CN101510813B - Method for transmitting and processing data of communication system, communication system and communication equipment - Google Patents
Method for transmitting and processing data of communication system, communication system and communication equipment Download PDFInfo
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- CN101510813B CN101510813B CN2008100577672A CN200810057767A CN101510813B CN 101510813 B CN101510813 B CN 101510813B CN 2008100577672 A CN2008100577672 A CN 2008100577672A CN 200810057767 A CN200810057767 A CN 200810057767A CN 101510813 B CN101510813 B CN 101510813B
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Abstract
The invention discloses a method for sending data in a communication system. The method comprises the steps: the corresponding branch of a terminal in a code is determined according to the corresponding relationship between the terminal and the branch in the code; the terminal carries out coding to a data string to be sent according to the weighting coefficient of the branch; and the terminal sends the coded data string. Through the method, the problem of relatively low transmission reliability caused by channel interference among users is avoided and the reliability of multi-user MIMO transmission process is improved. The invention also discloses a method for processing data in a communication system during the uplink transmission process, a communication system and a communication device thereof as well as a method for sending data and processing data in a communication system during the downlink transmission process, a communication system and a communication device thereof.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of in communication system the transmission, deal with data method, communication system and communication equipment.
Background technology
In the wireless communication system; All possibly there are a plurality of users at transmitter side or receiver side; For each user distributes an antenna; The antenna that the user utilizes self sends data simultaneously or receives data in same frequency range, on different spatial domains, identical time-domain signal is handled, and improves the efficient of transfer of data in capacity and the communication process of communication channel with this.This same running time-frequency resource is shared by a plurality of users, the transmission means that the multi-user data that walks abreast sends just be referred to as the multi-user many input and output (Multi Input MultiOutput, MIMO).
In the uplink that realizes multiuser MIMO, after data were sent at a plurality of terminals, the base station was to distinguish each user data according to the data transmission channel of different terminal.In the downlink transfer of multiuser MIMO, the base station issues multichannel data simultaneously, and the different channels that the terminal takies when transmitting according to different pieces of information is equally confirmed the data that send to this terminal the base station.Hence one can see that, and the correlation of the interchannel of the data occupancy of transmission is little, could guarantee that receiver side can correctly discern the data of different user, improves reliability of data transmission.But; In the transmission course of reality; Be difficult to meet the demands (as: distance between a plurality of terminals of transmitter side is to be difficult to confirm) as the channel relevancy between the multichannel data that sends, cause the interchannel serious interference, reduced reliability of data transmission and efficiency of transmission.
Summary of the invention
The embodiment of the invention provides a kind of to be transmitted in communication system, method, communication system and the communication equipment of deal with data; Distinguish the user data difficulty to solve the receiver side that exists in the prior art according to the channel of transfer of data, reduced the problem of reliability of data transmission and efficiency of transmission.
A kind of method of in communication system, sending data, this method comprises:
According to the terminal and in coding the corresponding relation between the branch road, confirm terminal corresponding branch road in coding;
According to the weight coefficient of said branch road, encode to sent serial data in said terminal;
The serial data behind the coding is sent at said terminal.
A kind of in communication system the method for data processing, said method comprises:
Receive the serial data that send at least one terminal, and the said serial data that receives is carried out decode operation;
According to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, determine the terminal of said serial data under respectively.
A kind of method of in communication system, sending data, this method comprises:
According to the terminal and in coding the corresponding relation between the branch road, each terminal that confirm to receive serial data corresponding branch road in coding;
According to the weight coefficient of said branch road, the serial data to be sent that belongs to this branch road counterpart terminal is encoded;
Send the serial data after encoding.
A kind of in communication system the method for data processing, said method comprises:
The terminal receives serial data, and the said serial data that receives is carried out decode operation;
According to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, confirm to belong in the decoded serial data serial data at said terminal.
A kind of terminal, this terminal comprises:
The branch road determination module is used for according to terminal and the corresponding relation between the coding branch road, confirms terminal corresponding branch road in coding at place;
Coding module is used for the weight coefficient according to the said branch road of confirming, serial data to be sent is encoded;
Sending module is used to send the serial data behind the coding.
A kind of base station, said base station comprises:
Receiver module is used to receive the serial data that send at least one terminal;
Decoder module is used for the said serial data that receives is carried out decode operation;
Terminal deciding module is used for according to terminal and the corresponding relation between the coding branch road, and the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
A kind of base station, this base station comprises:
The branch road determination module is used for according to terminal and the corresponding relation between the coding branch road, confirms the branch road of each terminal correspondence in coding of reception serial data;
Coding module is used for the weight coefficient according to the said branch road of confirming, encodes to belonging to this branch road counterpart terminal serial data to be sent;
Sending module is used to send the serial data behind the coding.
A kind of terminal, said terminal comprises:
Receiver module is used to receive serial data;
Decoder module is used for the said serial data that receives is carried out decode operation;
The serial data determination module is used for according to terminal and the corresponding relation between the coding branch road, according to the branch road at serial data place, decoding back, confirms to belong in the decoded serial data serial data at this terminal.
A kind of communication system, said system comprises:
At least one terminal is used for according to terminal and the corresponding relation between the coding branch road, confirms from corresponding branch road in coding, and according to the weight coefficient of said branch road, carries out sending behind the encoding operation to sent serial data;
The base station is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
A kind of communication system, said system comprises:
The base station; Be used for according to terminal and the corresponding relation between the coding branch road; Each terminal that confirm to receive serial data corresponding branch road in coding, and according to the weight coefficient of said branch road sends the serial data to be sent that belongs to this branch road counterpart terminal back of encoding;
At least one terminal is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, according to the branch road at serial data place, decoding back, confirms to belong in the serial data of decoding back the serial data at said terminal.
The embodiment of the invention is through the corresponding relation of terminal and the multiplexing middle branch road of superimposed coding; The serial data that when data are sent, will belong to certain terminal utilizes the weight coefficient of branch road corresponding among the OVCDM to encode; At receiver side data are carried out the OVCDM decoding; Determine the method at terminal under the data according to the branch road at decoding back data place, avoided because the lower problem of transmission reliability that channel disturbance causes between the user, improved the reliability of multiuser MIMO transmission course.
Description of drawings
Fig. 1 utilizes the multiplexing sketch map of encoding of superimposed coding;
Fig. 2 is the sketch map of cascade superimposed coding multiplexing and encoding;
Fig. 3 is the method step schematic flow sheet that sends data in the embodiment of the invention one;
The schematic flow sheet that Fig. 4 encodes to serial data for the weight coefficient that utilizes terminal corresponding branch road in superimposed coding is multiplexing in the embodiment of the invention one;
Fig. 5 is a plurality of terminal works schematic flow sheets of transmitter side in the embodiment of the invention one;
The method step schematic flow sheet of Fig. 6 in the embodiment of the invention two data that receive being handled;
Fig. 7 carries out the iterative decoding schematic flow sheet in the embodiment of the invention two to the serial data that receives;
Fig. 8 is the method step schematic flow sheet that sends data in the embodiment of the invention three;
Fig. 9 is the workflow sketch map of transmitter side base station in the embodiment of the invention three;
The method step schematic flow sheet of Figure 10 in the embodiment of the invention four data that receive being handled;
Figure 11 is the structural representation at terminal in the embodiment of the invention five;
Figure 12 is the structural representation of base station in the embodiment of the invention six;
Figure 13 is the structural representation of base station in the embodiment of the invention seven;
Figure 14 is the structural representation at terminal in the embodiment of the invention eight;
Figure 15 is the structural representation of communication system in the embodiment of the invention nine.
Embodiment
Describe the present invention in detail below in conjunction with Figure of description.
In order to realize the object of the invention, the applicant considers to utilize superimposed coding, and multiplexing (Overlapped CodeDivision Multiplexing, different coding and decoding branch roads OVCDM) are distinguished different terminal.Related OVCDM is a kind of multiplex technique of spectral efficient coding in various embodiments of the present invention; Utilize code check to be higher than 1 parallel encoding and increase substantially capacity of communication system and spectrum efficiency, utilize follow-up will being referred to as of scheme of OVCDM technology coding and decoding that serial data is carried out the OVCDM coding and decoding.
Carry out the process of OVCDM coding and decoding below in conjunction with a concrete instance explanation.
As shown in Figure 1, for carrying out the sketch map of OVCDM cataloged procedure, setting in the serial data of importing has 15 data symbols, and overlapping number of times K=3, promptly selects three data symbols to carry out series-parallel operation at every turn, may further comprise the steps:
The first step: select three data symbols in the serial data to carry out the operation of serial to parallel conversion, become the data of three-channel parallel.
Second step: the data of three-channel parallel are encoded respectively.
In this step, encoding is exactly with { b
0 0, b
0 1... b
0 L-1Respectively the data of storing in first circuit-switched data of current input and each register of first branch road are carried out weighted superposition, { b as weight coefficient
K-1 0, b
K-1 1... b
K-1 L-1As weight coefficient the data in K branch road input data and the K branch register are carried out weighted superposition, wherein: b
K-1 L-1Be the element of L coding tap coefficient vector in the K branch road parallel encoding branch road, L is the constraint length of every road coding.
The 3rd step: three-channel parallel is imported in the register 1 that data symbol is kept at each road respectively, and originally the data in the register 1 are saved in the register 2, and the data in the register 2 are saved in the register 3, by that analogy.
In register, the data number of storing in a tunnel must not surpass total register number with storage.Data of storage in each register, if t constantly each register in the first via all stored data, then at t+1 constantly, the data in L-1 register will be dropped.At initial time, the data of storing in the register are 0.
The 4th step: with data symbol stack the becoming circuit-switched data symbol behind three road codings.
In this step, the superimposed data symbol is exported after can passing through the F functional transformation, wherein: have one-to-one relationship between F function and its input.
Particularly, the definition of F function is that the data symbol is carried out conversion or mapping.Such as:
That is: after summation obtains x to three tunnel (supposing k=3) data symbol, x substitution F function is calculated, then output.F (x)=x, expression F function is a linear function, after summation obtains x to three circuit-switched data symbols, directly output, the F function does not carry out conversion to data.
Because overlapping number of times K is big more, the constraint length L of superimposed coding is long more, and the complexity of detection is big more.In order to reduce the complexity of detection; Can adopt the mode of cascade to realize the OVCDM process of high overlapping number of times K, the principle of the OVCDM of two-stage is as shown in Figure 2, wherein; The 1st grade of OVCDM1 coding can adopt non-linear OVCDM coding, and the 2nd grade of OVCDM2 coding then can adopt uniform enconding; The output of the 1st grade of OVCDM1 is as the input of the 2nd grade of OVCDM2.
The detection of OVCDM coding can be adopted the Maximum likelihood sequence detection (MLSD) based on the Viterbi algorithm, and adopts Euclidean distance as path metric.
The decode procedure of OVCDM is to be K parallel data symbol with each decoded symbol data in the serial data, said parallel data symbol is carried out and goes here and there conversion, the data symbol number that obtains behind the decode procedure for the K of number before the decoding doubly.Coding/decoding method can the Maximum likelihood sequence detection method or based on the suboptimum sequence detecting method of tree graph; Particularly, can utilize based on the positive semidefinite planning algorithm in the suboptimum sequence detecting method of tree graph and decode.
The data of each branch road are one to one when the data of each branch road that the decoding back obtains and coding; For example; Data behind the coding among Fig. 1 are decoded and can be obtained the three-channel parallel data, and the first via data of first via data when encoding are corresponding one by one, and other branch road data class seemingly.
As shown in Figure 3, for sending the method step schematic flow sheet of data in the embodiment of the invention one, in the present embodiment upstream data process of transmitting, as can be seen from the figure this method may further comprise the steps:
Step 301: the terminal is set in advance and the corresponding relation between the branch road in OVCDM.
In various embodiments of the present invention the terminal and in OVCDM between the branch road method to set up of corresponding relation include but not limited to following this mode:
When several terminals being arranged need be to the base station transmits serial data time in the sub-district, can report this incident to the base station.If the K value is 5 among the current OVCDM; After the base station receives the information that reports at 10 terminals; Select wherein 5 terminals; For setting up corresponding relation between the terminal selected and the branch road, and the corresponding relation of setting up is handed down to the terminal of selection, serial data is sent to base station synchronization in a terminal that only allows in the current communication process to select.
Step 302:, confirm the branch road of terminal correspondence in coding according to said corresponding relation.
For example: the overlapping number of times K=3 that uses when carrying out the operation of OVCDM coding and decoding, setting terminal 1 corresponding first branch road, terminal 2 corresponding second branch roads, terminal 3 corresponding the 3rd branch roads.When needs sent serial data, the branch road that self is corresponding can be confirmed according to preset corresponding relation in each terminal; Also can inquire the corresponding branch road in terminal, and inform the terminal by other entities.
In the present embodiment, concatenated coding can also be carried out to sent serial data further in the terminal, and before step 302, the OVCDM coding can be carried out to self serial data to be sent in each terminal, and the serial data behind the coding is carried out symbol interleaving.The cascade number of times that adopts can be set according to user's demand.
Step 303: according to the weight coefficient of said branch road, encode to sent serial data in said terminal.
In this step concrete coded system can for: from said serial data, select one successively and do not carry out the coded data symbol, the weight coefficient that utilizes said branch road carries out operation for weighting to one or more data symbols of in this serial data, having selected before the data symbol of this selection and this selection; Data symbol after the weighting is superposed to a data symbol behind the coding.After each data symbol carries out encoding operation in the serial data, the serial data after obtaining to encode.
When from serial data, selecting coded identification for the first time, there is not this to select preceding data symbol, therefore utilize the weight coefficient of said branch road only the data symbol of this selection to be carried out encoding operation.These one or more data symbols of in this serial data, having selected before selecting can be the data symbols that is buffered in the register.
Cataloged procedure with the 1 pair first branch road serial data in terminal is that example is described the scheme that the weight coefficient in the branch road is encoded to serial data among the OVCDM that utilizes the terminal correspondence below, and the flow chart of this scheme is as shown in Figure 4.
Steps A: judge in the serial data to be sent of terminal 1 whether also have the data symbol that does not carry out encoding operation, if do not exist, then cataloged procedure finishes; Otherwise execution in step B.
Step B: in the said data symbol of encoding, select one, respectively data in buffer symbol in the data symbol of current selection in the steps A and first branch register is carried out operation for weighting, the weight coefficient of use is the weight coefficient in this branch road.
Step C: the data symbol after the weighting is superposed to a data symbol behind the coding.
Step D: the data symbol of selecting is stored in the register of first branch road, and returns steps A.
Circulate with this, until with the total data encoding symbols in the first branch road serial data, the arrangement of data symbols behind the coding is obtained the serial data behind the coding.
Step 304: the serial data after will encoding is through the antenna transmission at terminal self.
It is as shown in Figure 5 that the sketch map that sends the back is handled to data in a plurality of terminals.
Through the description of embodiment one, a plurality of terminals are distinguished its own transmission data respectively according to the branch road in the coding, avoided the problem of channel disturbance between the terminal.
Described in the embodiment of the invention two a kind of in communication system the method for data processing, this method can be on the basis of embodiment one, the processing that carry out the data that receive the base station also can be that the data of sending through additive method are handled.As shown in Figure 6, this scheme may further comprise the steps:
Step 601: antenna for base station receives the serial data that send at least one terminal.
In the present embodiment, serial data must be to arrive the antenna for base station place synchronously, and the base station can synchronously be handled the data that receive.
Because the serial data that send at the terminal is respectively through different channel bearings; In transmission course, there is channel fading; Therefore to carry out weighting to the serial data of this channel bearing according to different channel fading coefficients; And the multichannel data string after the weighting is superposed to a circuit-switched data string, concrete stacked system can be the additive process in the 4th step in the scheme described of Fig. 1.
Step 602: the base station is carried out the OVCDM decode operation according to the channel estimating parameter to the said serial data that receives.
For example: transmitter side has sent three circuit-switched data strings, and every circuit-switched data string has 8 data symbols, this three circuit-switched data string stack back is obtained the serial data of 8 data symbols of one tunnel existence.The process of decoding to the superimposed data string that receives in the base station is following:
Utilizing the channel estimating parameter and the weight coefficient of place branch road, is three parallel data symbols through the Maximum likelihood sequence detection method with each decoded symbol data, obtains three tunnel (8 the data symbols in every road) serial data.
In addition, in step 602, the operation of interference delete between a plurality of space antennas can also be carried out to the serial data that receives according to the channel estimating parameter before decoding in the base station, when decoding, can no longer utilize the channel estimating parameter thereafter.
Step 603: according to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, determine the terminal of said serial data under respectively.
Suppose that the serial data that send at terminal 1, terminal 2 and terminal 3 has passed through respectively after OVCDM1, OVCDM2 and the OVCDM3 coding; Utilize among the OVCDM4 first and second and the three branch roads back of encoding to send again respectively; Iterative decoding can be carried out to the serial data that receives in the base station; As shown in Figure 7, idiographic flow is following:
At first; Serial data to input utilizes among the OVCDM4 first and second and three branch roads to decode respectively; Three circuit-switched data strings to the back output of decoding carry out the symbolic solution interlace operation respectively, and three circuit-switched data strings after the deinterleaving are carried out OVCDM1, OVCDM2 and OVCDM3 decoding respectively.
Then, OVCDM1, OVCDM2 and OVCDM3 decoding back dateout string are adjudicated, judge whether the performances such as precision of data symbol in the serial data of exporting meet the demands,, then accomplish iteration one time if satisfy; Otherwise, also need carry out next iteration.
In next iteration; After serial data carries out OVCDM1, OVCDM2 and OVCDM3 decoding respectively; To OVCDM4 feedback external information, concrete operations are: after passing through symbol interleaving respectively through the external information of OVCDM1, OVCDM2 and OVCDM3 output, as three feedback informations of OVCDM4.OVCDM4 decodes to the input serial data according to the external information of feedback once more, accomplishes iteration for the second time.In order to improve decoding performance, can carry out repeatedly iteration.
Through the description of embodiment two, the affiliated respectively terminal of this serial data is distinguished according to the branch road at each serial data place, decoding back in the base station, has realized multi-user's MIMO transmission.
As shown in Figure 8, in downlink transmission process in the embodiment of the invention three, send the workflow of data, may further comprise the steps:
Step 801: terminal and the corresponding relation of branch road in OVCDM are set in advance.
In the present embodiment, setting terminal 1 corresponding first branch road, terminal 2 corresponding second branch roads, terminal 3 corresponding the 3rd branch roads.
Step 802:, confirm the branch road of each terminal correspondence in coding of reception serial data according to said corresponding relation.
Before this step, can carry out concatenated coding similarly with embodiment one equally.
Step 803:, the serial data to be sent that belongs to this branch road counterpart terminal is encoded according to the weight coefficient of said branch road.
Step 804: the serial data after will encoding through antenna for base station in the base station sends.
The sketch map of base station transmission data is as shown in Figure 9.
Between step 803 and step 804, also be included as the step that the serial data behind each coding distributes power, the serial data that is behind each coding to be sent distributes power according to the principle of setting.Concrete power division principle can be to distribute according to the channel quality between base station and the terminal, the higher power of terminal distribution that channel quality is relatively poor, and channel quality is the lower power of terminal distribution preferably.For example: the channel quality between terminal 1 and the base station is the poorest, and the serial data that then sends to terminal 1 distributes the highest power, and the channel quality between terminal 3 and the base station is best, and the serial data that then sends to terminal 3 distributes minimum power.The power summation of distributing for all serial datas is no more than the power that the base station can reach.
The embodiment of the invention four described a kind of in communication system the method for data processing, this method can be on the basis of embodiment three, the processing that the data that end-on is received are carried out also can be that the data of sending through additive method are handled.Shown in figure 10, this scheme may further comprise the steps:
Step 1001: terminal antenna receives serial data.
With embodiment two similarly, the serial data that the terminal receives is to utilize the serial data that superposes after the weighting of channel fading coefficient.
Step 1002: the OVCDM decoding is carried out according to the serial data of channel estimating parameter after to the coding that receives in the terminal.
In this step, iterative decoding also can be carried out according to the mode of the middle description of embodiment two to the data that receive in the terminal.
In step 1002, can also carry out the operation of interference delete to the serial data that receives according to the channel estimating parameter before decoding, when decoding, can no longer utilize the channel estimating parameter thereafter.
Step 1003: according to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, the serial data of self is confirmed to belong in the decoded serial data in the terminal.
For example: the three circuit-switched data strings that terminal 1 obtains through decoding, the serial data of confirming to belong to terminal 1 according to the corresponding relation that is provided with in advance is the serial data that takies first branch road.
Description through embodiment one; The embodiment of the invention five also provides a kind of terminal; Shown in figure 11; This terminal comprises branch road determination module 11, coding module 12 and sending module 13, and wherein: branch road determination module 11 is used for according to terminal and the corresponding relation between the coding branch road, confirms terminal corresponding branch road in coding at place; Coding module 12 is used for the weight coefficient according to the said branch road of confirming, serial data to be sent is encoded; Sending module 13 is used to send the serial data behind the coding.
Further, said coding module 12 comprises selected cell 21, weighted units 22 and superpositing unit 23, and wherein, selected cell 21 is used for selecting one from said serial data to be sent successively and does not carry out the coded data symbol; One or more data symbols that the weight coefficient that weighted units 22 is used for utilizing said branch road has been selected at this serial data before the data symbol of said this selection of selected cell and this are selected carry out operation for weighting; Superpositing unit 23 is used for the data symbol after the weighting is superposed to a data symbol behind the coding.
Corresponding with embodiment two, the embodiment of the invention six also provides a kind of base station, and is shown in figure 12, and this base station comprises receiver module 31, decoder module 32 and terminal deciding module 33, and wherein: receiver module 31 is used to receive the serial data that send at least one terminal; Decoder module 32 is used for the said serial data that receives is carried out decode operation; Terminal deciding module 33 is used for according to terminal and the corresponding relation between the coding branch road, and the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
Said decoder module 32 is used for through Maximum likelihood sequence detection the said serial data that receives being carried out decode operation.
The base station of also corresponding a kind of embodiment seven records of the scheme that the embodiment of the invention three is described; Shown in figure 13; This base station comprises: branch road determination module 41, coding module 42 and sending module 43; Wherein: branch road determination module 41 is used for according to terminal and the corresponding relation between the coding branch road, confirms the branch road of each terminal correspondence in coding of reception serial data; Coding module 42 is used for the weight coefficient according to the said branch road of confirming, encodes to belonging to this branch road counterpart terminal serial data to be sent; Sending module 43 is used for the serial data behind the coding is sent.
Said base station also comprises power division module 44, and the serial data that is used to after to be sent each is encoded distributes power according to the principle of setting.Serial data transmission after sending module 43 is used for will encode according to the power that distributes.
Corresponding with the embodiment of the invention four, the embodiment of the invention eight also provides a kind of terminal, and is shown in figure 14, and said terminal comprises receiver module 51, decoder module 52 and serial data determination module 53, and wherein: receiver module 51 is used to receive serial data; Decoder module 52 is used for the said serial data that receives is carried out decode operation; Serial data determination module 53 is used for according to terminal and the corresponding relation between the coding branch road, according to the branch road at serial data place, decoding back, confirms to belong in the decoded serial data serial data at this terminal.
Said decoder module 52 is used for through Maximum likelihood sequence detection the said serial data that receives being carried out decode operation.
The description of comprehensive above each embodiment; The embodiment of the invention nine also provides two kinds of communication systems to the uplink and downlink transmission course respectively, and is shown in figure 15, comprising: at least one terminal 61 and base station 62; Wherein: terminal 61 is used for according to terminal and the corresponding relation between the coding branch road; Confirm from corresponding branch road in coding, and, carry out sending behind the encoding operation to sent serial data according to the weight coefficient of said branch road; Base station 62 is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
Under another kind of situation; Base station 62 is used for according to terminal and the corresponding relation between the coding branch road; Confirm the branch road of each terminal correspondence in coding of reception serial data; And, the serial data to be sent that belongs to this branch road counterpart terminal back of encoding is sent according to the weight coefficient of said branch road; Terminal 61 is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, according to the branch road at serial data place, decoding back, confirms to belong in the serial data of decoding back the serial data at said terminal.The serial data that said base station 62 also is used to behind each coding to be sent distributes power according to the principle of setting.
Through method, communication system and the communication equipment that the embodiment of the invention is put down in writing, reduced multi-user's requirement to channel space independence when carrying out the MIMO transmission, improved the reliability of transmission; Receiver side carries out repeatedly iterative decoding to the data that receive, and has improved the precision of transfer of data; In addition, when downlink transfer, the base station is that serial data to be sent distributes power according to current channel quality, has improved the success rate of transfer of data.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (23)
1. method of in communication system, sending data is characterized in that this method comprises:
According to the terminal and in coding the corresponding relation between the branch road, confirm terminal corresponding branch road in coding;
According to the weight coefficient of said branch road, encode to sent serial data in said terminal;
The serial data behind the coding is sent at said terminal.
2. the method for claim 1 is characterized in that, according to the weight coefficient of said branch road, encoding to sent serial data in said terminal, comprising:
From said serial data, select one successively and do not carry out the coded data symbol, the weight coefficient that utilizes said branch road carries out operation for weighting to one or more data symbols of in this serial data, having selected before the data symbol of this selection and this selection;
Data symbol after the weighting is superposed to a data symbol behind the coding.
3. the method for a data processing in communication system is characterized in that, said method comprises:
Receive the serial data that send at least one terminal, and the said serial data that receives is carried out decode operation;
According to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, determine the terminal of said serial data under respectively.
4. method as claimed in claim 3 is characterized in that, through Maximum likelihood sequence detection the said serial data that receives is carried out decode operation.
5. method of in communication system, sending data is characterized in that this method comprises:
According to the terminal and in coding the corresponding relation between the branch road, each terminal that confirm to receive serial data corresponding branch road in coding;
According to the weight coefficient of said branch road, the serial data to be sent that belongs to this branch road counterpart terminal is encoded;
Send the serial data after encoding.
6. method as claimed in claim 5 is characterized in that, according to the weight coefficient of said branch road, the serial data to be sent that belongs to this branch road counterpart terminal is encoded, and comprising:
From said serial data, select one successively and do not carry out the coded data symbol, the weight coefficient that utilizes said branch road carries out operation for weighting to one or more data symbols of in this serial data, having selected before the data symbol of this selection and this selection;
Data symbol after the weighting is superposed to a data symbol behind the coding.
7. method as claimed in claim 5 is characterized in that, after said serial data to be sent is encoded, and will send before the serial data behind the coding, comprising:
For the serial data behind each coding to be sent distributes power according to the principle of setting.
8. method as claimed in claim 7 is characterized in that, sends the serial data after encoding, and comprising:
Be utilized as the power that the said serial data behind each coding distributes and send said serial data.
9. method as claimed in claim 7 is characterized in that, the principle of said setting is:
Channel quality between the terminal of base station and reception serial data is good more, and the power that distributes for the serial data that belongs to this terminal is low more.
10. the method for a data processing in communication system is characterized in that, said method comprises:
The terminal receives serial data, and the said serial data that receives is carried out decode operation;
According to the terminal and in coding the corresponding relation between the branch road, according to the branch road at decoding back serial data place, confirm to belong in the decoded serial data serial data at said terminal.
11. method as claimed in claim 10 is characterized in that, through Maximum likelihood sequence detection the said serial data that receives is carried out decode operation.
12. a terminal is characterized in that, this terminal comprises:
The branch road determination module is used for according to terminal and the corresponding relation between the coding branch road, confirms terminal corresponding branch road in coding at place;
Coding module is used for the weight coefficient according to the said branch road of confirming, serial data to be sent is encoded;
Sending module is used to send the serial data behind the coding.
13. terminal as claimed in claim 12 is characterized in that, said coding module comprises:
Selected cell is used for selecting one from said serial data to be sent successively and does not carry out the coded data symbol;
One or more data symbols that weighted units, the weight coefficient that is used for utilizing said branch road have been selected at this serial data before the data symbol of said this selection of selected cell and this are selected carry out operation for weighting;
Superpositing unit is used for the data symbol after the weighting is superposed to a data symbol behind the coding.
14. a base station is characterized in that, said base station comprises:
Receiver module is used to receive the serial data that send at least one terminal;
Decoder module is used for the said serial data that receives is carried out decode operation;
Terminal deciding module is used for according to terminal and the corresponding relation between the coding branch road, and the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
15. base station as claimed in claim 14 is characterized in that,
Said decoder module is used for through Maximum likelihood sequence detection the said serial data that receives being carried out decode operation.
16. a base station is characterized in that, this base station comprises:
The branch road determination module is used for according to terminal and the corresponding relation between the coding branch road, confirms the branch road of each terminal correspondence in coding of reception serial data;
Coding module is used for the weight coefficient according to the said branch road of confirming, encodes to belonging to this branch road counterpart terminal serial data to be sent;
Sending module is used to send the serial data behind the coding.
17. base station as claimed in claim 16 is characterized in that, said coding module comprises:
Selected cell is used for selecting one from said serial data to be sent successively and does not carry out the coded data symbol;
One or more data symbols that weighted units, the weight coefficient that is used for utilizing said branch road have been selected at this serial data before the data symbol of said this selection of selected cell and this are selected carry out operation for weighting;
Superpositing unit is used for the data symbol after the weighting is superposed to a data symbol behind the coding.
18. base station as claimed in claim 16 is characterized in that, said base station also comprises:
The power division module, the serial data that is used to after to be sent each is encoded distributes power according to the principle of setting.
19. base station as claimed in claim 18 is characterized in that,
Said sending module is used to be utilized as the power that the said serial data behind each coding distributes and sends said serial data.
20. a terminal is characterized in that, said terminal comprises:
Receiver module is used to receive serial data;
Decoder module is used for the said serial data that receives is carried out decode operation;
The serial data determination module is used for according to terminal and the corresponding relation between the coding branch road, according to the branch road at serial data place, decoding back, confirms to belong in the decoded serial data serial data at this terminal.
21. terminal as claimed in claim 20 is characterized in that,
Said decoder module is used for through Maximum likelihood sequence detection the said serial data that receives being carried out decode operation.
22. a communication system is characterized in that, said system comprises:
At least one terminal is used for according to terminal and the corresponding relation between the coding branch road, confirms from corresponding branch road in coding, and according to the weight coefficient of said branch road, carries out sending behind the encoding operation to sent serial data;
The base station is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, the branch road at serial data place, foundation decoding back is determined the affiliated respectively terminal of said serial data.
23. a communication system is characterized in that, said system comprises:
The base station; Be used for according to terminal and the corresponding relation between the coding branch road; Each terminal that confirm to receive serial data corresponding branch road in coding, and according to the weight coefficient of said branch road sends the serial data to be sent that belongs to this branch road counterpart terminal back of encoding;
At least one terminal is used for the serial data behind the coding that receives is carried out decode operation, and according to said corresponding relation, according to the branch road at serial data place, decoding back, confirms to belong in the serial data of decoding back the serial data at said terminal.
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| CN109687935B (en) * | 2017-10-18 | 2022-09-13 | 吕文明 | Decoding method and device |
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| CN1522512A (en) * | 2001-05-16 | 2004-08-18 | �����ɷ� | Method and apparatus for allocating resources in a multiple-input multiple-output (MIMO) communication system |
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