CN1635711A - An apparatus and method for implementing data signal mode decision - Google Patents

An apparatus and method for implementing data signal mode decision Download PDF

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CN1635711A
CN1635711A CN 200310110390 CN200310110390A CN1635711A CN 1635711 A CN1635711 A CN 1635711A CN 200310110390 CN200310110390 CN 200310110390 CN 200310110390 A CN200310110390 A CN 200310110390A CN 1635711 A CN1635711 A CN 1635711A
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pilot
pattern
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CN100362762C (en
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吴涛
官波
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Huawei Technologies Co Ltd
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Abstract

This invention discloses a device for realizing data signal mode judgment, which contains accumulator module, calculation module, control module, modes corresponding symbol generating module and mode judgment module. Said invention also discloses a method for realizing data signal mode judgment, which contains modifying rotary angle resulting from channel by vector accumulation to known pilot frequency of mode utilizing the property of when two vectors are in same direction their sum mode value or energy value is the maximum, accumulating and adding in sequence the data signal with pilot frequency which are to be judged, judging out the data symbol corresponded by vector sum mode value or energy value maximum mode. Said invention greatly reduces data signal judgment error ratio, raises wireless communication system capacity and improves wireless communication system performance.

Description

A kind of device and method of realizing the data signal pattern judgement
Technical field
The present invention relates to a kind of wireless receiving treatment technology of digital signal, particularly relate to a kind of device and method of realizing the data signal pattern judgement.
Background technology
Wireless communication system generally belongs to digital system, the characteristics of this system are that the pattern that transmits is limited, thereby can rule out the pattern that transmits at receiving terminal, pattern is meant the symbol that institute might launch in the signal emission, a string 0,1 code of correspondence.Between the subscriber equipment and base station of wireless communication system, signal is propagated by wireless channel, there are many interference such as decline, multipath in the relative wire message way of wireless channel, thereby causes receiving terminal inaccurate to the judgement of wireless signal pattern, has the problem of the bigger error rate.
At present, code division multiple access (CDMA, Code Division Multiple Access) system becomes one of mainstream technology of wireless communication system just gradually.Cdma system has that power system capacity is big, the availability of frequency spectrum is high, background noise is suppressed advantages such as good and good confidentiality, but, cdma system at the same time with same frequency have that a plurality of users transmit may, so this system is except existing interference such as decline, multipath, also there are phase mutual interference and multiple access interference (MAI between different user, Multiple Access Interference) problem, the reception of its wireless signal are handled difficulty more.In recent years, Multiuser Detection (MUD, Multi-User Detection) development of technology, adaptive equalization technique and intelligent antenna technology, for the wireless signal receptivity that further improves cdma system provides possibility, simultaneously, the development of these technology and practical application are also had higher requirement to the reception of system wireless signal.
Therefore, the receiving handling method of wireless signal is directly to influence the performance of wireless communication system and even a deciding factor of its development.
Fig. 1 is the angle rotation schematic diagram of received signal vector with respect to the vector that transmits.As shown in Figure 1, when receive handling wireless signal,, cause the received signal direction direction that transmits relatively to have an anglec of rotation ω owing to the user moves and the reasons such as modulation difference on the frequency of radio frequency.At receiving terminal, anglec of rotation ω will have a strong impact on the judgement of wireless signal pattern, therefore, must estimate and compensate this rotation when judgement, to reduce the error rate of judgement.
In order to solve the problem of the above-mentioned anglec of rotation, present wireless signal receives the method that treatment technology adopts channel estimating, in transmitting, insert some pilot signals, pilot signal is the known signal of pattern in the emission data, obtain the information of the anglec of rotation by pilot signal, and according to the rotation angle information that obtains data-signal is compensated, data-signal is the signal of pattern the unknown in the emission data, rules out the pattern of the data-signal after the compensation then.
Pilot tone is inserted principle: the insertion quantity of pilot signal depends on the data format of wireless communication system and the situation of communication channel, and satisfies the required time decision T of unit mode adjudging data field 1Be far smaller than the rotation that channel causes and cause oppositely required time T of received signal vector 2, wherein, the length of unit mode adjudging data field depends on communication protocol.
Fig. 2 is a kind of data structure schematic diagram of signal transmission.As shown in Figure 2, { continuous pilot signal, continuous data-signal } i.e. data format of { pilot field, data field } has been adopted in the signal transmission.Pilot field is meant in the emission data, has known the symbol that transmits in advance, is used to estimate the data field of other position signalling, i.e. the data field at pilot signal place; Data field is meant in the emission data, the part except pilot field, the i.e. data field at data-signal place.Referring to Fig. 2, in the method that adopts channel estimating, a kind of zeroth order keeps the implementation of method to be:
The first step: the anglec of rotation ω that calculates the pilot field signal after the initial demodulation n, ω n = tan - 1 ( Σ i = 1 N p r i × p i * ) . In this formula, N pBe the number of the pilot signal that receives, r iBe i pilot signal, vector r iEmission angle be α, P iBe r iCorresponding emission symbol, it comprises r iEmission information, so vector P iAngle be α, " * " is for asking conjugate operation.At formula r i* p i *In, vector p i *Angle be (α), pilot signal r iAngle be the r that emission angle α and channel cause iAnglec of rotation ω sum (α+ω).Computing r i* p i *, the mould value that comes down to this two vector multiplies each other, the angle value addition, and the angle of the pilot vector that this computing calculates is ω.By carrying out computing r i* p i *, removed pilot signal r iEmission angle α, only be preserved for the anglec of rotation ω that estimates and compensate, thereby eliminated the influence that emission angle α may bring to judgement.Formula Σ i = 1 N p r i × p i * Be that all pilot signal vector of removing behind emission angles in the pilot field are added up, calculate that a vector pilot tone adds up and, this pilot tone add up and angle be the anglec of rotation ω of the pilot field signal that causes of channel nInsert T in the principle based on pilot tone 1Be far smaller than T 2, can think the anglec of rotation ω of pilot field signal nVery little, so have tan ω n = Σ i = 1 N p r i × p i * , Promptly ω n = tan - 1 ( Σ i = 1 N p r i × p i * ) .
Second step: the data field signal after the initial demodulation is compensated.Insert T in the principle based on pilot tone 1Be far smaller than T 2, can think that the pilot field signal is consistent with the angle of data field signal rotation, so the anglec of rotation of data field signal is exactly the ω of aforementioned calculation gained n, with each data-signal reverse rotation ω in the data field n, promptly carry out computing r ′ k = r k × e - j ω n , In this formula, r kBe k data-signal, r ' kBe the data-signal after the compensation.With r kMultiply by angle and be (ω n) unit vector, be exactly in fact vector r kReverse rotation ω n, reach offset data signal r kPurpose.
The 3rd step: to the data-signal r ' after the compensation kCarry out mode adjudging.
But, in this method based on channel estimating, ω nThe calculating of value is to have noise in an approximate calculation and the frequency pilot sign that receives pilot tone, and these all cause anglec of rotation ω nEstimate inaccurately, this inaccurate degree and then be exaggerated when compensation data finally causes the error rate height of data signal pattern judgement, reduces the error rate if increase the transmitting power of system, can increase the interference to other users again.So it is poor with the method for this channel estimating data-signal to be carried out the mode adjudging effect.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that realizes the data signal pattern judgement,, reduce the error rate of data signal pattern judgement greatly, improve the performance of wireless communication system by revising the signal rotation angle that channel causes better.
Another object of the present invention is to provide a kind of device of realizing the data signal pattern judgement, make it can be convenient to upgrade and safeguard, thereby adapt to the fast development of wireless communication system better.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes the data signal pattern judgement may further comprise the steps:
A, judge that the current demand signal after the initial demodulation is pilot signal or data-signal, if pilot signal, execution in step B then is if data-signal, then execution in step C;
B, with pilot signal with gripping altogether of emission symbol that should pilot signal multiplied each other, it is long-pending to obtain pilot vector, add up and sue for peace with last pilot tone this pilot vector is long-pending, obtain current pilot add up and, the counting that will be used to add up the processed signal number add up and value increase by one, obtain current counting add up and, judge then that current counting adds up and value whether be the number of the signal that comprised of unit mode adjudging data field, if, then current counting is added up and zero clearing and current pilot added up and zero clearing and return steps A, otherwise, directly return steps A;
C, gripping altogether of the emission symbol that data-signal is corresponding with each pattern of data-signal respectively multiplied each other, obtain the data-signal of each pattern correspondence, current pilot is added up and corresponding with this each pattern respectively data-signal summation, obtain each pattern vector and, calculate again this each pattern vector and mould value or energy value, adjudicate the pattern of depanning value or energy value maximum then, export the data symbol of this mould value or energy value max model, counting added up and value increase by one, obtain current counting add up and, judge then that current counting adds up and value whether be the number of the signal that comprised of unit mode adjudging data field, if, then current counting is added up and zero clearing and current pilot added up and zero clearing and return steps A, otherwise, steps A directly returned.
The step of the data symbol of step C described output mould value or energy value max model further comprises: the data signal vector and the last pilot tone of mould value or energy value max model correspondence are added up and sue for peace, obtain current pilot add up and.
A kind of device of realizing the data signal pattern judgement comprises with lower module: accumulator module, and the corresponding symbol generation module of each pattern, computing module, mode adjudging module and control module, wherein,
Accumulator module receive the pilot signal after the initial demodulation, and one by one that each pilot signal is corresponding with it gripping altogether of emission symbol is multiplied each other, it is long-pending to obtain each pilot vector, with the long-pending addition of all pilot vector, calculate that pilot tone adds up and, then pilot tone is added up and outputs to computing module;
The corresponding symbol generation module of each pattern produces the emission symbol of each pattern correspondence of data-signal, and the emission symbol of this each pattern correspondence is outputed to computing module;
Computing module, gripping altogether of the emission symbol that data-signal is corresponding with each pattern of data-signal respectively multiplied each other, obtain the data-signal of each pattern correspondence, calculate respectively then that current pilot adds up and the vector of the data-signal corresponding with this each pattern and, and calculate respectively this each pattern vector and mould value or energy value, then the mould value that calculates or the data-signal of energy value and each pattern are outputed to the mode adjudging module;
The mode adjudging module, the mould value that obtains in selection and the output computing module or the data symbol of energy value max model;
Control module is to each module difference output enable signal of accumulator module, the corresponding symbol generation module of each pattern, computing module and mode adjudging module, the work schedule between control module.
The mode adjudging module further outputs to accumulator module with the data signal vector of mould value or energy value max model correspondence, accumulator module adds up the data signal vector and the last pilot tone of this mould value or energy value max model correspondence and sue for peace, obtain current pilot add up and.
As seen, the present invention is the apparatus moduleization of data signal pattern judgement, is convenient to this device is upgraded and safeguarded, on the other hand, when engineering is used, is convenient to the batch process of equipment, thereby adapted to the fast development of wireless communication technology better.
The method that the present invention proposes, when having utilized two vectors equidirectional itself and mould value or maximum this character of energy value, each data-signal is analyzed respectively and handled, avoided utilizing in the prior art pilot frequency information that all signals in the data field are unified to compensate and do not consider the drawback that the rotation situation between each data-signal may there are differences.According to the proposed method, the data signal vector of the mould value that rules out or energy value max model correspondence is introduced pilot tone add up, played the effect of the real-time correction anglec of rotation.The inventive method greatly reduces the error rate of data signal pattern judgement, thereby helps the user to reduce transmitting power, save cost, and then has improved the capacity of wireless communication system, has improved the performance of wireless communication system.
Description of drawings
Fig. 1 is the angle rotation schematic diagram of received signal vector with respect to the vector that transmits;
Fig. 2 is a kind of data structure schematic diagram of signal transmission;
Fig. 3 is the flow chart of the inventive method;
Fig. 4 is that the present invention uses the BPSK apparatus structure schematic diagram in when modulation;
Fig. 5 is the flow chart that the inventive method is introduced court verdict;
The Matlab analogous diagram of the inventive method and prior art performance comparison when the user moves with friction speed when Fig. 6 is to use the BPSK modulation;
Fig. 7 is to use the Matlab analogous diagram of BPSK when modulation the inventive method and prior art performance comparison under the different number of pilots of insertion;
Fig. 8 is apparatus of the present invention structural representations;
Fig. 9 is the apparatus structure schematic diagram that the present invention introduces court verdict.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the data structure schematic diagram of a kind of signal transmission, and Fig. 3 is the flow chart of the inventive method, and Fig. 4 is the apparatus structure schematic diagram of the present invention when using the BPSK modulation.Utilize apparatus of the present invention to realize the method for data signal pattern judgement below in conjunction with Fig. 2, Fig. 3 and Fig. 4 introduction.
In the present embodiment, at transmitting terminal signal is carried out biphase phase shift keying (BPSK, Binary PhaseShift Keying) modulation, and adopt pilot interposition method shown in Figure 2, for the signal transmission structure that other pilot interposition method constitutes, the inventive method is still set up.
The BPSK modulation utilizes to be carried out representing 0 and 1 of binary signal with respect to the phase shift modulated of positive and negative 90 degree of reference point to carrier wave, promptly the phase is regarded a symbol as weekly, a symbol passes through 180 ° of phase shifts to next symbol, and each symbol is sent a bit and represented a high position or low level.Therefore, when adopting the BPSK modulation, there is the data signal pattern M (M is 0 or 1) of two kinds of needs judgements, be modulated to 1 ,-1}.The detailed process that realizes the data signal pattern judgement may further comprise the steps:
Step 301: counting is added up and C zero clearing (C=0), and counting adds up and C is used to add up the pilot signal of the inventive method processing and the number of data-signal.
Step 302: judge that counting adds up and whether the value of C equals zero, if C=0, judgement to all signals in the unit mode adjudging data field is not adjudicated or finished to indication device also to the signal r after the initial demodulation so, and then execution in step 303; If C ≠ 0, indication device is not finished the judgement to all signals in the unit mode adjudging data field so, and then execution in step 304.
Step 303: the vector pilot tone is added up and S pZero clearing (S p=0+j0).
Step 304: judge that the signal r after the initial demodulation is pilot signal r iOr data-signal r k, if pilot signal r i, then execution in step 305, if data-signal r k, execution in step 306～step 308 then.
Step 305: calculate current pilot and add up and S p, S p=S p+ r i* p i *In this formula, vector r iBe i pilot signal after the initial demodulation, r iArgument be the anglec of rotation ω sum that causes of emission angle α and channel (α+ω); Vector p iBe r iCorresponding emission symbol, it has comprised r iEmission information, so vector p iArgument be exactly this pilot signal r iEmission angle α, " * " is for asking conjugate operation, so vector p i *Argument be (α).Because two vectors multiply each other, the mould value that comes down to this two vector multiplies each other, and therefore the angle value addition carries out computing r i* p i *After, the argument of gained vector product is ω.By carrying out computing r i* p i *, removed pilot signal r iEmission angle α, only keep this pilot signal r that channel causes iAnglec of rotation ω, thereby eliminated the influence that emission angle α may bring to judgement.Formula S p=S p+ r i* p i *In, the S on equal sign the right pFor last pilot tone add up and, the S on the equal sign left side pFor current pilot add up and, according to the parallelogram law of vector addition as can be known, computing (S p+ r i* p i *) the effect on the angle be exactly revise once that pilot tone adds up and the anglec of rotation, obtain that current pilot adds up and.
Step 306: device produces the BPSK modulation emission symbol t of two kinds of pattern correspondences of data-signal down M, t MBe 1 or-1 (when vector calculus, be to simplify computing, can be with t MBe considered as unit vector, i.e. e J0Or e J180), make r ' M=r k* t M *, in this formula, vector r kFor k data-signal after the initial demodulation, by carrying out computing r k* t M *, removed data-signal r kEmission angle α ', only keep this data-signal r that channel causes kAnglec of rotation ω ', thereby eliminated the influence that emission angle α ' may bring to judgement, and this computing has produced the BPSK modulation vector r ' of pattern 1 correspondence down M1The vector r ' of (corresponding data symbol 0) and pattern 2 correspondences M2(corresponding data symbol 1).
Step 307～step 308: insert T in the principle according to pilot tone 1Be far smaller than T 2, can think that pilot signal is consistent with the anglec of rotation of data-signal, promptly also answer consistent with the direction of data-signal in the received pilot signal of receiving terminal.If the direction unanimity of two signals, so this two signal phasor and mould value or energy value maximum.Utilize this character, calculate vector r ' M1Add up and S with current pilot pVector and (S p+ r ' M1), and calculate this vector and (S p+ r ' M1) mould value or energy value A; Calculate vector r ' M2Add up and S with current pilot pVector and (S p+ r ' M2), and calculate this vector and (S p+ r ' M2) mould value or energy value B, relatively A and B are if A greater than B, then adds up and S with current pilot as can be known pThe pattern of the pattern 1 of direction unanimity (corresponding data symbol 0) for receiving, then the dateout symbol 0; If A less than B, then adds up and S with current pilot as can be known pThe pattern of the pattern 2 of direction unanimity (corresponding data symbol 1) for receiving, then the dateout symbol 1.
Step 309: the order counting adds up and the value of C increases by one (C=C+1), and the pilot signal of promptly having handled and the number of data-signal increase by one.
Step 310: judge that counting adds up and whether the value of C equals the signal number N that our unit's mode adjudging data field is comprised, if C=N, indication device has been finished the judgement to all signals in our unit's mode adjudging data field so, then return step 301, next unit mode adjudging data field is adjudicated; If C ≠ N, indication device is not finished the judgement to all signals in our unit's mode adjudging data field so, then returns step 302, and the next signal in our unit's mode adjudging data field is adjudicated.
In the present embodiment, after transmitting terminal carries out the BPSK modulation to signal, the data signal vector that only has two kinds of pattern correspondences, a kind of is the data signal vector consistent with pilot vector and direction that receive, another kind is the data signal vector different with pilot vector and direction that should not receive, two kinds of pattern vectors that therefore calculate and (S p+ r ' M1) and (S p+ r ' M2) mould value or energy value unequal.
When the data-signal that has carried out other modulation is carried out mode adjudging, since the data signal vector that only should receive and pilot tone add up with addition after the gained vector and mould value or energy value maximum, promptly only there are a maximum norm value or energy value, so if each pattern vector that calculates and (S p+ r ' M) the mould value or energy value occur to equate situation the time, equal mould value or energy value are maximum scarcely, only need all vectors and (S when promptly adjudicating p+ r ' M) mould value or energy value compare, select and the data symbol of output mould value or energy value max model correspondence.
Fig. 5 is the flow chart that the inventive method is introduced court verdict.As shown in Figure 5, the inventive method also can be introduced pilot tone with court verdict and add up, promptly finish step 501 shown in Figure 5, the mould value that rules out or the data signal vector M ' of energy value max model correspondence added up and add up with last pilot tone, calculate that current pilot adds up and.
Court verdict is introduced the purpose that pilot tone adds up is: no matter be pilot signal or data-signal, its essence all is the wireless signal that has passed through same transmission course, and the pattern of pilot signal is known, the pattern of data-signal needs judgement, so, the data-signal mould value that rules out or the vector and the pilot tone of energy value max model correspondence are added up and add up, played real-time description and revised the effect of the anglec of rotation.
The Matlab analogous diagram of the inventive method and prior art performance comparison when the user moves with friction speed when Fig. 6 is to use the BPSK modulation, Fig. 7 is to use the Matlab analogous diagram of BPSK when modulation the inventive method and prior art performance comparison under the different number of pilots of insertion, from Fig. 6 and Fig. 7, can see, adopt the inventive method that data-signal is carried out mode adjudging, its error rate is much smaller than the error rate of prior art judgement.
Fig. 8 is apparatus of the present invention structural representations, as shown in Figure 8, the inventive system comprises with lower module:
(1) accumulator module 801: this module 801 is used to receive the pilot signal r after the initial demodulation i, and remove the pilot signal vector r that receives iEmission angle, all pilot signal vector that will remove again behind the emission angle add up, calculate that current pilot adds up and, promptly finish and calculate S p=S p+ r i* p i *, and the current pilot that calculates added up and S pOutput to computing module 803;
(2) corresponding symbol generation module 802 of each pattern: this module 802 is used to produce the emission symbol t of each pattern correspondence of data-signal M, t MEffect be each pattern of characterization data signal respectively, then with t MOutput to computing module 803;
(3) computing module 803: be used for calculated data signal r kThe data-signal r ' of each pattern correspondence M(r ' M=r k* t M *), and calculate current pilot tone respectively and add up and the corresponding data-signal r ' of each pattern of Sp and this MVector and (S p+ r ' M), calculate each pattern vector and (S more respectively p+ r ' M) mould value or energy value, all mould values that will calculate then or energy value and each r ' MOutput to mode adjudging module 804;
(4) the mode adjudging module 804: be used for selecting and export the mould value that computing module 803 obtains or the data symbol M of energy value max model;
(5) control module 805: this module 805 links to each other with mode adjudging module 804 with above-mentioned accumulator module 801, the corresponding symbol generation module 802 of each pattern, computing module 803, to above-mentioned other each module output enable signal, control the work schedule of each intermodule.
Fig. 9 is the apparatus structure schematic diagram that the present invention introduces court verdict, as shown in Figure 9, in device of the present invention, mode adjudging module 804 can output to accumulator module 801 with the mould value that rules out or the data signal vector M ' of energy value max model correspondence, in accumulator module 801, finish will the input the mould value or the data signal vector M ' of energy value max model correspondence add up and add up with last pilot tone, obtain current pilot add up with.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1, a kind of method that realizes the data signal pattern judgement is characterized in that this method may further comprise the steps:
A, judge that the current demand signal after the initial demodulation is pilot signal or data-signal, if pilot signal, execution in step B then is if data-signal, then execution in step C;
B, with pilot signal with gripping altogether of emission symbol that should pilot signal multiplied each other, it is long-pending to obtain pilot vector, add up and sue for peace with last pilot tone this pilot vector is long-pending, obtain current pilot add up and, the counting that will be used to add up the processed signal number add up and value increase by one, obtain current counting add up and, judge then that current counting adds up and value whether be the number of the signal that comprised of unit mode adjudging data field, if, then current counting is added up and zero clearing and current pilot added up and zero clearing and return steps A, otherwise, directly return steps A;
C, gripping altogether of the emission symbol that data-signal is corresponding with each pattern of data-signal respectively multiplied each other, obtain the data-signal of each pattern correspondence, current pilot is added up and corresponding with this each pattern respectively data-signal summation, obtain each pattern vector and, calculate again this each pattern vector and mould value or energy value, adjudicate the pattern of depanning value or energy value maximum then, export the data symbol of this mould value or energy value max model, counting added up and value increase by one, obtain current counting add up and, judge then that current counting adds up and value whether be the number of the signal that comprised of unit mode adjudging data field, if, then current counting is added up and zero clearing and current pilot added up and zero clearing and return steps A, otherwise, steps A directly returned.
2, method according to claim 1, it is characterized in that, the step of the data symbol of step C described output mould value or energy value max model further comprises: the data signal vector and the last pilot tone of mould value or energy value max model correspondence are added up and sue for peace, obtain current pilot add up and.
3, a kind of device of realizing the data signal pattern judgement is characterized in that this device comprises with lower module: accumulator module, and the corresponding symbol generation module of each pattern, computing module, mode adjudging module and control module, wherein,
Accumulator module receive the pilot signal after the initial demodulation, and one by one that each pilot signal is corresponding with it gripping altogether of emission symbol is multiplied each other, it is long-pending to obtain each pilot vector, with the long-pending addition of all pilot vector, calculate that pilot tone adds up and, then pilot tone is added up and outputs to computing module;
The corresponding symbol generation module of each pattern produces the emission symbol of each pattern correspondence of data-signal, and the emission symbol of this each pattern correspondence is outputed to computing module;
Computing module, gripping altogether of the emission symbol that data-signal is corresponding with each pattern of data-signal respectively multiplied each other, obtain the data-signal of each pattern correspondence, calculate respectively then that current pilot adds up and the vector of the data-signal corresponding with this each pattern and, and calculate respectively this each pattern vector and mould value or energy value, then the mould value that calculates or the data-signal of energy value and each pattern are outputed to the mode adjudging module;
The mode adjudging module, the mould value that obtains in selection and the output computing module or the data symbol of energy value max model;
Control module is to each module difference output enable signal of accumulator module, the corresponding symbol generation module of each pattern, computing module and mode adjudging module, the work schedule between control module.
4, device according to claim 3, it is characterized in that, the mode adjudging module further outputs to accumulator module with the data signal vector of mould value or energy value max model correspondence, accumulator module adds up the data signal vector and the last pilot tone of this mould value or energy value max model correspondence and sue for peace, obtain current pilot add up and.
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