CN101442352B - Method and apparatus for transmission diversity - Google Patents

Abstract

The invention discloses a transmit diversity method and a transmit diversity device. The method comprises the following steps: A, data to be transmitted is subject to transmit diversity coding according to a selected transmit diversity coding scheme to generate L-way coded data; B, for each slt, various elements of a first weight vector in a weight matrix are multiplied with the slt respectively to obtain k weighted coded data; the k weighted coded data are transmitted on k antennas of a first antenna group respectively; the slt is the first-way coded data transmitted at t<th> time; and different weight matrices are used to the coded data which contain the same information at different transmitting time. The transmit diversity method and the transmit diversity device can unify transmit diversity methods with different antenna configuration systems, and increase the coverage of signals. The weight matrix can be used to generate a corresponding equivalent channel response matrix at a receiving end, received signals are detected according to the same detection algorithm, and the implementation is convenient.

Description

A kind of emission diversity method and device

Technical field

The present invention relates to a kind of emission diversity method and device; Relate in particular to a kind of employing MIMO (Multiple-Input Multiple-Out; Multiple-input, multiple-output) and the emission diversity method and the device of the GSM of SIMO (Single-InputMultiple-Output singly goes into to have more) multi-antenna technology.

Background technology

Follow-on wireless communication system will provide better speech quality, the faster data transmission rate.But, the time multipath transmission environment, limited bandwidth resources and the user that become make above-mentioned requirements implement very difficulty to the demand of service.Effective ways that address these problems are to adopt diversity technique.Diversity technique can be divided into time diversity, frequency diversity and space diversity etc. according to the difference that obtains the independent pathway signal method.With regard to time diversity, frequency diversity and space diversity three, because under the slow fading situation, time domain interweaves and can cause the bigger delay of signal, will introduce interference this moment, thereby the business of delay sensitive is not suitable for; And when the coherence bandwidth of channel greater than apread spectrum bandwidth or delay of signals expansion relatively hour, it is just not too suitable to utilize spread spectrum to obtain frequency diversity; But in most of the cases, space diversity reception to communicate can obtain great diversity gain without the victim signal frequency bandwidth when guaranteeing message transmission rate.

In present many antenna mobile communication systems; Usually design the distinct transmit diversity scheme according to base station end different antennas configuring condition; Promptly adopt two antennas transmit diversity schemes in the base station that is provided with two antennas; Adopt four antennas transmit diversity schemes in the base station that is provided with four antennas, or the like.So not only increased the complexity and the cost of system, and will paralyse in whole base station under the situation of one of base station end appearance or several antenna cisco unity malfunctions.

Summary of the invention

Technical problem to be solved by this invention is, overcomes the deficiency of prior art, proposes a kind of unified emission diversity method and device that is applicable to multiple antenna configurations.

In order to address the above problem, the present invention provides a kind of emission diversity method, it is characterized in that, this method comprises following steps:

A: according to selected transmit diversity encoding scheme data to be launched are carried out the transmit diversity coding, generate L road coded data:

$\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ S_L\end{array}\right]=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^1& {\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^2& \&CenterDot;\&CenterDot;\&CenterDot;& s_1^{T-1}& s_1^T\\ \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;\\ s_L^1& {\mathrm{<figure-callout\; id="1"\; label="s\; L"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_L^{}& \&CenterDot;\&CenterDot;\&CenterDot;& s_L^{T-1}& s_L^T\end{array}\right],$ s _l ^tBe the l road coded data of launching constantly at t;

B: for each s _l ^t: with l weight vector in the weight matrix:

$W_l=\left[\begin{array}{c}{w}_{l,1}\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ w_{l,k}\end{array}\right]$ Each element respectively with s _l ^tMultiply each other and obtain k weighted coding data; K weighted coding data are launched at k antenna of l antenna sets respectively;

Wherein, to different x times, the coded data that comprises identical information is used different weight matrixs; 0＜l≤L, L＞1; 0＜t≤T, T＞1; K＞0.

In addition, each weight matrix is mutually orthogonal.

In addition, each weight vector in the weight matrix is mutually orthogonal.

In addition, the number of weight matrix is: [1/V] ⁺V is a channel coding rate; [] ⁺Expression rounds up.

In addition, said transmit diversity encoding scheme is two antenna Alamouti transmit diversity encoding schemes.

In addition, the transmitting antenna sum M is an even number, and the number of antenna of each antenna sets is M/2.

In addition,

Use first weight matrix at the 2x+1 x time $W=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}& w_{\mathrm{2,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& w_{\mathrm{2,2}}\end{array}\right];$

Use second weight matrix at the 2x x time $V=\left[\begin{array}{cc}{v}_{\mathrm{1,1}}& v_{\mathrm{2,1}}\\ v_{\mathrm{1,2}}& v_{\mathrm{2,2}}\end{array}\right];$

Wherein, 0≤x≤(T-1)/2.

In addition; Receiving terminal is according to channel response matrix H, and the first weight matrix W and the second weight matrix V generate equivalent channel response matrix

and use the equivalent channel response matrix to decipher; Wherein,

$\hat{H}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{w}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{w}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{w}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{w}_{\mathrm{2,2}}\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ h_{R,1}{w}_{\mathrm{1,1}}+h_{R,2}{w}_{\mathrm{1,2}}& h_{R,3}{w}_{\mathrm{2,1}}+h_{R,4}{w}_{\mathrm{2,2}}\end{array}\right];$

$\hat{J}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{v}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{v}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{v}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{v}_{\mathrm{2,2}}\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ h_{R,1}{v}_{\mathrm{1,1}}+h_{R,2}{v}_{\mathrm{1,2}}& h_{R,3}{v}_{\mathrm{2,1}}+h_{R,4}{v}_{\mathrm{2,2}}\end{array}\right];$

$R=\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ h_{R,1}& h_{R,2}& h_{R,3}& h_{R,4}\end{array}\right];$ R is the number of reception antenna.

The present invention also provides a kind of transmission diversity apparatus, comprises the chnnel coding unit, the planisphere map unit, and transmit diversity coding unit and antenna is characterized in that, this device also comprises the transmit diversity weighted units; Wherein,

Said transmit diversity coding unit is used for will be through said chnnel coding cell encoding according to the transmit diversity encoding scheme of setting, and the data to be launched after planisphere map unit mapping treatment carry out the transmit diversity coding, generates L road coded data:

$\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ S_L\end{array}\right]=\left[\begin{array}{ccccc}{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^1& {\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^2& \&CenterDot;\&CenterDot;\&CenterDot;& s_1^{T-1}& s_1^T\\ \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;\\ s_L^1& {\mathrm{<figure-callout\; id="1"\; label="s\; L"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_L^{}& \&CenterDot;\&CenterDot;\&CenterDot;& s_L^{T-1}& s_L^T\end{array}\right],$ s _l ^tBe the l road coded data of launching constantly at t;

Said transmit diversity weighted units is used to receive the L road coded data of transmit diversity coding unit output, and for each s in the coded data _l ^tOperate as follows: with l weight vector in the weight matrix:

$W_l=\left[\begin{array}{c}{w}_{l,1}\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ w_{l,k}\end{array}\right]$ Each element respectively with s _l ^tMultiply each other and obtain k weighted coding data; K weighted coding data are launched at k antenna of l antenna sets respectively;

Wherein, to different x times, the coded data that comprises identical information is used different weight matrixs; 0＜l≤L, L＞1; 0＜t≤T, T＞1; K＞0.

In addition, each weight matrix that said transmit diversity weighted units is used is mutually orthogonal, and each weight vector in the weight matrix is mutually orthogonal; The number of weight matrix is: [1/V] ⁺V is the channel coding rate of said chnnel coding unit; [] ⁺Expression rounds up.

By on can know, adopt emission diversity method of the present invention and the device can unify the emission diversity method of different antennae configuration-system, increased the coverage of signal.And can generate corresponding equivalent channel response matrix by right to use value matrix at receiving terminal, detect the reception signal according to same detection algorithm, it is convenient to implement.In addition, this method does not require the spacing of antenna, can operate as normal under big antenna distance yet.

Description of drawings

Fig. 1 is an embodiment of the invention emission diversity method flow chart;

Fig. 2 is the array pattern that satisfies 2 pairing wave beams of weight vector of orthogonality relation in one group of weight matrix;

Fig. 3 is the system configuration sketch map of embodiment of the invention transmission diversity apparatus.

Embodiment

Present invention is described will to combine accompanying drawing and embodiment below.

Fig. 1 is an embodiment of the invention emission diversity method flow chart.Present embodiment is an example to be provided with four antennas and to adopt the base station of Alamouti (Ao Mo carries) transmit diversity encoding scheme, and the present invention is elaborated.As shown in Figure 1, this method comprises following steps:

101: transmitting terminal is confirmed the group number of weight matrix according to channel coding rate, and each group weight matrix comprises 2 weight vectors;

If channel coding rate is K/N, then select [N/K] ⁺The group weight matrix comes the two paths of data with behind minute collection coding of loop cycle to multiply each other wherein [N/K] ⁺Expression rounds up to N/K.Wherein N and K are positive integer.

In the present embodiment, K=1, N=2, promptly channel coding rate is 1/2, and the group number of weight matrix is that 2, the 1,2 antennas are first antenna sets, and the 3rd, 4 antenna is second antenna sets.

102: transmitting terminal is confirmed the dimension of weight vector according to the quantity of antenna configurations;

If the base station end antenna number is M, M is the even number greater than 2; Then M root antenna is divided into 2 groups, the antenna number of each group is M/2.The number with these two groups of antennas is equal respectively for the dimension of 2 weight vectors in each group weight matrix.

In the present embodiment, antenna number M=4, promptly the dimension of weight vector is 2.

103: transmitting terminal is confirmed the weights of two groups of each weight vectors of weight matrix;

When the design weights, follow the selection of quadrature; 2 different weight vectors are quadratures in each group weight matrix; On the same group weight matrix is not a quadrature yet; The area that the lobe of the corresponding wave beam of different weight vectors is overlapped is very little, and the beam coverage that two groups of weight matrixs produce reaches maximum.

Fig. 2 is the array pattern that satisfies 2 pairing wave beams of weight vector of orthogonality relation in one group of weight matrix.As shown in Figure 2, when 2 weight vectors satisfied orthogonality relation, the area that the lobe of corresponding wave beam overlaps was very little.

If these two groups of weights are respectively W, V; Wherein,

W=[W ₁, W ₂], weight vector $W_{}$ ${}_1=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}\end{array}\right],$ Weight vector $W_2=\left[\begin{array}{c}{w}_{\mathrm{2,1}}\\ w_{\mathrm{2,2}}\end{array}\right];$

V=[V ₁, V ₂], weight vector $V_{}$ ${}_1=\left[\begin{array}{c}{v}_{\mathrm{1,1}}\\ v_{\mathrm{1,2}}\end{array}\right],$ Weight vector $V_2=\left[\begin{array}{c}{v}_{\mathrm{2,1}}\\ v_{\mathrm{2,2}}\end{array}\right].$

104: transmitting terminal is encoded according to the transmit diversity encoding scheme of two antennas to the data S to be sent through chnnel coding and planisphere modulation, generates two-way and divides the collection coded data;

In the present embodiment, be that benchmark divides the collection encoding scheme with two antenna Alamouti transmit diversity encoding schemes, the data way of this transmit diversity encoding scheme is 2, and being about to 1 road digital coding to be sent is 2 road branch collection coded datas.If:

S＝[S ₁，S ₂，S ₃，S ₄，...，S _N-1，S _N]；

Then divide data (be called for short and the divide the collection coded data) SD after collection is encoded to be through Alamouti transmit diversity encoding scheme:

$\mathrm{SD}=\left[\begin{array}{ccccccc}{S}_1& {-S}_2^{*}& S_3& {-S}_4^{*}& \&CenterDot;\&CenterDot;\&CenterDot;& S_{N-1}& {-S}_N^{*}\\ S_2& {\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}& S_4& S_3^{*}& \&CenterDot;\&CenterDot;\&CenterDot;& S_N& S_{N-1}^{*}\end{array}\right];$

Wherein, 1 circuit-switched data that will send on each line display different antennae of SD, the different data that constantly will send are shown in each tabulation; S _i ^*Expression S _iConjugation, i=1,2 ..., N.

Can find out the data of the 1st row by SD $\left[\begin{array}{c}{S}_1\\ S_2\end{array}\right]$ Data with the 2nd row $\left[\begin{array}{c}{-S}_2^{*}\\ {\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}\end{array}\right]$ Be orthogonality relation.

105: transmitting terminal is used alternatingly in two groups of weight matrixs one group and successively each branch collection coded data constantly back that computes weighted is sent in each antenna sets; Respectively corresponding antenna sets of each weight vector in the weight matrix wherein, each antenna sets corresponding a tunnel is divided collection coded data;

Above-mentioned ranking operation is meant: the circuit-switched data that will at a time send multiplies each other with the corresponding weight vector of this circuit-switched data of this moment, and sends in the corresponding antenna group; The multiply each other weighted data of gained of weights of every antenna transmission weight vector in the antenna sets and this data.

For example:

The branch collection coded data that first moment sent is: $\mathrm{SD}\left[1\right]=\left[\begin{array}{c}{S}_1\\ S_2\end{array}\right];$ The weight vector of the first group weight matrix corresponding with first moment is respectively ${\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">W</figure-callout>}}_1=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}\end{array}\right],$ $W_2=\left[\begin{array}{c}{w}_{\mathrm{2,1}}\\ w_{\mathrm{2,2}}\end{array}\right];$ The 1st circuit-switched data S among the SD [1] ₁Corresponding W ₁, the 2nd circuit-switched data S ₂Corresponding W ₂

Will ${\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\&times;{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">W</figure-callout>}}_1={\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\&times;\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}\end{array}\right]=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}{S}_1\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\end{array}\right]$ Send into first antenna sets and send, that is: the 1st antenna transmission w _1,1S ₁, the 2nd antenna transmission w _1,2S ₁

Will $S_2\&times;W_2=S_2\&times;\left[\begin{array}{c}{w}_{\mathrm{2,1}}\\ w_{\mathrm{2,2}}\end{array}\right]=\left[\begin{array}{c}{w}_{\mathrm{2,1}}{S}_2\\ w_{\mathrm{2,2}}{S}_2\end{array}\right]$ Send into second antenna sets and send, that is: the 3rd antenna transmission w _2,1S ₂, the 4th antenna transmission w _2,2S ₂

The branch collection coded data that second moment sent is: $\mathrm{SD}\left[2\right]=\left[\begin{array}{c}-S_2^{*}\\ {\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}\end{array}\right];$ The weight vector of the second group weight matrix corresponding with second moment is respectively ${\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1=\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}\end{array}\right],$ $V_2=\left[\begin{array}{c}{v}_{\mathrm{2,1}}\\ v_{\mathrm{2,2}}\end{array}\right];$ The 1st circuit-switched data-S among the SD [2] ₂ ^*Corresponding V ₁, the 2nd circuit-switched data S ₁ ^*Corresponding V ₂

Will ${{-S}_2}^{*}\&times;{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1={{-S}_2}^{*}\&times;\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}\end{array}\right]=\left[\begin{array}{c}{-\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,1}}{S}_2^{*}\\ {-\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}{S}_2^{*}\end{array}\right]$ Send into first antenna sets and send, that is: the 1st antenna transmission-v ₁₁S ₂ ^*, the 2nd antenna transmission-v _1,2S ₂ ^*

Will ${{{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}^{*}V}_2={{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1}^{*}\&times;\left[\begin{array}{c}{v}_{\mathrm{2,1}}\\ v_{\mathrm{2,2}}\end{array}\right]=\left[\begin{array}{c}{v}_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}\\ v_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}\end{array}\right]$ Send into second antenna sets and send, that is: the 3rd antenna transmission v _2,1S ₁ ^*, the 4th antenna transmission v _2,2S ₁ ^*

The ranking operation and the sending method in the follow-up moment can be by that analogy.

106: receiving terminal is according to 2 groups of weight matrix: W, and V generates 2 groups of equivalent channel response matrixes respectively:

and be used alternatingly 2 groups of equivalent channel response matrixes difference reception data are constantly deciphered according to the transmit diversity mode of two antennas;

For example, receiving terminal has 2 reception antennas, and the channel response matrix in first moment is H, and noise is N, and first signal that receives constantly is at receiving terminal:

$R=H\&CenterDot;X+N=\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}\\ h_{\mathrm{2,1}}& h_{\mathrm{2,2}}& h_{\mathrm{2,3}}& h_{\mathrm{2,4}}\end{array}\right]\&CenterDot;\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,1}}{S}_1\\ {\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}{S}_1\\ w_{\mathrm{2,1}}{S}_2\\ w_{\mathrm{2,2}}{S}_2\end{array}\right]+N=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{w}_{\mathrm{2,2}}\\ h_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+h_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& h_{\mathrm{2,3}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+h_{2,4}{w}_{\mathrm{2,2}}\end{array}\right]\&CenterDot;\left[\begin{array}{c}{S}_1\\ S_2\end{array}\right]+N;$

The channel response matrix of order equivalence $\hat{H}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{w}_{\mathrm{2,2}}\\ h_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+h_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& h_{\mathrm{2,3}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+h_{\mathrm{2,4}}{w}_{\mathrm{2,2}}\end{array}\right].$

In like manner can obtain equivalent matrix

according to V

$\hat{J}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{v}_{\mathrm{2,2}}\\ h_{\mathrm{2,1}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+h_{\mathrm{2,2}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}& h_{\mathrm{2,3}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{2,1}}+h_{\mathrm{2,4}}{v}_{\mathrm{2,2}}\end{array}\right].$

Usually; For the reception antenna number is the situation of R (R＞0), and above-mentioned

and are respectively:

$\hat{H}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{w}_{\mathrm{2,2}}\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ h_{R,1}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+h_{R,2}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{1,2}}& h_{R,3}{\mathrm{<figure-callout\; id="1"\; label="w"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">w</figure-callout>}}_{\mathrm{2,1}}+h_{R,4}{w}_{\mathrm{2,2}}\end{array}\right];$

$\hat{J}=\left[\begin{array}{cc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{2,1}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}{v}_{\mathrm{2,2}}\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ h_{R,1}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>\; </figure-callout>}}_{\mathrm{1,1}}+h_{R,2}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{1,2}}& h_{R,3}{\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">v</figure-callout>}}_{\mathrm{2,1}}+h_{R,4}{v}_{\mathrm{2,2}}\end{array}\right];$

Wherein, channel response matrix $R=\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,2}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,3}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,4}}\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;& \&CenterDot;& \&CenterDot;\\ h_{R,1}& h_{R,2}& h_{R,3}& h_{R,4}\end{array}\right].$

By on can know, adopt emission diversity method of the present invention to unify the emission diversity method of different antennae configuration-system.In addition, when having few antennas to break down in one group of antenna of transmitting terminal, do not influence the normal operation of whole system yet.For example, in above embodiment, suppose the 2nd to transmit (therefore also can't launch pilot signal) of breaking down of first group of transmitting antenna; At receiving terminal, the component h12 of the pairing channel response matrix of this antenna, h22 are 0, and corresponding equivalent channel response matrix becomes:

$\hat{H}=\left[\begin{array}{cc}{h}_{11}{w}_{11}& h_{13}{w}_{21}+h_{14}{w}_{22}\\ h_{21}{w}_{11}& h_{23}{w}_{21}+h_{24}{w}_{22}\end{array}\right];$ $\hat{J}=\left[\begin{array}{cc}{h}_{11}{v}_{11}& h_{13}{v}_{21}+h_{14}{v}_{22}\\ h_{21}{v}_{11}& h_{23}{v}_{21}+h_{24}{v}_{22}\end{array}\right];$

System still can use as usual.

Based on principle of the present invention, the foregoing description can also have multiple variation pattern, for example:

(1) in the above-described embodiments the step 101, weight vector number of each group weight matrix is 2; In other embodiments, can divide the way of collection coding to confirm the number of the weight vector of each group weight matrix according to benchmark; Also just confirmed simultaneously the group number of antenna.For example, when benchmark divided the way of collection coding to be 4, the weight vector number of setting each group weight matrix was 4, and the antenna sets number also is 4.

(2) the benchmark branch collection encoding scheme of above embodiment employing is two antenna Alamouti transmit diversity encoding schemes, and corresponding branch collection coded data SD is:

$\mathrm{SD}=\left[\begin{array}{ccccccc}{S}_1& {-S}_2^{*}& S_3& {-S}_4^{*}& \&CenterDot;\&CenterDot;\&CenterDot;& S_{N-1}& {-S}_N^{*}\\ S_2& {\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}& S_4& S_3^{*}& \&CenterDot;\&CenterDot;\&CenterDot;& S_N& S_{N-1}^{*}\end{array}\right];$

In another embodiment, when adopting other two antenna transmit diversities encoding scheme, the difference to some extent that puts in order of each row of corresponding branch collection coded data SD, for example:

$\mathrm{SD}=\left[\begin{array}{ccccc}{S}_1& S_3& {-S}_2^{*}& {-S}_4^{*}& \&CenterDot;\&CenterDot;\&CenterDot;\\ S_2& S_4& {\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1^{*}& S_3^{*}& \&CenterDot;\&CenterDot;\&CenterDot;\end{array}\right];$

Put in order for this, need comprise two row of identical information,, use different weight matrixs like the 1st row and the 3rd row, the 2nd row and the 4th row.And for Alamouti transmit diversity encoding scheme, these two row are quadratures.

Fig. 3 is the system configuration sketch map of embodiment of the invention transmission diversity apparatus.As shown in Figure 3, this device comprises: chnnel coding unit, planisphere map unit, transmit diversity coding unit, transmit diversity weighted units and antenna.

The chnnel coding unit is used for data to be launched are carried out chnnel coding and output.

The planisphere map unit is used for the data to be launched of chnnel coding unit output are carried out planisphere mapping and output.

The transmit diversity coding unit is used for will be through said chnnel coding cell encoding according to the transmit diversity encoding scheme of setting, and the data to be launched after planisphere map unit mapping treatment carry out the transmit diversity coding, generates L road coded data:

$\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">S</figure-callout>}}_1\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ S_L\end{array}\right]=\left[\begin{array}{ccccc}{s}_1^1& {\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^2& \&CenterDot;\&CenterDot;\&CenterDot;& s_1^{T-1}& s_1^T\\ \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;& \&CenterDot;\&CenterDot;\&CenterDot;\\ s_L^1& s_{\mathrm{<figure-callout\; id="1"\; label="L"\; filenames="S2007101873467E00021.png"\; state="\{\{state\}\}">L</figure-callout>}}^1& \&CenterDot;\&CenterDot;\&CenterDot;& s_L^{T-1}& s_L^T\end{array}\right],$ s _l ^tBe the l road coded data of launching constantly at t;

The transmit diversity weighted units is used to receive the L road coded data of transmit diversity coding unit output, and for each s in the coded data _l ^tOperate as follows: with l weight vector in the weight matrix:

$W_l=\left[\begin{array}{c}{w}_{l,1}\\ \&CenterDot;\&CenterDot;\&CenterDot;\\ w_{l,k}\end{array}\right]$ Each element respectively with s _l ^tMultiply each other and obtain k weighted coding data; K weighted coding data are launched at k antenna of l antenna sets respectively;

Wherein, to different x times, the coded data that comprises identical information is used different weight matrixs; 0＜l≤L, L＞1; 0＜t≤T, T＞1; K＞0.

And each weight matrix that above-mentioned transmit diversity weighted units is used is mutually orthogonal, and each weight vector in the weight matrix is mutually orthogonal; The number of weight matrix is: [1/V] ⁺V is the channel coding rate of said chnnel coding unit; [] ⁺Expression rounds up.

Claims (10)

1. an emission diversity method is characterized in that, this method comprises following steps:

A: according to selected transmit diversity encoding scheme data to be launched are carried out the transmit diversity coding, generate L road coded data:

$\left[\begin{array}{c}{S}_1\\ ...\\ S_L\end{array}\right]=\left[\begin{array}{ccccc}{s}_1^1& s_1^2& ...& s_1^{T-1}& s_1^T\\ ...& ...& ...& ...& ...\\ s_L^1& s_L^2& ...& s_L^{T-1}& s_L^T\end{array}\right],$

Be the l road coded data of launching constantly at t;

B: for each

with l weight vector in the weight matrix:

$W_l=\left[\begin{array}{c}{w}_{l,1}\\ ...\\ w_{l,k}\end{array}\right]$ Each element respectively with

Multiply each other and obtain k weighted coding data; K weighted coding data are launched at k antenna of l antenna sets respectively;

Wherein, to different x times, the coded data that comprises identical information is used different weight matrixs; 0＜l≤L, L＞1; 0＜t≤T, T＞1; K＞0.

2. emission diversity method as claimed in claim 1 is characterized in that each weight matrix is mutually orthogonal.

3. emission diversity method as claimed in claim 1 is characterized in that, each weight vector in the weight matrix is mutually orthogonal.

4. emission diversity method as claimed in claim 1 is characterized in that, the number of weight matrix is: [1/V] ⁺V is a channel coding rate; [] ⁺Expression rounds up.

5. emission diversity method as claimed in claim 1 is characterized in that, said transmit diversity encoding scheme is two antenna Alamouti transmit diversity encoding schemes.

6. emission diversity method as claimed in claim 5 is characterized in that, the transmitting antenna sum M is an even number, and the number of antenna of each antenna sets is M/2.

7. emission diversity method as claimed in claim 6 is characterized in that,

Use first weight matrix at the 2x+1 x time $W=\left[\begin{array}{cc}{w}_{\mathrm{1,1}}& w_{\mathrm{2,1}}\\ w_{\mathrm{1,2}}& w_{\mathrm{2,2}}\end{array}\right];$

Use second weight matrix at the 2x x time $V=\left[\begin{array}{cc}{v}_{\mathrm{1,1}}& v_{\mathrm{2,1}}\\ v_{\mathrm{1,2}}& v_{\mathrm{2,2}}\end{array}\right];$

Wherein, 0≤x≤(T-1)/2.

8. emission diversity method as claimed in claim 7; It is characterized in that; Receiving terminal is according to channel response matrix H, and the first weight matrix W and the second weight matrix V generate equivalent channel response matrix

and use the equivalent channel response matrix to decipher; Wherein,

$\hat{H}=\begin{array}{c}\left[\begin{array}{cc}{h}_{\mathrm{1,1}}{w}_{\mathrm{1,1}}+h_{\mathrm{1,2}}{w}_{\mathrm{1,2}}& h_{\mathrm{1,3}}{w}_{\mathrm{2,1}}+h_{\mathrm{1,4}}{w}_{\mathrm{2,2}}\\ .& .\\ .& .\\ .& .\\ h_{R,1}{w}_{\mathrm{1,1}}+h_{R,2}{w}_{\mathrm{1,2}}& h_{R,3}{w}_{\mathrm{2,1}}+h_{R,4}{w}_{\mathrm{2,2}}\end{array}\right]\end{array};$

$\hat{J}=\begin{array}{c}\left[\begin{array}{cc}{h}_{\mathrm{1,1}}{v}_{\mathrm{1,1}}+h_{\mathrm{1,2}}{v}_{\mathrm{1,2}}& h_{\mathrm{1,3}}{v}_{\mathrm{2,1}}+h_{\mathrm{1,4}}{v}_{\mathrm{2,2}}\\ .& .\\ .& .\\ .& .\\ h_{R,1}{v}_{\mathrm{1,1}}+h_{R,2}{v}_{\mathrm{1,2}}& h_{R,3}{v}_{\mathrm{2,1}}+h_{R,4}{v}_{\mathrm{2,2}}\end{array}\right]\end{array};$

$R=\left[\begin{array}{cccc}{h}_{\mathrm{1,1}}& h_{\mathrm{1,2}}& h_{\mathrm{1,3}}& h_{\mathrm{1,4}}\\ .& .& .& .\\ .& .& .& .\\ .& .& .& .\\ h_{R,1}& h_{R,2}& h_{R,3}& h_{R,4}\end{array}\right];$ R is the number of reception antenna.

9. a transmission diversity apparatus comprises the chnnel coding unit, the planisphere map unit, and transmit diversity coding unit and antenna is characterized in that, this device also comprises the transmit diversity weighted units; Wherein,

Said transmit diversity coding unit is used for will be through said chnnel coding cell encoding according to the transmit diversity encoding scheme of setting, and the data to be launched after planisphere map unit mapping treatment carry out the transmit diversity coding, generates L road coded data:

$\left[\begin{array}{c}{S}_1\\ ...\\ S_L\end{array}\right]=\left[\begin{array}{ccccc}{s}_1^1& s_1^2& ...& s_1^{T-1}& s_1^T\\ ...& ...& ...& ...& ...\\ s_L^1& s_L^2& ...& s_L^{T-1}& s_L^T\end{array}\right],$ Be the l road coded data of launching constantly at t;

Said transmit diversity weighted units is used to receive the L road coded data of transmit diversity coding unit output, and operates as follows for each

in the coded data: with l weight vector in the weight matrix:

$W_l=\left[\begin{array}{c}{w}_{l,1}\\ ...\\ w_{l,k}\end{array}\right]$ Each element respectively with

Multiply each other and obtain k weighted coding data; K weighted coding data are launched at k antenna of l antenna sets respectively;

Wherein, to different x times, the coded data that comprises identical information is used different weight matrixs; 0＜l≤L, L＞1; 0＜t≤T, T＞1; K＞0.

10. transmission diversity apparatus as claimed in claim 9 is characterized in that, each weight matrix that said transmit diversity weighted units is used is mutually orthogonal, and each weight vector in the weight matrix is mutually orthogonal; The number of weight matrix is: [1/V] ⁺V is the channel coding rate of said chnnel coding unit; [] ⁺Expression rounds up.

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