CN101820334A - Method and equipment for feeding back unitary matrix - Google Patents

Abstract

The invention discloses a method and equipment for feeding back a unitary matrix. Common unitary matrixes can be fed back through characteristic parameters so as to make a transmitting end acquire correct sequence numbers of the unitary matrix, restore the sequence numbers to acquire corresponding channel information, reduce the occupation of system resources and save system expenditure in the feedback process by quantifying the numerical values of the sequence numbers.

Description

A kind of unitary matrix feedback method and equipment

Technical field

The present invention relates to communication technical field, particularly a kind of unitary matrix feedback method and equipment.

Background technology

At closed-loop MIMO (Multiple-Input Multiple-Output, multiple-input, multiple-output) use the precoding technique can the elevator system performance in the system, yet at FDD (Frequency Division Duplexed, Frequency Division Duplexing (FDD)) in the system, the feedback overhead of channel information greatly reduces throughput of system.

Under a lot of scenes, all need to feed back general unitary matrix in the communication system.For example: under the single user's scene in single sub-district, adopt based on QRD (QR Decomposition the base station, during ORTHOGONAL TRIANGULAR DECOMPOSITION) pre-coding scheme, the user need obtain channel matrix after ORTHOGONAL TRIANGULAR DECOMPOSITION is decomposed general unitary matrix feeds back to the base station as the pre-coding matrix of down link, could improve throughput of system by precoding technique.Under many cell scenario, the user need feed back to the base station to a plurality of unitary matrixs that a plurality of channel matrixes obtain after ORTHOGONAL TRIANGULAR DECOMPOSITION is decomposed, could obtain additional gain equally.

In addition, when the base station needs completely channel information, also can adopt the method for the general unitary matrix of feedback.General method is channel matrix H to be carried out SVD (Singular Value Decomposition, singular value decomposition) decompose, i.e. H=USV, and wherein matrix U and V are general unitary matrix, and S is that diagonal entry is the diagonal matrix of arithmetic number.The user feeds back to the base station to three matrixes respectively, and at this moment, channel information completely just can be known in the base station.

Obviously, the feedback of general unitary matrix U and V is an important step in feedback procedure, and the precision of feedback unitary matrix directly has influence on the integrated degree of the channel information that the base station recovers.

In the Single User MIMO system, the right singular matrix V of channel matrix H is the pre-coding matrix of using always.Complete dominance feedback unitary matrix V needs great overhead, and is also infeasible on the engineering.Therefore, the general employing carried out the SVD decomposition to channel information, the mode of feedback codebook index.

In the Single User MIMO system, with N _T=N _R=N _S=2 is example, N _TFor the base station end is sent out antenna number, N _RFor the UE end is received antenna number, N _SBe the data fluxion that sends.Definable consistency at the tenth of the twelve Earthly Branches, i.e. unitary matrix V and following two kinds of form equivalences thus:

In following formula,

With V during as pre-coding matrix, it is that 1 plural number is equivalent to carry out the angle rotation to sending data flow that certain row of V be multiply by mould, V is carried out column permutation be equivalent to carry out sequential replacement, and for the Single User MIMO system, these operations do not change overall system performance sending data flow.

Therefore, in the Single User MIMO system, the right singular matrix V of channel matrix H satisfies consistency at the tenth of the twelve Earthly Branches, and at this moment, V deteriorates to special unitary matrix by general unitary matrix.According to the definition of consistency at the tenth of the twelve Earthly Branches, can obtain the general formula of 2 * 2 unitary matrixs:

$\left[\begin{array}{cc}\cos {\mathrm{\θ}}_1& \sin {\mathrm{\θ}}_1\\ \sin {\mathrm{\θ}}_1{e}^{j{\mathrm{\θ}}_2}& \cos {\mathrm{\θ}}_1{e}^{j({\mathrm{\θ}}_2+\mathrm{\π})}\end{array}\right],{\mathrm{\θ}}_1\∈[0,\frac{\mathrm{\π}}{2}),{\mathrm{\θ}}_2\∈[0,\mathrm{\π})$

Promptly use two parameter θ ₁, θ ₂Can unique sign V matrix.

In LTE (Long Term Evolution, third generation mobile long evolving system) system, during two antenna transmission double fluid, pre-coding matrix is selected from code book as shown in table 1.Table 1 antenna port 0, used code book during the last transmission of 1}

As can be seen from Table 1, a pair of θ ₁, θ ₂Can unique corresponding one 2 * 2 special precoding unitary matrix.Code book is by θ in the table ₁=π/4, θ ₂[0, thus carry out π) that two special unitary matrixs that 2 rank uniform quantizations characterize form as code word matrix.In the pre-coding matrix selection course of closed-loop system, the angle parameter of 2 unitary matrix correspondences is approaching near being equivalent to 2 unitary matrixs.

Therefore, after UE obtains current channel information, the parameter θ that calculates ₁, θ ₂Corresponding with immediate quantized value, obtain θ ₁, θ ₂The code word sequence number of other corresponding quantitative value, and the code word sequence number fed back to transmitting terminal, transmitting terminal just obtains the pre-coding matrix of down link, thereby improves systematic function greatly.

In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:

Feed back the method for special unitary matrix V and can only feed back the special unitary matrix that satisfies consistency at the tenth of the twelve Earthly Branches, to feeding back general unitary matrix and inapplicable.

For example, the method of feeding back special unitary matrix V is single user's scene and just being suitable for when using precoding technique based on SVD in single sub-district only, when being generalized to other system or adopt other precoding modes to feed back general unitary matrix, method with the special unitary matrix V of feedback is fed back general unitary matrix, can reduce systematic function greatly.

Again for example, at many sub-districts CoMP (Coordinated Multipoint Transmission/Reception, when collaborative multicast communication) adopting precoding technique based on QRD in the system, need the pre-coding matrix of feedback this moment is general unitary matrix, do not satisfy consistency at the tenth of the twelve Earthly Branches, thereby existing feedback system is no longer suitable.

If adopt the method for dominance feedback, the mould of each element of unitary matrix and phase place are fed back to transmitting terminal respectively after quantizing.Adopt the dominance feedback can recover unitary matrix more accurately, but the feedback overhead that needs is huge at transmitting terminal.

Summary of the invention

The invention provides a kind of unitary matrix feedback method and equipment, realize the feedback of general unitary matrix, and save formed overhead in the feedback procedure.

For achieving the above object, one aspect of the present invention provides a kind of unitary matrix feedback method, be applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, receiving device obtains the pairing channel matrix of described transmitting terminal according to the signal that at least one transmitting terminal sent that receives, and decompose described channel matrix and obtain unitary matrix to be feedback, described method specifically may further comprise the steps:

Described receiving device is determined the pairing a plurality of characteristic parameters of described unitary matrix;

Described receiving device quantizes to obtain the sequence number of the pairing quantized value of each described characteristic parameter according to the codomain of each described characteristic parameter to each described characteristic parameter;

Described receiving device feeds back to the pairing transmitting terminal of described receiving device with the sequence number of the pairing quantized value of each described characteristic parameter, so that described dominant base obtains corresponding channel information.

Preferably,

Described receiving device is determined the pairing a plurality of characteristic parameters of described unitary matrix, specifically comprises:

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described receiving device, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described receiving device, comprise at least:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

Preferably,

When current when having a plurality of unitary matrix to be feedback,

Described benchmark unitary matrix is specially in described a plurality of unitary matrix to be feedback according to the default selected unitary matrix of selective rule;

Described other unitary matrixs are specially any one unitary matrix except that described benchmark unitary matrix in described a plurality of unitary matrix to be feedback.

Preferably,

Described receiving device is according to the codomain of each described characteristic parameter, and each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter, is specially:

Described receiving device carries out n bit to the codomain of each described characteristic parameter and quantizes, and obtains the quantized value set, the corresponding different respectively sequence number of each quantized value in the described quantized value set;

Described receiving device is determined the immediate quantized value of the value of described characteristic parameter, and gets access to the pairing sequence number of described quantized value.

Preferably,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that described receiving device quantizes specifically comprises:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that described receiving device quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

Preferably,

Described receiving device returns the sequence number of the pairing quantized value of each described characteristic parameter to giving the pairing transmitting terminal of described receiving device, so that described transmitting terminal obtains corresponding channel information, is specially:

Be provided with pairing codomain information of each identical characteristic parameter and quantized value set information in described transmitting terminal and the described receiving equipment;

Described transmitting terminal is determined corresponding quantized value according to the sequence number of described receiving equipment feedback;

Described transmitting terminal generates the individual features parameter according to described quantized value, and reduces corresponding unitary matrix, obtains corresponding channel information.

On the other hand, the embodiment of the invention also provides a kind of terminal equipment, is applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, comprising:

Pretreatment module is used for obtaining the pairing channel matrix in described base station according to the signal that at least one base station sent that receives, and decomposes described channel matrix and obtain unitary matrix to be feedback;

Determination module is connected with described pretreatment module, is used for determining the pairing a plurality of characteristic parameters of the resulting unitary matrix of described pretreatment module;

Quantization modules is connected with described determination module, is used for the codomain according to determined each characteristic parameter of described determination module, each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter;

Feedback module is connected with described quantization modules, is used for the sequence number of the pairing quantized value of resulting each characteristic parameter of described quantization modules is fed back to the pairing dominant base of described terminal equipment, so that described dominant base obtains corresponding channel information.

Preferably,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described determination module, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described determination module, comprise at least:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix;

Wherein, when current when having a plurality of unitary matrix to be feedback,

Described benchmark unitary matrix is specially in described a plurality of unitary matrix to be feedback according to the default selected unitary matrix of selective rule;

Described other unitary matrixs are specially any one unitary matrix except that described benchmark unitary matrix in described a plurality of unitary matrix to be feedback.

Preferably,

Described quantization modules is according to the codomain of each described characteristic parameter, and each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter, is specially:

Described quantization modules is carried out n bit to the codomain of each described characteristic parameter and is quantized, and obtains the quantized value set, the corresponding different respectively sequence number of each quantized value in the described quantized value set;

Described quantization modules is determined the immediate quantized value of the value of described characteristic parameter, and gets access to the pairing sequence number of described quantized value.

Preferably,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that described quantization modules quantizes specifically comprises:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that described quantization modules quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:

By using technical scheme of the present invention, can feed back general unitary matrix by characteristic parameter, thereby make the base station get access to unitary matrix information accurately, and reduction obtains corresponding channel information, thereby, realize effective adjustment, and the sequence number by quantized values is carried out in feedback procedure to system communication quality and terminal gain, less taking of system resource saved overhead.

Description of drawings

In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in the present invention or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The schematic flow sheet of a kind of unitary matrix feedback method that Fig. 1 provides for the embodiment of the invention;

The schematic flow sheet of a kind of single unitary matrix feedback method that Fig. 2 provides for the embodiment of the invention;

The schematic flow sheet of a kind of a plurality of unitary matrix feedback methods that Fig. 3 provides for the embodiment of the invention;

The structural representation of the application scenarios of a kind of unitary matrix feedback method that Fig. 4 provides for the embodiment of the invention;

The structural representation of a kind of terminal equipment that Fig. 5 provides for the embodiment of the invention.

Embodiment

The invention provides the scheme of the one or more general unitary matrixs of a kind of effective recessive feedback, can feed back general unitary matrix with less overhead.

The core concept of this technical scheme is to determine characteristic parameter for one or more unitary matrixs to be feedback, and the sequence number of definite pairing quantized value of this characteristic parameter, feed back corresponding characteristic parameter information by the feedback sequence number to transmitting terminal, owing to only need feed back serial number information, thereby can save a large amount of overheads.

This method is applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, receiving device obtains the pairing channel matrix of described transmitting terminal according to the signal that at least one transmitting terminal sent that receives, and channel matrix decomposition obtains unitary matrix to be feedback.

Specifically as shown in Figure 1, the schematic flow sheet of a kind of unitary matrix feedback method that provides for the embodiment of the invention specifically may further comprise the steps:

Step S101, receiving device are determined the pairing a plurality of characteristic parameters of unitary matrix.

When unitary matrix is current unique unitary matrix to be feedback, or unitary matrix in the pairing a plurality of characteristic parameters of the determined unitary matrix of receiving device, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the unitary matrix;

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the unitary matrix;

Or,

When unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of the determined unitary matrix of receiving device, comprise at least:

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the benchmark unitary matrix in the unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the benchmark unitary matrix in the unitary matrix.

Wherein, when current when having a plurality of unitary matrix to be feedback,

The benchmark unitary matrix is specially the default selected unitary matrix of selective rule of basis in a plurality of unitary matrixs to be feedback, and other unitary matrixs are specially any one unitary matrix except that the benchmark unitary matrix in a plurality of unitary matrixs to be feedback.

It is to be noted, above-mentioned default selective rule can be predefined a kind of selective rule, for example can specify the unitary matrix that channel information decomposited according to certain transmitting terminal is the benchmark unitary matrix, and be other unitary matrixs, and form the reference relation of characteristic parameter with the benchmark unitary matrix according to the unitary matrix that channel information decomposited of other transmitting terminals; Moreover, above-mentioned default selective rule also can be a kind of rule, i.e. picked at random benchmark unitary matrix in a plurality of unitary matrixs at random.

In concrete application scenarios, concrete selective rule content change can't influence protection scope of the present invention.

Step S102, receiving device be according to the codomain of each characteristic parameter, and each characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each characteristic parameter, is specially:

Receiving device carries out n bit to the codomain of each characteristic parameter and quantizes, and obtains the quantized value set, the sequence number that each quantized value in the quantized value set is corresponding different respectively;

Receiving device is determined the immediate quantized value of the value of characteristic parameter, and gets access to the pairing sequence number of quantized value.

Wherein, when unitary matrix is current unique unitary matrix to be feedback, or unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that receiving device quantizes specifically comprises:

The argument value of first element of first row in the unitary matrix;

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the unitary matrix;

Or,

When unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that receiving device quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the benchmark unitary matrix in the unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the benchmark unitary matrix in the unitary matrix.

Need to prove; the concrete form of above-mentioned sequence number can be a numeral; letter and other can unique sign quantized value the character of position in quantizing set; concrete sequence number form and transmission means can be adjusted according to the needs of concrete application scenarios, and such variation can't influence protection scope of the present invention.

Step S103, receiving device feed back to the pairing main transmitting terminal of receiving device with the sequence number of the pairing quantized value of each characteristic parameter, so that main transmitting terminal obtains corresponding channel information.

The main transmitting terminal here is for the service state of this receiving terminal with respect to other transmitting terminals in the current system, as broad as long on physical substance, the current edge that is in the affiliated sub-district of this main transmitting terminal of receiving terminal, be mainly receiving terminal by this main transmitting terminal service is provided, in follow-up flow process, if situations such as sub-district switchings, then the pairing main transmitting terminal of receiving terminal also can adjust accordingly, to guarantee the smooth realization of technical scheme.

In concrete application scenarios, the realization flow of this step is specially:

Be provided with pairing codomain information of each identical characteristic parameter and quantized value set information in main transmitting terminal and the receiving device.

It is to be noted; this setting can be unified in advance the setting; also can make according to certain cycle and between transmitting terminal and receiving terminal, carry out synchronous set information by interactive information; every unified technical scheme that can realize above-mentioned information between transmitting terminal and the receiving terminal before the unitary matrix feedback all belongs to protection scope of the present invention.

Main transmitting terminal is determined corresponding quantized value according to the sequence number of receiving device feedback according to above-mentioned codomain information and quantized value set information;

Main transmitting terminal generates the individual features parameter according to quantized value, and reduces corresponding unitary matrix, obtains corresponding channel information.

Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:

By using technical scheme of the present invention, can feed back general unitary matrix by characteristic parameter, thereby make the base station get access to unitary matrix information accurately, and reduction obtains corresponding channel information, thereby, realize effective adjustment, and the sequence number by quantized values is carried out in feedback procedure to system communication quality and terminal gain, less taking of system resource saved overhead.

In order to further specify the realization flow of technical solution of the present invention, describe by two kinds of situations earlier: situation one, the feedback of single unitary matrix, its schematic flow sheet as shown in Figure 2:

Step S201, receiving device are tried to achieve the parameter θ of unique sign unitary matrix according to unitary matrix to be feedback ₁, θ ₂,

Specifically comprise following flow process:

Calculate the argument of this unitary matrix first first element of row, be designated as

Calculate the mould negate cosine of this unitary matrix first first element of row, be designated as θ ₁, θ ₁∈ [0, pi/2).

The argument of calculating second element of this unitary matrix first row and first element is poor, is designated as θ ₂, θ ₂∈ [0,2 π).

Calculate the argument of first element of this unitary matrix secondary series, be designated as

In concrete application scenarios, the order that above-mentioned four processing are carried out in no particular order.

Step S202, receiving device quantize the parameter of trying to achieve.

Concrete, need be to the parameter θ that tries to achieve ₁, θ ₂,

On each parameter value territory, carry out n respectively ₁, n ₂, n ₃, n ₄Bit quantizes, and immediate quantized value correspondence obtains θ respectively ₁, θ ₂, The sequence number of corresponding quantitative value feeds back to transmitting terminal with the gained SEQ.XFER respectively.

To above-mentioned parameter (for convenience of description; with any one above-mentioned parameter is sign with α; in subsequent embodiment; also have identical setting; repeated description no longer; specifically represent the variation of character can't influence protection scope of the present invention) carry out n bit quantification, in this parameter range, get 2 ⁿIndividual quantized value

As span be α ∈ [0, pi/2), select the sequence number with the immediate quantized value of α, promptly

And SEQ.XFER fed back to transmitting terminal.

As span be α ∈ [0,2 π), the distance of definition between the angle

The sequence number of selection and the immediate quantized value of α, promptly

And SEQ.XFER fed back to transmitting terminal.

Information after step S203, receiving device will quantize sends to transmitting terminal.

Wherein, the quantification space and the quantized value of known each parameter of transmitting terminal.

The feedback of situation two, a plurality of unitary matrixs

As needs feedback feedback N, during the general unitary matrix in N 〉=2, concrete treatment step as shown in Figure 3:

Unitary matrix Q in step S301, the selected unitary matrix to be feedback of receiving device ₁, try to achieve the parameter θ of unique this unitary matrix of sign ₁₁, θ ₂₁,

Calculate the argument of this unitary matrix first first element of row, be designated as

Calculate the mould negate cosine of this unitary matrix first first element of row, be designated as θ ₁₁, θ ₁₁∈ [0, pi/2).

The argument of calculating second element of this unitary matrix first row and first element is poor, is designated as θ ₂₁, θ ₂₁∈ [0,2 π).

Calculate the argument of first element of this unitary matrix secondary series, be designated as

More than four orders in no particular order.

Step S302, receiving device are tried to achieve the corresponding parameter θ of each unitary matrix respectively according to the following steps to all the other N-1 matrix _1i, θ _2i, , i=2 ..., N.

Calculate the argument of i unitary matrix first first element of row, be designated as

Calculate the mould negate cosine of i unitary matrix first first element of row, be designated as θ _1i, θ _1i∈ [0, pi/2).

The argument of calculating second element of i unitary matrix first row and first element is poor, is designated as θ _2i, θ _2i∈ [0,2 π).

Calculate the argument of first element of i unitary matrix secondary series, be designated as

Calculate the parameter of i unitary matrix With first unitary matrix Q ₁Parameter Differential seat angle

Calculate the parameter of i unitary matrix

With first unitary matrix Q ₁Parameter

Differential seat angle

Step S303, receiving device are tried to achieve the parameter θ of this unitary matrix respectively by above step handle to N unitary matrix _1i, θ _2i,

, i=2 ..., N carries out n on each parameter value territory ₁, n ₂, n ₃, n ₄Bit quantizes, and is corresponding with immediate quantized value respectively, obtains θ _1i, θ _2i,

The sequence number of corresponding quantitative value feeds back to transmitting terminal with the gained sequence number respectively.

Concrete steps are as follows:

The angle parameter alpha is carried out n bit quantize, in this parameter range, get 2 ⁿIndividual quantized value

As span be α ∈ [0, pi/2), select the sequence number with the immediate quantized value of α, promptly

And SEQ.XFER fed back to transmitting terminal.

As span be α ∈ [0,2 π), and the distance of definition between the angle

The sequence number of selection and the immediate quantized value of α, promptly

And SEQ.XFER fed back to transmitting terminal.

The quantification space and the quantized value of known each parameter of transmitting terminal.Go out the quantized value of each parameter according to the sequence number correspondence of N each parameter of unitary matrix of feedback, can reconstruct N of feedback generally unitary matrix.

Characterize the parameter θ of mould in the unitary matrix ₁, span is θ ₁∈ [0, pi/2).

Further, the present invention also provides a kind of quantification manner of characteristic parameter, with θ ₁Quantization method be example as an illustration:

Work as θ ₁When not quantizing, θ ₁Quantized value be fixed value { π/4}

Work as θ ₁Quantification space when being 1bit, θ ₁Carry out 2 rank and quantize, its quantized value is:

$\{a\cos (\sqrt{6}/3),a\cos (\sqrt{3}/3)\};$

Work as θ ₁Quantification space when being 2bit, θ ₁Carry out 4 rank and quantize, its quantized value is:

$\{a\cos (2/\sqrt{5}),a\cos (\sqrt{3}/\sqrt{5}),a\cos (\sqrt{2}/\sqrt{5}),a\cos (1/\sqrt{5})\};$

Work as θ ₁Quantification space when being 3bit, θ ₁Carry out 8 rank and quantize, its quantized value is:

$\{a\cos (2\sqrt{2}/3),a\cos (\sqrt{7}/3),a\cos (\sqrt{6}/3),a\cos (\sqrt{5}/3),$

$a\cos (2/3),a\cos (\sqrt{3}/3),a\cos (\sqrt{2}/3),a\cos (1/3)\};$

Three parameters in addition , can uniform quantization in span, quantization method is exemplified below:

Work as θ ₁Quantification space when being 1bit, θ ₁Carry out 2 rank and quantize, its quantized value is:

{0，π}；

Work as θ ₁Quantification space when being 2bit, θ ₁Carry out 4 rank and quantize, its quantized value is:

{0，π/2，π，3π/2}；

Work as θ ₁Quantification space when being 3bit, θ ₁Carry out 8 rank and quantize, its quantized value is:

{0，π/4，π/2，3π/4，π，5π/4，3π/2，7π/4}；

Work as θ ₁Quantification space when being 4bit, θ ₁Carry out 16 rank and quantize, its quantized value is:

{0，π/8，π/4，3π/8，π/2，5π/8，3π/4，7π/8，π，

9π/8，5π/4，11π/8，3π/2，13π/8，7π/4，15π/8}；

The corresponding sequence number of above-mentioned each quantized value, the overhead of a unitary matrix of feedback is to quantize θ respectively ₁, θ ₂,

Needed bit number sum.

Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:

By using technical scheme of the present invention, can feed back general unitary matrix by characteristic parameter, thereby make transmitting terminal get access to unitary matrix information accurately, and reduction obtains corresponding channel information, thereby, realize effective adjustment, and the sequence number by quantized values is carried out in feedback procedure to system communication quality and terminal gain, less taking of system resource saved overhead.

For technical scheme of the present invention more clearly is described, at first, submeter branch storehouse technology is set forth accordingly.

In follow-up explanation, for convenience of explanation, be that example replaces above-mentioned receiving device with the terminal equipment, corresponding, be that example replaces above-mentioned transmitting terminal with the base station, the variation of concrete title does not influence protection scope of the present invention.

The method that the invention provides the feedback unitary matrix can be applied to single user's multiple-input and multiple-output scene in the CoMP system.

CoMP system as shown in Figure 4, sub-district A and sub-district B form CoMP cooperation cell bunch, and (base station-A and base station-B) service simultaneously is positioned at the user UE-A at A edge, sub-district, so sub-district A can regard the main plot of UE-A as in the base station of this two sub-district.UE-A obtains behind the channel information through a series of processing, the required pre-coding matrix F in two base stations ₁And F ₂Feed back to base station, main plot base station-A.

Base station-A sends to base station-B to the pre-coding matrix sequence number of the data trnascription that sends to UE-A and base station-B by back haul link again, thereby base station-A and base station-B are adopted CoMP JT (JointTransmission unites transmission) pattern to send identical data to targeted customer UE-A.

Suppose that each base station is equipped with two antennas in the cooperation cell bunch, utilize spatial reuse to send double fluid to UE-A, UE-A is equipped with two antennas and is used to receive two data flow.

Suppose that CoMP sends the sub-district and counts N=2; Data flow to be launched

Base station transmitting terminal and UE-A receiving terminal are equipped with N respectively _T=2 and N _R=2 antennas, General N _R≤ N _T

Two cell base stations use pre-coding matrix to be respectively F ₁And F ₂, be N _TN _SMatrix.

Then the signal of receiving at the UE-A side joint is:

$r=\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{H}_i{F}_i\right)s+n$

Wherein, H _i, i=1 ... N is a channel matrix, is N _RN _TMatrix, its element H _{I, [pq]}CN (0,1).N is the noise of receiving terminal, and n CN (0, σ ²I).

Adopt parc technology, each data flow has independently coded modulation and rate controlled.

Employing is based on the precoding technique of QRD (ORTHOGONAL TRIANGULAR DECOMPOSITION).

After the UE-A end obtains channel information, respectively to H _i ^H, i=1 ... N carries out QR respectively and decomposes, then

H _i ^H＝Q _iR _i，i＝1，…N；

Q wherein _iBe a N _TN _TUnitary matrix, R _iBe a N _TN _RUpper triangular matrix, and diagonal entry is arithmetic number entirely, this moment, QR decomposed the Q that produces _iAnd R _iBe unique.

In this system, Q _iNot satisfying consistency at the tenth of the twelve Earthly Branches, is general unitary matrix.The general formula of 2 * 2 general unitary matrixs is as follows

Because Q _iTwo column permutations are R with equivalence _iDisplacement in the ranks.In the CoMP system, the inconsistent of the equivalent channel structure of different districts causes the merging gain to reduce greatly.Application in the CoMP system has determined Q _iTwo column permutations have changed systematic function, i.e. θ ₂∈ [0,2 π), compare the parameter θ of special unitary matrix ₂Span enlarged one times.

Work as Q _iIt is one plural number that certain row multiply by a mould, is equivalent to R _i ^HEvery row multiply by this plural conjugation, cause N equivalent channel R _i ^HThe corresponding phase of the every row of diagonal entry is inconsistent, greatly reduces the equivalent channel gain after the merging.Therefore, Q _iEvery row carry out the angle rotation and have changed systematic function, promptly have parameter

To sum up, be used for the CoMP system in the precoding of decomposing based on QR, needing the precoding unitary matrix of feedback is general unitary matrix, needs the unique decision of four parameters ability, and parameter range is as follows:

Comprehensive above-mentioned data, UE-A termination are collected mail and number can be expressed as:

$r=\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{H}_i{F}_i\right)s+n=\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{R}_i^H{Q}_i^H{F}_i\right)s+n$

Wherein,

The pre-coding matrix of each base station adopts

Wherein, definition

The CoMP cooperation cell bunch is made up of N sub-district.For the base station, main plot, UE only need feed back Q ₁Parameter θ ₁₁, θ ₂₁Be enough to guarantee the lower triangular structure of equivalent channel, therefore

Can adopt the 0bit feedback, this moment, the equivalent channel diagonal entry was that phase place is respectively

Plural number.

For the phase place of element on the equivalent channel diagonal that guarantees other sub-districts in UE and the CoMP cooperation cell bunch also with main plot equivalent channel diagonal on the phase place of element be consistent, the pre-coding matrix of all the other cell base stations need carry out the phase place adjustment.

For whole C oMP system, the parameter that needs to quantize has main plot pre-coding matrix Q ₁Corresponding parameters θ ₁₁, θ ₂₁,

With the pre-coding matrix of all the other N-1 sub-district in the CoMP cooperation cell bunch corresponding parameters θ respectively _1i, θ _2i,

, i=2 ... N.

Dividing precision to the unitary space is relevant by the size of feedback space.Bit number for feedback is many more, and the amount rank are more little, and unitary matrix is accurate more quantitatively.To θ _1i, i 〉=1 ..., N carries out n ₁Bit quantizes; θ _2i, i 〉=1 ..., N carries out n ₂Bit quantizes;

Carry out n ₃Bit quantizes, in the present embodiment, Can not quantize, i.e. n ₃=0bit;

, all carry out n ₄Bit quantizes.

Feed back to the base station, main plot then, the whole system expense is [(n ₁+ n ₂) * N+2n ₄* (N-1)] bit, each base station can recover suitable pre-coding matrix, and the UE-A end obtains the relevant gain that merges.

Can realize the relevant merging of channel based on the precoding technique of QRD.Because the lower triangular structure of equivalent channel, UE can adopt SIC (Successive Interference Cancellation, serial interference elimination) receiver to detect.

Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:

By using technical scheme of the present invention, can feed back general unitary matrix by characteristic parameter, thereby make the base station get access to unitary matrix information accurately, and reduction obtains corresponding channel information, thereby, realize effective adjustment, and the sequence number by quantized values is carried out in feedback procedure to system communication quality and terminal gain, less taking of system resource saved overhead.

In order to realize the above-mentioned technical scheme that the embodiment of the invention proposed, the embodiment of the invention has also proposed a kind of terminal equipment, as shown in Figure 5, the structural representation of a kind of receiving device that proposes for the embodiment of the invention, be applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, comprise:

Pretreatment module 51 be used for obtaining the pairing channel matrix of transmitting terminal according to the signal that at least one transmitting terminal sent that receives, and channel matrix decomposition obtains unitary matrix to be feedback;

Determination module 52 is connected with pretreatment module 51, is used for the pairing a plurality of characteristic parameters of pretreatment module 51 resulting unitary matrixs;

When unitary matrix is current unique unitary matrix to be feedback, or unitary matrix in the pairing a plurality of characteristic parameters of determination module 52 determined unitary matrixs, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the unitary matrix;

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the unitary matrix;

Or,

When unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of determination module 52 determined unitary matrixs, comprise at least:

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the benchmark unitary matrix in the unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the benchmark unitary matrix in the unitary matrix;

Wherein, when current when having a plurality of unitary matrix to be feedback,

The benchmark unitary matrix is specially in a plurality of unitary matrixs to be feedback according to the default selected unitary matrix of selective rule;

Other unitary matrixs are specially any one unitary matrix except that the benchmark unitary matrix in a plurality of unitary matrixs to be feedback.

Quantization modules 53 is connected with determination module 52, is used for the codomain according to determination module 52 determined each characteristic parameter, each characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each characteristic parameter;

Quantization modules 53 is according to the codomain of each characteristic parameter, and each characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each characteristic parameter, is specially:

The codomain of 53 pairs of each characteristic parameters of quantization modules is carried out n bit and is quantized, and obtains the quantized value set, the sequence number that each quantized value in the quantized value set is corresponding different respectively;

Quantization modules 53 is determined the immediate quantized value of value of characteristic parameter, and gets access to the pairing sequence number of quantized value.

Preferably,

When unitary matrix is current unique unitary matrix to be feedback, or unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that quantization modules 53 quantizes specifically comprises:

The argument value of first element of first row in the unitary matrix;

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the unitary matrix;

Or,

When unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that quantization modules 53 quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the unitary matrix;

Difference in the unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the benchmark unitary matrix in the unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the benchmark unitary matrix in the unitary matrix.

Feedback module 54 is connected with quantization modules 53, is used for the sequence number of the pairing quantized value of quantization modules 53 resulting each characteristic parameter is returned to giving the pairing main transmitting terminal of receiving device, so that main transmitting terminal obtains corresponding channel information.

Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:

By using technical scheme of the present invention, can feed back general unitary matrix by characteristic parameter, thereby make the base station get access to unitary matrix information accurately, and reduction obtains corresponding channel information, thereby, realize effective adjustment, and the sequence number by quantized values is carried out in feedback procedure to system communication quality and terminal gain, less taking of system resource saved overhead.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) each implements the described method of scene to carry out the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is a preferred schematic diagram of implementing scene, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.

The invention described above sequence number is not represented the quality of implementing scene just to description.

More than disclosed only be several concrete enforcement scene of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (10)

1. unitary matrix feedback method, be applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, receiving device obtains the pairing channel matrix of described transmitting terminal according to the signal that at least one transmitting terminal sent that receives, and decompose described channel matrix and obtain unitary matrix to be feedback, it is characterized in that described method specifically may further comprise the steps:

Described receiving device is determined the pairing a plurality of characteristic parameters of described unitary matrix;

Described receiving device quantizes to obtain the sequence number of the pairing quantized value of each described characteristic parameter according to the codomain of each described characteristic parameter to each described characteristic parameter;

Described receiving device feeds back to the pairing transmitting terminal of described receiving device with the sequence number of the pairing quantized value of each described characteristic parameter, so that described transmitting terminal obtains corresponding channel information.

2. the method for claim 1 is characterized in that, described receiving device is determined the pairing a plurality of characteristic parameters of described unitary matrix, specifically comprises:

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described receiving device, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described receiving device, comprise at least:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

3. method as claimed in claim 2 is characterized in that, and is current when having a plurality of unitary matrix to be feedback,

Described benchmark unitary matrix is specially in described a plurality of unitary matrix to be feedback according to the default selected unitary matrix of selective rule;

Described other unitary matrixs are specially any one unitary matrix except that described benchmark unitary matrix in described a plurality of unitary matrix to be feedback.

4. the method for claim 1 is characterized in that, described receiving device is according to the codomain of each described characteristic parameter, and each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter, is specially:

Described receiving device carries out n bit to the codomain of each described characteristic parameter and quantizes, and obtains the quantized value set, the corresponding different respectively sequence number of each quantized value in the described quantized value set;

Described receiving device is determined the immediate quantized value of the value of described characteristic parameter, and gets access to the pairing sequence number of described quantized value.

5. as claim 2 or 4 described methods, it is characterized in that,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that described receiving device quantizes specifically comprises:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that described receiving device quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

6. as claim 1 or 4 described methods, it is characterized in that, described receiving device returns the sequence number of the pairing quantized value of each described characteristic parameter to the pairing transmitting terminal of described receiving device, so that described transmitting terminal obtains corresponding channel information, is specially:

Be provided with pairing codomain information of each identical characteristic parameter and quantized value set information in described transmitting terminal and the described receiving device;

Described transmitting terminal is determined corresponding quantized value according to the sequence number of described receiving device feedback;

Described transmitting terminal generates the individual features parameter according to described quantized value, and reduces corresponding unitary matrix, obtains corresponding channel information.

7. a receiving device is applied to comprise in the system of at least one receiving device and a plurality of transmitting terminals, it is characterized in that, comprising:

Pretreatment module is used for obtaining the pairing channel matrix of described transmitting terminal according to the signal that at least one transmitting terminal sent that receives, and decomposes described channel matrix and obtain unitary matrix to be feedback;

Determination module is connected with described pretreatment module, is used for determining the pairing a plurality of characteristic parameters of the resulting unitary matrix of described pretreatment module;

Quantization modules is connected with described determination module, is used for the codomain according to determined each characteristic parameter of described determination module, each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter;

Feedback module is connected with described quantization modules, is used for the sequence number of the pairing quantized value of resulting each characteristic parameter of described quantization modules is fed back to the pairing transmitting terminal of described receiving device, so that described transmitting terminal obtains corresponding channel information.

8. receiving device as claimed in claim 7 is characterized in that,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described determination module, comprises when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback at least:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix is other unitary matrixs in current a plurality of unitary matrix to be feedback, in the pairing a plurality of characteristic parameters of the determined described unitary matrix of described determination module, comprise at least:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix;

Wherein, when current when having a plurality of unitary matrix to be feedback,

Described benchmark unitary matrix is specially in described a plurality of unitary matrix to be feedback according to the default selected unitary matrix of selective rule;

Described other unitary matrixs are specially any one unitary matrix except that described benchmark unitary matrix in described a plurality of unitary matrix to be feedback.

9. receiving device as claimed in claim 7 is characterized in that, described quantization modules is according to the codomain of each described characteristic parameter, and each described characteristic parameter is quantized to obtain the sequence number of the pairing quantized value of each described characteristic parameter, is specially:

Described quantization modules is carried out n bit to the codomain of each described characteristic parameter and is quantized, and obtains the quantized value set, the corresponding different respectively sequence number of each quantized value in the described quantized value set;

Described quantization modules is determined the immediate quantized value of the value of described characteristic parameter, and gets access to the pairing sequence number of described quantized value.

10. receiving device as claimed in claim 8 or 9 is characterized in that,

When described unitary matrix is current unique unitary matrix to be feedback, or described unitary matrix is when being benchmark unitary matrix in current a plurality of unitary matrix to be feedback, and the characteristic parameter that described quantization modules quantizes specifically comprises:

The argument value of first element of first row in the described unitary matrix;

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The argument value of first element of secondary series in the described unitary matrix;

Or,

When described unitary matrix was other unitary matrixs in current a plurality of unitary matrix to be feedback, the characteristic parameter that described quantization modules quantizes specifically comprised:

The pairing anticosine value of mould of first element of first row in the described unitary matrix;

Difference in the described unitary matrix between the argument of the argument of second element of first row and first element;

The difference of the argument value of first element of first row in the argument value of first element of first row and the described benchmark unitary matrix in the described unitary matrix;

The difference of the argument value of first element of secondary series in the argument value of first element of secondary series and the described benchmark unitary matrix in the described unitary matrix.

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