CN102684846B - Data processing method, data processing device and network equipment in channel demodulation process - Google Patents
Data processing method, data processing device and network equipment in channel demodulation process Download PDFInfo
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Abstract
The invention discloses a data processing method, a data processing device and network equipment in a channel demodulation process. The method comprises the following steps that: when antenna data request commands sent by a channel demodulation module according to channel demodulation processing requirements are received, and antenna data requiring the buffer memory is obtained from the received antenna data and is subjected to buffer memory according to the buffer memory data information carried in the antenna data request instructions; when interpolation calculation instructions sent by the channel demodulation module are received, the antenna data required by the interpolation calculation is read from the buffer memory antenna data according to interpolation calculation information carried in the interpolation calculation instructions; and the read antenna data is subjected to interpolation processing to obtain interpolation data used for channel demodulation. The buffer memory of the antenna data subjected to the interpolation processing is not needed, the data storage quantity is reduced, the data processing speed is accelerated, and the system processing performance is improved.
Description
Technical field
The present invention relates to communication technical field, espespecially relate to data processing method, device and the network equipment in the channel demodulation process of Wideband Code Division Multiple Access (WCDMA) (Wideband-Code Division Multiple Access, WCDMA) system.
Background technology
In a wcdma system, sampling precision by the antenna data of actual environment restriction input often can not meet the actual demand of channel demodulation, in order to obtain better performance, the antenna data of the higher sampling precision of General Requirements input, then need to carry out interpolation processing, to improve the sampling precision of antenna data to the antenna data of input.The sampling precision of the antenna data received due to antenna generally only has 2 samplings/chip, and consider the restriction of resource, during channel demodulation, General Requirements input sample precision is the antenna data of 8 samplings/chip, and this just needs to carry out the interpolation processing of 2 samplings/chip to 8 samplings/chip to antenna data.
In channel demodulation process, to the process of antenna data, be generally adopt the mode of interpolation processing, and existing interpolation process method need to carry out buffer memory to the data of 8 samplings/chip that interpolation obtains and use for during subsequent channel demodulation process after interpolation processing.Because the antenna data precision after interpolation processing is 8 samplings/chip, and interpolation processing obtains the sampled data of the same chip being same antenna, in order to the required antenna data matched can be got when meeting subsequent channel demodulation, general needs for the different chips of antenna antenna data all buffer memory process accordingly after antenna data, antenna data after the process of institute's buffer memory is generally far longer than the antenna data of channel demodulation actual needs, during to ensure channel demodulation process, the data needed for reading can be had as required.Therefore, need larger spatial cache just can complete storage, make data processing method in existing channel demodulating process can take more spatial cache, the overall performance of influential system data processing, system processing speed also may be caused to be affected.
In addition, existing interpolation process method, interpolation processing all can calculate multiple sample points certificates of the same chip of same antenna each time, even if only need the data of a sample point of each chip during actual channel demodulation process, also the data of multiple sample points of involved chip can be calculated simultaneously when actual interpolation processing, while waste system resource, also exist data processing with export very flexible, only interpolation processing desired data according to demand can not be realized, thus the system resource overhead caused due to extra data processing amount.
Summary of the invention
The embodiment of the present invention provides data processing method, device and the network equipment in a kind of channel demodulation process, what cause in order to the antenna data solved in existing channel demodulating process after buffer memory interpolation takies more buffer memory, influential system data processing speed, causes the problem that entire system performance declines.
A data processing method in data demodulation process, comprising:
When receiving the antenna data request instruction that channel demodulation module sends according to channel demodulation processing demands, according to the data cached information of carrying in described antenna data request instruction, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory;
When receiving the interpolation calculation instruction of channel demodulation module transmission, according to the interpolation calculation information of carrying in described interpolation calculation instruction, from the antenna data of buffer memory, read the antenna data needed for interpolation calculation; Interpolation processing is carried out to the antenna data read, obtains the interpolated data for channel demodulation.
