CN102065038A - Reconstruction method and device for realizing interference cancellation in wireless communication system - Google Patents
Reconstruction method and device for realizing interference cancellation in wireless communication system Download PDFInfo
- Publication number
- CN102065038A CN102065038A CN2010105805297A CN201010580529A CN102065038A CN 102065038 A CN102065038 A CN 102065038A CN 2010105805297 A CN2010105805297 A CN 2010105805297A CN 201010580529 A CN201010580529 A CN 201010580529A CN 102065038 A CN102065038 A CN 102065038A
- Authority
- CN
- China
- Prior art keywords
- data
- filtering
- user
- reconstruct
- restructing operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a reconstruction method for realizing interference cancellation in a wireless communication system. The method comprises the following steps of: dividing a storage space for storing filtered data of a previous user according to maximum value of a conflict window; and acquiring filtered data of a current user and the filtered data of the previous user adjacent to the current user from the filtered branch data, performing reconstructing operation with original reconstructed data and performing interference cancellation. The invention also discloses a reconstruction device for realizing the interference cancellation in the wireless communication system. A reconstruction implementing unit in the device is used for dividing the storage space for storing the filtered data of the previous user according to the maximum value of the conflict window, acquiring the filtered data of the current user and the filtered data of the previous user adjacent to the current user from the filtered branch data, performing reconstructing operation with the original reconstructed data and performing the interference cancellation. By the method and the device, the problem of data conflict between the users is solved at a lower cost and higher performance.
Description
Technical field
The invention belongs to field of wireless communications systems, relate in particular to reconstructing method and the device of realizing Interference Cancellation in a kind of wireless communication system.
Background technology
Along with the fast development of 3G technology, data service also obtains popularizing widely, and single user's data amount and power are also in continuous enhancing, so the inter-user interference between system user is also in continuous enhancing.In order to reduce the interference between the user, the decoding performance of elevator system, a lot of high-end base station baseband chips have all increased the Interference Cancellation function one by one, to promote the disposal ability of whole system.Interference Cancellation mainly is that the user data that is correctly decoded through base station processor is reconstructed, and reconstruct generally is applied to realize the Interference Cancellation of wireless communication system.Because the user that reconstruction signal is not correctly decoded relatively is a kind of interference, therefore need offset processing to reconstruction signal at antenna, to reduce the not interference rank of decode users, improve not decode users quality of signals.Like this through behind the Interference Cancellation, when decoding through baseband processor once more through the antenna data of offsetting processing, the user who before is not correctly decoded, may just can be correctly decoded specifically, that is to say, reduce the not interference rank of decode users by reconstruct, thereby improved not decode users quality of signals.
During reconstruct, just each user data is added up.In the prior art,, generally carry out parallel pipelining process between each user in order to keep the performance of certain standard, while n chip of parallel processing (chip) data, the adjacent compactness of each user is carried out flowing water.But, if handle like this, then might produce data collision, also do not write corresponding stored zone A such as user 1 reconstruct data, user 2 just is used for restructing operation from storage area A reading of data.
The data collision problem of bringing when preventing reconstruct has two kinds of solutions in the prior art.To exist two users (user 1 and user 2) to illustrate as follows:
Scheme one is: judge the data collision window in advance, carry out the scheduling controlling of special appointment and handle.For the user that may clash, adopt by time priority, be reconstructed computing one by one, designated user 1 is finished restructing operation restart user 2 fully and is reconstructed computing.The shortcoming that the processing mode of employing scheme one is brought is: just start user 2 owing to waiting for that user's 1 complete reconstruct finishes, rather than user 1 does sub-fraction and just starts user 2, flowing water has been interrupted, and causes systematic function decline and uncontrollable, and the control complexity sharply rises.
Scheme two is: adopt the table tennis random-access memory (ram) to handle.Adopt two reconstruct RAM (two reconstruct data memory modules in the corresponding diagram 1), the different RAM of neighboring user employing carries out restructing operation separately, and each is irrelevant for the data of neighboring user, has also just solved the data collision problem.But, the processing mode of employing scheme two is after restructing operation finishes, and the reconstruct data of two reconstruct RAM the insides all is incomplete, must increase a subsequent processes, that is: need the reconstruct data in two RAM be merged one to one, to produce final reconstruction result.The system architecture that adopts during reconstruct comprises two users reconstruct data memory module, restructing operation processing module and reconstruct data read-write control module separately as shown in Figure 1.As seen, the shortcoming that the processing mode of employing scheme two is brought is: this processing mode is to increase the mode that cost exchanges systematic function for, that is to say, in order to improve systematic function, after normal restructing operation finishes, be not complete reconstruct data owing to what obtain, therefore, need be reconstructed the merging of data by above-mentioned subsequent processes, thereby need additionally increase reconstruct RAM, and reconstruct RAM is bigger at above-mentioned subsequent processes; Utilizing reconstruct to realize that in the Interference Cancellation process, reconstruct is relevant with various channels, thereby certainly will have many places reconstruct RAM.In sum, adopting above-mentioned any reconfiguration scheme, all have bigger defective, is not to cause systematic function to descend and control complexity height, though can improve the extra increase of systematic function need system manufacturing cost exactly.
Summary of the invention
In view of this, the present invention proposes reconstructing method and the device of realizing Interference Cancellation in a kind of wireless communication system, can be when the data collision problem that solution reconstruct brings, can not only avoid data collision, and under the situation that keeps the maximum system performance, reduce the complexity of control and the consumption of system's manufacturing cost.
For achieving the above object, technical scheme of the present invention is achieved in that
Realize the reconstructing method of Interference Cancellation in a kind of wireless communication system, this method comprises: the maximum of determining the conflict window of generation data collision; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.
Wherein, this method also comprises: the maximum of determining described conflict window according to the processing cycle of restructing operation;
Comprise in the described memory space: according to the storage area of each conflict window in the definite conflict time range of the maximum of described conflict window.
Wherein, obtain a last user filtering adjacent with described active user after data specifically comprise: the size and the position that obtain active user's actual conflict window according to user's skew of active user and a last user adjacent with the active user; From described memory space, find corresponding conflict window storage area according to the size of described active user's actual conflict window and position, obtain a described last user adjacent and be in data after the filtering of corresponding conflict window storage area with the active user.
Wherein, this method also comprises: if described restructing operation result meets the requirements, then Interference Cancellation is carried out in restructing operation result output; If described restructing operation result is undesirable, then with the restructing operation result as original reconstructed after data proceed restructing operation or directly the restructing operation result abandoned, data after the original reconstructed before reading again are reconstructed computing.Wherein, at meeting described requirement, adjacent two users' skew does not drop on the conflict window, and result of calculation is satisfactory so, otherwise is undesirable.
Realize the reconfiguration device of Interference Cancellation in a kind of wireless communication system, this device comprises: reconstruct realizes the unit, is used for definite maximum that the conflict window of data collision takes place; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.
Wherein, described reconstruct realizes that the unit specifically comprises: filtering data branch process module, restructing operation processing module, reconstruct data memory module, reconstruct data read-write control module; Wherein,
Described filtering data branch process module, be used for data after the filtering that receives are carried out after filtering branch handles, export data after data after the active user's filtering that comprises in the filtering branch data and last user's filtering adjacent to the restructing operation processing module, participate in restructing operation with the active user; Wherein, comprise in the described filtering data branch process module that maximum according to described conflict window marks off the memory space that is used to store data after last user's filtering;
Described restructing operation processing module is used for according to after data are carried out restructing operation after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent Interference Cancellation being carried out in restructing operation result output;
Described reconstruct data memory module is used to store the restructing operation result;
Described reconstruct data read-write control module is used for the reconstruct data memory module is read and write control, the data that will read from the reconstruct data memory module as original reconstructed after data export to the restructing operation processing module.
Wherein, the described memory space in the described filtering data branch process module comprises: according to the storage area of each conflict window in the definite conflict time range of the maximum of described conflict window; The maximum of described conflict window was determined by the processing cycle of restructing operation.
Wherein, described filtering data branch process module, be further used for carrying out filtering branch and handle when obtaining after last user's filtering adjacent data output, the size and the position that obtain active user's actual conflict window according to user's skew of active user and a last user adjacent with the active user with the active user; From described memory space, find corresponding conflict window storage area according to the size of described active user's actual conflict window and position, obtain a described last user adjacent and be in data after the filtering of corresponding conflict window storage area with the active user.
Wherein, described reconstruct data read-write control module, be further used for system time and user's skew thereof according to current reconstruct data correspondence, read corresponding reconstruct data to reconstruct data memory module correspondence position, then with the data that read as original reconstructed after data export to the restructing operation processing module.
Wherein, described reconstruct data memory module meets the requirements if be further used for described restructing operation result, then Interference Cancellation is carried out in restructing operation result output; If described restructing operation result is undesirable, then the restructing operation result is exported to reconstruct data read-write control module as original reconstructed after data proceed restructing operation or directly the restructing operation result abandoned, again will before the restructing operation result export to reconstruct data read-write control module as original reconstructed after data be reconstructed computing.
The present invention determines the maximum of the conflict window of generation data collision; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.Adopt the present invention, can when the data collision problem that solution reconstruct brings, can not only avoid data collision, and under the situation that keeps the maximum system performance, reduce the complexity of control and the consumption of system's manufacturing cost.
Description of drawings
Fig. 1 is the system construction drawing of data collision when having ping-pong ram solution reconstruct now;
Fig. 2 is the time overhead schematic diagram of restructing operation of the present invention;
Fig. 3 is the conflict window schematic diagram of data collision of the present invention;
Fig. 4 is that the present invention selects the different schematic diagrames of data constantly according to conflict window diverse location;
Fig. 5 is a system embodiment structure chart of the present invention.
Embodiment
Basic thought of the present invention is: the maximum of determining the conflict window of generation data collision; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
The solution of the present invention is used in the Interference Cancellation of wireless communication system widely, finishes various channels, the restructing operation of various user data.The present invention can solve when the parallel pipelining process restructing operation, the data collision problem that the neighboring user data take place.Still for instance with two users (user 1 and user 2), the reason that the data collision problem produces is: user 1 reads the data of storage area A, and accept user's 1 oneself filtering data, two paths of data is reconstructed computing, because restructing operation divides several steps, need the certain hour cycle to dispose fully, only after disposing, result just writes back storage area A again.And when user 1 is in restructing operation, if user 2 is used for restructing operation from storage area A reading of data, then the data of obtaining from storage area A are the results that do not comprise user 1, so just produce data collision, thereby active user (user 2) when being reconstructed computing, because a last user's (user 1) related data before the disappearance can finally cause whole reconstruction result imperfect.The present invention is three tunnel computings, in filtering data branch process module, open up memory space, data after a last user's the filtering before being used to store, a last user's related data adds to this memory space before being about to lack in the prior art, carry out three tunnel computings at data after active user's oneself filtering data, a last user's filtering data and the original reconstructed then, in the reconstruction result of avoiding obtaining under the situation of data collision is complete, can realize best Interference Cancellation.Because the present invention just can realize avoiding the reconstruct of data collision with a slice reconstruct RAM (as a reconstruct data memory module), also need not to be used for the reconstruct RAM that the subsequent treatment reconstruct data merges as two the extra increases of prior art scheme, therefore, reduced system's manufacturing cost.And this brand-new processing mode, can not only avoid with high costs, processing links lengthening, and can also avoid controlling complexity height, problem that systematic function is low, can under the situation that keeps the maximum system performance, reduce the complexity of control and the consumption of system's manufacturing cost.
Realize the reconstructing method of Interference Cancellation in a kind of wireless communication system, mainly comprise following content:
One, data after the filtering are carried out branch, data become two branch roads through branch by a branch road after the filtering, and the output of two branch roads according to the time migration of neighboring user, has different delay inequalities.Because the data collision window length before the neighboring user is relevant with the restructing operation processing cycle, therefore, according to the processing cycle of restructing operation, (maximum of this conflict window is used for determining the maximum collision time range can to derive the maximum of the conflict window of data collision, comprised the scope of the conflict window of data collision might appear), adopt the maximum of this conflict window in filtering data branch process module, to divide the memory space of corresponding size, with data after the filtering of a last user before the storage.Wherein, at the described processing cycle, this processing cycle is by the decision of time that each link consumed of reconstruction processing.For example, if reconstruction processing comprises 4 steps: (elapsed time 2) 1, fetches data; 2, transfer of data (elapsed time 3); 3, data accumulation computing (elapsed time 1); 4, data cut position reprocessing (elapsed time 1), then the processing cycle is exactly=2+3+1+1=7.
Two, divide the memory space of corresponding size according to the maximum of conflict window, behind the decision filtering branch (before comprising after a last user's the filtering after data and active user's the filtering data), the maximum time difference of two filtering branch, the maximum of spatial cache when also being filtering branch.The determined maximum collision time range of maximum according to the conflict window, promptly from might occur the scope of conflict window of data collision, determine the size and the position of active user's actual conflict window, and from the memory space of dividing according to the maximum of conflict window, obtain a last user according to the size of active user's actual conflict window and position and be in data after the filtering of conflict window.
Three, be in after data after the filtering of conflict window, the active user's filtering after the data and original reconstructed data according to the last user that obtains and carry out three tunnel computings, operation result output carrying out Interference Cancellation.Here, according to the reconfiguration principle analysis, relevant a little less than user's reconstruct order and the reconstruction result, during restructing operation, adjust user's reconstruct order, do not change the final result after the reconstruct, therefore, in the conflict window, accept two circuit-switched data behind the filtering branch, and read the corresponding data of reconstruct RAM, to the mode of three tunnel input data parallel computings, obtain a unique final result, avoid data collision.Avoided the consumption of ping-pong ram, and the data of reconstruct RAM are complete final datas, do not need extra last handling process.And the entire process process, flowing water mechanism was not interrupted, and had kept the optimum of systematic function.
Realize the reconfiguration system of Interference Cancellation in a kind of wireless communication system, mainly comprise following content:
This device mainly comprises four modules: filtering data branch process module, reconstruct data memory module, reconstruct data read-write control module, restructing operation processing module.
Wherein, the reconstruct data memory module is used for depositing the restructing operation result data, and the sequencing of system time is pressed in address field space of each CU, and the address in the reconstruct data memory module increases progressively successively.The user is offset identical user, takies same sector address space.The user that user's deviation ratio is less, the first address deviation ratio that takies address field is less.The user that user's deviation ratio is bigger, the first address deviation ratio that takies address field is bigger.
Reconstruct data read-write control module mainly is to be used for reconstruct RAM (as the reconstruct data memory module) is read and write control.System time and user's skew thereof according to current reconstruct data correspondence, read corresponding reconstruct data to reconstruct RAM (as the reconstruct data memory module) correspondence position, then data after the original reconstructed that reads are sent to the restructing operation processing module, participate in restructing operation.Restructing operation processing module output result carries toward the corresponding position of reconstruct RAM (as the reconstruct data memory module), new and old reconstruction result data.Choosing according to as shown in Figure 3 of reading of data.
The restructing operation processing module is used for carrying out restructing operation, and data add up and overflow related operation such as cut position processing after the original reconstructed that the user data of input and reconstruct data read-write control module are read from reconstruct RAM (as the reconstruct data memory module).Owing to will carry out the neighboring user concurrent operation, the user data of input sometimes is a two-way, add data after the original reconstructed that reconstruct data read-write control module reads from reconstruct RAM (as the reconstruct data memory module), the restructing operation processing module will be supported three tunnel computings of three input additions.
Filtering data branch process module mainly is to be used for accepting filter the back data, divides two-way output data then, and the time delay intervals of two-way dateout equals data collision window length.Two paths of data is sent to the restructing operation processing module, participates in restructing operation.
Data after the filtering are stored according to conflict window length, and the time of maximum collision window is that reconstruct RAM (as the reconstruct data memory module) reads into the time that writes, according to the difference of heavy RAM (as the reconstruct data memory module) kind, general 5 clock cycle.Therefore largest buffered space address space is 5 addresses, each address space 512 bit.It totally is the space of 2560bit.Reconstruct RAM (as the reconstruct data memory module) every 16chip time need consume 512bit, and the time is 4.1slot altogether, and equivalence is 10496chip, and the space that needs is 335.872K, and owing to the double antenna reason, need double probably for about 671K.
In sum, for fear of the data collision problem, the scheme two of prior art, the general 671K of memory space that adopts ping-pong ram to increase, and the present invention has only increased the memory space of general 2.5Kbit.Even considered that the compression optimization of reconstruct memory space and restructing operation of the present invention are the consumption of three-input adder, make on the area in overall newly-increased system, the present invention is also than little two orders of magnitude of existing ping-pong ram method.As seen: reconstructing method of the present invention and device, realized the reconstruction processing of data after the filtering.And the performance height can be realized 16chip parallel pipelining process at full speed, the performance approximation theory limit.For solving the reconstruct data memory module that data collision uses, save nearly two orders of magnitude (hundred times) than the recruitment of existing ping-pong ram.And this reconstructing method and device be when using in the Wideband Code Division Multiple Access (WCDMA) interference cancellation systems, because multiple situation is arranged, multiple channel must be reused, and therefore many times repetition income is arranged.
Below to the present invention's elaboration of giving an example.
Method embodiment: use the method flow of apparatus of the present invention, may further comprise the steps:
Step 101: adopt existing reconfiguration principle to determine the algorithm of restructing operation, according to the structure of restructing operation processing module, the time overhead of each link of segmentation computing, comprise and fetch data, data computation, result of calculation reprocessing, the time overhead of this four processes of write-back.Wherein, at existing reconfiguration principle, for example, and A, the party B-subscriber is reconstructed, and the method for employing is A, and B is on time shaft, and the data of synchronization add up.
Here, the time overhead of this four processes as shown in Figure 2, among Fig. 2, clk represents system clock; Rden represents the control enable signal of read memory cell; Rdata represents to obtain the data that transmission is come out from memory cell; Rdata_acc represents the intermediate object program through the initial reconstitution computing; Result represents final restructing operation data; Wdata represents write data; Wen represents to read to enable; Saturate represents the Data Post behind the restructing operation, as overflow, cut position etc.
Step 102: the time overhead definite according to step 101, the maximum of the conflict window of specified data conflict, the maximum of this conflict window is used for determining the maximum collision time range, and the maximum of foundation conflict window, data buffer area after the division filtering in filtering data branch process module, the size of this buffer area is the maximum of conflict window.
Step 103:, determine the size and the position of user's actual conflict window according to user's skew of former and later two users of restructing operation processing module and input.
Step 104: the size and the position of the conflict window of determining according to step 103, data buffer zone after the filtering of filtering data branch process Module Division obtains a user and is in data after the filtering of this conflict window of determining.
Step 105: according to step 104, filtering data branch process module a last user's filtering after data after data and active user's the filtering, send to the restructing operation processing module together.
Step 106: the restructing operation processing module is accepted data after former and later two users' that filtering data branch process module sends over the filtering, and receive data after the original reconstructed that reconstruct data read-write control module sends over simultaneously, and these three groups of data are reconstructed computing.
Step 107: reconstruct data read-write control module receives the operation result of restructing operation processing module, and the restructing operation result, stores reconstruct RAM (as the reconstruct data memory module) inside into, this operation result output carrying out Interference Cancellation.
At above step 101～107 technical schemes that constituted, as shown in Figure 2, need 5 clock cycle before and after the reconstruction processing.In order to remain in the rational behavior scope, to be that 16 chip are parallel handle at every turn in reconstruct, and be that unit carries out flowing water with per 16 chip.And in this 5 clock cycle, if the reconstruct RAM memory space of the current data correspondence of handling is read, data collision will take place.Because the data that read this moment do not comprise this this user's reconstruct effect, and direct and next user's filtering data is reconstructed computing, and final result will be incomplete so.By analysis, learn that the result is imperfect to the end, and disappearance is a last user's related data.Therefore, the present invention can execution in step 102, divides the memory space of corresponding size in filtering data branch process module according to the maximum of the conflict window of data collision, stores data after a user's the filtering.And according to step 101, can obtain the time of knowing restructing operation and not very grow, the memory space that marks off is smaller.
As shown in Figure 3, with user's initial address be reference, relative address 28,29,30,31, the 32nd, there is the risk zones of data collision, that is to say relative address 28,29,30, the conflict window of 31,32 correspondences is positions that data collision possible take place, and can be used for dividing storage area in filtering data branch process module by the maximum of the conflict window that they constituted.Yet it is uncertain specifically beginning to carry out data collision from the conflict window of which address correspondence, and this is related with adjacent former and later two users' skew.If the skew between the user differs 448chip, 28 begin to take place data collision from the address so, if the skew between the user differs 512chip, 32 begin to clash from the address so.Different along with user skew, the original position of conflict is also different, does not drop on the conflict window, and data are not conflicted so.Therefore execution in step 103 is offset according to former and later two users' of input user and determines concrete collision position, the conflict time period.
In execution of step 102, after the step 103, as shown in Figure 4, in the storage area that can filtering data branch process module, mark off from maximum according to the conflict window, the related data of last user's correspondence output before selecting, because this storage area is made up by shift register and forms, therefore as long as on the initial time coupling, follow-up data will mate naturally.Step 104,105,106,107 restructing operation processing modules are accepted adjacent former and later two user's data, and receive original reconstruct data, and are reconstructed computing.Not only the disappearance in the original reconstructed data is partly compensated, and do not interrupting flowing water, do not reducing under the situation of performance, active user's filtering data is being merged want in the reconstruct RAM.
System embodiment:
As shown in Figure 5, this reconfiguration device comprises four modules: filtering data branch process module, reconstruct data memory module, reconstruct data read-write control module, restructing operation processing module.
Reconstruct data memory cell module is used for depositing the restructing operation result data, and the sequencing of system time, increasing progressively successively in the reconstruct data memory module are pressed in address field space of each CU.The user is offset identical user, takies same sector address space.The user that user's deviation ratio is less, the first address deviation ratio that takies address field is less.The user that user's deviation ratio is bigger, the first address deviation ratio that takies address field is bigger.
Reconstruct data read-write control module is used for the reconstruct data memory module is read and write control.According to system time and user's skew thereof of current reconstruct data correspondence, read corresponding reconstruct data to reconstruct data memory module correspondence position, then data are sent to the restructing operation processing module, participate in restructing operation.Restructing operation processing module output result carries toward the corresponding position of reconstruct data memory module new and old reconstruction result data.Choosing according to as shown in Figure 3 of reading of data, among Fig. 3, case represents situation, represents situation 1 as case1; Last clock of lase TIF represents last clock cycle of last user's restructing operation control; First clock of current TIF represents initial first clock cycle of active user's restructing operation.
The restructing operation processing module is used for carrying out restructing operation, and data add up and overflow related operation such as cut position processing after the original reconstructed that the user data of input and reconstruct data read-write control module are read from the reconstruct data memory module.Owing to will carry out the neighboring user concurrent operation, the user data of input sometimes is a two-way, adds data after the original reconstructed that reconstruct data read-write control module reads from the reconstruct data memory module, and arithmetic element will be supported three input add operations.
Filtering data branch process module mainly is to be used for accepting filter the back data, divides two-way output data then, and the time delay intervals of two-way dateout equals data collision window length.Two paths of data is sent to the restructing operation processing unit module, participates in restructing operation.Select different data constantly as shown in Figure 4, among Fig. 4, reg represents register, represents that as reg31 name is the register of " reg31 "; The MUX presentation selector; Filter_out_data represents data after the filtering; First_read_addr represents that initial read reads the reconstruct memory cell; First n clock represents an initial N clock cycle.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. realize the reconstructing method of Interference Cancellation in the wireless communication system, it is characterized in that this method comprises: the maximum of determining to take place the conflict window of data collision; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.
2. method according to claim 1 is characterized in that, this method also comprises: the maximum of determining described conflict window according to the processing cycle of restructing operation;
Comprise in the described memory space: according to the storage area of each conflict window in the definite conflict time range of the maximum of described conflict window.
3. method according to claim 2, it is characterized in that, obtain a last user filtering adjacent with described active user after data specifically comprise: the size and the position that obtain active user's actual conflict window according to user's skew of active user and a last user adjacent with the active user; From described memory space, find corresponding conflict window storage area according to the size of described active user's actual conflict window and position, obtain a described last user adjacent and be in data after the filtering of corresponding conflict window storage area with the active user.
4. according to each described method in the claim 1 to 3, it is characterized in that this method also comprises:, then Interference Cancellation is carried out in restructing operation result output if described restructing operation result meets the requirements; If described restructing operation result is undesirable, then with the restructing operation result as original reconstructed after data proceed restructing operation or directly the restructing operation result abandoned, data after the original reconstructed before reading again are reconstructed computing.
5. realize the reconfiguration device of Interference Cancellation in the wireless communication system, it is characterized in that this device comprises: reconstruct realizes the unit, is used for determining taking place the maximum of the conflict window of data collision; Mark off the memory space that is used to store data after last user's filtering according to the maximum of described conflict window; From the filtering branch data, obtain data after data after active user's filtering and last user's filtering adjacent with the active user, and, Interference Cancellation is carried out in restructing operation result output according to after data are reconstructed computing after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent.
6. device according to claim 5 is characterized in that, described reconstruct realizes that the unit specifically comprises: filtering data branch process module, restructing operation processing module, reconstruct data memory module, reconstruct data read-write control module; Wherein,
Described filtering data branch process module, be used for data after the filtering that receives are carried out after filtering branch handles, export data after data after the active user's filtering that comprises in the filtering branch data and last user's filtering adjacent to the restructing operation processing module, participate in restructing operation with the active user; Wherein, comprise in the described filtering data branch process module that maximum according to described conflict window marks off the memory space that is used to store data after last user's filtering;
Described restructing operation processing module is used for according to after data are carried out restructing operation after data and the original reconstructed after data after described active user's filtering, described and the last user's filtering that the active user is adjacent Interference Cancellation being carried out in restructing operation result output;
Described reconstruct data memory module is used to store the restructing operation result;
Described reconstruct data read-write control module is used for the reconstruct data memory module is read and write control, the data that will read from the reconstruct data memory module as original reconstructed after data export to the restructing operation processing module.
7. device according to claim 6 is characterized in that, the described memory space in the described filtering data branch process module comprises: according to the storage area of each conflict window in the definite conflict time range of the maximum of described conflict window; The maximum of described conflict window was determined by the processing cycle of restructing operation.
8. device according to claim 7, it is characterized in that, described filtering data branch process module, be further used for carrying out filtering branch and handle when obtaining after last user's filtering adjacent data output, the size and the position that obtain active user's actual conflict window according to user's skew of active user and a last user adjacent with the active user with the active user; From described memory space, find corresponding conflict window storage area according to the size of described active user's actual conflict window and position, obtain a described last user adjacent and be in data after the filtering of corresponding conflict window storage area with the active user.
9. device according to claim 6, it is characterized in that, described reconstruct data read-write control module, be further used for system time and user's skew thereof according to current reconstruct data correspondence, read corresponding reconstruct data to reconstruct data memory module correspondence position, then with the data that read as original reconstructed after data export to the restructing operation processing module.
10. according to each described device in the claim 5 to 9, it is characterized in that described reconstruct data memory module meets the requirements if be further used for described restructing operation result, then Interference Cancellation is carried out in restructing operation result output; If described restructing operation result is undesirable, then the restructing operation result is exported to reconstruct data read-write control module as original reconstructed after data proceed restructing operation or directly the restructing operation result abandoned, again will before the restructing operation result export to reconstruct data read-write control module as original reconstructed after data be reconstructed computing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010580529.7A CN102065038B (en) | 2010-12-09 | 2010-12-09 | Reconstruction method and device for realizing interference cancellation in wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010580529.7A CN102065038B (en) | 2010-12-09 | 2010-12-09 | Reconstruction method and device for realizing interference cancellation in wireless communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102065038A true CN102065038A (en) | 2011-05-18 |
| CN102065038B CN102065038B (en) | 2014-09-10 |
Family
ID=44000144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010580529.7A Active CN102065038B (en) | 2010-12-09 | 2010-12-09 | Reconstruction method and device for realizing interference cancellation in wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102065038B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490828A (en) * | 2013-09-11 | 2014-01-01 | 华为技术有限公司 | Gain sharing device of interference cancellation system, method and interference cancellation system |
| CN104378172A (en) * | 2013-08-14 | 2015-02-25 | 中兴通讯股份有限公司 | Data channel interference cancellation method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103583A (en) * | 2005-01-12 | 2008-01-09 | 松下电器产业株式会社 | Wireless communication method, base station apparatus and mobile station apparatus |
| WO2009131156A1 (en) * | 2008-04-22 | 2009-10-29 | 国立大学法人大阪大学 | Wireless communication system, transmitter apparatus, receiver apparatus, and communication method |
| CN101595652A (en) * | 2007-01-29 | 2009-12-02 | 松下电器产业株式会社 | Wireless communication system, radio communication device and re-transmission controlling method |
| CN101645723A (en) * | 2008-08-06 | 2010-02-10 | 中兴通讯股份有限公司 | System and method for counteracting serial interference in time division synchronous code division multiple access technology |
| CN101800568A (en) * | 2008-12-15 | 2010-08-11 | 王伟 | Algorithm and realization of self-adaptive parallel interference cancellation multi-user detector |
-
2010
- 2010-12-09 CN CN201010580529.7A patent/CN102065038B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101103583A (en) * | 2005-01-12 | 2008-01-09 | 松下电器产业株式会社 | Wireless communication method, base station apparatus and mobile station apparatus |
| CN101595652A (en) * | 2007-01-29 | 2009-12-02 | 松下电器产业株式会社 | Wireless communication system, radio communication device and re-transmission controlling method |
| WO2009131156A1 (en) * | 2008-04-22 | 2009-10-29 | 国立大学法人大阪大学 | Wireless communication system, transmitter apparatus, receiver apparatus, and communication method |
| CN101645723A (en) * | 2008-08-06 | 2010-02-10 | 中兴通讯股份有限公司 | System and method for counteracting serial interference in time division synchronous code division multiple access technology |
| CN101800568A (en) * | 2008-12-15 | 2010-08-11 | 王伟 | Algorithm and realization of self-adaptive parallel interference cancellation multi-user detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378172A (en) * | 2013-08-14 | 2015-02-25 | 中兴通讯股份有限公司 | Data channel interference cancellation method and system |
| CN104378172B (en) * | 2013-08-14 | 2019-07-26 | 中兴通讯股份有限公司 | The method and system of data channel Interference Cancellation |
| CN103490828A (en) * | 2013-09-11 | 2014-01-01 | 华为技术有限公司 | Gain sharing device of interference cancellation system, method and interference cancellation system |
| CN103490828B (en) * | 2013-09-11 | 2015-06-17 | 华为技术有限公司 | Gain sharing device of interference cancellation system, method and interference cancellation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102065038B (en) | 2014-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10776694B2 (en) | Optimized neural network input stride method and apparatus | |
| CN102253921B (en) | Dynamic reconfigurable processor | |
| CN1952917A (en) | Memory controller and data processing system with the same | |
| CN102968390A (en) | Configuration information cache management method and system based on decoding analysis in advance | |
| CN102112973A (en) | Mediation device, mediation system, mediation method, semiconductor integrated circuit, and image processing device | |
| CN105426918B (en) | Normalize associated picture template matching efficient implementation method | |
| CN103578535A (en) | Method and apparatus for reading NAND quick-flash memory | |
| CN103778086B (en) | Coarse-grained dynamic reconfigurable system based multi-mode data access device and method | |
| CN104021097A (en) | Data transmission method and device and direct memory access | |
| CN103049408B (en) | Multi-interface SRAM (static random access memory) read-write control circuit and multi-interface SRAM read-write control method | |
| Sanny et al. | Energy-efficient median filter on FPGA | |
| CN103544111B (en) | A kind of hybrid base FFT method based on real-time process | |
| CN102065038A (en) | Reconstruction method and device for realizing interference cancellation in wireless communication system | |
| CN107544937A (en) | A kind of coprocessor, method for writing data and processor | |
| CN102780620B (en) | A kind of network processes device and message processing method | |
| CN102201817B (en) | Low-power-consumption LDPC (low density parity check) decoder based on optimization of folding structure of memorizer | |
| WO2022089429A1 (en) | Decoding method and apparatus | |
| CN111368250B (en) | Data processing system, method and equipment based on Fourier transformation/inverse transformation | |
| CN201918981U (en) | Dual-phase harvard code bus signal coding-decoding circuit | |
| CN115145842A (en) | Data cache processor and method | |
| KR102606239B1 (en) | Timing controller based on heap sorting, modem chip and integration circuit comprising thereof | |
| CN104407367B (en) | Improve the apparatus and method of satellite navigation terminal receiver baseband signal disposal ability | |
| CN202995712U (en) | Configuration information cache management system based on preliminary decoding analysis | |
| CN102769506A (en) | De-interleaving method and device for rate de-matching | |
| CN101990102B (en) | Data reading method and device on embedded equipment in video decoding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151028 Address after: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee after: ZTE Corp. Patentee after: SANECHIPS TECHNOLOGY Co.,Ltd. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corp. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20221201 Address after: 518055 Zhongxing Industrial Park, Liuxian Avenue, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: SANECHIPS TECHNOLOGY Co.,Ltd. Address before: 518057 Ministry of justice, Zhongxing building, South Science and technology road, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong Patentee before: ZTE Corp. Patentee before: SANECHIPS TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |