CN102457454A - Method, device and system for processing multiple paths of single-carrier signals - Google Patents

Method, device and system for processing multiple paths of single-carrier signals Download PDF

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CN102457454A
CN102457454A CN201010517556XA CN201010517556A CN102457454A CN 102457454 A CN102457454 A CN 102457454A CN 201010517556X A CN201010517556X A CN 201010517556XA CN 201010517556 A CN201010517556 A CN 201010517556A CN 102457454 A CN102457454 A CN 102457454A
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刘向宇
郁光辉
鲁照华
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ZTE Corp
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Abstract

The invention relates to technologies in the field of communication, in particular to a method, a device and a system for processing multiple paths of single-carrier signals. The method comprises the following steps of: acquiring a plurality of training sequences which are in accordance with a sequence standard, wherein the sequence standard is that: self-correlation values of the training sequences are 0 in windows which are symmetric about zero time delay, and mutual correlation values of any two training sequences are 0 in the windows which are symmetric about the zero time delay; repeatedly arranging each training sequence which is in accordance with the sequence standard so as to form a path of training frame; and modulating each path of training frame into a single-carrier signal to form multiple paths of single-carrier signals. By the method, the device and the system for processing multiple paths of single-carrier signals, the training frames are formed by the plurality of training sequences acquired and in accordance with the sequence standard and are modulated into the single-carrier signals, so that the multiple paths of single-carrier signals are formed.

Description

A kind of method of process multi-channel single-carrier signal, Apparatus and system
Technical field
The present invention relates to technical field of communication, relate in particular to a kind of method, Apparatus and system of process multi-channel single-carrier signal.
Background technology
Current; In wireless communication system and the wired communication system; Single-carrier signal linear modulation emission system is because its maturity, simplicity and the high-rate characteristics in some channels, in occupation of the important share in communication system market, and adopted by the different communication standard agreement.In many continuous perhaps Packet data services; Also all adopted this single carrier symbol linear modulate emission system; For example ground cable digital TV, satellite digital TV; The microwave relay link, satellite ground TDMA (Time Division Multiple Access, time division multiple access) packet communication etc.
On the one hand, in wireless communication system and the wired communication system, during the emission single-carrier signal,, use the various signals method for synchronous according to the difference of type of service.In many method for synchronous, use the method for synchronous training sequence to use comparatively general.The form of synchronous training sequence and Design of Signal directly influence the effect of signal Synchronization, and preferable synchronous training symbol sequence can help signal receiving end to accomplish synchronous task smoothly, perhaps can accomplish slightly catching fast of most of signal parameter.
On the other hand, current wireless communication system and wired communication system are when transmitting, because the influence of interchannel, produce ISI (IntersymbolInterference, intersymbol interference) between the time-domain symbol of the single-carrier signal that may cause launching.In order to overcome this intersymbol interference; Use the equalizer of time domain or frequency domain that single-carrier signal is carried out equilibrium; Such as at DVB-C (Digital Video Broadcasting-Cable; Digital multimedia cable broadcasting) receiver uses time domain DFE (Decision FeedbackEqualization, DFF) in the system.When equalizer is started working; Need the parameter of filter be restrained; Usually use the algorithm that depends on known training sequence during convergence, because it can make full use of the information of known training sequence, thus convergence fast and efficiently; Rapid adaptive channel, and under lower signal to noise ratio condition, also have better performance.Receive-transmit system begins formally to send before the data, at first sends the synchronous training frames that known symbol is formed, and makes receiving terminal make full use of relevant information convergence fast under abominable channel of training frames.
On the one hand, some communication system (like the single carrier wireless transmitting system) is often used multiplex techniques, such as utilizing different polarised directions to carry out multiplexing or utilizing different antennas to carry out multiplexing etc. in the space again.Yet, can phase between the signal between not going the same way mutual interference, utilize equalizer that this multiple signals are carried out in the interference cancellation process, need the correlation between the training sequence of multiple signals less.Simultaneously, carry out also requiring the correlation between the synchronous training frames less when multichannel is synchronous.
In sum; Training frames should go for synchronously; Application facet such as single channel equilibrium and multiplexing equilibrium, this requires training frames to have the characteristic that satisfies synchronous requirement, single channel equilibrium and multichannel equalization request simultaneously; Yet synchronous training frames of the prior art is only applicable to above-mentioned certain applications aspect.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system of process multi-channel single-carrier signal, distinguishes the composing training frames through obtaining a plurality of training sequences that meet the sequence standard, and is modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.
The embodiment of the invention provides a kind of method of process multi-channel single-carrier signal, and this method comprises:
Obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
With each said training sequence difference repeated arrangement that meets the sequence standard, form one road training frames separately;
The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal.
Accordingly, the embodiment of the invention provides a kind of device of process multi-channel single-carrier signal, comprising:
Acquiring unit; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
Arrangement units is used for each said training sequence difference repeated arrangement that meets the sequence standard is formed one road training frames separately;
Modulating unit is used for the said training frames in each road being modulated to single-carrier signal respectively, the channeling single-carrier signal.
Accordingly, the embodiment of the invention provides a kind of system of process multi-channel single-carrier signal, comprising:
Transmitting terminal; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry; With each said training sequence difference repeated arrangement that meets the sequence standard, form one road training frames separately; The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal;
Receiving terminal is used to receive said MF Multi-Channel Per Carrier signal.
The embodiment of the invention provides a kind of method, Apparatus and system of process multi-channel single-carrier signal; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry; With each said training sequence difference repeated arrangement that meets the sequence standard, form one road training frames separately; The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal.Method, the Apparatus and system of the process multi-channel single-carrier signal that the use embodiment of the invention provides are distinguished the composing training frames through obtaining a plurality of training sequences that meet the sequence standard, and are modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.Because a plurality of training frames that obtain, its auto-correlation function value in about the window of zero time delay are zero, and the cross-correlation function of any two training sequences value in about the window of zero time delay also is zero; Thus; The training frames that uses this training sequence to form can be applied to synchronous and balanced simultaneously, and multichannel can guarantee that under low signal-to-noise ratio each road signal is independent not to interfere with each other synchronously when synchronous; Multichannel guarantees that each road correlation between signals is minimum when balanced; Even in multiple signals life period deviation,, just can guarantee that correlation is still minimum as long as the time domain side-play amount is no more than some symbols.
Description of drawings
Fig. 1 is the method flow sketch map of process multi-channel single-carrier signal in the embodiment of the invention;
Fig. 2 is a training frames structural representation in the embodiment of the invention;
Fig. 3 is an auto-correlation function image sketch map in the embodiment of the invention;
Fig. 4 is embodiment of the invention acceptance of the bid cross-correlation function image sketch map;
Fig. 5 is a QPSK modulation system planisphere in another embodiment of the present invention;
Fig. 6 is the method flow sketch map of process multi-channel single-carrier signal in another embodiment of the present invention;
Fig. 7 is the apparatus structure sketch map of process multi-channel single-carrier signal in the embodiment of the invention;
Fig. 8 is the system configuration sketch map of process multi-channel single-carrier signal in the embodiment of the invention.
Embodiment
At length set forth to the main realization principle of embodiment of the invention technical scheme, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
In order to solve the problem that prior art exists; The embodiment of the invention provides a kind of method of process multi-channel single-carrier signal; Make the training frames that is modulated to single-carrier signal can serve the synchronous and multichannel equilibrium of multichannel simultaneously, can not produce the phase mutual interference when multichannel is synchronous, the correlation when multichannel is balanced between each road is low; As shown in Figure 1, this method may further comprise the steps:
Step 101, obtain a plurality of training sequences that meet the sequence standard, this sequence standard comprises: the autocorrelation value of training sequence is 0 in the window about the zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
Concrete, as shown in Figure 2, a plurality of training sequences are formed one road training frames; Every road training frames forms one tunnel single-carrier signal after advancing ovennodulation; Suppose to have Z road training frames, be designated as respectively F (1), F (2), F (3) ..., F (Z), each road training frames is that the training sequence repeated arrangement of P forms for K time by a segment length; Length in the training frames of j road is the training sequence of P; Be designated as S (j), j=1,2,3 ..., Z, and the training sequence of above-mentioned multichannel should satisfy the requirement of following sequence standard:
1, the autocorrelation value of training sequence is 0 in the window about the zero time delay symmetry;
That is: the training sequence A=(a that to establish a length be P 0, a 1, a 2..., a P-1), its auto-correlation function is defined as:
AC ( τ ) = Σ j = 0 p - 1 a j · a ( j + τ ) mod p *
Wherein, τ is the figure place of training sequence A cyclic shift, and j is that the j bit among the training sequence A is plain, and this auto-correlation function image is as shown in Figure 3.
2, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
That is: the training sequence A=(a that to establish two length be P 0, a 1, a 2..., a P-1) and training sequence B=(b 0, b 1, b 2..., b P-1), its cross-correlation function is defined as:
CC A , B ( τ ) = Σ j = 0 p - 1 a j · b ( j + τ ) mod p *
Wherein, τ is the figure place of training sequence B cyclic shift, and j is j position among training sequence A and the B, and this cross-correlation function image is as shown in Figure 4.
When obtaining a plurality of training sequence that meets the sequence standard; Can choose the training sequence that length is M, the element that circulation is moved in this training sequence obtains N training sequence N time, and the element in this training sequence is that permanent mould and auto-correlation are zero element; Wherein, The N value be M except 1 with the aliquot multiple of M itself, the figure place that moves first is 0, each afterwards mobile figure place is M/N; N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row; Obtain the apposition of mutually orthogonal M/N capable vector and above-mentioned matrix respectively, the length of each row vector is N; According to from top to bottom, from left to right order, obtain all elements of each apposition successively and form the training sequence that meets the sequence standard.When obtaining a plurality of training sequence that meets the sequence standard, can also check training sequence whether to satisfy the requirement of sequence standard successively through exhaustive method, and then get access to a plurality of training sequences that meet the sequence standard.Certainly, can also use other related algorithms to get access to meet a plurality of training sequences of above-mentioned sequence standard.
Above-mentioned apposition is meant: establishing length and be the vectorial B of row of L and the apposition B ⊙ M of the matrix M that line number is L is:
Figure BDA0000029162820000061
Wherein, first element of the vectorial B of B [1] expression row, second element of the vectorial B of B [2] expression row, L the element of the vectorial B of B [L] expression row, M (1, X 1) all elements in representing matrix M first row, and M (1, X 2) all elements in representing matrix M second row, and M (1, X L) all elements during representing matrix M L is capable; Therefore B ⊙ M is such matrix: first row element that its first capable first element by the vectorial B of row multiply by matrix M successively obtains element and constitutes; Second row element that second capable second element by the vectorial B of row multiply by matrix M successively obtains element and constitutes; And the like, the L row element that L the element of L behavior row vector B multiply by matrix M successively obtains the element formation.
Step 102, with each training sequence that meets sequence standard repeated arrangement respectively, form one road training frames separately; Concrete, as repetitive, this repetitive of repeated arrangement is formed one road training frames, and is promptly as shown in Figure 2 with a training sequence that meets the sequence standard, and as repetitive, repeated arrangement obtains one road training frames K time with S (j).
Step 103, each road training frames is modulated to single-carrier signal respectively, the channeling single-carrier signal.Concrete, each training sequence in the said training frames in every road is modulated to the single carrier symbol respectively, this single carrier symbol is formed one tunnel single-carrier signal, after the multichannel training frames all is modulated to single-carrier signal, the channeling single-carrier signal.
Pass through foregoing description; Can find out that the method for the process multi-channel single-carrier signal that the use embodiment of the invention provides is through obtaining a plurality of training sequence difference composing training frames that meet the sequence standard; And be modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.Because a plurality of training frames that obtain, its auto-correlation function value in about the window of zero time delay are zero, and the cross-correlation function of any two training sequences value in about the window of zero time delay also is zero; Thus; The training frames that uses this training sequence to form can be applied to synchronous and balanced simultaneously, and multichannel can guarantee that under low signal-to-noise ratio each road signal is independent not to interfere with each other synchronously when synchronous; Multichannel guarantees that each road correlation between signals is minimum when balanced; Even in multiple signals life period deviation,, just can guarantee that correlation is still minimum as long as the time domain side-play amount is no more than some symbols.
The method of the process multi-channel single-carrier signal that the embodiment of the invention is provided through specific embodiment below is elaborated; Suppose to use in the present embodiment QPSK (Quadrature Phase Shift Keying; QPSK) modulation system; The planisphere of this modulation system is as shown in Figure 5; Comprise 4 complex points: has the two-way transmission signals, is respectively 1 the road and 2 the tunnel, when using the method that the embodiment of the invention provides; As shown in Figure 6, may further comprise the steps:
Step 601, choose four phase CAZAC (Const Amplitude ZeroAuto-Corelation, permanent envelope autocorrelation sequence) the sequence R of length M=16, wherein R=(1 ,-1,1 ,-1,1, j ,-1 ,-j, 1,1,1,1,1 ,-j ,-1, j).Concrete, because the planisphere of modulation system has four complex points, therefore in the CAZAC sequence, select one four phase CAZAC sequence, and the element in the CAZAC sequence is permanent mould and auto-correlation is zero element.
Step 602, the element in training sequence R circulation is moved 8 times, obtain 8 training sequences;
N=8 is moved in training sequence R circulation, is specially: with 0 of the element ring shift left in the training sequence R obtain R (0)=(1 ,-1,1 ,-1,1, j ,-1 ,-j, 1,1,1,1,1 ,-j;-1, j), with 2 of the element ring shift lefts in the training sequence R obtain R (2)=(1 ,-1,1, j ,-1 ,-j, 1,1,1,1,1 ,-j ,-1; J, 1 ,-1), with 4 of the element ring shift lefts in the training sequence R obtain R (4)=(1, j ,-1 ,-j, 1,1,1,1,1 ,-j ,-1, j; 1 ,-1,1 ,-1), with 6 of the element ring shift lefts in the training sequence R obtain R (6)=(1 ,-j, 1,1,1,1,1 ,-j ,-1, j, 1;-1,1 ,-1,1, j), with 8 of the element ring shift lefts in the training sequence R obtain R (8)=(1,1,1,1,1 ,-j ,-1, j, 1 ,-1; 1 ,-1,1, j ,-1 ,-j), with 10 of the element ring shift lefts in the training sequence R obtain R (10)=(1,1,1 ,-j ,-1, j, 1 ,-1,1;-1,1, j ,-1 ,-j, 1,1), with 12 of the element ring shift lefts in the training sequence R obtain R (12)=(1 ,-j ,-1, j, 1 ,-1,1;-1,1, j ,-1 ,-j, 1,1,1,1), with 14 of the element ring shift lefts in the training sequence R obtain R (14)=(1, j, 1 ,-1,1;-1,1, j ,-1 ,-j, 1,1,1,1,1 ,-j), wherein, the figure place that training sequence R moves first is 0, each afterwards figure place that moves is the 16/8=2 position.
The number of times that above-mentioned circulation is moved is relevant with the length of training sequence R; Its value for the length M of training sequence R except 1 with the factor of M itself, that is to say that the length of training sequence R is 16; Its factor is 1,2,4,8,16, and the factor that can be used as the mobile number of times of circulation is 2,4,8.When the mobile number of times of circulation was 2, the figure place that moves first was 0, moved the 16/2=8 position afterwards at every turn, and obtaining 2 training sequences is R (0), R (8); When the mobile number of times of circulation was 4, the figure place that moves first was 0, moved the 16/4=4 position afterwards at every turn, and obtaining 4 training sequences individual is R (0), R (4), R (8), R (12); When the mobile number of times of circulation was 8, the figure place that moves first was 0, moved the 16/8=2 position afterwards at every turn, and obtaining 8 training sequences is R (0), R (2), R (4), R (6), R (8), R (10), R (12), R (14).
Step 603, training sequence R (0) is capable as first in the matrix, the training sequence after other move lay respectively at other row successively, constitute matrix G; Concrete, as first row, R (2) is as second row with R (0), and R (4) is as the third line, and the like, R (14) has constituted the matrix G of 8 row, 16 row as the 8th row.
Step 604, choose mutually orthogonal capable vector and above-mentioned matrix G and calculate apposition; Concrete, the number of the row vector that this is mutually orthogonal is 16/8=2, and the length of each row vector is the line number 8 of above-mentioned matrix.If these two mutually orthogonal row vectors be W1=(1, j ,-1 ,-1 ,-j; 1 ,-j, j), W2=(j, 1;-j ,-1, j, 1, j; 1), calculate apposition W1 ⊙ G and the W2 ⊙ G of itself and matrix G respectively, W1 ⊙ G representes first element among the W1 is multiplied each other with the element of first row of G successively, and the element that obtains successively is as first row of W1 ⊙ G, and the like; W2 ⊙ G representes first element among the W2 is multiplied each other with the element that first of G goes successively, and the element that obtains is successively gone as first of W2 ⊙ G, and the like.
Step 605, obtain each element among the apposition matrix W 1 ⊙ G successively, form training sequence S1; Concrete, according to from top to bottom, from left to right order obtain successively each element among the apposition matrix W 1 ⊙ G form training sequence S1=(1, j ,-1,1 ,-j, 1 ,-j ,-j ,-1 ,-j ,-j, j ,-j, 1 ,-1 ,-1,1, j, 1 ,-1 ,-j; 1, j, j ,-1 ,-1, j ,-1 ,-j ,-j, 1 ,-j, 1 ,-j ,-1 ,-1 ,-j ,-1 ,-j, j, j, 1 ,-1;-1 ,-1, j, j ,-j ,-1, j ,-1 ,-1, j, 1 ,-j, j ,-j, j ,-1, j, 1 ,-1, j ,-1,1; J ,-1,1 ,-j, 1 ,-j ,-j, 1, j, j ,-j, j ,-1,1,1,1, j, 1 ,-1 ,-j, 1, j; J, 1,1 ,-j, 1, j, j ,-1, j, 1 ,-j ,-1 ,-1 ,-j ,-1 ,-j, j ,-j ,-1,1,1,1;-j ,-j, j ,-1, j ,-1 ,-1, j, 1 ,-j, j, j ,-j, 1 ,-j ,-1,1 ,-j, 1), because W1 ⊙ G matrix has 8 row, 16 row, so training sequence S1 comprises 128 elements.
Step 606, obtain each element among the apposition matrix W 2 ⊙ G successively, form training sequence S2; Concrete, according to from top to bottom, each element of obtaining successively among the apposition matrix W 2 ⊙ G of from left to right order forms training sequence S2=(j, 1 ,-j, 1, j, 1, j ,-1 ,-j ,-1,1, j, j, 1,1, j, j, 1, j ,-1, j; 1 ,-j, 1 ,-j, j ,-1 ,-1, j ,-j ,-1 ,-1, j ,-1 ,-j ,-1, j ,-1, j, 1 ,-1 ,-j ,-j;-1,1, j ,-j ,-1 ,-j, 1 ,-j ,-1 ,-j, 1, j, 1,1,1 ,-j, j ,-1 ,-1 ,-j, j, j; 1 ,-j, 1, j, 1, j ,-1, j, 1 ,-1 ,-j ,-j ,-1 ,-1 ,-j, j, 1, j ,-1, j, 1 ,-j; 1, j ,-j, 1,1 ,-j, j, 1,1, j ,-1 ,-j ,-1, j ,-1, j, 1,1, j, j, 1 ,-1;-j, j, 1 ,-j, 1 ,-j ,-1 ,-j, 1, j, 1 ,-1 ,-1, j ,-j, 1,1, j ,-j), because W2 ⊙ G matrix has 8 row, 16 row, so training sequence S2 comprises 128 elements.
Construct training sequence S1 and the S2 that meets the sequence standard through above-mentioned steps, these two training sequence autocorrelation value are 0 in the window about zero time delay symmetry, cross correlation value is 0 in the window about the zero time delay symmetry.Above-mentioned steps 605 does not have sequencing with step 606 when carrying out.
Step 607, training sequence S1 repeated arrangement is formed one road training frames, training sequence S2 repeated arrangement is formed another road training frames; Concrete, can be with training sequence S1 repeated arrangement 20 times, form one tunnel length and be 2560 1 road training frames, with training sequence S2 repeated arrangement 20 times, form one tunnel length and be 2560 2 road training frames.
Step 608, above-mentioned two-way training frames is modulated to single-carrier signal respectively, the channeling single-carrier signal.Since the planisphere of QPSK modulation system comprises 4 complex points:
Figure BDA0000029162820000091
therefore the element in this two-way training frames is all being repeated rotation π i/4 on the plane; Be that element in the training frames all multiply by exp (j* π i/4); Obtain the two-way single-carrier signal thus; This two-way single-carrier signal multichannel can guarantee under low signal-to-noise ratio when synchronous; Each road signal is independent not to interfere with each other synchronously, and multichannel guarantees that each road correlation between signals is minimum when balanced, even in multiple signals life period deviation; As long as the time domain side-play amount is no more than some symbols, just can guarantee that correlation is still minimum.
The above-mentioned steps situation only is the example of takeing for the method that the explanation embodiment of the invention provides, and other examples that can reach effect same repeat no more at this.
Pass through foregoing description; Can find out that the method for the process multi-channel single-carrier signal that the use embodiment of the invention provides is through obtaining a plurality of training sequence difference composing training frames that meet the sequence standard; And be modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.Because a plurality of training frames that obtain, its auto-correlation function value in about the window of zero time delay are zero, and the cross-correlation function of any two training sequences value in about the window of zero time delay also is zero; Thus; The training frames that uses this training sequence to form can be applied to synchronous and balanced simultaneously, and multichannel can guarantee that under low signal-to-noise ratio each road signal is independent not to interfere with each other synchronously when synchronous; Multichannel guarantees that each road correlation between signals is minimum when balanced; Even in multiple signals life period deviation,, just can guarantee that correlation is still minimum as long as the time domain side-play amount is no more than some symbols.
Accordingly, the embodiment of the invention also provides a kind of device of process multi-channel single-carrier signal, and is as shown in Figure 7, comprising:
Acquiring unit 701; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
Arrangement units 702 is used for each said training sequence difference repeated arrangement that meets the sequence standard is formed one road training frames separately;
Modulating unit 703 is used for the said training frames in each road being modulated to single-carrier signal respectively, the channeling single-carrier signal.
Preferable; Above-mentioned acquiring unit 701 is used to choose the training sequence that length is M, and the element that circulation is moved in the said training sequence obtains N training sequence N time; Element in the said training sequence is that permanent mould and auto-correlation are zero element; Said N value be M except 1 with the aliquot multiple of M itself, the figure place that moves first is 0, each afterwards mobile figure place is M/N; Said N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row successively; Obtain the apposition of mutually orthogonal M/N capable vector and said matrix respectively, the length of each said row vector is N; According to from top to bottom, from left to right order, obtain all elements of each said apposition successively and form the training sequence that meets the sequence standard.
Preferable, above-mentioned arrangement units 702 is used for each said training sequence that meets the sequence standard as repetitive, and the said repetitive of repeated arrangement is formed one road training frames separately respectively.
Preferable, above-mentioned modulating unit 703 is used for each training sequence of each said training frames in road is modulated to the single carrier symbol respectively, and said single carrier symbol is formed one tunnel single-carrier signal; After the said training frames of multichannel is modulated to single-carrier signal, the channeling single-carrier signal.
Pass through foregoing description; Can find out that the device of the process multi-channel single carrier symbol that the use embodiment of the invention provides is through obtaining a plurality of training sequence difference composing training frames that meet the sequence standard; And be modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.Because a plurality of training frames that obtain, its auto-correlation function value in about the window of zero time delay are zero, and the cross-correlation function of any two training sequences value in about the window of zero time delay also is zero; Thus; The training frames that uses this training sequence to form can be applied to synchronous and balanced simultaneously, and multichannel can guarantee that under low signal-to-noise ratio each road signal is independent not to interfere with each other synchronously when synchronous; Multichannel guarantees that each road correlation between signals is minimum when balanced; Even in multiple signals life period deviation,, just can guarantee that correlation is still minimum as long as the time domain side-play amount is no more than some symbols.
Accordingly, the embodiment of the invention also provides a kind of system of process multi-channel single-carrier signal, and is as shown in Figure 8, comprising:
Transmitting terminal 801; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry; With each said training sequence that meets the sequence standard respectively repeated arrangement form one road training frames separately; The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal;
Receiving terminal 802 is used to receive said MF Multi-Channel Per Carrier signal.
Preferable; Transmitting terminal 801 also is used to choose the training sequence that length is M, and the element that circulation is moved in the said training sequence obtains N training sequence N time; Element in the said training sequence is that permanent mould and auto-correlation are zero element; Said N value be M except 1 with the aliquot multiple of M itself, the figure place that moves first is 0, each afterwards mobile figure place is M/N; Said N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row successively; Obtain the apposition of mutually orthogonal M/N capable vector and said matrix respectively, the length of each said row vector is N; According to from top to bottom, from left to right order, obtain all elements of each said apposition successively and form the training sequence that meets the sequence standard.
Pass through foregoing description; Can find out that method, the Apparatus and system of the process multi-channel single-carrier signal that the use embodiment of the invention provides are through obtaining a plurality of training sequence difference composing training frames that meet the sequence standard; And be modulated to single-carrier signal respectively, thereby form the MF Multi-Channel Per Carrier signal.Because a plurality of training frames that obtain, its auto-correlation function value in about the window of zero time delay are zero, and the cross-correlation function of any two training sequences value in about the window of zero time delay also is zero; Thus; The training frames that uses this training sequence to form can be applied to synchronous and balanced simultaneously, and multichannel can guarantee that under low signal-to-noise ratio each road signal is independent not to interfere with each other synchronously when synchronous; Multichannel guarantees that each road correlation between signals is minimum when balanced; Even in multiple signals life period deviation,, just can guarantee that correlation is still minimum as long as the time domain side-play amount is no more than some symbols.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. the method for a process multi-channel single-carrier signal is characterized in that, comprising:
Obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
With each said training sequence difference repeated arrangement that meets the sequence standard, form one road training frames separately;
The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal.
2. the method for claim 1 is characterized in that, the said a plurality of training sequences that meet the sequence standard that obtain comprise:
Choose the training sequence that length is M; The element that circulation is moved in the said training sequence obtains N training sequence N time; Element in the said training sequence is that permanent mould and auto-correlation are zero element; Said N value be M except 1 with the aliquot multiple of M itself, the figure place that moves first is 0, each afterwards mobile figure place is M/N;
Said N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row successively;
Obtain the apposition of mutually orthogonal M/N capable vector and said matrix respectively, the length of each said row vector is N;
According to from top to bottom, from left to right order, obtain all elements of each said apposition successively and form the training sequence that meets the sequence standard.
3. the method for claim 1 is characterized in that, said each said training sequence that meets sequence standard repeated arrangement is respectively formed one road training frames separately, comprising:
As repetitive, the said repetitive of repeated arrangement is formed one road training frames separately respectively with each said training sequence that meets the sequence standard.
4. the method for claim 1 is characterized in that, said the said training frames in each road is modulated to single-carrier signal respectively, and the channeling single-carrier signal comprises:
Each training sequence in the said training frames in each road is modulated to the single carrier symbol respectively, and said single carrier symbol is formed one tunnel single-carrier signal;
After the said training frames of multichannel is modulated to single-carrier signal, the channeling single-carrier signal.
5. the device of a process multi-channel single carrier symbol is characterized in that, comprising:
Acquiring unit; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry;
Arrangement units is used for each said training sequence difference repeated arrangement that meets the sequence standard is formed one road training frames separately;
Modulating unit is used for the said training frames in each road being modulated to single-carrier signal respectively, the channeling single-carrier signal.
6. device as claimed in claim 5 is characterized in that, said acquiring unit; Be used to choose the training sequence that length is M; The element that circulation is moved in the said training sequence obtains N training sequence N time, and the element in the said training sequence is that permanent mould and auto-correlation are zero element, said N value be M except 1 and the aliquot multiple of M itself; The figure place that moves first is 0, and each afterwards figure place that moves is M/N; Said N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row successively; Obtain the apposition of mutually orthogonal M/N capable vector and said matrix respectively, the length of each said row vector is N; According to from top to bottom, from left to right order, obtain all elements of each said apposition successively and form the training sequence that meets the sequence standard.
7. device as claimed in claim 5 is characterized in that, said arrangement units is used for each said training sequence that meets the sequence standard as repetitive, and the said repetitive of repeated arrangement is formed one road training frames separately respectively.
8. device as claimed in claim 5 is characterized in that, said modulating unit is used for each training sequence of each said training frames in road is modulated to the single carrier symbol respectively, and said single carrier symbol is formed one tunnel single-carrier signal; After the said training frames of multichannel is modulated to single-carrier signal, the channeling single-carrier signal.
9. the system of a process multi-channel single-carrier signal is characterized in that, comprising:
Transmitting terminal; Be used to obtain a plurality of training sequences that meet the sequence standard, said sequence standard comprises: the autocorrelation value of said training sequence is 0 in the window about zero time delay symmetry, the cross correlation value of any two training sequences is 0 in the window about the zero time delay symmetry; With each said training sequence that meets the sequence standard respectively repeated arrangement form one road training frames separately; The said training frames in each road is modulated to single-carrier signal respectively, the channeling single-carrier signal;
Receiving terminal is used to receive said MF Multi-Channel Per Carrier signal.
10. system as claimed in claim 9 is characterized in that, said transmitting terminal; Also be used to choose the training sequence that length is M; The element that circulation is moved in the said training sequence obtains N training sequence N time, and the element in the said training sequence is that permanent mould and auto-correlation are zero element, said N value be M except 1 and the aliquot multiple of M itself; The figure place that moves first is 0, and each afterwards figure place that moves is M/N; Said N training sequence constituted matrix, and the original training sequence that does not wherein move figure place is arranged in first row of matrix, and the training sequence after other move lays respectively at other row successively; Obtain the apposition of mutually orthogonal M/N capable vector and said matrix respectively, the length of each said row vector is N; According to from top to bottom, from left to right order, obtain all elements of each said apposition successively and form the training sequence that meets the sequence standard.
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