A data processing equipment in channel demodulation process, comprising: command analysis module, data cache module and interpolation calculation module;
Described command analysis module, resolves for the instruction sent according to channel demodulation processing demands the channel demodulation module received; If what receive is antenna data request instruction, be then given to described data cache module; If described interpolation calculation module is then given in interpolation calculation instruction;
Described data cache module, for according to the data cached information of carrying in described antenna data request instruction, obtains the antenna data needing buffer memory and buffer memory from the antenna data received;
Described interpolation calculation module, for according to the interpolation calculation information of carrying in described interpolation calculation instruction, reads the antenna data needed for interpolation calculation from the antenna data of described data cache module buffer memory; And interpolation processing is carried out to the antenna data read, obtain the interpolated data for channel demodulation.
A kind of network equipment, comprising: the data processing equipment in antenna data receiver module, above-mentioned channel demodulation process and channel demodulation module;
Described antenna data receiver module, for receiving the antenna data that each antenna receives;
Described data processing equipment, for obtaining antenna data from described antenna data receiver module, carrying out interpolation processing, and the interpolated data after interpolation processing is supplied to described channel demodulation module;
Described channel demodulation module, for receiving the interpolated data that described data processing module provides, completes channel demodulation.
Beneficial effect of the present invention is as follows:
Data processing method in the channel demodulation process that the embodiment of the present invention provides, device and the network equipment, according to the instruction received, according to the demand of channel demodulation, obtain and buffer memory interpolation before antenna data, and for interpolation processing, avoid the interpolated data after a large amount of interpolation of buffer memory, and the memory space that the antenna data itself before interpolation takies also is far smaller than the interpolated data after interpolation, antenna data again owing to only obtaining needs according to instruction carrys out buffer memory, therefore data buffer storage amount is greatly reduced, save spatial cache, improve speed and the efficiency of system data process, thus improve systematic function.And which indicates the interpolated data that will calculate by interpolation calculation instruction, thus improve flexibility and the controllability of interpolation calculation, while reducing data amount of calculation, reduce the complexity of interpolation processing.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the data processing method in the embodiment of the present invention in channel demodulation process;
Fig. 2 is be the structural representation of data processing equipment in the embodiment of the present invention;
Fig. 3 is the detail flowchart of data handling procedure in the embodiment of the present invention;
Fig. 4 is be digital independent principle schematic in interpolation calculation process in the embodiment of the present invention;
Fig. 5 is the data cached time diagram for channel demodulation in the embodiment of the present invention;
Fig. 6 is be data buffer storage principle schematic in the embodiment of the present invention;
Fig. 7 is be the principle schematic calculating sample point according to antenna data in the embodiment of the present invention;
Fig. 8 is be the principle schematic of interpolation algorithm calculator in the embodiment of the present invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides the data processing method in a kind of channel demodulation process, the method obtains required data and buffer memory according to the needs of channel demodulation before carrying out interpolation processing to antenna data, then according to the needs of channel demodulation, required data of carrying out interpolation processing are processed, directly for channel demodulation module after process, thus avoid the buffer memory of the data after a large amount of interpolation processing, and acquisition antenna data also makes without the need to a large amount of pending antenna data of buffer memory targetedly.Be described in detail below by specific embodiment.
Embodiment one
Data processing method in the channel demodulation process that the embodiment of the present invention one provides, its flow process as shown in Figure 1, performs step as follows:
Step S11: channel demodulation module sends instruction according to channel demodulation processing demands.
Channel demodulation module can be antenna data request instruction according to the instruction that channel demodulation processing demands sends, and also can be interpolation calculation instruction.The instruction that channel demodulation module is sent by the command identification bit representation arranged is antenna data request instruction, or interpolation calculation instruction.Such as: the command identification position of setting is 0, represent that this instruction is antenna data request instruction, the command identification position of setting is 1, represents that this instruction is interpolation calculation instruction; Vice versa.
Channel demodulation module, according to the demand of channel demodulation process, determines the antenna data for interpolation calculation needing buffer memory, sends the antenna data request instruction carrying data cached information.Also can send according to the demand of channel demodulation process, determine the antenna data required for this interpolation calculation, send the interpolation calculation instruction of carrying interpolation calculation information.
Wherein, according to channel demodulation processing demands transmitting antenna data request instruction, specifically comprise: according to the user involved by data demodulates process, and this carries out the initial chip of the antenna data required for channel demodulation process and the number of chips of required antenna data to involved user, determine the buffer memory origin information comprised in data cached information and the data length that need obtain, generate antenna data request instruction and send.
Send interpolation calculation instruction according to channel demodulation processing demands, specifically comprise:
The sample point calculated needed for this interpolation calculation, and the initial chip of antenna data required for this interpolation calculation, determine the sample point label, sample point number and the reading origin information that comprise in the interpolation calculation information of carrying in interpolation calculation instruction, generate interpolation calculation instruction and also send.
Step S12: the instruction that the channel demodulation module received sends is resolved.
When receiving the instruction that channel demodulation module sends, resolve the instruction that receives, if receive be channel demodulation module sends according to channel demodulation processing demands antenna data request instruction time, execution step S13; If what receive is interpolation calculation instruction, perform step S14.
Identify that the instruction received is antenna data request instruction by the command identification position comprised in the instruction that receives, or interpolation calculation instruction.
Step S13: according to the data cached information of carrying in antenna data request instruction, obtains the antenna data needing buffer memory and buffer memory from the antenna data received.
The reception data of all antennas received are stored in antenna data receiver module, this step realizes according to the data cached information of carrying in antenna data request instruction, obtains required buffer memory and for the antenna data of interpolation calculation from antenna data receiver module.
Specifically according to the buffer memory origin information of carrying in antenna data request instruction, this initial chip needing the antenna data of buffer memory can be determined; According to the initial chip determined and the data length that need obtain, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory.Wherein, buffer memory origin information comprises Frame frame number, timeslot number and chip number.
According to the buffer memory origin information of carrying in antenna data request instruction, determine this initial chip needing the antenna data of buffer memory, specifically comprise: according to the Frame frame number, timeslot number, the chip number that comprise in buffer memory origin information, determine that this obtains the initial chip of antenna data.
Step S14: according to the interpolation calculation information of carrying in interpolation calculation instruction, read the antenna data needed for interpolation calculation from the antenna data of buffer memory.
Read origin information and sample point label, sample point number owing to carrying in interpolation calculation instruction, therefore, according to the interpolation calculation information of carrying in interpolation calculation instruction, from the antenna data of buffer memory, read the antenna data needed for interpolation calculation, specifically comprise:
According to the reading origin information of carrying in interpolation calculation instruction, determine the initial chip of the antenna data that need read; According to the sample point label carried in interpolation calculation instruction and sample point number, determine the number of chips needing to read; From the initial chip of the antenna data of the need reading determined, from the antenna data of buffer memory, read the data of each chip corresponding with the number of chips that the needs determined read.
Step S15: interpolation processing is carried out to the antenna data read, obtains the interpolated data for channel demodulation.
According to data and the interpolation coefficient pre-set of each chip comprised in the antenna data read, adopt selected interpolation calculation formula to carry out interpolation calculation, obtain the interpolated data for channel demodulation.
Step S16: the interpolated data after interpolation processing is supplied to channel demodulation module.
In conjunction with the data processing method in the channel demodulation process that the embodiment of the present invention provides, the embodiment of the present invention additionally provides the data processing equipment in a kind of channel demodulation process, and this data processing equipment can be arranged in the network equipment, such as: base station etc.Comprise the structure of the network equipment of this data processing equipment as shown in Figure 2, this network equipment comprises: the data processing equipment in channel demodulation process, antenna data receiver module and channel demodulation module.
Wherein, antenna data receiver module, for receiving the antenna data that each antenna receives.
Data processing equipment, for obtaining antenna data from antenna data receiver module, carrying out interpolation processing, and the interpolated data after interpolation processing is supplied to described channel demodulation module.
Channel demodulation module, for receiving the interpolated data that data processing module provides, completes channel demodulation.
Preferably, channel demodulation module, specifically for: according to the user involved by data demodulates process, and this carries out the initial chip of the antenna data required for channel demodulation process and the number of chips of required antenna data to described user, determine the buffer memory origin information comprised in described data cached information and the data length that need obtain, generate antenna data request instruction and send; And/or the sample point calculated needed for this interpolation calculation, and the initial chip of antenna data required for this interpolation calculation, determine the sample point label, sample point number and the reading origin information that comprise in the interpolation calculation information of carrying in interpolation calculation instruction, generate interpolation calculation instruction and also send.
Data processing equipment in above-mentioned channel demodulation process comprises: command analysis module, data cache module and interpolation calculation module.Wherein:
Command analysis module, resolves for the instruction sent according to channel demodulation processing demands the channel demodulation module received; If what receive is antenna data request instruction, be then given to data cache module; If interpolation calculation module is then given in interpolation calculation instruction.
Data cache module, for according to the data cached information of carrying in antenna data request instruction, obtains the antenna data needing buffer memory and buffer memory from the antenna data received.
Interpolation calculation module, for according to the interpolation calculation information of carrying in interpolation calculation instruction, reads the antenna data needed for interpolation calculation from the antenna data of data cache module buffer memory; And interpolation processing is carried out to the antenna data read, obtain the interpolated data for channel demodulation.
Preferably, above-mentioned data cache module, specifically for: according to the buffer memory origin information comprised in the data cached information of carrying in antenna data request instruction, determine this initial chip needing the antenna data of buffer memory; And according to the data length that the need comprised in the data cached information of carrying in the initial chip determined and antenna data request instruction obtain, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory.
Preferably, above-mentioned interpolation calculation module, specifically for: according to the reading origin information comprised in the interpolation calculation information of carrying in interpolation calculation instruction, determine the initial chip of the antenna data that need read; And according to the sample point label comprised in the interpolation calculation information of carrying in interpolation calculation instruction and sample point number, determine the number of chips needing to read; From the initial chip of the antenna data that need read, from the antenna data of buffer memory, read the data of each chip corresponding with the number of chips that the needs determined read; According to data and the interpolation coefficient pre-set of each chip comprised in the antenna data read, adopt selected interpolation calculation formula to carry out interpolation calculation, obtain the interpolated data for channel demodulation.
Embodiment two
The embodiment of the present invention two provides a specific implementation flow process of data processing in data demodulation process, and this realization flow as shown in Figure 3, comprises following process:
Step S21: channel demodulation module initiates antenna data request.
With reference to the description of above-mentioned steps S11, channel demodulation module can initiate antenna data request by transmitting antenna data request instruction, the data length that the data cached information of carrying in the antenna data request instruction of transmission comprises buffer memory origin information and need obtain.And buffer memory origin information can comprise Frame frame number, timeslot number and chip number.Therefore, the data length that antenna data request instruction comprises Frame frame number, timeslot number and chip number and need obtain, needs to comprise command identification position in addition.Then the concrete form of this antenna data request instruction can be as shown in table 1 below.
Table 1
In above-mentioned table 1, Slot, Chip generally refer to the position of antenna data in the middle of a BFN, are the timings based on whole system; Length characterizes the antenna data amount that need apply for.
Because antenna data receiver module mainly receives the antenna data of external transmission, the antenna data received by exterior antenna carries out storage in order to obtaining during follow-up use, therefore store a large amount of antenna datas in antenna data receiver module, generally include the reception data of multiple antenna.When antenna data that general antenna receives arrives antenna data receiver module, be precision be 2 samplings/chip original antenna data, wherein each chip comprises two sampling numbers according to S
0and S
1.
Be illustrated in figure 4 the digital independent principle in interpolation calculation process, comprise the principle of data buffer storage and reading, wherein in antenna receive module, its storage format of antenna data of buffer memory is the form of Fig. 4 left data storage area, each chip, comprise N*MChip the chip altogether such as Chip 0, Chip 1 ..., Chip N*M-1, wherein all comprise the data of antenna 0-k.Such as: the data ANT comprising antenna 0 in first chip Chip 0
0-S
0-S
1, the data ANT of antenna 1
1-S
0-S
1..., the data ANT of antenna k
k-S
0-S
1deng; Chip 1 ..., Chip N*M-1 comprise the data of antenna 0, antenna 1 ..., antenna k too respectively.
Step S22: command analysis module is given to data cache module after receiving antenna data request instruction.
After command analysis module receives instruction, resolve it, discovery is after antenna data request instruction, parses the information such as the Frame frame number, timeslot number and the chip that wherein carry number and the data length that need obtain, is supplied to data cache module.
Step S23: buffer memory after data cache module acquisition antenna data.
Data cache module is according to information such as the Frame frame number, timeslot number and the chip that carry in antenna data request instruction number and the data lengths that need obtain, determine to need to obtain data from which chip of which time slot of which Frame of the reception data of involved antenna, then from the initial chip determined, obtain the data of initial chip and follow-up respective numbers chip thereof according to the data length that need obtain, and buffer memory obtain antenna data for follow-up interpolation calculation time.
As shown in Figure 4, data cache module obtains each antenna data from antenna receive module.Such as: data cached part as shown in Figure 4, the data that antenna receives the 2M Chip in data are obtained.Part as data cached in intermediate table in Fig. 4 is respectively the S in Chip 0 from top to bottom
0and S
1, S in Chip 1
0and S
1..., S in Chip 2M-1
0and S
1deng the data etc. being total to 2M Chip.
Data cache module obtains antenna data and buffer memory, and by the data cached sequential for channel demodulation as shown in Figure 5, data cache module carries out the principle of data buffer storage as shown in Figure 6.
As shown in Figure 5, due to for channel demodulation module application antenna data, the minimum particle size of the antenna data of a demodulation user can be assumed to be M Chip, for the antenna data of each user once demodulation M Chip, and the antenna data of this M Chip crosses at most 2 MChip in antenna reception data, so only need the antenna data of buffer memory 2 M Chip in general data cache module.Such as first user U
firstthe data of required M Chip are [U
first-S, U
first-E], be arranged in the 1st shown in Fig. 5 and the 2nd M Chip; ...; I-th user U
firstthe data of required M Chip are [U
i-S, U
i-E]; ...; Last user U
lastthe data of required M Chip are [U
last-S, U
last-E], be arranged in latter two M Chip shown in Fig. 5.Therefore when first time obtains the antenna data of buffer memory, only need obtain the data of the 1st and the 2nd M Chip, after first user's demodulation is complete, the antenna data of the M Chip required for next user is arranged in the 2nd and the 3rd MChip, therefore, the antenna data of the 1st M Chip can be given up, and buffer memory together with the antenna data obtaining the 2nd the M Chip that the 3rd M Chip antenna data and last time obtain.
As shown in Figure 6, be data cache module with the principle schematic of the mode buffer memory antenna data upgraded that circulates, the antenna data of needed for channel demodulation 2 M Chip of each only application user carrys out buffer memory, after completing the interpolation calculation of the antenna data of a user at every turn, by in the antenna data of buffer memory, the rejection of data of unwanted M Chip, then supplements the new data needing buffer memory.The i-th-1 M Chip (i.e. Mi-1Chip), i-th M Chip (i.e. Mi Chip), the i-th+1 M Chip (i.e. Mi+1Chip), the i-th+2 M Chip (i.e. Mi+2Chip) etc. as illustrated in the drawing.When the data demodulates of a user completes, when the data of the i-th-1 M Chip shift out from data cache module, in the data shift-in data cache module of the i-th+1 M Chip; When the data demodulates of next user completes, when the data of i-th MChip shift out from data cache module, in the data shift-in data cache module of the i-th+2 M Chip; By that analogy, the data cached circulation realized as shown in Figure 6 upgrades, until complete the channel demodulation process of all users.Which is complete in active user's demodulation, shifts out when again can not call current antenna data later, and next group data of buffer memory, avoid repeatedly reading the performance loss that same section of antenna data causes.
Cache way shown in Fig. 6, by Circular buffer queue structure, the data of only one or two M Chip of buffer memory, further reduce the data volume of buffer memory, have saved memory space at every turn.Due to all users of demodulation each user M Chip antenna data required for antenna data amount can not more than a frame, so the size of buffer memory does not generally need setting more than a frame.
Step S24: channel demodulation module initiates interpolation calculation request.
With reference to the description of above-mentioned steps S11, channel demodulation module can also initiate interpolation calculation request by sending interpolation calculation instruction, and the interpolation calculation information of carrying in the interpolation calculation instruction of transmission comprises this sample point label calculated, this sample point number calculated and reads origin information.Wherein, this sample point label calculated, this sample point number calculated belong to the control information of calculating 8 sampling point, indicate calculating which or which 8 sampling points; Reading origin information indicates data cache module needs to obtain data from which chip.And read origin information and comprise a day wire size, timeslot number, chip number.Therefore can comprise a day wire size, timeslot number, chip number, this sample point label calculated and this sample point number calculated in the interpolation calculation instruction sent, need in addition to comprise command identification position.Then the concrete form of this interpolation calculation instruction can be as shown in table 2 below.
Table 2
In above-mentioned table 2, ANT field represents that current which root antenna data that should read from buffer memory carries out interpolation calculation, Slot, Chip two fields represent should from which chip of which time slot interpolation calculation.Slot, Chip in the antenna data request instruction of Slot, Chip herein and top can be inconsistent, are to arrange according to the demand of this interpolation calculation.Such as need first sample point calculating X chip, and calculative sample point label is the label of first sample point, the sample point number of required calculating is X.
According to the analysis of above-mentioned Fig. 5 and Fig. 6, the data cached data that may relate to N*M Chip, because N*M Chip may be greater than 1 Slot (1Slot=2560Chip), so indicate the time slot Slot belonging to data in antenna data request instruction and interpolation calculation instruction, it is addressing when conveniently follow-up data obtains.Note different from inside antenna data application information of Slot, Chip inside interpolation calculation information, for data buffer storage, data buffer storage space is addressed to how many time slots and adds multiple chip, then Slot, Chip inside interpolation calculation information are used in the middle of data buffer storage addressing.Sample represent current calculative be which sample point of 8 samplings.Number represents that current needs calculates the number that Sample specifies sample point, namely needs the sample point of this sample point label of 8 samplings calculating how many chips.Such as calculate the 0th sample point of 8 samplings of how many chips.
Step S25: command analysis module is given to interpolation calculation module after receiving instruction.
After command analysis module receives instruction, it is resolved, discovery is after interpolation calculation instruction, parses the information such as the sky wire size, timeslot number and the chip that wherein carry number and this sample point label that need calculate and the sample point number that need calculate, is supplied to interpolation calculation module.Enable interpolation calculation module know reading antenna data from which chip, and calculate which or which sample point.
Step S26: interpolation calculation module reads the laggard row interpolation process of data from data cache module.
Interpolation calculation module realizes the interpolated data obtaining 8 samplings after the antenna data interpolation processing of 2 samplings received by antenna, and provides the interpolated data after interpolation processing for channel demodulation module.Interpolation calculation module, after receiving interpolation calculation instruction, reads data, selects corresponding interpolation coefficient to carry out interpolation calculation from data cache module.
Adopt different interpolation algorithms according to different demands, such as, can select to adopt interpolation Processing Algorithm, namely carry out interpolation processing by following formula:
In above-mentioned formula: Z (k) is sample points certificate after interpolation processing, i.e. sample point label;
Y (i) is the sampling number certificate of the antenna data of input, wherein
represent that getting k removes
The integer part obtained with 4;
P
jm () is interpolation coefficient, j=0,1,2,3;
N be not less than zero integer.
Each interpolation coefficient P in above-mentioned formula
jm () can be as shown in table 3 below.
Table 3
| m＝7 | m＝6 | m＝3 | m＝4 | m＝3 | m＝2 | m＝1 | m＝0 | |
| P 0 | P 0(7) | P 0(6) | P 0(5) | P 0(4) | P 0(3) | P 0(2) | P 0(1) | P 0(0) |
| P 1 | P 1(7) | P 1(6) | P 1(5) | P 1(4) | P 1(3) | P 1(2) | P 1(1) | P 1(0) |
| P 2 | P 2(7) | P 2(6) | P 2(5) | P 2(4) | P 2(3) | P 2(2) | P 2(1) | P 2(0) |
| P 3 | P 3(7) | P 3(6) | P 3(5) | P 3(4) | P 3(3) | P 3(2) | P 3(1) | P 3(0) |
Adopt this interpolation algorithm to calculate 8 sample points of an antenna at every turn, all need to obtain the data of 9 sampled points in the antenna data received, wherein, 1-8 sampling number according to and P
0, P
1, P
2, P
3insert multiplied front four sample point Z (0) after interpolation processing, Z (1), Z (2), Z (3), 2-9 sampling number certificate and P
0, P
1, P
2, P
3insert multiplied to inserting rear four sample point Z (4) after treatment, Z (5), Z (6), Z (7), thus obtain 8 sample points of 8 samplings after interpolation processing.
Such as shown in Fig. 4, when needs interpolation calculation, from intermediate table and data buffer storage part, obtain the data of required each chip, shown in the form of the right, be the data for interpolation calculation of reading.The sampled point label generally calculated as required and sampled point number (Number) determine the data that will read, and are generally readings from sampled point label, read according to sampled point number.Such as: calculate front 4 sample point Z (0), Z (1), Z (2), Z (3) need to obtain front 4 Chip antenna datas, as shown in Figure 4, