CN106330322B - Frequency deviation skew processing method and processing device - Google Patents
Frequency deviation skew processing method and processing device Download PDFInfo
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Abstract
The invention discloses a kind of frequency deviation skew processing method and processing devices, comprising: the third polarization signal and the 4th polarization signal being respectively converted into the first polarization signal and the second polarization signal under polar coordinate system；Frequency deviation compensation is carried out to the third polarization signal and the 4th polarization signal respectively, obtains compensated 5th polarization signal of frequency deviation and the 6th polarization signal；5th polarization signal and the 6th polarization signal are divided into two-way, biquadratic offset estimation is carried out using first via signal, obtains frequency deviation offset；Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, obtains phase compensation value；For second road signal, phase compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation are carried out to the 5th polarization signal and the 6th polarization signal using the phase compensation value；By under polar coordinate system the 7th polarization signal and the 8th polarization signal be respectively converted into the 9th polarization signal and the tenth polarization signal under cartesian coordinate system.
Description
Technical field
The present invention relates to the frequency deviation skew technology in the communications field more particularly to the frequency deviation skews in a kind of optical transport network
Processing method and processing device.
Background technique
In the development of transmission technology, optical fiber is proved to be a kind of indispensable medium.How with minimal amount of optical fiber
The most abundant information is transmitted, for this exploration, the development of optical transport experienced following several stages substantially: space division multiplexing
(SDM, Space Division Multiplexing) stage, time division multiplexing (TDM, Time Division
Multiplexing) stage and wavelength-division multiplex (WDM, Wavelength Division Multiplexing) stage.
Even to this day wire transmission is still based on wavelength-division multiplex system.With the development of communication technology, commercial at present
40G wavelength-division transmission, which is gradually developed to 100G, 400G, to be transmitted, and at the same time, is also constantly being expanded in data transmission distance.This
Sample, wavelength-division multiplex system can bring chromatic dispersion, polarizing coating dispersion, frequency deviation skew, strong filter effect etc. all in transmission process
More problems need to solve, and the solution of these problems needs the method with Digital Signal Processing, referred to as 100G Digital Signal Processing
(DSP, Digital Signal Processing) processing.
The method of traditional optical transport network frequency deviation skew processing, will lead to that processing delay is long, resource consumption is big, power consumption
Greatly, slow so as to cause communication system convergence rate, stability is poor, be not achieved resource with it is optimal in performance.
Summary of the invention
In order to solve the above technical problems, the embodiment of the invention provides a kind of frequency deviation skew processing method and processing devices.
Frequency deviation skew processing method provided in an embodiment of the present invention includes:
By under cartesian coordinate system the first polarization signal and the second polarization signal be respectively converted under polar coordinate system
Three polarization signals and the 4th polarization signal；
Frequency deviation compensation is carried out to the third polarization signal and the 4th polarization signal respectively, obtains frequency deviation the compensated 5th
Polarization signal and the 6th polarization signal；
5th polarization signal and the 6th polarization signal are divided into two-way, carry out biquadratic frequency deviation using first via signal
Estimation, obtains frequency deviation offset；Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, obtains phase benefit
Repay value；For second road signal, phase is carried out to the 5th polarization signal and the 6th polarization signal using the phase compensation value
Position compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation；
By under polar coordinate system the 7th polarization signal and the 8th polarization signal be respectively converted under cartesian coordinate system
Nine polarization signals and the tenth polarization signal.
It is described that frequency deviation compensation is carried out to the third polarization signal and the 4th polarization signal respectively in the embodiment of the present invention,
Obtain compensated 5th polarization signal of frequency deviation and the 6th polarization signal, comprising:
Under polar coordinate system, the angle value of the third polarization signal is added with the frequency deviation offset that estimation obtains
Processing, obtains compensated 5th polarization signal of frequency deviation；
Under polar coordinate system, the angle value of the 4th polarization signal is added with the frequency deviation offset that estimation obtains
Processing, obtains compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
It is described to carry out biquadratic offset estimation using first via signal in the embodiment of the present invention, obtain frequency deviation offset；Benefit
Biquadratic phase estimation is carried out with the intermediate data of biquadratic offset estimation, obtains phase compensation value, comprising:
Biquadratic offset estimation is carried out using first via signal, frequency deviation offset is obtained, to the third polarization signal
Frequency deviation compensation is carried out with the 4th polarization signal；
Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, phase compensation value is obtained, to institute
It states the 5th polarization signal and the 6th polarization signal carries out phase compensation.
In the embodiment of the present invention, first polarization signal and the second polarization signal are orthogonal two-way polarization signal.
In the embodiment of the present invention, the 9th polarization signal and the tenth polarization signal are orthogonal two-way polarization signal, and
9th polarization signal is that the signal after the compensation deals of frequency deviation skew is carried out to first polarization signal, the tenth polarization
Signal is that the signal after the compensation deals of frequency deviation skew is carried out to second polarization signal.
In the embodiment of the present invention, the 5th polarization signal and the 6th polarization signal are divided into two-way, comprising:
5th polarization signal is divided into two-way, and the 6th polarization signal is divided into two-way；
It incites somebody to action the 5th polarization signal all the way and another way the 5th is polarized and believed as first via signal by the 6th polarization signal all the way
Number with the 6th polarization signal of another way as second road signal.
Frequency deviation skew processing unit provided in an embodiment of the present invention includes:
First coordinate transformation unit, for by under cartesian coordinate system the first polarization signal and the second polarization signal distinguish
Be converted to the third polarization signal and the 4th polarization signal under polar coordinate system；
Frequency offset compensation element is obtained for carrying out frequency deviation compensation to the third polarization signal and the 4th polarization signal respectively
To compensated 5th polarization signal of frequency deviation and the 6th polarization signal；
Biquadratic frequency deviation estimating unit is utilized for the 5th polarization signal and the 6th polarization signal to be divided into two-way
First via signal carries out biquadratic offset estimation, obtains frequency deviation offset；
Biquadratic phase estimation unit carries out biquadratic phase for the intermediate data using biquadratic offset estimation and estimates
Meter, obtains phase compensation value；
Phase compensation unit, for being directed to second road signal, using the phase compensation value to the 5th polarization signal
Phase compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation are carried out with the 6th polarization signal；
Second coordinate transformation unit, for by under polar coordinate system the 7th polarization signal and the 8th polarization signal convert respectively
For the 9th polarization signal and the tenth polarization signal under cartesian coordinate system.
In the embodiment of the present invention, the frequency offset compensation element includes:
First frequency deviation compensates subelement, is used under polar coordinate system, by the angle value of the third polarization signal and estimation
Obtained frequency deviation offset carries out addition processing, obtains compensated 5th polarization signal of frequency deviation；
Second frequency deviation compensates subelement, is used under polar coordinate system, by the angle value of the 4th polarization signal and estimation
Obtained frequency deviation offset carries out addition processing, obtains compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
In the embodiment of the present invention, the biquadratic frequency deviation estimating unit is also used to carry out biquadratic using first via signal
Offset estimation obtains frequency deviation offset, to carry out frequency deviation compensation to the third polarization signal and the 4th polarization signal；
The biquadratic phase estimation unit is also used to carry out biquadratic phase using the intermediate data of biquadratic offset estimation
Position estimation, obtains phase compensation value, to carry out phase compensation to the 5th polarization signal and the 6th polarization signal.
In the embodiment of the present invention, first polarization signal and the second polarization signal are orthogonal two-way polarization signal.
In the embodiment of the present invention, the 9th polarization signal and the tenth polarization signal are orthogonal two-way polarization signal, and
9th polarization signal is that the signal after the compensation deals of frequency deviation skew is carried out to first polarization signal, the tenth polarization
Signal is that the signal after the compensation deals of frequency deviation skew is carried out to second polarization signal.
In the embodiment of the present invention, the biquadratic frequency deviation estimating unit is also used to the 5th polarization signal being divided into two
Road, and the 6th polarization signal is divided into two-way；Will all the way the 5th polarization signal and the 6th polarization signal all the way as the
Signal all the way, using the 5th polarization signal of another way and the 6th polarization signal of another way as second road signal.
In the technical solution of the embodiment of the present invention, the characteristics of processing according to frequency offset processing and skew, the two is analyzed,
Frequency deviation compensation and phase compensation are the compensation of data and angle value；Offset estimation and phase estimation are estimated using biquadratic
Way, be required to carry out quadruplicate processing to data.For this purpose, the signal of two-way polarization state is carried out coordinate conversion, will believe
Number it is transformed into polar coordinate system from cartesian coordinate system, so that the angle value of itself and compensation is in Same Latitude, thus transport multiplication
Calculation is changed into add operation, and optimization has been reached from resource, power consumption and speed.Also, the embodiment of the present invention estimates biquadratic
It extracts, the part public as one.Meanwhile biquadratic also uses polar coordinate system, it may be assumed that does one four for angle merely
Processing again, in this way, quadruplicate operation (three multiplication and an addition) is transformed to shifting processing.The embodiment of the present invention
Implementation is simple, and hardware is easy to accomplish, improves the robustness of system；Hardware resource consumption is low, low in energy consumption, practical to realize
In, compared with the resource that conventional method reduces by 40%, reduce costs；Calculating speed is improved, to improve performance.
Detailed description of the invention
Fig. 1 is that existing frequency deviation skew handles block diagram；
Fig. 2 is the flow diagram of the frequency deviation skew processing method of the embodiment of the present invention；
Fig. 3 is that the frequency deviation skew of the embodiment of the present invention handles block diagram；
Block diagram of the Fig. 4 to the frequency offset processing module of the embodiment of the present invention；
Fig. 5 is the phase estimation of the embodiment of the present invention and the schematic diagram of compensation；
Fig. 6 is the structure composition schematic diagram of the frequency deviation skew processing unit of the embodiment of the present invention.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, with reference to the accompanying drawing to this hair
The realization of bright embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used to limit the embodiment of the present invention.
Traditional method is that frequency deviation skew is separately handled at present, i.e., signal is introduced into frequency offset processing module, carries out frequency deviation compensation
With estimate and then enter skew processing module, carry out phase estimation and compensation.Referring to Fig.1, as can be seen from Figure, frequency
Inclined skew processing mainly includes frequency deviation compensation/offset estimation and phase estimation/phase compensation two parts composition.Polarization state X input
Signal and polarization state Y input signal enter frequency deviation compensation.The polarization state X signal and polarization state Y-signal compensated through overdeviation, point
For two-way, the first via enters biquadratic offset estimation, carries out offset estimation, and the frequency deviation offset of estimation is then output to frequency
Offset compensation；The first via enters phase estimation/phase compensation, carries out phase estimation, is then output to the phase compensation value of estimation
Phase compensation；Second road enters phase compensation, carries out operation with the phase compensation value of estimation, obtains final result output.
In above-mentioned processing, signal is all made of cartesian coordinate form.In this way, in biquadratic offset estimation and biquadratic
It in phase estimation, needs to carry out quadruplicate calculation process twice respectively, since signal is cartesian coordinate form, at biquadratic
The consumption of the power consumption and resource of reason is all very big.In frequency deviation compensation and phase compensation, since signal is cartesian coordinate form, this
In the processing of kind of signal, the operation of cartesian coordinate and angle value also causes resource consumption bigger, calculation process speed compared with
Slowly.
In the technical solution of the embodiment of the present invention, the characteristics of processing according to frequency offset processing and skew, the two is analyzed,
Frequency deviation compensation and phase compensation are the compensation of data and angle value；Offset estimation and phase estimation are estimated using biquadratic
Way, be required to carry out quadruplicate processing to data.For this purpose, the signal of two-way polarization state is carried out coordinate conversion, will believe
Number it is transformed into polar coordinate system from cartesian coordinate system, so that the angle value of itself and compensation is in Same Latitude, thus transport multiplication
Calculation is changed into add operation, and optimization has been reached from resource, power consumption and speed.Also, the embodiment of the present invention estimates biquadratic
It extracts, the part public as one.Meanwhile biquadratic also uses polar coordinate system, it may be assumed that does one four for angle merely
Processing again, in this way, quadruplicate operation (three multiplication and an addition) is transformed to shifting processing.The embodiment of the present invention
Implementation is simple, and hardware is easy to accomplish, improves the robustness of system；Hardware resource consumption is low, low in energy consumption, practical to realize
In, compared with the resource that conventional method reduces by 40%, reduce costs；Calculating speed is improved, to improve performance.
