CN108540417A

CN108540417A - A kind of method of Automatic Frequency Control, system and automatic frequency controller

Info

Publication number: CN108540417A
Application number: CN201810307460.7A
Authority: CN
Inventors: 杜光东
Original assignee: Shenzhen Shenglu IoT Communication Technology Co Ltd
Current assignee: Shenzhen Shenglu IoT Communication Technology Co Ltd
Priority date: 2018-04-08
Filing date: 2018-04-08
Publication date: 2018-09-14

Abstract

The present invention relates to a kind of method of Automatic Frequency Control, system and automatic frequency controller, this method to include：Signal after being compensated according to frequency deviation determines the current mobile status of user equipment, and generates corresponding tracking filter coefficient, while the tracking velocity using the tracking filter coefficient adjustment in filtering according to the mobile status；According to the tracking velocity after adjustment, the frequency of oscillation variation of local oscillation signal and the frequency variation of the input signal are synchronized.A kind of system is further related to, which includes：User equipment, frequency offset compensation, automatic frequency controller.The tracking velocity of AFC can be promoted to greatest extent while taking into account automatic frequency controller (AFC) tracking accuracy, the radio circuit bit error rate that signal receives during HSDPA is reduced, to improve the performance of user equipment through the invention.

Description

A kind of method of Automatic Frequency Control, system and automatic frequency controller

Technical field

The invention belongs to a kind of field of FREQUENCY CONTROL more particularly to method of Automatic Frequency Control, system and automatic frequencies Rate controller.

Background technology

In the scene of high-speed mobile, such as user is under the scenes such as high ferro, magnetic suspension and vacuum magnetic suspension, due to height Speed is mobile, and the transmitting signal of user can generate frequency displacement due to Doppler effect, and the speed of wave source is faster, and the frequency displacement of generation is got over Greatly, when by base station, positive and negative variation can occur for Doppler frequency shift so that quickly transformation occurs for frequency deviation, and then causes existing AFC devices in radio circuit cannot quickly track the variation of this frequency deviation, and cannot be in time adjusted to this variation, Result in the inaccuracy of measurement so that there are errors with receives frequency for locking frequency, increase high-speed slender body theory (High Speed Downlink Packet Access, HSDPA) the bit error rate, to influence the performance of user equipment.

Invention content

The technical problem to be solved by the present invention is to：In the prior art radio circuit cannot rapidly tracking frequency offset change Change, and this variation cannot be adjusted in time, results in the inaccuracy of measurement, affect the property for influencing user equipment Energy.

For the technical problem for solving above, the present invention provides a kind of method of Automatic Frequency Control, this method includes：

User equipment obtains input signal, and calculates the frequency deviation value of the input signal；

Frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and is mended using the frequency It repays value and frequency deviation compensation is carried out to the input signal；

Automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile status of the user equipment, and Corresponding tracking filter coefficient is generated according to the mobile status；

Adjuster adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient；

Voltage controlled oscillator is according to the tracking velocity, frequency of oscillation variation and the input of the local oscillation signal generated to it The frequency variation of signal synchronizes.

Beneficial effects of the present invention：By above-mentioned method, the signal after being compensated according to frequency deviation is determined to tracking filter system Number, then adjust automatic frequency controller filtering when tracking velocity, in this way can take into account automatic frequency controller AFC with While track precision, the tracking velocity of AFC is promoted to greatest extent, reduces what radio circuit signal during HSDPA received The bit error rate, to improve the performance of user equipment, (i.e. user equipment is extensive after the scene of Doppler frequency shift acute variation disappears Answer under low mobility state) tracking filter coefficient at a slow speed is exported to loop filter, the HSDPA under normal scene is not influenced Energy.

Further, the adjuster adjusts the automatic frequency controller and is filtering according to the tracking filter coefficient When tracking velocity include：

According to the tracking filter coefficient, the path loss Dynamic gene of the user equipment is calculated；

According to the path loss Dynamic gene, the adjusting parameter of the user equipment is determined；

According to the adjusting parameter, tracking velocity of the automatic frequency controller in filtering is adjusted.

Above-mentioned further advantageous effect：By calculating the path loss Dynamic gene of user equipment, and according to the path loss tune Integral divisor determines adjusting parameter, can improve the accuracy that the user equipment carries out uplink transmission in this way, while according to the adjustment Parameter, tracking velocity of the adjustment automatic frequency controller in filtering, in this way can quick tracking filter coefficient, quickly tracking To frequency deviation variation when, while AFC tracking accuracies can be taken into account, to greatest extent promoted AFC tracking velocity.

The invention further relates to a kind of computer storage medias, including instruction, when described instruction is run on computers, make The computer is executed according to method described in any one of the above embodiments.

The invention further relates to a kind of automatic frequency controller, which includes：

Adjust module, sending module；

The adjustment module determines the current mobile status of user equipment, and root for the signal after being compensated according to frequency deviation Corresponding tracking filter coefficient is generated according to the mobile status；

The sending module, for the tracking filter coefficient of generation to be sent to adjuster；

Signal after the wherein described frequency deviation compensation carries out frequency deviation to input signal using frequency compensation value and compensates to obtain, And the frequency compensation value is determined according to the frequency deviation value that the input signal of acquisition calculates.

Beneficial effects of the present invention：By above-mentioned automatic frequency controller, the signal determination after being compensated according to frequency deviation is arrived Then tracking filter coefficient adjusts tracking velocity of the automatic frequency controller in filtering, can take into account AFC tracking essences in this way While spending, the tracking velocity of AFC is promoted to greatest extent, reduces the radio circuit error code that signal receives during HSDPA Rate, to improve the performance of user equipment, (i.e. user equipment restores low after the scene of Doppler frequency shift acute variation disappears Under fast mobile status) to loop filter output tracking filter coefficient at a slow speed, the HSDPA performances under normal scene are not influenced.

The invention further relates to a kind of system of Automatic Frequency Control, which includes：

User equipment, frequency offset compensation, automatic frequency controller, adjuster and voltage controlled oscillator；

The user equipment, for obtaining input signal；

The frequency offset compensation calculates the frequency deviation value of the input signal, simultaneously for the input signal according to acquisition According to the frequency deviation value, the frequency compensation value of the input signal is determined, and believe the input using the frequency compensation value Number carry out frequency deviation compensation；

The automatic frequency controller determines the current mobile shape of user equipment for the signal after being compensated according to frequency deviation State, and corresponding tracking filter coefficient is generated according to the mobile status；

The adjuster adjusts tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

The voltage controlled oscillator, user is according to the tracking velocity after adjustment, the oscillation of the local oscillation signal generated to it Frequency changes to be synchronized with the variation of the frequency of the input signal.

Beneficial effects of the present invention：By above-mentioned system, the frequency deviation value of input signal is calculated, according to this frequency deviation value Frequency compensation value is calculated, frequency deviation compensation is carried out to input signal, the accuracy error of input signal can be reduced in this way, in addition root Signal after being compensated according to frequency deviation is determined to tracking filter coefficient, then adjusts tracking speed of the automatic frequency controller in filtering Degree can promote the tracking velocity of AFC to greatest extent, reduce radio circuit and exist while taking into account AFC tracking accuracies in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in the field of Doppler frequency shift acute variation (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter after scape disappears, and does not influence HSDPA performances under normal scene.

Further, the automatic frequency controller, specifically for identical phase in the N sections control signal after compensating frequency deviation The control signal of position and frequency band removes, and connects remaining control signal to form full dose control signal；And according to described Full dose control signal determines the current mobile status of the user equipment, and generates corresponding tracking according to the mobile status and filter Wave system number.

Above-mentioned further advantageous effect：The N sections of control signal splicing is filtered into complete full dose and controls signal, is removed Some noise signal segments present in N sections of control signals improve the precision to input signal, while being controlled further according to the full dose Signal determines the current mobile status of the user equipment, and generates corresponding tracking filter coefficient according to the mobile status, in this way So that subsequently tracking velocity of the automatic frequency controller in filtering is adjusted, according to tune according to the tracking filter coefficient of output Tracking velocity after whole synchronizes the frequency of oscillation variation of local oscillation signal and the frequency variation of the input signal, in this way may be used To adjust the frequency of local oscillation signal in time so that the frequency of local oscillation signal is believed close to the frequency of input signal to reduce local oscillator Number with receive input signal frequency error.

Further, the automatic frequency controller is additionally operable to carry out sliding window processing to full dose control signal, raw At front window accumulated value and rear window accumulated value；

The front window accumulated value is compared with the rear window accumulated value, obtains the difference of the two；

According to the difference, the user equipment current first movement state and the second mobile status are determined；

And the first tracking filter coefficient of the user equipment is generated under the first movement state, it is moved described second The second tracking filter coefficient of the user equipment is generated under dynamic state；

Wherein first movement state and the second mobile status respectively according to the different movement speeds of the user equipment into Row divides, and under first movement state and the second mobile status, and the Doppler frequency shift variation degree of the input signal is different.

Above-mentioned further advantageous effect：The first tracking filter system of the user equipment is generated under first movement state Number, the second tracking filter coefficient of the user equipment is generated under the second mobile status, passes through the first and second tracking filter systems Number can adjust tracking of the automatic frequency controller in filtering with averaged according to the tracking filter coefficient of average value Speed can promote the tracking velocity of AFC to greatest extent, reduce radio circuit while taking into account AFC tracking accuracies in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment.

Further, the automatic frequency controller is specifically used for, according to the tracking filter coefficient, calculating the use The path loss Dynamic gene of family equipment；

Description of the drawings

Fig. 1 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 1；

Fig. 2 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 2；

Fig. 3 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 3；

Fig. 4 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 4；

Fig. 5 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 5；

Fig. 6 is a kind of flow chart of the method for Automatic Frequency Control of the embodiment of the present invention 6；

Fig. 7 is a kind of schematic diagram of computer storage media of the embodiment of the present invention 7；

Fig. 8 is a kind of schematic diagram of automatic frequency controller of the embodiment of the present invention 8；

Fig. 9 is a kind of schematic diagram of the system of Automatic Frequency Control of the embodiment of the present invention 9.

Specific implementation mode

The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the present invention.

Embodiment 1

As shown in Figure 1, the embodiment of the present invention 1 provides a kind of method of Automatic Frequency Control, this method includes：

S11, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S12, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S13, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S14, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S15, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes.

It is understood that the input signal can be radiofrequency signal in the present embodiment 1, or baseband signal, And in embodiments of the present invention the mobile status of (user equipment) UE can be divided into according to actual needs high-speed moving state and Low mobility state, therefore be directed to different mobile status selections and generate different tracking filter coefficients.In addition in this implementation User equipment can also receive radiofrequency signal by radio circuit in example 1, and the radiofrequency signal is converted to baseband signal (example Such as：WCDMA it) is used as input signal, can also be directly using the radiofrequency signal of acquisition as input signal, (i.e. UE is in high speed and moves Under dynamic state) to automatic frequency controller export quick tracking filter coefficient, and according to the tracking filter coefficient adjustment of output with Track speed, in the present embodiment 1 before output tracking filter factor be need to obtain the signal after frequency precompensation, and these Signal after frequency precompensation is the input signal that frequency offset compensation is obtained according to user equipment in user equipment high-speed mobile And the frequency deviation value calculated using special algorithm, when the user equipment under high-speed mobile environment receives the frequency of signal close to base It stands the frequency (being ideally equal to) being arranged in itself, therefore terminal need not consume too many resource and carry out frequency deviation correction, directly Demodulation is connect, even if ensure that user equipment is exporting tracking filter coefficient at a slow speed, to not influence under normal scene HSDPA performances.The variation of input signal frequency deviation can be quickly traced into additionally, due to automatic frequency controller, so that follow-up Adjuster adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient of output, and voltage-controlled shakes Device is swung according to the tracking velocity, and the frequency of oscillation variation of the local oscillation signal generated is carried out with the frequency variation of the input signal It is synchronous, the frequency of local oscillation signal can be adjusted in time in this way, to approach the frequency of input signal, to reduce local oscillation signal and to connect The frequency error of the input signal of receipts makes the oscillation frequency of voltage controlled oscillator in addition it can the diminishing error signal of convergence Rate, which deviates, to be reduced, and to which local oscillation signal is pulled to rated value, and then is realized that convergence automatic frequency is adjusted, is kept AFC loops final Reach equilibrium state, that realizes frequency automatically controls locking, and input signal and the frequency of local oscillation signal are realized in the present embodiment 1 Synchronous variation, radio circuit is able to capture in time or the frequency of track transmitter reduces signal thus during HSDPA The bit error rate of reception, to improve the performance of UE.

1 method through this embodiment, the signal after being compensated according to frequency deviation are determined to tracking filter coefficient, are then adjusted certainly Tracking velocity of the dynamic frequency controller in filtering, can to greatest extent be promoted while taking into account AFC tracking accuracies in this way The tracking velocity of AFC reduces the radio circuit bit error rate that signal receives during HSDPA, to improve user equipment Performance, (i.e. user equipment restore low mobility state under) is to loop filter after the scene of Doppler frequency shift acute variation disappears Wave device exports tracking filter coefficient at a slow speed, does not influence the HSDPA performances under normal scene.

Embodiment 2

As shown in Fig. 2, the present embodiment 2 is another example scheme in the scheme of above-described embodiment 1, the present embodiment 2 A kind of method of Automatic Frequency Control is provided, this method includes：

S21, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S22, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S23, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S24, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S25, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes.

It is understood that the input signal can be radiofrequency signal in the present embodiment 2, or baseband signal, And in embodiments of the present invention, the mobile status of (user equipment) UE can be divided into according to actual needs high-speed moving state and Low mobility state is directed to different mobile status selections and generates different tracking filter coefficients.In addition in the present embodiment 2 User equipment can also by radio circuit receive radiofrequency signal, and by the radiofrequency signal be converted to baseband signal (such as： WCDMA it) is used as input signal, can also be directly using the radiofrequency signal of acquisition as input signal, (i.e. UE is in high-speed mobile shape Under state) to the quick tracking filter coefficient of automatic frequency controller output, and speed is tracked according to the tracking filter coefficient adjustment of output Degree in the present embodiment 1 is to need to obtain the signal after frequency precompensation before output tracking filter factor, and these frequencies Signal after precompensation is in user equipment high-speed mobile, and frequency offset compensation is adopted according to the input signal that user equipment obtains The frequency deviation value calculated with special algorithm, when the user equipment under high-speed mobile environment receives the frequency of signal close to base station sheet The frequency (being ideally equal to) of body setting, therefore terminal need not consume too many resource and carry out frequency deviation correction, directly solve Tune, even if ensure that user equipment is exporting tracking filter coefficient at a slow speed, to not influence the HSDPA under normal scene Energy.The variation of input signal frequency deviation can be quickly traced into additionally, due to automatic frequency controller, so that subsequently adjust Device adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient of output, and voltage controlled oscillator According to the tracking velocity, the frequency of oscillation variation of the local oscillation signal generated carries out same with the frequency variation of the input signal Step, can adjust the frequency of local oscillation signal in time in this way, to approach the frequency of input signal, to reduce local oscillation signal and to receive Input signal frequency error.

Optionally, carrying out frequency deviation compensation to input signal using frequency compensation value described in the present embodiment 2 includes：

The input signal is divided into N segment signals by S221 according to AFC code words, wherein the N segment signals are and the AFC The distribution character curve of code word is corresponding one by one, and the N is the natural number more than 0；

S222 is filtered the N segment signals, obtains N sections of control signals；

S223 carries out frequency deviation compensation to described N sections control signal respectively using the frequency compensation value.

It is understood that input signal is divided into N segment signals according to AFC code words in 2 frequency deviation compensator of the present embodiment (wherein the N segment signals are corresponding one by one with the distribution character curve of the AFC code words, which is the natural number more than 0), then The N segment signals are filtered, N sections of control signals are obtained, then according to the frequency compensation value, respectively to the N sections of control signal Carry out frequency deviation compensation.

The input signal of frequency deviation is first divided into n sections of actual code segment signals according to AFC code words in the present embodiment 2, and respectively This n sections of actual code segment signal is linearly melted into n sections of liner code segment signals, then measures of each section of liner code segment signal respectively The only corresponding frequency compensation value of code word, and the slope of each section of liner code segment signal is calculated separately out, finally by each section of line Property code segment signal slope and start-stop code word and the corresponding frequency compensation value of the start-stop code word calculate the N sections after calibration and control Signal completes the calibration to input signal.

By using AFC code words in the present embodiment 2, the input signal is divided into N segment signals, it in this way can be than existing The N segment signal errors obtained to non-linear frequency deviation-AFC code words distribution character curve matching with the mode of straight line in technology are small very It is more, the precision of input signal can be greatly improved, the influence of other noise signals is reduced, subsequent control essence can also be improved Degree.

In 2 frequency deviation compensator of the present embodiment according to AFC code words, the input signal is divided into N segment signals, then to the N Segment signal is filtered, and obtains N sections of control signals；Then according to the frequency compensation value, signal is controlled into line frequency to the N sections respectively Offset compensation, to be calibrated to input signal, can greatly improve defeated in this way by increasing the frequency deviation compensation to input signal Enter the precision of signal, reduces the influence of other noise signals, subsequent control accuracy can also be improved, mended according further to frequency deviation Signal after repaying is determined to tracking filter coefficient, is then adjusted tracking velocity of the automatic frequency controller in filtering, in this way may be used While taking into account AFC tracking accuracies, to promote the tracking velocity of AFC to greatest extent, reduce radio circuit in HSDPA processes The bit error rate that middle signal receives, to improve the performance of user equipment, after the scene of Doppler frequency shift acute variation disappears (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter, does not influence normal scene Under HSDPA performances.

Embodiment 3

As shown in figure 3, the present embodiment 3 is the another program implemented in the scheme of above-described embodiment 2, in the present embodiment 3 A kind of method of Automatic Frequency Control is provided, this method includes：

S31, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S32, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S33, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S34, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S35, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes.

Optionally, carrying out frequency deviation compensation to input signal using frequency compensation value described in the present embodiment 3 includes：

The input signal is divided into N segment signals by S321 according to AFC code words, wherein the N segment signals are and the AFC The distribution character curve of code word is corresponding one by one, and the N is the natural number more than 0；

S322 is filtered the N segment signals, obtains N sections of control signals；

S323 carries out frequency deviation compensation to described N sections control signal respectively using the frequency compensation value.

It is understood that input signal is divided into N segment signals according to AFC code words in 3 frequency deviation compensator of the present embodiment (wherein the N segment signals are corresponding one by one with the distribution character curve of the AFC code words, which is the natural number more than 0), then The N segment signals are filtered, N sections of control signals are obtained, then according to the frequency compensation value, respectively to the N sections of control signal Carry out frequency deviation compensation.

The input signal of frequency deviation is first divided into n sections of actual code segment signals according to AFC code words in the present embodiment 3, and respectively This n sections of actual code segment signal is linearly melted into n sections of liner code segment signals, then measures of each section of liner code segment signal respectively The only corresponding frequency compensation value of code word, and the slope of each section of liner code segment signal is calculated separately out, finally by each section of line Property code segment signal slope and start-stop code word and the corresponding frequency compensation value of the start-stop code word calculate the N sections after calibration and control Signal completes the calibration to input signal.

Optionally, according to AFC code words described in the present embodiment 3, the input signal is divided into N segment signals, and N sections described Signal is corresponding one by one with the distribution character curve of the AFC code words：

The distribution character curve of the frequency deviation value and the AFC code words is divided into N sections of reality by S3211 according to AFC code words Code section curve；

S3212, by the N sections of actual code section curve processing at the corresponding N segment signals, and the start-stop of each segment signal Code word is overlapped with the start-stop code word of corresponding each section of actual code section curve.

It is understood that the present embodiment 3 is by according to AFC code words that frequency deviation value and the distribution character of AFC code words is bent Line is divided into N sections of actual code section curves；And by N sections of actual code section curve processings at corresponding N segment signals, and described in described each section The start-stop code word of signal is overlapped with the start-stop code word of corresponding each section of actual code section curve, is that can use AFC code words in this way Input signal is accurately calibrated, and then cutting off rate can be reduced, user equipment is avoided as far as possible and search less than net Situation.

Method in 3 through this embodiment, the signal after being compensated according to frequency deviation is determined to tracking filter coefficient, is then adjusted Tracking velocity of the automatic frequency controller in filtering, can to greatest extent be promoted while taking into account AFC tracking accuracies in this way The tracking velocity of AFC reduces the radio circuit bit error rate that signal receives during HSDPA, to improve user equipment Performance, (i.e. user equipment restore low mobility state under) is to loop filter after the scene of Doppler frequency shift acute variation disappears Wave device exports tracking filter coefficient at a slow speed, does not influence the HSDPA performances under normal scene.

Embodiment 4

As shown in figure 4, the present embodiment 4 be implement in the scheme of 3 any embodiment of above-described embodiment 1- embodiments it is another One scheme provides a kind of method of Automatic Frequency Control in the present embodiment 4, and this method includes：

S41, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S42, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S43, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S44, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S45, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes

Optionally, carrying out frequency deviation compensation to input signal using frequency compensation value described in the present embodiment 4 includes：

The input signal is divided into N segment signals by S421 according to AFC code words, wherein the N segment signals are and the AFC The distribution character curve of code word is corresponding one by one, and the N is the natural number more than 0；

S422 is filtered the N segment signals, obtains N sections of control signals；

S423 carries out frequency deviation compensation to described N sections control signal respectively using the frequency compensation value.

It is understood that input signal is divided into N segment signals according to AFC code words in 4 frequency deviation compensator of the present embodiment (wherein the N segment signals are corresponding one by one with the distribution character curve of the AFC code words, which is the natural number more than 0), then The N segment signals are filtered, N sections of control signals are obtained, then according to the frequency compensation value, respectively to the N sections of control signal Carry out frequency deviation compensation.

Optionally, according to AFC code words described in the present embodiment 4, the input signal is divided into N segment signals, and N sections described Signal is corresponding one by one with the distribution character curve of the AFC code words：

The distribution character curve of the frequency deviation value and the AFC code words is divided into N sections of reality by S4211 according to AFC code words Code section curve；

S4212, by the N sections of actual code section curve processing at the corresponding N segment signals, and the start-stop of each segment signal Code word is overlapped with the start-stop code word of corresponding each section of actual code section curve.

Optionally, the signal after being compensated according to frequency deviation described in the present embodiment 4 determines the current mobile shape of user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status and includes：

S431, the N sections after frequency deviation is compensated control the control signal of same phase and frequency band in signal and remove, and will remain Under control signal connect to be formed full dose control signal；

S432 controls signal according to the full dose and determines the current mobile status of user equipment, and according to the mobile shape State generates corresponding tracking filter coefficient.

It is controlled at full dose it is understood that controlling signal processing by the N sections after compensating frequency deviation in the present embodiment 4 The N sections of control signal splicing is mainly filtered into complete full dose and controls signal, can remove N sections of control letters in this way by signal Some noise signal segments present in number improve the precision to input signal, are determined in this way further according to full dose control signal The current mobile status of the user equipment, and corresponding tracking filter coefficient is generated according to the mobile status, so that it is follow-up Ground adjuster adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient of output, and voltage-controlled Oscillator according to the tracking velocity, the frequency of the variation of the frequency of oscillation of the local oscillation signal generated and the input signal change into Row synchronize, the frequency of local oscillation signal can be adjusted in time in this way, to approach the frequency of input signal, so as to reduce local oscillation signal with The frequency error of the input signal of reception.

N sections control signal processing after compensating frequency deviation in 4 through this embodiment controls signal at full dose, and being in this way should N sections of control signal splicings are filtered into complete full dose control signal, can remove some noises letter present in N sections of control signals Number segment improves the precision to input signal, while the signal after being compensated according to frequency deviation, determines the current mobile shape of user equipment State, tracking filter coefficient is generated further according to these mobile status, then adjusts tracking speed of the automatic frequency controller in filtering Degree can promote the tracking velocity of AFC to greatest extent, reduce radio circuit and exist while taking into account AFC tracking accuracies in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in the field of Doppler frequency shift acute variation (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter after scape disappears, and does not influence HSDPA performances under normal scene.

Embodiment 5

As shown in figure 5, the present embodiment 5 is the another program implemented in the scheme of above-described embodiment 4, in the present embodiment 5 A kind of method of Automatic Frequency Control is provided, this method includes：

S51, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S52, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S53, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S54, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S55, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes.

Optionally, carrying out frequency deviation compensation to input signal using frequency compensation value described in the present embodiment 5 includes：

The input signal is divided into N segment signals by S521 according to AFC code words, wherein the N segment signals are and the AFC The distribution character curve of code word is corresponding one by one, and the N is the natural number more than 0；

S522 is filtered the N segment signals, obtains N sections of control signals；

S523 carries out frequency deviation compensation to described N sections control signal respectively using the frequency compensation value.

It is understood that input signal is divided into N segment signals according to AFC code words in 5 frequency deviation compensator of the present embodiment (wherein the N segment signals are corresponding one by one with the distribution character curve of the AFC code words, which is the natural number more than 0), then The N segment signals are filtered, N sections of control signals are obtained, then according to the frequency compensation value, respectively to the N sections of control signal Carry out frequency deviation compensation.

Optionally, according to AFC code words described in the present embodiment 5, the input signal is divided into N segment signals, and N sections described Signal is corresponding one by one with the distribution character curve of the AFC code words：

The distribution character curve of the frequency deviation value and the AFC code words is divided into N sections of reality by S5211 according to AFC code words Code section curve；

S5212, by the N sections of actual code section curve processing at the corresponding N segment signals, and the start-stop of each segment signal Code word is overlapped with the start-stop code word of corresponding each section of actual code section curve.

Optionally, the signal after being compensated according to frequency deviation described in the present embodiment 5 determines the current mobile shape of user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status and includes：

S531, the N sections after frequency deviation is compensated control the control signal of same phase and frequency band in signal and remove, and will remain Under control signal connect to be formed full dose control signal；

S532 controls signal according to the full dose and determines the current mobile status of user equipment, and according to the mobile shape State generates corresponding tracking filter coefficient.

Optionally, signal is controlled according to the full dose described in the present embodiment 5 and determines the current movement of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status and includes：

S5321 carries out sliding window processing to full dose control signal, generates front window accumulated value and rear window accumulated value；

The front window accumulated value is compared by S5322 with the rear window accumulated value, obtains the difference of the two；

S5323 determines the user equipment current first movement state and the second mobile status according to the difference；

S5324 generates the first tracking filter coefficient of the user equipment under the first movement state, described The second tracking filter coefficient of the user equipment is generated under two mobile status；

It is understood that user equipment can at different times or position acquisition is to different letters in the present embodiment 5 Number, according to the signal in different positions or moment acquisition, processing obtains full dose control signal, is obtained further according to processing complete Amount control signal carries out sliding window processing, generates front window accumulated value and rear window accumulated value, then by obtained front window accumulated value with Rear window accumulated value is compared, and the difference of the two is obtained, after obtaining this difference, so that it may to determine that user sets according to this difference Standby current first movement state and the second mobile status, such as：The signal at user equipment current time can correspond to mobile initial Position and final position that is to say user equipment current first movement state and the second mobile status.

Then the first tracking filter coefficient that the user equipment is generated under the first movement state, in the second movement shape The second tracking filter coefficient of the user equipment is generated under state.It can be sought by the first and second tracking filter coefficients average Value adjusts tracking velocity of the automatic frequency controller in filtering so that whole automatic according to the tracking filter coefficient of average value Tracking velocity of the frequency controller in filtering, can promote AFC to greatest extent while taking into account AFC tracking accuracies in this way Tracking velocity, reduce radio circuit during HSDPA signal receive the bit error rate, to improve the property of user equipment Energy.

In the embodiment of the present invention 5, the mobile status of user equipment can be divided into high-speed moving state (according to speed One mobile status) and low mobility state (the second mobile status), it is moved in high-speed moving state (first movement state) and low speed Under dynamic state (the second mobile status), the Doppler frequency shift variation degree of input signal is different, and above two mobile status can be with Pass through parameter setting according to actual needs.So-called high-speed moving state (first movement state) refers to that user equipment is in the speed It is moved under range (mobile status), can larger frequency displacement will produce due to Doppler effect, cause to generate HSDPA performances larger It influences；So-called low mobility state (the second mobile status) refers to that UE is moved under the velocity interval (mobile status), generation Frequency displacement is not enough to generate large effect to HSDPA performances.In the initial state, acquiescence current moving state is that low speed moves shape State (the second mobile status).

The present embodiment 5 is by determining the current first movement state and the second mobile status of user equipment, further according to the The first tracking filter coefficient is generated under one mobile status, and the second tracking filter coefficient is generated under the second mobile status, in this way may be used With according to the first tracking filter coefficient or the second tracking filter coefficient, tracking velocity when adjustment filters, so that voltage controlled oscillation According to the tracking velocity, the frequency of oscillation variation of the local oscillation signal generated carries out same device with the frequency variation of input signal Step can promote the tracking velocity of AFC to greatest extent, reduce radio circuit and exist while taking into account AFC tracking accuracies in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in the field of Doppler frequency shift acute variation (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter after scape disappears, and does not influence HSDPA performances under normal scene.

Embodiment 6

As shown in fig. 6, the embodiment of the present invention 6 is the another program implemented in the scheme of above-described embodiment 1- embodiments 5, A kind of method of Automatic Frequency Control is provided in the present embodiment 6, this method includes：

S61, user equipment obtains input signal, and calculates the frequency deviation value of the input signal；

S62, frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency Rate offset carries out frequency deviation compensation to the input signal；

S63, automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile shape of the user equipment State, and corresponding tracking filter coefficient is generated according to the mobile status；

S64, adjuster adjust tracking speed of the automatic frequency controller in filtering according to the tracking filter coefficient Degree；

S65, voltage controlled oscillator according to the tracking velocity, the variation of the frequency of oscillation of the local oscillation signal that it is generated with it is described The frequency variation of input signal synchronizes.

Optionally, described according to the tracking filter coefficient, adjust tracking of the automatic frequency controller in filtering Speed includes：

S641 calculates the path loss Dynamic gene of the user equipment according to the tracking filter coefficient；

S642 determines the adjusting parameter of the user equipment according to the path loss Dynamic gene；

S643 adjusts tracking velocity of the automatic frequency controller in filtering according to the adjusting parameter.

It is understood that by calculating the path loss Dynamic gene of user equipment in the present embodiment 6, and according to the road Damage Dynamic gene determines adjusting parameter, can improve the accuracy that the user equipment carries out uplink transmission in this way, while according to this Adjusting parameter, tracking velocity of the adjustment automatic frequency controller in filtering, in this way can quick tracking filter coefficient, quick When tracing into the variation of frequency deviation, while AFC tracking accuracies can be taken into account, the tracking velocity of AFC is promoted to greatest extent.

The path loss Dynamic gene of user equipment is calculated in the present embodiment 6, is then determined according to the path loss Dynamic gene Adjusting parameter is adjusting tracking velocity of the automatic frequency controller in filtering when according to the adjusting parameter, can take into account in this way While AFC tracking accuracies, the tracking velocity of AFC is promoted to greatest extent, radio circuit signal during HSDPA is reduced and connects The bit error rate of receipts, to improve the performance of user equipment, (i.e. user sets after the scene of Doppler frequency shift acute variation disappears For under recovery low mobility state) tracking filter coefficient at a slow speed is exported to loop filter, the HSDPA under normal scene is not influenced Performance.

Embodiment 7

As shown in fig. 7, the embodiment of the present invention 7 provides a kind of computer storage media, including instruction, work as described instruction When running on computers, the computer is made to execute the method provided according to above-described embodiment 1- embodiments 5

Embodiment 8

As shown in figure 8, the embodiment of the present invention 8 provides a kind of automatic frequency controller, the automatic frequency controller packet It includes：

Adjust module, sending module；

It is understood that automatic frequency controller is that the signal determination after being compensated according to frequency deviation is arrived in the present embodiment 8 Then tracking filter coefficient adjusts tracking velocity of the automatic frequency controller in filtering, can take into account AFC tracking essences in this way While spending, the tracking velocity of AFC is promoted to greatest extent, reduces the radio circuit error code that signal receives during HSDPA Rate, to improve the performance of user equipment, (i.e. user equipment restores low after the scene of Doppler frequency shift acute variation disappears Under fast mobile status) to loop filter output tracking filter coefficient at a slow speed, the HSDPA performances under normal scene are not influenced.

Embodiment 9

As shown in figure 9, the embodiment of the present invention 9 provides a kind of system of Automatic Frequency Control, which includes：

The user equipment, for obtaining input signal；

It is understood that the input signal can be radiofrequency signal in the present embodiment 9, or baseband signal, And in embodiments of the present invention, the mobile status of (user equipment) UE can be divided into according to actual needs high-speed moving state and Low mobility state is directed to different mobile status selections and generates different tracking filter coefficients.In addition in the present embodiment 9 User equipment can also by radio circuit receive radiofrequency signal, and by the radiofrequency signal be converted to baseband signal (such as： WCDMA it) is used as input signal, can also be directly using the radiofrequency signal of acquisition as input signal, (i.e. UE is in high-speed mobile shape Under state) to the quick tracking filter coefficient of automatic frequency controller output, and speed is tracked according to the tracking filter coefficient adjustment of output Degree in the present embodiment 9 is to need to obtain the signal after frequency precompensation before output tracking filter factor, and these frequencies Signal after precompensation is in user equipment high-speed mobile, and frequency offset compensation is adopted according to the input signal that user equipment obtains The frequency deviation value calculated with special algorithm, when the user equipment under high-speed mobile environment receives the frequency of signal close to base station sheet The frequency (being ideally equal to) of body setting, therefore terminal need not consume too many resource and carry out frequency deviation correction, directly solve Tune, even if ensure that user equipment is exporting tracking filter coefficient at a slow speed, to not influence the HSDPA under normal scene Energy.The variation of input signal frequency deviation can be quickly traced into additionally, due to automatic frequency controller, so that subsequently adjust Device adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient of output, and voltage controlled oscillator According to the tracking velocity, the frequency of oscillation variation of the local oscillation signal generated carries out same with the frequency variation of the input signal Step, can adjust the frequency of local oscillation signal in time in this way, to approach the frequency of input signal, to reduce local oscillation signal and to receive Input signal frequency error, the frequency of oscillation of voltage controlled oscillator is made in addition it can the diminishing error signal of convergence Deviate and reduce, to which local oscillation signal is pulled to rated value, and then realizes that convergence automatic frequency is adjusted, AFC loops is made finally to reach To equilibrium state, that realizes frequency automatically controls locking, and input signal and the frequency of local oscillation signal are realized same in the present embodiment 9 Step variation, radio circuit is able to capture in time or the frequency of track transmitter reduces signal and connect thus during HSDPA The bit error rate of receipts, to improve the performance of UE.

9 system through this embodiment calculates the frequency deviation value of input signal, and calculating frequency according to this frequency deviation value mends Value is repaid, frequency deviation compensation is carried out to input signal, the accuracy error of input signal can be reduced in this way, after being compensated according further to frequency deviation Signal determine to tracking filter coefficient, then adjust tracking velocity of the automatic frequency controller in filtering, in this way can be While taking into account AFC tracking accuracies, the tracking velocity of AFC is promoted to greatest extent, radio circuit is reduced and believes during HSDPA Number receive the bit error rate, to improve the performance of user equipment, Doppler frequency shift acute variation scene disappear after (use Family equipment is restored under low mobility state) tracking filter coefficient at a slow speed is exported to loop filter, it does not influence under normal scene HSDPA performances.

Embodiment 10

The present embodiment 10 is another embodiment carried out on the basis of above-described embodiment 9, described in the present embodiment 10 Frequency offset compensation, be specifically used for according to AFC code words, the input signal is divided into N segment signals, wherein the N segment signals be with The distribution character curve of the AFC code words is corresponding one by one, and the N is the natural number more than 0；And to the N segment signals into Row filtering obtains N sections of control signals；Simultaneously according to the frequency compensation value, frequency deviation benefit is carried out to described N sections control signal respectively It repays.

It is understood that the input signal is divided into N sections by 9 frequency offset compensations according to AFC code words through this embodiment Signal, then the N segment signals are filtered, obtain N sections of control signals；Then according to the frequency compensation value, the N sections is controlled respectively Signal processed carries out frequency deviation compensation, can be calibrated to input signal in this way by increasing the frequency deviation compensation to input signal To greatly improve the precision of input signal, the influence of other noise signals is reduced, subsequent control accuracy can also be improved, separately It is outer compensated according to frequency deviation after signal determine to tracking filter coefficient, then adjust tracking of the automatic frequency controller in filtering Speed can promote the tracking velocity of AFC to greatest extent, reduce radio circuit while taking into account AFC tracking accuracies in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in Doppler frequency shift acute variation (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter after scene disappears, not shadow Ring the HSDPA performances under normal scene.

Embodiment 11

The present embodiment 11 is another embodiment carried out on the basis of above-described embodiment 10, described in the present embodiment 11 Frequency offset compensation, specifically for the distribution character curve of the frequency deviation value and the AFC code words is divided into N sections according to AFC code words Actual code section curve；And be used for the N sections of actual code section curve processing into the corresponding N segment signals, and each section is believed Number start-stop code word and corresponding each section of actual code section curve start-stop code word overlap.

It is understood that through this embodiment 11 frequency deviation is compensated after N sections control signal processing at full dose control believe Number, it is that the N sections of control signal splicing is filtered into complete full dose to control signal in this way, can removes and be deposited in N sections of control signals Some noise signal segments, improve to the precision of input signal, while the signal after being compensated according to frequency deviation, determine that user sets Standby current mobile status, tracking filter coefficient is generated further according to these mobile status, is then adjusted automatic frequency controller and is existed Tracking velocity when filtering can promote the tracking velocity of AFC, drop to greatest extent while taking into account AFC tracking accuracies in this way The low radio circuit bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in Doppler's frequency (i.e. user equipment restores under low mobility state) tracks at a slow speed to loop filter output after moving the scene disappearance of acute variation Filter factor does not influence the HSDPA performances under normal scene.

Embodiment 12

The embodiment of the present invention 12 is another embodiment carried out on the basis of above-described embodiment 10, in the present embodiment 12 The automatic frequency controller is additionally operable to carry out sliding window processing to full dose control signal, generates front window accumulated value with after Window accumulated value；The front window accumulated value is compared with the rear window accumulated value, obtains the difference of the two；

It is understood that by determining that the current first movement state of user equipment and second is moved in the present embodiment 12 Dynamic state, further according to the first tracking filter coefficient is generated under first movement state, generated under the second mobile status second with Track filter factor can adjust tracking when filtering according to the first tracking filter coefficient or the second tracking filter coefficient in this way Speed, so that voltage controlled oscillator, according to the tracking velocity, the frequency of oscillation of the local oscillation signal generated changes and input signal Frequency variation synchronize, in this way can while taking into account AFC tracking accuracies, to greatest extent promoted AFC tracking velocity, The radio circuit bit error rate that signal receives during HSDPA is reduced, to improve the performance of user equipment, in Doppler After the scene of frequency displacement acute variation disappears (i.e. user equipment restores under low mobility state) to loop filter export at a slow speed with Track filter factor does not influence the HSDPA performances under normal scene.

Embodiment 13

The embodiment of the present invention 13 is another reality carried out on the basis of above-described embodiment 9- 12 any embodiments of embodiment Example is applied, the automatic frequency controller described in the present embodiment 13 is specifically used for, according to the tracking filter coefficient, calculating described The path loss Dynamic gene of user equipment；

It is understood that the path loss Dynamic gene of user equipment is calculated in the present embodiment 13, then according to the road Damage Dynamic gene determines adjusting parameter, and tracking velocity of the automatic frequency controller in filtering when is being adjusted according to the adjusting parameter, It can promote AFC tracking velocity to greatest extent while taking into account AFC tracking accuracies, reduce radio circuit and exist in this way The bit error rate that signal receives during HSDPA, to improve the performance of user equipment, in the field of Doppler frequency shift acute variation (i.e. user equipment restores under low mobility state) exports tracking filter coefficient at a slow speed to loop filter after scape disappears, and does not influence HSDPA performances under normal scene.

Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments " The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure, Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples Sign is combined.

It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description The specific work process with unit is set, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.

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 unit, only A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or Person is desirably integrated into another system, or some features can be ignored or not executed.

The unit illustrated as separating component may or may not be physically separated, and be shown as unit Component may or may not be physical unit, you can be located at a place, or may be distributed over multiple networks On unit.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the embodiment of the present invention 's.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.

It, can if integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product To be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention substantially or Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products Out, 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 all or part of each embodiment method of the present invention Step.And storage medium above-mentioned includes：It is USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random Access various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic disc or CD Matter.

More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions, These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right Subject to the protection domain asked.

Claims

1. a kind of method of Automatic Frequency Control, which is characterized in that this method includes：

Frequency offset compensation determines the frequency compensation value of the input signal according to the frequency deviation value, and utilizes the frequency compensation value Frequency deviation compensation is carried out to the input signal；

Automatic frequency controller compensated according to frequency deviation after signal, determine the current mobile status of the user equipment, and according to The mobile status generates corresponding tracking filter coefficient；

Voltage controlled oscillator is according to the tracking velocity, frequency of oscillation variation and the input signal of the local oscillation signal generated to it Frequency variation synchronize.

2. according to the method described in claim 1, it is characterized in that, described carry out frequency deviation using frequency compensation value to input signal Compensation includes：

According to AFC code words, the input signal is divided into N segment signals, wherein the N segment signals are points with the AFC code words Cloth characteristic curve is corresponding one by one, and the N is the natural number more than 0；

The N segment signals are filtered, N sections of control signals are obtained；

Frequency deviation compensation is carried out to described N sections control signal respectively using the frequency compensation value.

3. according to the method described in claim 2, it is characterized in that, described according to AFC code words, the input signal is divided into N Segment signal, and to be corresponding one by one with the distribution character curve of the AFC code words include the N segment signals：

According to AFC code words, the distribution character curve of the frequency deviation value and the AFC code words is divided into N sections of actual code section curves；

By the N sections of actual code section curve processing at the corresponding N segment signals, and the start-stop code word of each segment signal with it is corresponding Each section of actual code section curve start-stop code word overlap.

4. according to any methods of claim 1-3, which is characterized in that the automatic frequency controller is compensated according to frequency deviation Signal afterwards determines the current mobile status of user equipment, and generates corresponding tracking filter coefficient according to the mobile status Including：

The control signal of same phase and frequency band removes in N sections control signal after frequency deviation is compensated, and by remaining control Signal connects to forming full dose control signal；

Signal is controlled according to the full dose and determines the current mobile status of user equipment, and is generated and corresponded to according to the mobile status Tracking filter coefficient.

5. according to the method described in claim 4, it is characterized in that, described determine the user according to full dose control signal The current mobile status of equipment, and corresponding tracking filter coefficient is generated according to the mobile status and includes：

Sliding window processing is carried out to full dose control signal, generates front window accumulated value and rear window accumulated value；

The first tracking filter coefficient that the user equipment is generated under the first movement state, in second mobile status Lower the second tracking filter coefficient for generating the user equipment；

Wherein first movement state and the second mobile status are drawn according to the different movement speeds of the user equipment respectively Point, and under first movement state and the second mobile status, the Doppler frequency shift variation degree of the input signal is different.

6. a kind of computer storage media, which is characterized in that including instruction, when described instruction is run on computers, make institute It states computer and executes method according to any one of claims 1 to 5.

7. a kind of automatic frequency controller, which is characterized in that the automatic frequency controller includes：

Adjust module, sending module；

The adjustment module determines the current mobile status of user equipment, and according to institute for the signal after being compensated according to frequency deviation It states mobile status and generates corresponding tracking filter coefficient；The sending module, for the tracking filter coefficient of generation to be sent to Adjuster；

Signal after the wherein described frequency deviation compensation carries out frequency deviation to input signal using frequency compensation value and compensates to obtain, and institute Stating frequency compensation value is determined according to the frequency deviation value that the input signal of acquisition calculates.

8. a kind of system of Automatic Frequency Control, which is characterized in that the system includes：

The user equipment, for obtaining input signal；

The frequency offset compensation calculates the frequency deviation value of the input signal, while basis for the input signal according to acquisition The frequency deviation value, determines the frequency compensation value of the input signal, and using the frequency compensation value to the input signal into Line frequency offset compensation；

The automatic frequency controller determines the current mobile status of user equipment for the signal after being compensated according to frequency deviation, and Corresponding tracking filter coefficient is generated according to the mobile status；

The adjuster adjusts tracking velocity of the automatic frequency controller in filtering according to the tracking filter coefficient；

The voltage controlled oscillator, user is according to the tracking velocity after adjustment, the frequency of oscillation of the local oscillation signal generated to it Change and is synchronized with the variation of the frequency of the input signal.

9. system according to claim 8, which is characterized in that the frequency offset compensation is specifically used for according to AFC code words, The input signal is divided into N segment signals, wherein the N segment signals are and the distribution character curve of AFC code words phase one by one Corresponding, the N is the natural number more than 0；And the N segment signals are filtered, obtain N sections of control signals；Basis simultaneously The frequency compensation value carries out frequency deviation compensation to described N sections control signal respectively.

10. system according to claim 9, which is characterized in that the frequency offset compensation is specifically used for according to AFC code words The distribution character curve of the frequency deviation value and the AFC code words is divided into N sections of actual code section curves；And for will be N sections described Actual code section curve processing is at the corresponding N segment signals, and the start-stop code word of each segment signal and corresponding each section of reality The start-stop code word of code section curve overlaps.