100 described in FIG. 1 to FIG. 6 illustrated embodiment.
It is shown in Figure 7, a kind of frequency offset of radio frequency compensation method provided in this embodiment, comprising the following steps:
Step S701, if receiving data frame signal, by synchronization unit 12 according to the leading of the data frame signal
It calculates the offset estimation value of the data frame signal, and the offset estimation value is transmitted to frequency deviation pre-compensation unit 13 and anti-
Feedback compensation control unit 15；
Step S702 tracks the signal frequency that the frequency deviation pre-compensation unit 13 exports by frequency offset tracking compensating unit 14
Value, to obtain the tracing compensation value of the data frame signal, and is transmitted to the feedback compensation control for the tracing compensation value
Unit 15；
Step S703, by the feedback compensation control unit 15 according to the offset estimation value, the tracing compensation value,
Preset tracing compensation coefficient and preset loop delay time carry out feedback compensation timing control, and output feedback is single to mixing
The the first frequency deviation thermal compensation signal and feedback of member 11 arrive the second frequency deviation thermal compensation signal of the frequency deviation pre-compensation unit 13；
Step S704 is utilized respectively first frequency deviation by the mixing unit 11 and the frequency deviation pre-compensation unit 13
Thermal compensation signal and the second frequency deviation thermal compensation signal carry out frequency compensation to the data frame signal.
Preferably, Fig. 8 shows the specific implementation flow chart of step 703, shown in Figure 8, and step S703 is specifically included:
Step S801 is mended by tracking feedback compensation value computing unit 151 according to the tracing compensation value and the tracking
It repays coefficient and tracking feedback compensation value is calculated；
Step S802 is anti-according to the offset estimation value, the tracking by the first feedback compensation timing control unit 152
Offset and preset first feedback compensation climbing time and the first climbing step are presented, output feedback arrives the mixing unit 11
The first frequency deviation thermal compensation signal；
Step S803 is prolonged by the second feedback compensation timing control unit 153 according to the offset estimation value, the loop
Slow time and preset second feedback compensation climbing time and the second climbing step, output feedback arrive the frequency deviation pre-compensation list
Second frequency deviation thermal compensation signal of member 13；Wherein, the climbing of the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal
It is contrary, climbing the time it is equal.
Preferably, in an embodiment of the invention, the frequency offset of radio frequency compensation method further include:
Digital filtering processing is carried out to the data frame signal that the mixing unit 11 exports by digital filtering unit 16.
Preferably, in an embodiment of the invention, the frequency offset of radio frequency compensation method further include:
Zero passage inspection is carried out to the data frame signal that the frequency offset tracking compensating unit 14 exports by zero passage detection unit 17
It surveys.
It should be noted that each step in embodiment of the method provided in this embodiment is due to apparatus of the present invention embodiment
Based on same design, bring technical effect is identical as apparatus of the present invention embodiment, and particular content can be found in apparatus of the present invention
Narration in embodiment, details are not described herein again.
Thus, it will be seen that a kind of frequency offset of radio frequency compensation method provided in an embodiment of the present invention is also due to pass through synchronization
The number that the mode of frequency deviation feedback compensation, tracking frequency offset feedback compensation and loop delay receives radio communication chain circuit receiving end
Frequency offset of radio frequency compensation is carried out according to frame signal, effectively reduce temperature change influences to radio-frequency performance bring, so that receiving end
The data frame signal that can be received with unsuccessful demodulation of RF demodulator, reduce the bit error rate, improve wireless communication system
Communication performance.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond the scope of this invention.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.In addition, shown or discussed phase
Mutually between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection is also possible to electricity, mechanical or other form connections.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.Some or all of unit therein can be selected to realize the embodiment of the present invention according to the actual needs
Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (8)
1. a kind of frequency offset of radio frequency compensation device, which is characterized in that the frequency offset of radio frequency compensation device includes successively being electrically connected
Mixing unit, synchronization unit, frequency deviation pre-compensation unit and frequency offset tracking compensating unit further include being mixed list with described respectively
The feedback compensation that first, the described frequency offset tracking compensating unit, the synchronization unit and the frequency deviation pre-compensation unit are electrically connected
Control unit, in which:
The synchronization unit, if for receiving data frame signal, according to the data frame signal it is leading calculate it is described
The offset estimation value of data frame signal, and the offset estimation value is transmitted to the frequency deviation pre-compensation unit and feedback benefit
Repay control unit；
The frequency offset tracking compensating unit, for tracking the signal frequency value of the frequency deviation pre-compensation unit output, to obtain
The tracing compensation value of data frame signal is stated, and the tracing compensation value is transmitted to the feedback compensation control unit；
The feedback compensation control unit, for according to the offset estimation value, the tracing compensation value, preset tracing compensation
Coefficient and preset loop delay time carry out feedback compensation timing control, the first frequency of output feedback to the mixing unit
Offset compensation signal and feedback arrive the second frequency deviation thermal compensation signal of the frequency deviation pre-compensation unit；
The mixing unit, for carrying out frequency compensation to the data frame signal according to the first frequency deviation thermal compensation signal；
The frequency deviation pre-compensation unit, it is pre- for carrying out frequency to the data frame signal according to the second frequency deviation thermal compensation signal
Compensation.
2. frequency offset of radio frequency compensation device as described in claim 1, which is characterized in that the feedback compensation control unit include according to
Tracking feedback compensation value computing unit, the first feedback compensation timing control unit and the second feedback compensation timing of secondary electric connection
Control unit, in which:
The tracking feedback compensation value computing unit, for being calculated according to the tracing compensation value and the tracing compensation coefficient
Feedback compensation value is tracked out；
The first feedback compensation timing control unit, for according to the offset estimation value, the tracking feedback compensation value with
And preset first feedback compensation climbing time and the first climbing step, the first frequency deviation of output feedback to the mixing unit are mended
Repay signal；
The second feedback compensation timing control unit, for according to the offset estimation value, the loop delay time and
Preset second feedback compensation climbing time and the second climbing step, the second frequency of output feedback to the frequency deviation pre-compensation unit
Offset compensation signal；Wherein, the climbing of the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal is contrary, climbs
Time is equal.
3. frequency offset of radio frequency compensation device as described in claim 1, which is characterized in that further include be connected to the mixing unit and
Digital filtering unit between the synchronization unit, in which:
The digital filtering unit, the data frame signal for exporting to the mixing unit carry out digital filtering processing.
4. frequency offset of radio frequency compensation device as described in claim 1, which is characterized in that further include compensating list with the frequency offset tracking
The zero passage detection unit that member is electrically connected, in which:
The zero passage detection unit, the data frame signal for exporting to the frequency offset tracking compensating unit carry out zero passage detection.
5. a kind of frequency offset of radio frequency compensation method, which is characterized in that it is described in any item to be applied to 1~claim 4 of claim
Frequency offset of radio frequency compensation device, wherein the frequency offset of radio frequency compensation method includes:
If receiving data frame signal, the data frame is calculated according to the leading of the data frame signal by synchronization unit
The offset estimation value of signal, and the offset estimation value is transmitted to frequency deviation pre-compensation unit and feedback compensation control unit；
The signal frequency value of the frequency deviation pre-compensation unit output is tracked, by frequency offset tracking compensating unit to obtain the data
The tracing compensation value of frame signal, and the tracing compensation value is transmitted to the feedback compensation control unit；
By the feedback compensation control unit according to the offset estimation value, the tracing compensation value, preset tracing compensation
Coefficient and preset loop delay time carry out feedback compensation timing control, and the first frequency deviation of output feedback to mixing unit is mended
It repays signal and feedback arrives the second frequency deviation thermal compensation signal of the frequency deviation pre-compensation unit；
The first frequency deviation thermal compensation signal and described are utilized respectively by the mixing unit and the frequency deviation pre-compensation unit
Two frequency deviation thermal compensation signals carry out frequency compensation to the data frame signal.
6. frequency offset of radio frequency compensation method as claimed in claim 5, which is characterized in that described to pass through the feedback compensation control list
Member is according to the offset estimation value, the tracing compensation value, preset tracing compensation coefficient and preset loop delay time
Feedback compensation timing control is carried out, the first frequency deviation thermal compensation signal and feedback of output feedback to mixing unit are mended in advance to the frequency deviation
The the second frequency deviation thermal compensation signal for repaying unit includes:
By tracking feedback compensation value computing unit according to the tracing compensation value and the tracing compensation coefficient be calculated with
Track feedback compensation value；
It according to the offset estimation value, the tracking feedback compensation value and is preset by the first feedback compensation timing control unit
The first feedback compensation climbing the time and first climbing step, output feedback to the mixing unit the first frequency deviation compensate letter
Number；
By the second feedback compensation timing control unit according to the offset estimation value, the loop delay time and preset
Second feedback compensation climbing time and the second climbing step, the second frequency deviation compensation of output feedback to the frequency deviation pre-compensation unit
Signal；Wherein, the climbing of the first frequency deviation thermal compensation signal and the second frequency deviation thermal compensation signal is contrary, time phase of climbing
Deng.
7. frequency offset of radio frequency compensation method as claimed in claim 5, which is characterized in that the frequency offset of radio frequency compensation method is also wrapped
It includes:
Digital filtering processing is carried out to the data frame signal that the mixing unit exports by digital filtering unit.
8. frequency offset of radio frequency compensation method as claimed in claim 5, which is characterized in that the frequency offset of radio frequency compensation method is also wrapped
It includes:
Zero passage detection is carried out to the data frame signal that the frequency offset tracking compensating unit exports by zero passage detection unit.
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