Fig. 2 is the flow diagram of the frequency deviation skew processing method of the embodiment of the present invention, at the frequency deviation skew in this example
Reason method be applied to frequency deviation skew processing unit, as shown in Fig. 2, the frequency deviation skew processing method the following steps are included:
Step 201: by under cartesian coordinate system the first polarization signal and the second polarization signal be respectively converted into polar coordinates
Third polarization signal and the 4th polarization signal under system.
In the embodiment of the present invention, first polarization signal and the second polarization signal are orthogonal two-way polarization signal.
Step 202: frequency deviation compensation being carried out to the third polarization signal and the 4th polarization signal respectively, obtains frequency deviation compensation
The 5th polarization signal and the 6th polarization signal afterwards.
In the embodiment of the present invention, under polar coordinate system, frequency that the angle value of the third polarization signal and estimation are obtained
Offset compensation value carries out addition processing, obtains compensated 5th polarization signal of frequency deviation；
Under polar coordinate system, the angle value of the 4th polarization signal is added with the frequency deviation offset that estimation obtains
Processing, obtains compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
Step 203: the 5th polarization signal and the 6th polarization signal being divided into two-way, carry out four using first via signal
Power offset estimation obtains frequency deviation offset；Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, is obtained
To phase compensation value.
In the embodiment of the present invention, the 5th polarization signal is divided into two-way, and the 6th polarization signal is divided into
Two-way；It incites somebody to action the 5th polarization signal all the way and the 6th polarization signal is as first via signal all the way, by the 5th polarization signal of another way
With the 6th polarization signal of another way as second road signal.
In the embodiment of the present invention, biquadratic offset estimation is carried out using first via signal, frequency deviation offset is obtained, to institute
It states third polarization signal and the 4th polarization signal carries out frequency deviation compensation；It is carried out four times using the intermediate data of biquadratic offset estimation
Square phase estimation, obtains phase compensation value, to carry out phase compensation to the 5th polarization signal and the 6th polarization signal.
Step 204: being directed to second road signal, the 5th polarization signal and the 6th are polarized using the phase compensation value
Signal carries out phase compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation.
Step 205: by under polar coordinate system the 7th polarization signal and the 8th polarization signal be respectively converted into cartesian coordinate
The 9th polarization signal and the tenth polarization signal under system.
In the embodiment of the present invention, the 9th polarization signal and the tenth polarization signal are orthogonal two-way polarization signal, and
9th polarization signal is that the signal after the compensation deals of frequency deviation skew is carried out to first polarization signal, the tenth polarization
Signal is that the signal after the compensation deals of frequency deviation skew is carried out to second polarization signal.
Below with reference to frequency deviation skew shown in Fig. 3 processing block diagram to the frequency deviation skew processing method of the embodiment of the present invention do into
One step elaborates.
As shown in figure 3, polarization state X input signal and polarization state Y input signal, first carry out polar coordinates conversion process, by flute
Karr coordinate form is converted to polar form, is then fed into frequency deviation compensation, in frequency deviation compensation, the angle value of signal and estimation
Frequency deviation offset directly carry out addition processing, obtain the compensated signal of frequency deviation, be at this time polar coordinate representation form.Through overfrequency
The polarization state X signal and polarization state Y-signal of offset compensation, are divided into two-way, enter biquadratic offset estimation all the way, carry out frequency deviation and estimate
The frequency deviation offset of estimation is then output to frequency deviation compensation, and the intermediate data of four offset estimations is sent into four times by meter
Square phase estimation carries out data-reusing, and biquadratic phase estimation directly carries out phase estimation with this intermediate data, obtains phase benefit
Repay value；Another way enters phase compensation, carries out operation with the phase compensation value of estimation, then carries out coordinate conversion, pole is sat
Mark is converted into cartesian coordinate, obtains final result output.
In frequency offset processing module, polarization state X and Y-signal to input carry out coordinate conversion, by real part/void of complex signal
Portion's expression way is converted to amplitude/angle expression way；Further according to the frequency deviation offset that biquadratic offset estimation provides, to signal
Carry out frequency deviation compensation；It carries out the compensated signal of frequency deviation and gives biquadratic offset estimation again, calculate current frequency offset offset and true
Error between real frequency deviation offset；Meanwhile compensated polarization state X/Y signal and biquadratic signal (polar form) being sent
Give skew processing module.
In skew processing module, phase compensation is carried out to the output signal of frequency deviation compensation, and sat after phase compensation
Mark conversion, gives subsequent module after polar coordinate representation mode to be converted into real part/imaginary part expression way of complex signal；To save
Resource and raising processing speed, the biquadratic that biquadratic phase estimation is multiplexed the output of biquadratic offset estimation calculate intermediate result,
And using the output signal of frequency deviation compensation, output is to phase compensation block after phase compensation value is calculated.
It is described in detail below with reference to frequency offset processing module of the Fig. 4 to the embodiment of the present invention.As shown in figure 4, utilizing
Cordic function converts the negative signal on X and Y polarization state to from the expression of real part/imaginary part in the polar coordinates table of amplitude/angle
After showing mode, then the angle value that frequency deviation compensation is just reduced to signal is added with frequency deviation offset.X is mended with frequency deviation in Y polarization state
Signal after repaying respectively enters respective biquadratic inherent spurious frequency deviation estimation module, by two signals for calculating adjacent n position
The phase difference value of biquadratic result, then obtained continuous N number of result is added up, four are removed again after seeking angle value, are obtained by signal
Inherent spurious frequency deviation offset between true frequency deviation offset and the frequency deviation offset of loop output.
There are two kinds of operating modes for offset estimation, and support that register is configurable.
Mode 0:
In the biquadratic inherent spurious frequency deviation estimation of X polarization state, n value adaptively chooses 1,2,4,8 ... ..., nmax, wherein nmax
Can value 1,2,4,8,16, support register configurable.N value is fixed as 2048.
It is 32768 that n value, which takes 1, N value, in the biquadratic inherent spurious frequency deviation estimation of Y polarization state.The inherent spurious frequency deviation of Y polarization state estimation
Offset is as judging whether X polarization state inherent spurious frequency deviation offset has occurred the foundation of phase ambiguity.
It is selected by switch, the biquadratic inherent spurious frequency deviation estimated result of X polarization state sends to second-order loop filtering.
Mode 1:
X is identical as the biquadratic inherent spurious frequency deviation estimation of Y polarization state, and all taking n value is 1, N 32768.
It is selected by switch, sends to loop filtering after the biquadratic inherent spurious frequency deviation estimated result of X and Y polarization state is average.
The output signal of loop filtering is integrated, after clipping operation, and frequency deviation angle estimation value is obtained.Last loop is defeated
Frequency deviation offset angle value out adds frequency deviation angle estimation value, is exactly current loop output frequency deviation offset angle value, for next
The frequency deviation of secondary signal compensates.
Fig. 5 is the phase estimation of the embodiment of the present invention and the schematic diagram of compensation, as shown in figure 5, setting the phase for receiving signal
θk=θs(k)+ΔωkTi+θn+θASE, wherein θs(k) original signal phase, Δ ω kT are indicatediIndicate frequency deviation phase, θnIt indicates
Skew phase, θASEIndicate noise phase.Its frequency deviation phase delta ω kTiIt is eliminated by front offset estimation, then phase is remaining
Are as follows: θs(k)+θn+θASE；By θs(k)+θn+θASEIt is handled by biquadratic, obtains V4(k)=exp { j4 θs(k)}·exp{j4
θn}·exp{j4θASEProcessing, it is assumed thatThen V4(k) original signal phase can be removed.Then it passes through
Cross low-pass filter (LPF, Low Pass Filter) removal noise phase θASE(use multiple V4(k) it is added), then extract width
The result of skew phase can be obtained in angle.I.e. represented by following formula:
Wherein, arg (z) indicates the argument of plural number z.
After biquadratic, noise is also exaggerated, and the noise amplification of phase angle is unavoidable, but can minimize making an uproar for amplitude
Sound amplification, therefore, above formula can be optimized are as follows:
Biquadratic processing only is carried out to angle.Wherein, abs (z) indicates the absolute value of z.
The phase compensation value that phase estimation is obtained inputs to phase compensation block, compensates, and coordinate is carried out after compensation
Conversion, the form for being converted to cartesian coordinate are exported to post-module.
When the frequency deviation skew processing unit of the embodiment of the present invention is realized by functional element, frequency shown in fig. 6 can refer to
The structure composition schematic diagram of inclined skew processing unit, as shown in fig. 6, the frequency deviation skew processing unit includes:
First coordinate transformation unit 61, for by the first polarization signal and the second polarization signal point under cartesian coordinate system
The third polarization signal and the 4th polarization signal under polar coordinate system are not converted to；
Frequency offset compensation element 62, for carrying out frequency deviation compensation to the third polarization signal and the 4th polarization signal respectively,
Obtain compensated 5th polarization signal of frequency deviation and the 6th polarization signal；
Biquadratic frequency deviation estimating unit 63, for the 5th polarization signal and the 6th polarization signal to be divided into two-way, benefit
Biquadratic offset estimation is carried out with first via signal, obtains frequency deviation offset；
Biquadratic phase estimation unit 64 carries out biquadratic phase for the intermediate data using biquadratic offset estimation and estimates
Meter, obtains phase compensation value；
Phase compensation unit 65 believes the 5th polarization using the phase compensation value for being directed to second road signal
Number and the 6th polarization signal carry out phase compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation；
Second coordinate transformation unit 66, for by under polar coordinate system the 7th polarization signal and the 8th polarization signal turn respectively
The 9th polarization signal and the tenth polarization signal being changed under cartesian coordinate system.
In the embodiment of the present invention, the frequency offset compensation element 62 includes:
First frequency deviation compensates subelement 621, under polar coordinate system, by the angle value of the third polarization signal with estimate
It counts obtained frequency deviation offset and carries out addition processing, obtain compensated 5th polarization signal of frequency deviation；
Second frequency deviation compensates subelement 622, under polar coordinate system, by the angle value of the 4th polarization signal with estimate
It counts obtained frequency deviation offset and carries out addition processing, obtain compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
In the embodiment of the present invention, the biquadratic frequency deviation estimating unit 63 is also used to carry out four times using first via signal
Square offset estimation obtains frequency deviation offset, to carry out frequency deviation compensation to the third polarization signal and the 4th polarization signal；
The biquadratic phase estimation unit 64 is also used to carry out biquadratic using the intermediate data of biquadratic offset estimation
Phase estimation obtains phase compensation value, to carry out phase compensation to the 5th polarization signal and the 6th polarization signal.
In the embodiment of the present invention, first polarization signal and the second polarization signal are orthogonal two-way polarization signal.
In the embodiment of the present invention, the biquadratic frequency deviation estimating unit 63 is also used to for the 5th polarization signal being divided into
Two-way, and the 6th polarization signal is divided into two-way；It will the 5th polarization signal and the 6th polarization signal conduct all the way all the way
First via signal, using the 5th polarization signal of another way and the 6th polarization signal of another way as second road signal.
In the embodiment of the present invention, the 9th polarization signal and the tenth polarization signal are orthogonal two-way polarization signal, and
9th polarization signal is that the signal after the compensation deals of frequency deviation skew is carried out to first polarization signal, the tenth polarization
Signal is that the signal after the compensation deals of frequency deviation skew is carried out to second polarization signal.
It will be appreciated by those skilled in the art that the realization function of each unit in frequency deviation skew processing unit shown in fig. 6
It can refer to the associated description of aforementioned frequency deviation skew processing method and understand.Each list in frequency deviation skew processing unit shown in fig. 6
The function of member can be realized and running on the program on processor, can also be realized by specific logic circuit.
It will be appreciated by those skilled in the art that the function that each unit in the electronic equipment of the embodiment of the present invention is realized,
It can refer to the associated description of information processing method above-mentioned and understand, each unit in the electronic equipment of the embodiment of the present invention, it can
It, can also be by executing described in the embodiment of the present invention by realizing that the analog circuit of function described in the embodiment of the present invention is realized
Function operation of the software on intelligent terminal and realize.
It, in the absence of conflict, can be in any combination between technical solution documented by the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and smart machine, Ke Yitong
Other modes are crossed to realize.Apparatus embodiments described above are merely indicative, 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
It closes, or is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each group
Can be through some interfaces at the mutual coupling in part or direct-coupling or communication connection, equipment or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unit
The component shown can be or may not be physical unit, it can and it is in one place, it may be distributed over multiple network lists
In member；Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing unit,
It is also possible to each unit individually as a unit, can also be integrated in one unit with two or more units；
Above-mentioned integrated unit both can take the form of hardware realization, can also add the form of SFU software functional unit real using hardware
It is existing.
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 easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (12)
1. a kind of frequency deviation skew processing method, which is characterized in that the described method includes:
By under cartesian coordinate system the first polarization signal and the third that is respectively converted under polar coordinate system of the second polarization signal it is inclined
Shake signal and the 4th polarization signal；
Frequency deviation compensation is carried out to the third polarization signal and the 4th polarization signal respectively, obtains compensated 5th polarization of frequency deviation
Signal and the 6th polarization signal；
The 5th polarization signal and the 6th polarization signal are divided into two-way respectively, carry out biquadratic frequency deviation using first via signal
Estimation, obtains frequency deviation offset；Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, obtains phase benefit
Repay value；For second road signal, phase is carried out to the 5th polarization signal and the 6th polarization signal using the phase compensation value
Position compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation；
By under polar coordinate system the 7th polarization signal and the 8th polarization signal be respectively converted under cartesian coordinate system the 9th partially
Shake signal and the tenth polarization signal.
2. frequency deviation skew processing method according to claim 1, which is characterized in that described polarize respectively to the third is believed
Number and the 4th polarization signal carry out frequency deviation compensation, obtain compensated 5th polarization signal of frequency deviation and the 6th polarization signal, comprising:
Under polar coordinate system, the angle value of the third polarization signal is carried out being added place with the frequency deviation offset that estimation obtains
Reason, obtains compensated 5th polarization signal of frequency deviation；
Under polar coordinate system, the angle value of the 4th polarization signal is carried out being added place with the frequency deviation offset that estimation obtains
Reason, obtains compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
3. frequency deviation skew processing method according to claim 1, which is characterized in that described to carry out four using first via signal
Power offset estimation obtains frequency deviation offset；Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, is obtained
To phase compensation value, comprising:
Biquadratic offset estimation is carried out using first via signal, obtains frequency deviation offset, to the third polarization signal and the
Four polarization signals carry out frequency deviation compensation；
Biquadratic phase estimation is carried out using the intermediate data of biquadratic offset estimation, phase compensation value is obtained, to described the
Five polarization signals and the 6th polarization signal carry out phase compensation.
4. frequency deviation skew processing method according to any one of claims 1 to 3, which is characterized in that the first polarization letter
Number and the second polarization signal be orthogonal two-way polarization signal.
5. frequency deviation skew processing method according to claim 4, which is characterized in that the 9th polarization signal and the tenth is partially
Vibration signal is orthogonal two-way polarization signal, and the 9th polarization signal is to carry out frequency deviation skew to first polarization signal
Signal after compensation deals, the tenth polarization signal are after carrying out the compensation deals of frequency deviation skew to second polarization signal
Signal.
6. frequency deviation skew processing method according to claim 1, which is characterized in that respectively by the 5th polarization signal and
6th polarization signal is divided into two-way, comprising:
5th polarization signal is divided into two-way, and the 6th polarization signal is divided into two-way；
With the 6th polarization signal all the way will be used as first via signal by the 5th polarization signal all the way, by the 5th polarization signal of another way and
The 6th polarization signal of another way is as second road signal.
7. a kind of frequency deviation skew processing unit, which is characterized in that described device includes:
First coordinate transformation unit, for by under cartesian coordinate system the first polarization signal and the second polarization signal convert respectively
For the third polarization signal and the 4th polarization signal under polar coordinate system；
Frequency offset compensation element obtains frequency for carrying out frequency deviation compensation to the third polarization signal and the 4th polarization signal respectively
The 5th polarization signal and the 6th polarization signal after offset compensation；
Biquadratic frequency deviation estimating unit is utilized for the 5th polarization signal and the 6th polarization signal to be divided into two-way respectively
First via signal carries out biquadratic offset estimation, obtains frequency deviation offset；
Biquadratic phase estimation unit is obtained for carrying out biquadratic phase estimation using the intermediate data of biquadratic offset estimation
To phase compensation value；
Phase compensation unit, for being directed to second road signal, using the phase compensation value to the 5th polarization signal and the
Six polarization signals carry out phase compensation, the 7th polarization signal and the 8th polarization signal after obtaining phase compensation；
Second coordinate transformation unit, for by under polar coordinate system the 7th polarization signal and the 8th polarization signal be respectively converted into flute
The 9th polarization signal and the tenth polarization signal under karr coordinate system.
8. frequency deviation skew processing unit according to claim 7, which is characterized in that the frequency offset compensation element includes:
First frequency deviation compensates subelement, under polar coordinate system, the angle value of the third polarization signal to be obtained with estimation
Frequency deviation offset carry out addition processing, obtain compensated 5th polarization signal of frequency deviation；
Second frequency deviation compensates subelement, under polar coordinate system, the angle value of the 4th polarization signal to be obtained with estimation
Frequency deviation offset carry out addition processing, obtain compensated 6th polarization signal of frequency deviation；
Wherein, the frequency deviation offset is angle value.
9. frequency deviation skew processing unit according to claim 7, which is characterized in that the biquadratic frequency deviation estimating unit,
Be also used to carry out biquadratic offset estimation using first via signal, obtain frequency deviation offset, with to the third polarization signal and
4th polarization signal carries out frequency deviation compensation；
The biquadratic phase estimation unit is also used to carry out biquadratic phase using the intermediate data of biquadratic offset estimation to estimate
Meter, obtains phase compensation value, to carry out phase compensation to the 5th polarization signal and the 6th polarization signal.
10. frequency deviation skew processing unit according to any one of claims 7 to 9, which is characterized in that the first polarization letter
Number and the second polarization signal be orthogonal two-way polarization signal.
11. frequency deviation skew processing unit according to claim 10, which is characterized in that the 9th polarization signal and the tenth
Polarization signal is orthogonal two-way polarization signal, and the 9th polarization signal is to carry out frequency deviation phase to first polarization signal
Offset compensation treated signal, the tenth polarization signal are after carrying out the compensation deals of frequency deviation skew to second polarization signal
Signal.
12. frequency deviation skew processing unit according to claim 7, which is characterized in that the biquadratic frequency deviation estimating unit,
It is also used to for the 5th polarization signal being divided into two-way, and the 6th polarization signal is divided into two-way；Will all the way the 5th partially
Vibration signal, as first via signal, the 5th polarization signal of another way and the polarization of another way the 6th is believed with the 6th polarization signal all the way
Number be used as second road signal.
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| CN113691320B (en) * | 2020-05-19 | 2022-08-09 | 华为技术有限公司 | Digital signal processing method and related equipment |
| CN112600777B (en) * | 2020-12-08 | 2022-11-22 | 上海擎昆信息科技有限公司 | Frequency offset compensation method and device suitable for 5G-NR receiver |
| CN113743655B (en) * | 2021-08-12 | 2024-02-02 | 中铁资源集团有限公司 | Resource quantity estimation method based on mixed overall screening |
| CN114499691B (en) * | 2022-01-05 | 2023-09-29 | 复旦大学 | Low-delay phase offset recovery circuit based on Cartesian coordinate and polar coordinate fusion |
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