CN105991178A - SFBC (Space Frequency Block Code) transmission diversity method for two-dimensional antenna array - Google Patents

Abstract

The invention provides a SFBC (Space Frequency Block Code) transmission diversity method for a two-dimensional antenna array. The antenna port numbers in a horizontal direction and a vertical direction of the two-dimensional antenna array are M and N. The method comprises steps: user data are divided into M layers, SFBC coding operation with vertical pre-coding processing added is carried out on the M layers of data, the coding operation result is mapped to all antenna ports, and the SFBC coding operation with vertical pre-coding processing added is expressed by the following equation as shown in the descriptions, wherein W is an M-port SFBC coding matrix of M<2>*2M, P is a column vector, P=[x0 x1...xN-1]<T>, the formula of xk is shown in the descriptions, q belongs to {0,1,...,Q-1}, k=0,1,...,N-1, Q is a positive integer no smaller than N, and W and P do product for Kronecker.

Description

The SFBC of two-dimensional antenna array sends deversity scheme

Technical field

The present invention relates to wireless communication field, the SFBC particularly relating to a kind of two-dimensional antenna array sends diversity Method.

Background technology

In the R8 version of long evolving system (Long-Term Evolution), there is multiple descending transmission Pattern, wherein TM2 sending mode uses a kind of SFBC (Space Frequency Block Code, null tone Block encoding) transmission deversity scheme, the operating principle block diagram of this method is as it is shown in figure 1, first by number According to being divided into M shell (M is port number), then M shell data are carried out the SFBC coding of M port, compiles Code result is mapped to M antenna port, and SFBC cataloged procedure is represented by the following formula:

$\left[\begin{array}{c}y(i,0)\\ y(i,1)\\ ...\\ y(i,M-1)\end{array}\right]=W\left[\begin{array}{c}\mathrm{Re}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Re}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Re}\left(x^{(M-1)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Im}\left(x^{(M-1)}\left(i\right)\right)\end{array}\right]$

Wherein, x^(v)I v layer data that () expression layering obtains, v=0,1 ..., M-1, For the data symbol number in every layer, it is M sized by W²The SFBC encoder matrix of × 2M, Y (i, b)=[y⁽⁰⁾(Mi+b) y⁽¹⁾(Mi+b) ... y^(M-1)(Mi+b)]^T, b=0 ..., M-1, y^(h)(Mi+b) the is represented (Mi+b) individual data of h antenna port output (i.e. corresponding to the i-th data of M shell data input, The b data of the h antenna port output), h=0,1 ..., M-1, b=0,1 ..., (i b) represents for M-1, y The column vector of (Mi+b) individual data composition of all M antenna ports, total M such row to Amount, the data symbol number of the most each antenna portIt isM times.

The R8 version of LTE only supports the transmission diversity of 2 ports and 4 ports at present, and concrete grammar is as follows.

The transmission diversity of 2 ports:

When transmitting terminal has 2 transmission antenna ports, it is expressed as antenna 0 and antenna 1.First data divide It is two layers of x (i)=[x⁽⁰⁾(i) x⁽¹⁾(i)]^T, then carry out SFBC coding, such as following formula, 0 end after SFBC coding The data vector of mouth and 1 port is [y⁽⁰⁾(l) y⁽¹⁾(l)]^T,

$\left[\begin{array}{c}{y}^{\left(0\right)}\left(2i\right)\\ y^{\left(1\right)}\left(2i\right)\\ y^{\left(0\right)}(2i+1)\\ y^{\left(1\right)}(2i+1)\end{array}\right]=\frac{1}{\sqrt{2}}\left[\begin{array}{cccc}1& 0& j& 0\\ 0& -1& 0& j\\ 0& 1& 0& j\\ 1& 0& -j& 0\end{array}\right]\left[\begin{array}{c}\mathrm{Re}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Re}\left(x^{\left(1\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(1\right)}\left(i\right)\right)\end{array}\right]$

As in figure 2 it is shown, a data sequence { S₀,S₁,S₂,S₃... }, it is divided into two layers of x⁽⁰⁾(i) and x⁽¹⁾(i), x⁽⁰⁾(i)={ S₀,S₂... }, x⁽¹⁾(i)={ S₁,S₃... }, after SFBC encodes, the transmission sequence on antenna 0 For { S₀,S₁,S₂,S₃... }, transmission sequence on antenna 1 is

The transmission diversity of 4 ports:

When transmitting terminal has 4 transmission antenna ports, it is expressed as antenna 0, antenna 1, antenna 2 and sky Line 3.Data are first split into four layers of x (i)=[x⁽⁰⁾(i) x⁽¹⁾(i) x⁽²⁾(i) x⁽³⁾(i)]^T, then carry out SFBC volume Code, such as following formula, after SFBC coding, the data vector of 0～3 ports is [y⁽⁰⁾(l) y⁽¹⁾(l) y⁽²⁾(l) y⁽³⁾(l)]^T, $l=\mathrm{0,1},...,M_{\mathrm{symb}}^{\mathrm{ap}}-1,M_{\mathrm{symb}}^{\mathrm{ap}}={4M}_{\mathrm{symb}}^{\mathrm{layer}}.$

As it is shown on figure 3, a data sequence { S₀,S₁,S₂,S₃... }, it is divided into four layers of x⁽⁰⁾(i)、x⁽¹⁾(i)、x⁽²⁾(i) and x⁽³⁾(i), x⁽⁰⁾(i)={ S₀,S₄... }, x⁽¹⁾(i)={ S₁,S₅... }, x⁽²⁾(i)={ S₂,S₆... }, x⁽³⁾(i)={ S₃,S₇... }, After SFBC encodes, the transmission sequence on antenna 0 is { S₀,S₁, 0,0 ... }, transmission on antenna 1 Sequence is { 0,0, S₂,S₃... }, transmission sequence on antenna 2 isSending out on antenna 3 The sequence is sent to be

It is 4 that current above-mentioned SFBC sends the maximum supported port number of deversity scheme, and the method is subject to It is limited to SFBC cataloged procedure, is only applicable to single user data, it is impossible to support the transmission diversity of multi-user.

In third generation partner program (3rd Generation Partnership Project is called for short 3GPP) LTE65 meeting has been directed towards full dimension MIMO technique (Full-Dimension MIMO, letter It is referred to as FD-MIMO) project verification, the descending sender of more antennas port is supported for study two-dimensional aerial array Formula.On the one hand two-dimensional antenna array can provide and more send port, supports the single user of higher order further Send diversity, to improve user performance；On the other hand can ensure that difference is used by the precoding of vertical dimensions Class between family is orthogonal, it is provided that the probability of multiuser transmission diversity, can promote downlink system handling capacity.

Summary of the invention

The present invention proposes the SFBC of a kind of two-dimensional antenna array and sends deversity scheme, described two-dimensional antenna array Antenna port number horizontally and vertically be respectively M and N, described method includes:

The data of user are divided into M shell, M shell data are added the SFBC of vertical precoding processing Encoding operation, encoding operation result is mapped to all antenna ports, the vertical precoding processing of described addition SFBC encoding operation is represented by the following formula:

$\left[\begin{array}{c}{Y}^0\left(i\right)\\ Y^1\left(i\right)\\ ......\\ Y^{N-1}\left(i\right)\end{array}\right]=(W\&CircleTimes;P)\left[\begin{array}{c}\mathrm{Re}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Re}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Re}\left(x^{(M-1)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Im}\left(x^{(M-1)}\left(i\right)\right)\end{array}\right],$

Wherein, x^(v)I v layer data that () expression layering obtains, v=0,1 ..., M-1, For the data symbol number in every layer；

It is M sized by W²The M port SFBC encoder matrix of × 2M；

P is a column vector,

P=[x₀ x₁ ... x_N-1]^T,Q ∈ 0,1 ..., and Q-1}, k=0,1 ..., N-1, Q are for being more than or equal to The positive integer of N, W Yu P is Kronecker and amasss；

Y^a(i)=[y^a(i,0) y^a(i,1) ... y^a(i,M-1)]^T, a=0 ..., N-1, y^a(i, b)=[y^(a·M)(Mi+b) y^(a·M+1)(Mi+b) ... y^(a·M+M-1)(Mi+b)]^T, b=0 ..., M-1, its In, all antenna ports are divided into N group, and often group comprises M antenna port, y^(a·M+r)(Mi+b) a group is represented (Mi+b) individual symbol of r antenna port, r=0 ..., M-1.

Preferably, the data of user being divided into many groups, often group data are divided into M shell, to often organizing data respectively Carry out the SFBC encoding operation of the vertical precoding processing of described addition, obtain each antenna port of each group Data vector, is then overlapped the data vector of described many groups of each port and sends, the number of each group According to using identical W matrix, the data acquisition of different groups different q values, the quantity of described many groups are less than In N.

Preferably, for multiple users, the data of each user are divided into M shell, the M shell number to each user According to carrying out the SFBC encoding operation of the vertical precoding processing of described addition respectively, obtain each sky of each user The data vector of line cap, is then overlapped the data vector of the plurality of user of each port concurrently Sending, the data acquisition of each user is with identical W matrix, and the data acquisition of different user is by different q values, described The number of multiple users is less than or equal to N.

In above-mentioned all methods, q can be fixed value, it is also possible to for dynamic value, can by eNB according to The vertical channel status information of UE feedback dynamically adjusts q value.

Preferably, the SFBC encoder matrix of 2 ports during M=2, W use LTE R8 version.

Preferably, the SFBC encoder matrix of 4 ports during M=4, W use LTE R8 version.

The sending method of the present invention, under two-dimensional antenna array situation, supports sending out of single user more antennas port Send diversity, support the transmission diversity of multi-user simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, retouch below Accompanying drawing in stating is some embodiments of the present invention, for those of ordinary skill in the art, is not paying On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the operating principle block diagram of the SFBC transmission deversity scheme of background technology；

Fig. 2 is the input and output schematic diagram sending deversity scheme of 2 ports of background technology；

Fig. 3 is the input and output schematic diagram sending deversity scheme of 4 ports of background technology；

Fig. 4 is the operating principle block diagram of the SFBC transmission deversity scheme of the present invention.

Detailed description of the invention

For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that Described embodiment is a part of embodiment of the present invention rather than whole embodiments；It should be noted that In the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Based on Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise Every other embodiment, broadly fall into the scope of protection of the invention.

All embodiments of the invention are two-dimensional antenna array scene, and M is the level side of two-dimensional antenna array To port number, N is the port number of the vertical direction of two-dimensional antenna array.

Embodiment 1

The operating principle block diagram of the inventive method as shown in Figure 4, first splits data into M shell, then to M Layer data carries out adding the SFBC encoding operation of vertical precoding processing, and coding result is mapped to M*N Antenna port.The method can shape the transmission diversity gain improving single user further by vertical beam. The present embodiment by M=2, single user situation as a example by illustrate the present invention SFBC send deversity scheme, The SFBC encoding operation adding vertical precoding processing is represented by the following formula:

$\left[\begin{array}{c}{y}^{\left(0\right)}\left(2i\right)\\ y^{\left(1\right)}\left(2i\right)\\ y^{\left(0\right)}(2i+1)\\ y^{\left(1\right)}(2i+1)\\ ......\\ y^{(2N-2)}\left(2i\right)\\ y^{(2N-1)}\left(2i\right)\\ y^{(2N-2)}(2i+1)\\ y^{(2N-1)}(2i+1)\end{array}\right]=\frac{1}{\sqrt{2}}(\left[\begin{array}{cccc}1& 0& j& 0\\ 0& -1& 0& j\\ 0& 1& 0& j\\ 1& 0& -j& 0\end{array}\right]\&CircleTimes;P)\left[\begin{array}{c}\mathrm{Re}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Re}\left(x^{\left(1\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(1\right)}\left(i\right)\right)\end{array}\right]$

W in above formula uses the SFBC encoder matrix of 2 ports in LTE R8 version.

P=[x₀ x₁ ... x_N-1]^T,Q ∈ 0,1 ..., Q-1}, k=0,1 ..., N-1.

Q is the positive integer more than or equal to N, and when Q is equal to N, P vector is DFT vector；When Q is big When N, P vector is the DFT vector of over-sampling.

Q take 0,1 ..., an arbitrary value in the range of Q-1}, q can be that fixed value can also be for dynamic value.

Such as, when q is fixed value, it is assumed that q=1, then $P={\left[\begin{array}{cccc}1& e^{j\frac{2\mathrm{\&pi;}}{Q}}& ...& e^{j\frac{2\mathrm{\&pi;}}{Q}(N-1)}\end{array}\right]}^T.$

When q is dynamic value, eNB select every time 0,1 ..., in Q-1} one value is as the power sending diversity Value q, and inform UE.After UE receives the weights q sending diversity, obtain the addition of currently transmitted diversity The SFBC encoder matrix of vertical precoding processing, thus recover original series.

As N=2, P=[1 x],q∈0,1,...,Q-1.Now, Bidimensional antenne array is classified as 2*2 The transmission antenna port of size, is expressed as antenna 0, antenna 1, antenna 2 and antenna 3, all antennas Being divided into 2 groups, the 1st group comprises antenna 0 and antenna 1, and the 2nd group comprises antenna 2 and antenna 3.One number According to sequence { S₀,S₁,S₂,S₃... }, it is divided into two layers of x⁽⁰⁾(i) and x⁽¹⁾(i), x⁽⁰⁾(i)={ S₀,S₂... }, x⁽¹⁾(i)={ S₁,S₃,...}。 After the SFBC coding adding vertical precoding processing, for the 1st group of antenna port: on antenna 0 Transmission sequence be { S₀,S₁,S₂,S₃... }, transmission sequence on antenna 1 isRight 2nd group of antenna port: transmission sequence on antenna 2 is Transmission sequence on antenna 3 is

As N=4, P=[x₀ x₁ x₂ x₃],q∈0,1,...,Q-1.Now, two-dimensional antenna Array is the transmission antenna port of 2*4 size, is expressed as antenna 0, antenna 1, antenna 2, antenna 3 ... Antenna 7, all antennas are divided into 4 groups, and the 1st group comprises antenna 0 and antenna 1, and the 2nd group comprises antenna 2 With antenna 3, the 3rd group comprises antenna 4 and antenna 5, and the 4th group comprises antenna 6 and antenna 7.One data Sequence { S₀,S₁,S₂,S₃... }, it is divided into two layers of x⁽⁰⁾(i) and x⁽¹⁾(i), x⁽⁰⁾(i)={ S₀,S₂... }, x⁽¹⁾(i)={ S₁,S₃,...}。 After the SFBC coding adding vertical precoding processing, for the 1st group of antenna port: on antenna 0 Transmission sequence be { S₀,S₁,S₂,S₃... }, transmission sequence on antenna 1 isFor 2nd group of antenna port: transmission sequence on antenna 2 is Transmission sequence on antenna 3 isFor the 3rd group Antenna port: the transmission sequence on antenna 4 is Transmission sequence on antenna 5 isFor the 3rd Group antenna port: the transmission sequence on antenna 6 is Transmission sequence on antenna 7 is

Embodiment 2

The present embodiment by M=4, single user situation as a example by illustrate the present invention SFBC send diversity side Method, the SFBC encoding operation formula 1-1 adding vertical precoding processing represents:

W therein uses the SFBC encoder matrix of 4 ports in LTE R8 version.

Now, Bidimensional antenne array is classified as the transmission antenna port of 4*N size, is expressed as antenna 0, sky Line 1, antenna 2, antenna 3 ... antenna 4N-1, all antennas are divided into N group, the 1st group comprise antenna 0, Antenna 1, antenna 2 and antenna 3, the 2nd group comprises antenna 4, antenna 5, antenna 6 and antenna 7, other Group the like.One data sequence { S₀,S₁,S₂,S₃... }, it is divided into four layers of x⁽⁰⁾(i)、x⁽¹⁾(i)、x⁽²⁾(i) and x⁽³⁾(i), x⁽⁰⁾(i)={ S₀,S₄... }, x⁽¹⁾(i)={ S₁,S₅... }, x⁽²⁾(i)={ S₂,S₆... }, x⁽³⁾(i)={ S₃,S₇,...}.Through adding After entering the SFBC coding of vertical precoding processing, for the 1st group of antenna port: the transmission on antenna 0 Sequence is { S₀,S₁, 0,0 ... }, transmission sequence on antenna 1 is { 0,0, S₂,S₃... }, transmission on antenna 2 Sequence isTransmission sequence on antenna 3 isIn like manner, for kth Group antenna port, k=0,1 ..., N-1: the transmission sequence on antenna 4k is Transmission sequence on antenna 4k+1 isTransmission sequence on antenna 4k+2 It is classified asTransmission sequence on antenna 4k+3 is $\{\mathrm{0,0},{-e}^{j\frac{2\mathrm{\&pi;}}{Q}\mathrm{kq}}\&CenterDot;S_3^{*},e^{j\frac{2\mathrm{\&pi;}}{Q}\mathrm{kq}}\&CenterDot;S_2^{*},...\}.$

Formula 1-1

Embodiment 3

In embodiment 1 and embodiment 2, user data is all divided into M shell, and the present embodiment is furtherly The transmission diversity of the bright user data how supporting more number of plies.First user is divided into T group by the present embodiment, Often group data are further divided into M shell, and user data has actually been divided into M*T layer.

To often organizing the SFBC encoding operation that data add the M port of vertical precoding processing respectively, To the data vector of each antenna port of each group, then the data vector of described many groups of each port is entered Row superposition also sends, and the most often group data all use identical W matrix, and often group data carry out SFBC coding P vector one the matrix P of composition used during operation, specific as follows:

$P=\left[\begin{array}{cccc}{x}_{00}& x_{01}& ...& x_{0(T-1)}\\ x_{10}& x_{11}& ...& x_{1(T-1)}\\ ...& ...& ...& ...\\ x_{(N-1)0}& x_{(N-1)1}& ...& x_{(N-1)(T-1)}\end{array}\right],$

q_j∈ 0,1 ..., Q-1, k=0,1 ..., N-1, j=0,1 ..., T-1,

The jth of jth group selection P matrix arranges the P vector as oneself, and the data acquisition of different group is used No q value, uses q_jRepresent, so by the weak dependence between different lines vector, it is possible to distinguish not Wave beam with group.In order to ensure the orthogonality between group or weak dependence, number T of group is necessarily less than and is equal to N, the most at most can support the transmission diversity of N group data.Same, q_jFixed value or dynamic value can be taken.

The present embodiment realizes T different vertical precoding by selecting T different q value, it is ensured that different Between group, the orthogonal or class of data is orthogonal, makes single user support the transmission diversity of more numbers of plies, schedulable more bulk Long data, improves the handling capacity of single user.

Embodiment 4

The present embodiment illustrates the SFBC of the present invention as a example by the situation of multi-user and sends deversity scheme.This The basic thought of embodiment is similar to Example 3, total T user, first the data of each user is divided For M shell, the M shell data of each user are added respectively the M port of vertical precoding processing SFBC encoding operation, obtains the data vector of each antenna port of each user, then by each port The data vector of the plurality of user is overlapped and sends, wherein each with using identical W matrix per family, The data of each user carry out P vector one the matrix P of composition used during SFBC encoding operation, the most such as Under:

$P=\left[\begin{array}{cccc}{x}_{00}& x_{01}& ...& x_{0(T-1)}\\ x_{10}& x_{11}& ...& x_{1(T-1)}\\ ...& ...& ...& ...\\ x_{(N-1)0}& x_{(N-1)1}& ...& x_{(N-1)(T-1)}\end{array}\right],$

q_j∈ 0,1 ..., Q-1, k=0,1 ..., N-1, j=0,1 ..., T-1,

Jth user selects the jth of P matrix to arrange the P vector as oneself, and the data of different user Use no q value, use q_jRepresent, so by the weak dependence between different lines vector, it is possible to district Divide the wave beam of different user.In order to ensure the orthogonality between user or weak dependence, number T of user must The transmission diversity of N number of user the most at most must can be supported less than or equal to N.Same, q_jFixed value can be taken Or dynamic value.

The present embodiment realizes T different vertical precoding by selecting T different q value, it is ensured that different Between user, the orthogonal or class of data Layer is orthogonal, thus supports the transmission diversity of multi-user, improves throughput of system.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can Completing with the hardware relevant by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit In storage media, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage Medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CD.

Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited System；Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (8)

1. the SFBC of two-dimensional antenna array sends deversity scheme, the horizontal direction of described two-dimensional antenna array Being respectively M and N with the antenna port number of vertical direction, described method includes:

The data of user are divided into M shell, M shell data are added the SFBC of vertical precoding processing Encoding operation, encoding operation result is mapped to all antenna ports, the vertical precoding processing of described addition SFBC encoding operation is represented by the following formula:

$\left[\begin{array}{c}{Y}^0\left(i\right)\\ Y^1\left(i\right)\\ ......\\ Y^{N-1}\left(i\right)\end{array}\right]=(W\&CircleTimes;P)\left[\begin{array}{c}\mathrm{Re}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Re}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Re}\left(x^{(M-1)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(0\right)}\left(i\right)\right)\\ \mathrm{Im}\left(x^{\left(1\right)}\left(i\right)\right)\\ ......\\ \mathrm{Im}\left(x^{(M-1)}\left(i\right)\right)\end{array}\right],$

Wherein, x^(v)I v layer data that () expression layering obtains, v=0,1 ..., M-1, i=0,1 ..., For the data symbol number in every layer；

It is M sized by W²The M port SFBC encoder matrix of × 2M；

P is a column vector,

P=[x₀ x₁ ... x_N-1]^T,Q ∈ 0,1 ..., and Q-1}, k=0,1 ..., N-1, Q are for being more than In the positive integer of N, W Yu P is Kronecker and amasss；

Y^a(i)=[y^a(i,0) y^a(i,1) ... y^a(i,M-1)]^T, a=0 ..., N-1, y^a(i, b)=[y^(a·M)(Mi+b) y^(a·M+1)(Mi+b) ... y^(a·M+M-1)(Mi+b)]^T, b=0 ..., M-1, its In, all antenna ports are divided into N group, and often group comprises M antenna port, y^(a·M+r)(Mi+b) a group is represented (Mi+b) individual symbol of r antenna port, r=0 ..., M-1.

Method the most according to claim 1, it is characterised in that:

The data of user are divided into many groups, and often group data are divided into M shell, carry out described respectively to often organizing data Add the SFBC encoding operation of vertical precoding processing, obtain the data vector of each antenna port of each group, Then the data vector of described many groups of each port being overlapped and sent, the data acquisition of each group is with identical W matrix, the data acquisitions of different groups different q values, the described quantity organized are less than or equal to N more.

Method the most according to claim 1, it is characterised in that:

For multiple users, the data of each user are divided into M shell, the M shell data of each user are entered respectively The SFBC encoding operation of the row vertical precoding processing of described addition, obtains each antenna port of each user Data vector, is then overlapped the data vector of the plurality of user of each port and sends, respectively using The data acquisition at family is with identical W matrix, and the data acquisition of different user is with different q values, the plurality of user Number less than or equal to N.

4. according to the method described in claims 1 to 3 any one, it is characterised in that: q is fixed value.

5. according to the method described in claims 1 to 3 any one, it is characterised in that: q is dynamic value.

Method the most according to claim 5, it is characterised in that: eNB according to UE feed back vertical Channel condition information dynamically adjusts q value.

7. according to the method described in claims 1 to 3 any one, it is characterised in that: M=2, W adopt SFBC encoder matrix with 2 ports in LTE R8 version.

8. according to the method described in claims 1 to 3 any one, it is characterised in that: M=4, W adopt SFBC encoder matrix with 4 ports in LTE R8 version.