CN103095422A - Method and device of data demodulation - Google Patents

Method and device of data demodulation Download PDF

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CN103095422A
CN103095422A CN201110348252XA CN201110348252A CN103095422A CN 103095422 A CN103095422 A CN 103095422A CN 201110348252X A CN201110348252X A CN 201110348252XA CN 201110348252 A CN201110348252 A CN 201110348252A CN 103095422 A CN103095422 A CN 103095422A
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data
interference cancellation
matrix
noise jamming
weight
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CN103095422B (en
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王宁
杨晓辉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention discloses a method and a device of data demodulation, and relates to the technical field of communication. The method and the device of the data demodulation are capable of obtaining a weighting factor again and conduct the data demodulation by using the new weighting factor. The method of the data demodulation comprises the following steps: obtaining a first weighting factor according to received data; processing the received data according to the first weighting factor and obtaining first data; carrying out demodulation for data before interference cancellation for the first data and obtaining demodulation data before the interference cancellation; after carrying out interference cancellation for the demodulation data before the interference cancellation, obtaining a second noise interference matrix according to efficiency of the interference cancellation or according to total energy of receiving bandwidth, and obtaining a second weighting factor according to a second noise interference matrix; processing the data processed after the interference cancellation according to the second weight factor and obtaining second data, wherein the data processed after the interference cancellation is the data which is obtained after the first data is processed by the interference cancellation; and carrying out data demodulation after the second data are processed interference cancellation. According to the method and the device of the data demodulation, data demodulation performance after the interference cancellation can be improved.

Description

Data demodulation method and device
Technical field
The present invention relates to communication technical field, relate in particular to a kind of data demodulation method and device.
Background technology
WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) be widely used in moving communicating field as a kind of 3G (Third Generation) Moblie standard, compare with traditional mobile communication system, interference is to affect one of subject matter of WCDMA systematic function.For solving interference problem, introduce IC (Interference Cancellation in physical layer, the interference elimination), GRAKE receiver (Generalized RAKE Receiver, generalized RAKE receiver) etc. technology is eliminated and is disturbed between inter-user interference and footpath, for example: with respect to normal signal, offset those and have more strongly disturbing high reject signal, for high reject signal, disturb by eliminating between its footpath by the mode of footpath add-back, thereby improve demodulation performance.
Yet the inventor finds that in prior art, there are the following problems at least:
Adopt simultaneously the user of IC technology and GRAKE technology, eliminate between self footpath by the mode of symbol level add-back and disturb.In the interference cancellation process, the data demodulates performance after interference cancellation is worse than the data demodulates performance before interference cancellation.
Summary of the invention
Embodiments of the invention provide a kind of data demodulation method and device, can improve the data demodulates performance after interference cancellation.
On the one hand, provide a kind of data demodulation method, having comprised:
According to data acquisition the first noise jamming matrix that receives, and obtain the first weight according to described the first noise jamming matrix;
According to described the first weight, the described data that receive are processed, obtained the first data, wherein, the described processing comprises merging decoding;
Described the first data are carried out data demodulates before interference cancellation, obtain the demodulating data before interference cancellation;
After the demodulating data before described interference cancellation is carried out interference cancellation, obtain the second noise jamming matrix according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, and obtain the second weight according to described the second noise jamming matrix;
Data according to described the second weight after to interference cancellation are processed, and obtain the second data, the data after described interference cancellation be described the first data through the resulting data of interference cancellation, wherein, the described processing comprises merging decoding;
Described the second data are carried out data demodulates after interference cancellation.
On the other hand, provide a kind of data demodulating device, having comprised:
The first acquisition module is used for according to data acquisition the first noise jamming matrix that receives, and obtains the first weight according to described the first noise jamming matrix;
The first processing module is used for according to described the first weight, the described data that receive being processed, and obtains the first data, and wherein, the described processing comprises merging decoding;
The first demodulation module is used for described the first data are carried out data demodulates before interference cancellation, obtains the demodulating data before interference cancellation;
The second acquisition module, be used for after the demodulating data before described interference cancellation is carried out interference cancellation, according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, obtain the second noise jamming matrix, and obtain the second weight according to described the second noise jamming matrix;
The second processing module, be used for according to described the second weight the data after to interference cancellation and process, obtain the second data, the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation, wherein, the described processing comprises merging decoding;
The second demodulation module is used for described the second data are carried out data demodulates after interference cancellation.
The data demodulation method that embodiments of the invention provide and device obtain weight again after each interference cancellation, use the data demodulates after new weight carries out interference cancellation, can promote the data demodulates performance.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, the below will do to introduce simply to the accompanying drawing of required use in embodiment, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of a kind of data demodulation method that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the another kind of data demodulation method that Fig. 2 provides for the embodiment of the present invention;
The flow chart of the instantiation of a kind of data demodulation method that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of data demodulating device that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the another kind of data demodulating device that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
The embodiment of the present invention provides a kind of data demodulation method, and as shown in Figure 1, the method comprises:
Step 101 according to data acquisition the first noise jamming matrix that receives, and is obtained the first weight according to described the first noise jamming matrix.
Concrete, in the present embodiment, data processing equipment in the base station can be according to the data that receive and the corresponding channel of this data, obtain obtaining the first required relevant parameter of noise jamming matrix, according to these parameter acquiring the first noise jamming matrixes, then obtain the first weight according to the first noise jamming matrix.Wherein, the data processing equipment in this base station has comprised interference cancellation, has merged decoding, etc. the data demodulates function.
Step 102 is processed the described data that receive according to described the first weight, obtains the first data, and wherein, the described processing comprises merging decoding.
Concrete, in the present embodiment, the data processing equipment in the base station is processed the data that receive according to the first weight, thereby obtains the first data.Wherein, the mode of data processing can be to merge decoding.
Step 103 is carried out data demodulates before interference cancellation to described the first data, obtains the demodulating data before interference cancellation.
Concrete, in the present embodiment, the data processing equipment in the base station carries out data demodulates before interference cancellation to described the first data, and wherein, the mode of data demodulates can be data reconstruction.
Step 104 is carried out interference cancellation to the demodulating data before described interference cancellation, obtains the data after interference cancellation.
Be understandable that, interference cancellation herein can adopt mode of the prior art to carry out interference cancellation, and for example: the demodulating data of the data processing equipment in the base station before to interference cancellation adopts the mode by the footpath add-back to offset between footpath in data and disturb.The embodiment of the present invention is not done restriction to this.
Step 105 after the demodulating data before described interference cancellation is carried out interference cancellation, according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, is obtained the second noise jamming matrix, and is obtained the second weight according to described the second noise jamming matrix.
Wherein, the mode of obtaining the second noise jamming matrix and the second weight please refer to the detailed description of back embodiment.
Step 106, the data according to described the second weight after to interference cancellation are processed, and obtain the second data, and wherein, the described processing comprises merging decoding.
Concrete, in the present embodiment, the data processing equipment in the base station according to the second weight the data after to interference cancellation process, thereby obtain the second data.Wherein, the mode of data processing can be to merge decoding.
Step 107 is carried out data demodulates after interference cancellation to described the second data.
Be understandable that, data demodulates herein can adopt demodulation mode of the prior art to carry out demodulation, and for example: the data processing equipment in the base station carries out data reconstruction to the second data, obtains antenna stream sampling point level reconstruct data.The embodiment of the present invention is not done restriction to this.
The data demodulation method that the embodiment of the present invention provides obtains new weight after interference cancellation, and uses the data demodulates after new weight carries out interference cancellation.Compared with prior art, the embodiment of the present invention can be obtained new weight after each interference cancellation, and uses the demodulation after new weight carries out interference cancellation, thereby promotes the data demodulates performance.
The embodiment of the present invention provides a kind of data demodulation method, and as shown in Figure 2, the method can comprise:
Step 201 according to data acquisition the first noise jamming matrix that receives, and is obtained the first weight according to described the first noise jamming matrix.
Wherein, the method for obtaining described the first noise jamming matrix and described the first weight is:
w R uu - 1 h
R wherein uuBe the first noise jamming matrix, W is the first weight, and h represents the channel fading factor,
Method according to data acquisition the first noise jamming matrix that receives:
R uu＝(E O+E I)R MUI+N OR n′
Wherein, R uuRepresent the first noise jamming matrix, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar.Wherein, obtain E O, E I, N O, R MUI, R n′, h method be well known to those skilled in the art, do not repeat them here.
Concrete, in the present embodiment, as shown in Figure 3, data processing equipment in the base station by antenna reception after data, data being carried out the data on basis processes, obtain obtaining the first required relevant parameter of noise jamming matrix, according to these parameter acquiring the first noise jamming matrixes, then obtain the first weight according to the first noise jamming matrix.Wherein, the mode of basic data processing comprises the separation of Multipath searching multipath, descrambling and de-spreading, the estimation of mid-frequency noise energy etc., and the data processing equipment in this base station has comprised interference cancellation, merged decoding, etc. the data demodulates function.
Data processing equipment in the base station by antenna reception to every data its corresponding channel is arranged, the corresponding channel of data is estimated, obtain fading factor, and carry out weights according to this fading factor and ask for, obtain the first weight.In this process, also got the fading factor with empty footpath simultaneously.
Step 202 is processed the described data that receive according to described the first weight, obtains the first data, and wherein, the described processing comprises merging decoding.
Wherein, can merge decoding to the described data that receive according to the first weight, thereby obtain the first data.
Concrete, in the present embodiment, as shown in Figure 3, the data processing equipment in the base station merges decoding according to the first weight to the data that receive and process through the data on basis by the Grake receiver, thereby obtains the first data.
Simultaneously, the data processing equipment in the base station carries out deconvolution to fading factor and processes the fading factor obtain after deconvolution.
Step 203 is carried out data demodulates before interference cancellation to described the first data, obtains the demodulating data before interference cancellation.
Concrete, in the present embodiment, as shown in Figure 3, the fading factor of the data processing equipment in the base station after according to deconvolution carries out data reconstruction to the first data, obtains antenna stream sampling point level reconstruct data.Simultaneously, the data processing equipment in the base station carries out several data reconstructions of symbol level footpath to the fading factor with empty footpath, obtains several data of symbol level footpath.
So far, the data demodulates before interference cancellation is completed.
Method and flow process that above step 201 is processed to the concrete data of step 203 are well known to those skilled in the art, and therefore not to repeat here.
Obtain the second noise jamming matrix, and the method for obtaining the second weight according to described the second noise jamming matrix can comprise:
One:
Step 2041 according to described the first data, is obtained the efficient of described interference cancellation.
Concrete, in the present embodiment, the data processing equipment in the base station can according to antenna stream sampling point level reconstruct data, obtain interference cancellation efficient.
Step 2042 is obtained the second noise jamming matrix according to described interference cancellation efficient, and obtains described the second weight according to described the second noise jamming matrix.
Concrete, in the present embodiment, the method for obtaining described the second noise jamming matrix and described the second weight is:
W ' = R ' uu - 1 h
R ' wherein uuBe the second noise jamming matrix, W ' is the second weight, and h represents the channel fading factor
Wherein, can obtain in the following manner the second noise jamming matrix:
R ' uu = ( 1 - ∂ ) * ( E 0 + E I ) R MUI + N 0 R n ′
Wherein obtained the efficient of interference cancellation by step 2041
Figure BDA0000106125100000073
E O, E IThe energy that represents respectively this code channel and other code channels, N OBe one-sided power spectrum density, R MUIExpression multiple access interference matrix, R n′The expression end correlation function matrix of making an uproar.Wherein, obtain E O, E I, N O, R MUI, R n′, h method be well known to those skilled in the art, do not repeat them here.
Its two:
Reception bandwidth gross energy before step 2043, measurements interference offset.
Concrete, in the present embodiment, as shown in Figure 3, the data processing equipment in the base station carries out the mid-frequency noise energy to the data that receive to be estimated, obtains the front reception bandwidth gross energy RTWP of interference cancellation 1
Step 2044, the reception bandwidth gross energy after measurements interference offsets.
Concrete, in the present embodiment, as shown in Figure 3, the data of the data processing equipment in the base station after to interference cancellation are carried out the mid-frequency noise energy and are estimated, obtain the reception bandwidth gross energy RTWP after interference cancellation 2
Step 2045 according to the reception bandwidth gross energy after described interference cancellation and the reception bandwidth gross energy before described interference cancellation, is obtained the second noise jamming matrix.
Wherein, the efficient of interference cancellation can be expressed as reception bandwidth gross energy that interference cancellation falls and the ratio of the reception bandwidth gross energy before described interference cancellation, and the reception bandwidth gross energy that described interference cancellation falls is reception bandwidth gross energy before described interference cancellation and the difference of the reception bandwidth gross energy after described interference cancellation.
Concrete, in the present embodiment, obtain the efficient of interference cancellation
Figure BDA0000106125100000081
Method be:
∂ = ( RTWP 1 - RTWP 2 ) / RTWP 1
Wherein, the acquisition methods of the second noise jamming matrix can for:
R ' uu = ( 1 - ∂ ) * ( E 0 + E I ) R MUI + N 0 R n ′
Wherein the efficient of interference cancellation is E O, E IThe energy that represents respectively this code channel and other code channels, N OBe one-sided power spectrum density, R MUIExpression multiple access interference matrix, R n′The expression end correlation function matrix of making an uproar.Wherein, obtain E O, E I, N O, R MUI, R n′Method be known in the art, do not repeat them here.
For example, the reception bandwidth gross energy that interference cancellation falls is x, wherein, and the reception bandwidth gross energy y before x=RTWP1-RTWP2, interference cancellation, wherein, y=RTWP1, the efficient of interference cancellation is: ∂ = ( x / y ) * 100 %
The second noise jamming matrix is: R ' uu=[1-(x/y) * 100%] * (E O+ E I) R MUI+ N OR n′, the second weight is:
Further, the efficient of interference cancellation is:
Figure BDA0000106125100000092
The acquisition methods of the second noise jamming matrix can direct representation be:
R ' uu = ( RTWP 2 RTWP 1 ) * ( E 0 + E I ) R MUI + N 0 R n ′
In sum, can according to the reception bandwidth gross energy before interference cancellation and the reception bandwidth gross energy after interference cancellation, obtain the second noise jamming matrix.
Step 2046 is obtained the second weight according to described the second noise jamming matrix.
Concrete, in the present embodiment, the method for obtaining described the second noise jamming matrix and described the second weight is:
W ' = R ' uu - 1 h
R ' wherein uuBe the second noise jamming matrix, W ' is the second weight, and h represents the channel fading factor
Step 205, the data according to described the second weight after to interference cancellation are processed, and obtain the second data.
Wherein, the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation.
Further, described according to described the second weight the data after to interference cancellation process, obtain the second data and be: the data according to described the second weight after to described interference cancellation merge decoding, thereby obtain the second data.
Concrete, in the present embodiment, as shown in Figure 3, data processing equipment in the base station to interference cancellation after data carry out basic data processing, and by Grake according to the second weight after to symbol level several reconstruct data of footpath and interference cancellation and merge decoding through the data of basic data processing, thereby obtain the second data.
Step 206 is carried out data demodulates after interference cancellation to described the second data.
The data demodulation method that the embodiment of the present invention provides obtains new weight after interference cancellation, and uses the data demodulates after new weight carries out interference cancellation.Compared with prior art, the embodiment of the present invention can be obtained new weight after each interference cancellation, and uses the demodulation after new weight carries out interference cancellation, promotes the data demodulates performance.
The embodiment of the present invention provides a kind of data demodulating device, and as shown in Figure 4, this device comprises: the first acquisition module 401, the first processing module 402, the first demodulation module 403, the second acquisition module 404, the second processing module 405, the second demodulation module 406.
The first acquisition module 401 is used for according to data acquisition the first noise jamming matrix that receives, and obtains the first weight according to described the first noise jamming matrix.
The first processing module 402 is used for according to described the first weight, the described data that receive being processed, and obtains the first data.
Wherein, the mode of data processing comprises merging decoding.
The first demodulation module 403 is used for described the first data are carried out data demodulates before interference cancellation, obtains the demodulating data before interference cancellation.
The second acquisition module 404, be used for after the demodulating data before described interference cancellation is carried out interference cancellation, according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, obtain the second noise jamming matrix, and obtain the second weight according to described the second noise jamming matrix.
The second processing module 405 is used for according to described the second weight the data after to interference cancellation and processes, and obtains the second data, and the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation.
Wherein, the mode of data processing comprises merging decoding.
Wherein, the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation.
The second demodulation module 406 is used for described the second data are carried out data demodulates after interference cancellation.
The data demodulating device that the embodiment of the present invention provides can be obtained new weight after interference cancellation, and uses the data demodulates after new weight carries out interference cancellation.Compared with prior art, the embodiment of the present invention can be obtained new weight after each interference cancellation, and uses the demodulation after new weight carries out interference cancellation, promotes the data demodulates performance.
The embodiment of the present invention provides a kind of data demodulating device, and as shown in Figure 5, this device comprises: the first acquisition module 401, the first processing module 402, the first demodulation module 403, the second acquisition module 404, the second processing module 405, the second demodulation module 406.Wherein, the second acquisition module 404 comprises: the first acquiring unit 4041, second acquisition unit 4042, the first measuring unit 4043, the second measuring unit 4044, the 3rd acquiring unit 4045, the 4th acquiring unit 4046.
The first acquisition module 401 is used for according to data acquisition the first noise jamming matrix that receives, and obtains the first weight according to described the first noise jamming matrix.
Wherein, according to data acquisition the first noise jamming matrix that receives be: according to the described data that receive, obtain described the first noise jamming matrix, be specially: R uu=(E O+ E I) R MUI+ N OR n′, wherein, R uuRepresent the first noise jamming matrix, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar.
The first processing module 402 is used for according to described the first weight, the described data that receive being processed, and obtains the first data.
Wherein, the mode of data processing comprises merging decoding.
The first demodulation module 403 is used for described the first data are carried out data demodulates before interference cancellation, obtains the demodulating data before interference cancellation.
The second acquisition module 404, be used for after the demodulating data before described interference cancellation is carried out interference cancellation, according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, obtain the second noise jamming matrix, and obtain the second weight according to described the second noise jamming matrix.
Wherein, described the second acquisition module comprises:
The first acquiring unit 4041 is used for according to described the first data, obtains the efficient of described interference cancellation.
Second acquisition unit 4042 is used for the efficient according to described interference cancellation, obtains described the second noise jamming matrix, and obtains the second weight according to described the second noise jamming matrix.
Wherein, according to the efficient of described interference cancellation, obtain described the second noise jamming matrix, be specially: R ' uu = ( 1 - ∂ ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix,
Figure BDA0000106125100000122
The efficient of expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar.
Further, described the second acquisition module comprises:
The first measuring unit 4043 is used for the reception bandwidth gross energy before measurements interference offsets.
The second measuring unit 4044 is used for the reception bandwidth gross energy after measurements interference offsets.
The 3rd acquiring unit 4045 is used for according to the reception bandwidth gross energy after described interference cancellation and the reception bandwidth gross energy before described interference cancellation, obtains described the second noise jamming matrix, and obtains the second weight according to described the second noise jamming matrix.
Wherein, according to the reception bandwidth gross energy after described interference cancellation and the reception bandwidth gross energy before described interference cancellation, obtain described the second noise jamming matrix, be specially: R ' uu = ( RTWP 2 RTWP 1 ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix, RTWP 1Reception bandwidth gross energy before the expression interference cancellation, RTWP 2Reception bandwidth gross energy after the expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar, and obtain the second weight according to described the second noise jamming matrix.
Further, in the second acquisition module 404, according to the noise jamming matrix, obtain weight, be specially: Wherein, W ' represents weight, and h represents the channel fading factor, and described noise jamming matrix comprises the first noise jamming matrix, the second noise jamming matrix, and described weight comprises the first weight, the second weight.
The second processing module 405 is used for according to described the second weight the data after to interference cancellation and processes, and obtains the second data.
Wherein, the mode of data processing comprises merging decoding.
Wherein, the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation.
Acting as of described the second processing module: the data according to described the second weight after to described interference cancellation merge decoding, thereby obtain the second data.
The second demodulation module 406 is used for described the second data are carried out data demodulates after interference cancellation.
The data demodulating device that the embodiment of the present invention provides can be obtained new weight after interference cancellation, and uses the data demodulates after new weight carries out interference cancellation.Compared with prior art, the embodiment of the present invention can be obtained new weight after each interference cancellation, and uses the demodulation after new weight carries out interference cancellation, promotes the data demodulates performance.
Need to prove, the data demodulating device in above embodiment is used for realizing the data demodulation method of Fig. 1 to Fig. 2 embodiment, and the function of its modules and implementation be the associated description in reference method embodiment further.
Further, the data demodulating device in above-described embodiment can be included in all equipment that have simultaneously the elimination disturbed and generalized RAKE receiver, such as: mobile terminal, wireless routing device, base station etc.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment device, to come the relevant hardware of instruction to complete by computer program, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each device when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.

Claims (10)

1. a data demodulation method, is characterized in that, comprising:
According to data acquisition the first noise jamming matrix that receives, and obtain the first weight according to described the first noise jamming matrix;
According to described the first weight, the described data that receive are processed, obtained the first data, wherein, the described processing comprises merging decoding;
Described the first data are carried out data demodulates before interference cancellation, obtain the demodulating data before interference cancellation;
After the demodulating data before described interference cancellation is carried out interference cancellation, obtain the second noise jamming matrix according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, and obtain the second weight according to described the second noise jamming matrix;
Data according to described the second weight after to interference cancellation are processed, and obtain the second data, the data after described interference cancellation be described the first data through the resulting data of interference cancellation, wherein, the described processing comprises merging decoding;
Described the second data are carried out data demodulates after interference cancellation.
2. data demodulation method according to claim 1, is characterized in that, data acquisition the first noise jamming matrix that described basis receives is: R uu=(E O+ E I) R MUI+ N OR n′, wherein, R uuRepresent the first noise jamming matrix, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar;
Describedly obtain the first weight according to described the first noise jamming matrix and comprise:
Figure FDA0000106125090000011
W represents the first weight, and h represents the channel fading factor.
3. data demodulation method according to claim 1, is characterized in that, described efficient according to interference cancellation is obtained the second noise jamming matrix and comprised:
According to described the first data, obtain the efficient of described interference cancellation;
According to the efficient of described interference cancellation, obtain described the second noise jamming matrix, the described second noise jamming matrix that obtains comprises: R ' uu = ( 1 - ∂ ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix, The efficient of expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar.
4. data demodulation method according to claim 1, is characterized in that, describedly obtains the second noise jamming matrix and comprise according to receiving the bandwidth gross energy:
Reception bandwidth gross energy before measurements interference offsets;
Reception bandwidth gross energy after measurements interference offsets;
According to the reception bandwidth gross energy after described interference cancellation and the reception bandwidth gross energy before described interference cancellation, obtain described the second noise jamming matrix, be specially:
R ' uu = ( RTWP 2 RTWP 1 ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix, RTWP 1Reception bandwidth gross energy before the expression interference cancellation, RTWP 2Reception bandwidth gross energy after the expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, expression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar, and obtain the second weight according to described the second noise jamming matrix.
5. according to claim 3 or 4 described data demodulation methods, is characterized in that, obtains the second weight according to described the second noise jamming matrix and comprise:
Figure FDA0000106125090000024
W ' represents the second weight, and h represents the channel fading factor.
6. a data demodulating device, is characterized in that, comprising:
The first acquisition module is used for according to data acquisition the first noise jamming matrix that receives, and obtains the first weight according to described the first noise jamming matrix;
The first processing module is used for according to described the first weight, the described data that receive being processed, and obtains the first data, and wherein, the described processing comprises merging decoding;
The first demodulation module is used for described the first data are carried out data demodulates before interference cancellation, obtains the demodulating data before interference cancellation;
The second acquisition module, be used for after the demodulating data before described interference cancellation is carried out interference cancellation, according to the efficient of interference cancellation or according to receiving the bandwidth gross energy, obtain the second noise jamming matrix, and obtain the second weight according to described the second noise jamming matrix;
The second processing module, be used for according to described the second weight the data after to interference cancellation and process, obtain the second data, the data after described interference cancellation are that described the first data are through the resulting data of interference cancellation, wherein, the described processing comprises merging decoding;
The second demodulation module is used for described the second data are carried out data demodulates after interference cancellation.
7. data demodulating device according to claim 6, is characterized in that, described the first acquisition module is according to R uu=(E O+ E I) R MUI+ N OR n′Obtain the first noise jamming matrix, wherein, R uuRepresent the first noise jamming matrix, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar;
Described the first acquisition module obtains the first weight and comprises according to described the first noise jamming matrix: W represents the first weight, and h represents the channel fading factor.
8. data demodulating device according to claim 6, is characterized in that, described the second acquisition module comprises:
The first acquiring unit is used for according to described the first data, obtains the efficient of described interference cancellation;
Second acquisition unit is used for the efficient according to described interference cancellation, obtains described the second noise jamming matrix, is specially:
R ' uu = ( 1 - ∂ ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix,
Figure FDA0000106125090000041
The efficient of expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar;
Described the second acquisition module obtains the second weight and comprises according to described the second noise jamming matrix: W ' represents the second weight, and h represents the channel fading factor.
9. data demodulating device according to claim 6, is characterized in that, described the second acquisition module comprises:
The first measuring unit is used for the reception bandwidth gross energy before measurements interference offsets;
The second measuring unit is used for the reception bandwidth gross energy after measurements interference offsets;
The 3rd acquiring unit is used for according to the reception bandwidth gross energy after described interference cancellation and the reception bandwidth gross energy before described interference cancellation, obtains described the second noise jamming matrix, is specially: R ' uu = ( RTWP 2 RTWP 1 ) * ( E 0 + E I ) R MUI + N 0 R n ′ , Wherein, R ' uuRepresent the second noise jamming matrix, RTWP 1Reception bandwidth gross energy before the expression interference cancellation, RTWP 2Reception bandwidth gross energy after the expression interference cancellation, E ORepresent this code channel energy, E IThe energy that represents other code channels, R MUIExpression multiple access interference matrix, N OExpression one-sided power spectrum density, R n′The expression end correlation function matrix of making an uproar;
Described the second acquisition module obtains the second weight and comprises according to described the second noise jamming matrix:
Figure FDA0000106125090000044
W ' represents the second weight, and h represents the channel fading factor.
10. the described data demodulating device of according to claim 6 to 9 any one, is characterized in that, described device is included in base station or mobile terminal.
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