CN102457454B - Method, device and system for processing multiple paths of single-carrier signals - Google Patents

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, Apparatus and system processing multiple paths of single-carrier signals

Technical field

The present invention relates to technical field of communication, particularly relate to a kind of method, the Apparatus and system that process multiple paths of single-carrier signals.

Background technology

Current, in wireless communication system and wired communication system, single-carrier signal linear modulation emission system due to its maturity, simplicity and the high-rate characteristics in some channels, in occupation of the important share of communication system market, and adopt by different communication standard protocols.Many continuously or in Packet data service, also all have employed this single-carrier symbol linear modulation emission system, such as landline Digital Television, satellite digital TV, 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 wired communication system, when launching single-carrier signal, according to the difference of type of service, use different signal synchronizing methods.In many synchronous method, use the application of the method for synchronous training sequence comparatively general.The form of synchronous training sequence and Design of Signal directly affect the synchronous effect of signal, and preferably synchronous training symbol sequence, signal receiving end can be helped to complete synchronous task smoothly, or the Fast Coarse that can complete most of signal parameter is caught.

On the other hand, Current wireless communication system and wired communication system, when transmitting, due to the impact of interchannel, may cause producing ISI(IntersymbolInterference, intersymbol interference between the time-domain symbol of the single-carrier signal of launching).In order to overcome this intersymbol interference, the equalizer of time domain or frequency domain is used to carry out equilibrium to single-carrier signal, such as at DVB-C(Digital Video Broadcasting-Cable, digital multimedia cable is broadcasted) in system receiver use time domain DFE(Decision FeedbackEqualization, DFF).When equalizer is started working, need to restrain the parameter of filter, usually the algorithm depending on known training sequence is used during convergence, because it can make full use of the information of known training sequence, thus restrain fast and efficiently, rapid adaptive channel, and under lower signal to noise ratio condition, also there is better performance.Before receive-transmit system starts formally to send data, first send the synchronous training frames of known symbol composition, make receiving terminal make full use of relevant information Fast Convergent under noisy channels of training frames.

Again on the one hand, some communication system (as Single Carrier Radio Transmission system) often uses multiplex techniques, such as utilizes different polarised directions to carry out multiplexing or utilizes different antennas to carry out multiplexing etc. in space.But, mutually can disturb between the signal between not going the same way, utilize equalizer to carry out in interference cancellation process to this multiple signals, need the correlation between the training sequence of multiple signals less.Meanwhile, also require that the correlation between synchronous training frames is less when carrying out Multi-path synchronous.

In sum, training frames should go for synchronously, single channel is balanced, with the application aspect such as multiplexing is balanced, this requires training frames to have to meet synchronous to require simultaneously, single channel is balanced and the characteristic of multichannel equalization request, but synchronous training frames of the prior art is only applicable to above-mentioned certain applications aspect.

Summary of the invention

The embodiment of the present invention provides a kind of method, the Apparatus and system that process multiple paths of single-carrier signals, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and is modulated to single-carrier signal respectively, thus forms multiple paths of single-carrier signals.

Embodiments provide a kind of method processing multiple paths of single-carrier signals, the method comprises:

Obtain the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry;

The training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately will be met described in each;

Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal;

The described training sequence repeated arrangement respectively that will meet sequence criteria described in each, forms a road training frames separately, comprising:

The training sequence of sequence criteria will be met as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames described in each.

Accordingly, embodiments provide a kind of device processing multiple paths of single-carrier signals, comprising:

Acquiring unit, for obtaining the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry;

Arrangement units, for meeting the training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately described in each; Modulating unit, for being modulated to single-carrier signal respectively by training frames described in each road, channeling single-carrier signal;

Wherein said arrangement units specifically for: the training sequence of sequence criteria will be met described in each as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames.

Accordingly, embodiments provide a kind of system processing multiple paths of single-carrier signals, comprising:

Transmitting terminal, for obtaining the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry; The training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately will be met described in each; Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal;

Receiving terminal, for receiving described multiple paths of single-carrier signals;

Wherein said transmitting terminal specifically for: the training sequence of sequence criteria will be met described in each as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames.

Embodiments provide a kind of method, the Apparatus and system that process multiple paths of single-carrier signals, for obtaining the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry; The training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately will be met described in each; Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal.Method, the Apparatus and system of the process multiple paths of single-carrier signals using the embodiment of the present invention to provide, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and be modulated to single-carrier signal respectively, thus form multiple paths of single-carrier signals.Due to the multiple training frames obtained, its auto-correlation function is being zero about value in the window of zero time delay, and the cross-correlation function of any two training sequences is being also zero about being worth in the window of zero time delay, thus, the training frames using this training sequence to form can be applied to synchronous and balanced simultaneously, and can ensure during Multi-path synchronous under low signal-to-noise ratio, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Accompanying drawing explanation

Fig. 1 is the method flow schematic diagram processing multiple paths of single-carrier signals in the embodiment of the present invention;

Fig. 2 is training frames structural representation in the embodiment of the present invention;

Fig. 3 is auto-correlation function image schematic diagram in the embodiment of the present invention;

Fig. 4 is embodiment of the present invention acceptance of the bid cross-correlation function image schematic diagram;

Fig. 5 is QPSK modulation system planisphere in another embodiment of the present invention;

Fig. 6 is the method flow schematic diagram processing multiple paths of single-carrier signals in another embodiment of the present invention;

Fig. 7 is the apparatus structure schematic diagram processing multiple paths of single-carrier signals in the embodiment of the present invention;

Fig. 8 is the system configuration schematic diagram processing multiple paths of single-carrier signals in the embodiment of the present invention.

Embodiment

Below in conjunction with each accompanying drawing, the main of embodiment of the present invention technical scheme is realized principle, embodiment and set forth in detail the beneficial effect that should be able to reach.

In order to solve prior art Problems existing, the embodiment of the present invention provides a kind of method processing multiple paths of single-carrier signals, make the training frames being modulated to single-carrier signal can serve Multi-path synchronous and multichannel equilibrium simultaneously, mutual interference can not be produced during Multi-path synchronous, correlation between the balanced Shi Ge road of multichannel is low, as shown in Figure 1, the method comprises the following steps:

Step 101, acquisition meet multiple training sequences of sequence criteria, and this sequence criteria comprises: the autocorrelation value of 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 zero time delay symmetry;

Concrete, as shown in Figure 2, multiple training sequence forms a road training frames, a road single-carrier signal is formed after every road training frames enters ovennodulation, suppose that there is Z road training frames, be designated as F(1 respectively), F(2), F(3) ..., F(Z), the training sequence repeated arrangement that each road training frames is P by a segment length forms for K time, length in the training frames of jth 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 meet the requirement of one sequence standard:

1, the autocorrelation value of training sequence is 0 in the window about zero time delay symmetry;

That is: set a length as the training sequence A=(a of P ₀, a ₁, a ₂..., a _p-1), its auto-correlation function is defined as:

$\mathrm{AC}\left(\mathrm{\τ}\right)=\underset{j=0}{\overset{p-1}{\mathrm{\Σ}}}{a}_j\•{a^{*}}_{(j+\mathrm{\τ})\mathrm{mod}p}$

Wherein, τ is the figure place of training sequence A cyclic shift, and j is the j bit element in training sequence A, and this auto-correlation function image as shown in Figure 3.

2, the cross correlation value of any two training sequences is 0 in the window about zero time delay symmetry;

That is: set two length as the training sequence A=(a of 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:

$C{C}_{A,B}\left(\mathrm{\τ}\right)=\underset{j=0}{\overset{p-1}{\mathrm{\Σ}}}{a}_j\•{b^{*}}_{(j+\mathrm{\τ})\mathrm{mod}p}$

Wherein, τ is the figure place of training sequence B cyclic shift, and j is jth position in training sequence A and B, and this cross-correlation function image as shown in Figure 4.

When acquisition meets multiple training sequence of sequence criteria, the training sequence that length is M can be chosen, element in this training sequence of loopy moving obtains N number of training sequence N time, element in this training sequence is permanent mould and auto-correlation is the element of zero, wherein, N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N; N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row; Obtain the apposition of a mutually orthogonal M/N row vector and above-mentioned matrix respectively, the length of each row vector is N; According to order from top to bottom, from left to right, all elements composition obtaining each apposition successively meets the training sequence of sequence criteria.When acquisition meets multiple training sequence of sequence criteria, by exhaustive method, training sequence can also be checked successively whether to meet the requirement of sequence criteria, and then gets the multiple training sequences meeting sequence criteria.Certainly, other related algorithms can also be used to get meet multiple training sequences of above-mentioned sequence criteria.

Above-mentioned apposition refers to: set length as the apposition B ⊙ M that a row vector B and line number of L is the matrix M of L to be: wherein, B [1] represents first element of row vector B, and B [2] represents second element of row vector B, and B [L] represents L the element of row vector B, M(1, X ₁) all elements in representing matrix M the first row, M(1, X ₂) all elements in representing matrix M second row, M(1, X _l) all elements during representing matrix M L is capable, therefore B ⊙ M is such matrix: the first row element acquisition element that its first row is multiplied by matrix M successively by first element of row vector B is formed, the second row element acquisition element that second row is multiplied by matrix M successively by second element of row vector B is formed, the like, L the element of L behavior row vector B is multiplied by the L row element acquisition element formation of matrix M successively.

Step 102, each is met the training sequence respectively repeated arrangement of sequence criteria, composition one road training frames separately; Concrete, using a training sequence meeting sequence criteria as repetitive, this repetitive of repeated arrangement forms a road training frames, namely as shown in Figure 2, using S(j) as repetitive, repeated arrangement obtains a road training frames K time.

Step 103, each road training frames is modulated to single-carrier signal respectively, channeling single-carrier signal.Concrete, each training sequence in training frames described in every road is modulated to single-carrier symbol respectively, and this single-carrier symbol forms a road single-carrier signal, after multichannel training frames is all modulated to single-carrier signal, and channeling single-carrier signal.

Pass through foregoing description, can find out, the method for the process multiple paths of single-carrier signals using the embodiment of the present invention to provide, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and be modulated to single-carrier signal respectively, thus form multiple paths of single-carrier signals.Due to the multiple training frames obtained, its auto-correlation function is being zero about value in the window of zero time delay, and the cross-correlation function of any two training sequences is being also zero about being worth in the window of zero time delay, thus, the training frames using this training sequence to form can be applied to synchronous and balanced simultaneously, and can ensure during Multi-path synchronous under low signal-to-noise ratio, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Be described in detail below by the method for specific embodiment to the process multiple paths of single-carrier signals that the embodiment of the present invention provides, suppose in the present embodiment, to use QPSK(Quadrature Phase Shift Keying, Quadrature Phase Shift Keying) modulation system, the planisphere of this modulation system as shown in Figure 5, comprises 4 complex points: $(\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i)$ , there is two-way signal transmission, be respectively 1 road and 2 tunnels, during the method using the embodiment of the present invention to provide, as shown in Figure 6, comprise the following steps:

Step 601, choose the four phase CAZAC(Const Amplitude ZeroAuto-Corelation of length M=16, permanent envelope autocorrelation sequence) sequence R, wherein R=(1 ,-1,1 ,-1,1, j ,-1 ,-j, 1,1,1,1,1 ,-j ,-1, j).Concrete, the planisphere due to modulation system has four complex points, therefore in CAZAC sequence, selects four phase CAZAC sequences, and the element in CAZAC sequence is permanent mould and auto-correlation is the element of zero.

Step 602, the element circular in training sequence R is moved 8 times, obtain 8 training sequences;

By training sequence R loopy moving N=8, be specially: the element circular in training sequence R is moved to left 0 and obtain R(0)=(1,-1, 1,-1, 1, j,-1,-j, 1, 1, 1, 1, 1,-j,-1, j), element circular in training sequence R is moved to left 2 and obtains R(2)=(1,-1, 1, j,-1,-j, 1, 1, 1, 1, 1,-j,-1, j, 1,-1), element circular in training sequence R is moved to left 4 and obtains R(4)=(1, j,-1,-j, 1, 1, 1, 1, 1,-j,-1, j, 1,-1, 1,-1), element circular in training sequence R is moved to left 6 and obtains R(6)=(-1,-j, 1, 1, 1, 1, 1,-j,-1, j, 1,-1, 1,-1, 1, j), element circular in training sequence R is moved to left 8 and obtains R(8)=(1, 1, 1, 1, 1,-j,-1, j, 1,-1, 1,-1, 1, j,-1,-j), element circular in training sequence R is moved to left 10 and obtains R(10)=(1, 1, 1,-j,-1, j, 1,-1, 1,-1, 1, j,-1,-j, 1, 1), element circular in training sequence R is moved to left 12 and obtains R(12)=(1,-j,-1, j, 1,-1, 1,-1, 1, j,-1,-j, 1, 1, 1, 1), element circular in training sequence R is moved to left 14 and obtains R(14)=(-1, j, 1,-1, 1,-1, 1, j,-1,-j, 1, 1, 1, 1, 1,-j), wherein, the figure place of training sequence R movement is first 0, the figure place of each movement is 16/8=2 position afterwards.

The number of times of above-mentioned loopy moving is relevant with the length of training sequence R, its value be the length M of training sequence R except 1 and the factor of M itself, that is, the length of training sequence R is 16, its factor is 1,2,4,8,16, can be 2,4,8 as the factor of the number of times of loopy moving.When the number of times of loopy moving is 2, the figure place of movement is first 0, and each mobile 16/2=8 position, obtains 2 training sequences and R(0 afterwards), R(8); When the number of times of loopy moving is 4, the figure place of movement is first 0, afterwards each mobile 16/4=4 position, obtains 4 training sequences i.e. R(0), R(4), R(8), R(12); When the number of times of loopy moving is 8, the figure place of movement is first 0, and each mobile 16/8=2 position, obtains 8 training sequences and R(0 afterwards), R(2), R(4), R(6), R(8), R(10), R(12), R(14).

Step 603, using training sequence R (0) as the first row in matrix, other move after training sequence lay respectively at other row successively, form matrix G; Concrete, using R(0) as the first row, R(2) as the second row, R(4) as the third line, the like, R(14) as the 8th row, constitute the matrix G that 8 row 16 arrange.

Step 604, choose mutually orthogonal row vector and above-mentioned matrix G calculates apposition; Concrete, the number of this mutually orthogonal row vector 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 are W1=(1, j ,-1 ,-1,-j, 1 ,-j, j), W2=(j, 1 ,-j,-1, j, 1, j, 1) apposition W1 ⊙ G and the W2 ⊙ G of itself and matrix G, is calculated respectively, W1 ⊙ G represent by the element of first in W1 successively with the element multiplication of the first row of G, the element obtained successively as the first row of W1 ⊙ G, the like; W2 ⊙ G represent by the element of first in W2 successively with the element multiplication of the first row of G, the element obtained successively as the first row of W2 ⊙ G, the like.

Each element in step 605, successively acquisition outer product matrices W1 ⊙ G, composition training sequence S1, concrete, according to from top to bottom, order from left to right obtains each element composition training sequence S1=(1 in outer product matrices W1 ⊙ G successively, 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), arrange because W1 ⊙ G matrix has 8 row 16, therefore training sequence S1 comprises 128 elements.

Each element in step 606, successively acquisition outer product matrices W2 ⊙ G, composition training sequence S2, concrete, according to from top to bottom, order from left to right obtains each element composition training sequence S2=(j in outer product matrices W2 ⊙ G successively, 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), arrange because W2 ⊙ G matrix has 8 row 16, therefore training sequence S2 comprises 128 elements.

Constructed training sequence S1 and S2 meeting sequence criteria by 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 zero time delay symmetry.Above-mentioned steps 605 and step 606 do not have sequencing when performing.

Step 607, training sequence S1 repeated arrangement is formed a road training frames, training sequence S2 repeated arrangement forms another road training frames; Concrete, by training sequence S1 repeated arrangement 20 times, the 1 road training frames that a road length is 2560 can be formed, by training sequence S2 repeated arrangement 20 times, form the 2 road training frames that a road length is 2560.

Step 608, above-mentioned two-way training frames is modulated to single-carrier signal respectively, channeling single-carrier signal.Planisphere due to QPSK modulation system comprises 4 complex points: $(\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}+\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i-\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i)$ Therefore the element in this two-way training frames is all rotated π i/4 in repetition plane, namely the element in training frames is all multiplied by exp(j* π i/4), obtain two-way single-carrier signal thus, can ensure under low signal-to-noise ratio during this two-way single-carrier signal Multi-path synchronous, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Above-mentioned steps situation be only for illustrate the method that provides of the embodiment of the present invention for example, other examples that can reach effect same do not repeat them here.

Pass through foregoing description, can find out, the method for the process multiple paths of single-carrier signals using the embodiment of the present invention to provide, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and be modulated to single-carrier signal respectively, thus form multiple paths of single-carrier signals.Due to the multiple training frames obtained, its auto-correlation function is being zero about value in the window of zero time delay, and the cross-correlation function of any two training sequences is being also zero about being worth in the window of zero time delay, thus, the training frames using this training sequence to form can be applied to synchronous and balanced simultaneously, and can ensure during Multi-path synchronous under low signal-to-noise ratio, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Accordingly, the embodiment of the present invention also provides a kind of device processing multiple paths of single-carrier signals, as shown in Figure 7, comprising:

Acquiring unit 701, for obtaining the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry;

Arrangement units 702, for meeting the training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately described in each;

Modulating unit 703, for being modulated to single-carrier signal respectively by training frames described in each road, channeling single-carrier signal.

Preferably, above-mentioned acquiring unit 701, for choosing the training sequence that length is M, element in training sequence described in loopy moving obtains N number of training sequence N time, element in described training sequence is permanent mould and auto-correlation is the element of zero, described N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N; Described N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row successively; Obtain the apposition of a mutually orthogonal M/N row vector and described matrix respectively, the length of each described row vector is N; According to order from top to bottom, from left to right, all elements composition obtaining each described apposition successively meets the training sequence of sequence criteria.

Preferably, above-mentioned arrangement units 702, for the training sequence of sequence criteria will be met described in each as repetitive, repetitive described in repeated arrangement respectively, separately composition one road training frames.

Preferably, above-mentioned modulating unit 703, for each training sequence in training frames described in each road is modulated to single-carrier symbol respectively, described single-carrier symbol forms a road single-carrier signal; After described in multichannel, training frames is modulated to single-carrier signal, channeling single-carrier signal.

Pass through foregoing description, can find out, the device of the process MF Multi-Channel Per Carrier symbol using the embodiment of the present invention to provide, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and be modulated to single-carrier signal respectively, thus form multiple paths of single-carrier signals.Due to the multiple training frames obtained, its auto-correlation function is being zero about value in the window of zero time delay, and the cross-correlation function of any two training sequences is being also zero about being worth in the window of zero time delay, thus, the training frames using this training sequence to form can be applied to synchronous and balanced simultaneously, and can ensure during Multi-path synchronous under low signal-to-noise ratio, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Accordingly, the embodiment of the present invention additionally provides a kind of system processing multiple paths of single-carrier signals, as shown in Figure 8, comprising:

Transmitting terminal 801, for obtaining the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry; By the training sequence meeting sequence criteria described in each respectively repeated arrangement form a road training frames separately; Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal;

Receiving terminal 802, for receiving described multiple paths of single-carrier signals.

Preferably, transmitting terminal 801, also for choosing the training sequence that length is M, element in training sequence described in loopy moving obtains N number of training sequence N time, element in described training sequence is permanent mould and auto-correlation is the element of zero, described N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N; Described N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row successively; Obtain the apposition of a mutually orthogonal M/N row vector and described matrix respectively, the length of each described row vector is N; According to order from top to bottom, from left to right, all elements composition obtaining each described apposition successively meets the training sequence of sequence criteria.

Pass through foregoing description, can find out, method, the Apparatus and system of the process multiple paths of single-carrier signals using the embodiment of the present invention to provide, by obtaining multiple training sequence composing training frame respectively meeting sequence criteria, and be modulated to single-carrier signal respectively, thus form multiple paths of single-carrier signals.Due to the multiple training frames obtained, its auto-correlation function is being zero about value in the window of zero time delay, and the cross-correlation function of any two training sequences is being also zero about being worth in the window of zero time delay, thus, the training frames using this training sequence to form can be applied to synchronous and balanced simultaneously, and can ensure during Multi-path synchronous under low signal-to-noise ratio, each road signal independent synchronization does not interfere with each other, multichannel ensures that the correlation between the signal of each road is minimum time balanced, even if in multiple signals life period deviation, as long as time domain side-play amount is no more than some symbols, just can ensure that correlation is still minimum.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (5)

1. process a method for multiple paths of single-carrier signals, it is characterized in that, comprising:

Choose the training sequence that length is M, element in training sequence described in loopy moving obtains N number of training sequence N time, element in described training sequence is permanent mould and auto-correlation is the element of zero, described N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N;

Described N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row successively;

Obtain the apposition of a mutually orthogonal M/N row vector and described matrix respectively, the length of each described row vector is N;

According to order from top to bottom, from left to right, all elements composition obtaining each described apposition successively meets the training sequence of sequence criteria;

Obtain the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry;

The training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately will be met described in each;

Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal;

The described training sequence repeated arrangement respectively that will meet sequence criteria described in each, forms a road training frames separately, comprising:

The training sequence of sequence criteria will be met as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames described in each.

2. the method for claim 1, is characterized in that, described training frames described in each road is modulated to single-carrier signal respectively, and channeling single-carrier signal, comprising:

Each training sequence in training frames described in each road is modulated to single-carrier symbol respectively, and described single-carrier symbol forms a road single-carrier signal;

After described in multichannel, training frames is modulated to single-carrier signal, channeling single-carrier signal.

3. process a device for MF Multi-Channel Per Carrier symbol, it is characterized in that, comprising:

Acquiring unit, for choosing the training sequence that length is M, element in training sequence described in loopy moving obtains N number of training sequence N time, element in described training sequence is permanent mould and auto-correlation is the element of zero, described N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N; Described N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row successively; Obtain the apposition of a mutually orthogonal M/N row vector and described matrix respectively, the length of each described row vector is N; According to order from top to bottom, from left to right, all elements composition obtaining each described apposition successively meets the training sequence of sequence criteria; Obtain the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry;

Arrangement units, for meeting the training sequence repeated arrangement respectively of sequence criteria, composition one road training frames separately described in each;

Modulating unit, for being modulated to single-carrier signal respectively by training frames described in each road, channeling single-carrier signal;

Wherein said arrangement units specifically for: the training sequence of sequence criteria will be met described in each as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames.

4. device as claimed in claim 3, it is characterized in that, described modulating unit, for each training sequence in training frames described in each road is modulated to single-carrier symbol respectively, described single-carrier symbol forms a road single-carrier signal; After described in multichannel, training frames is modulated to single-carrier signal, channeling single-carrier signal.

5. process a system for multiple paths of single-carrier signals, it is characterized in that, comprising:

Transmitting terminal, for choosing the training sequence that length is M, element in training sequence described in loopy moving obtains N number of training sequence N time, element in described training sequence is permanent mould and auto-correlation is the element of zero, described N value be M except 1 and the aliquot multiple of M itself, the figure place of movement is first 0, and the figure place of each movement is afterwards M/N; Described N number of training sequence is formed matrix, and the original training sequence wherein not moving figure place is arranged in the first row of matrix, other move after training sequence lay respectively at other row successively; Obtain the apposition of a mutually orthogonal M/N row vector and described matrix respectively, the length of each described row vector is N; According to order from top to bottom, from left to right, all elements composition obtaining each described apposition successively meets the training sequence of sequence criteria; Obtain the multiple training sequences meeting sequence criteria, described sequence criteria comprises: the autocorrelation value of described 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 zero time delay symmetry; By the training sequence meeting sequence criteria described in each respectively repeated arrangement form a road training frames separately; Training frames described in each road is modulated to single-carrier signal respectively, channeling single-carrier signal; Receiving terminal, for receiving described multiple paths of single-carrier signals;

Wherein said transmitting terminal specifically for: the training sequence of sequence criteria will be met described in each as repetitive, respectively repetitive described in repeated arrangement, separately composition one road training frames.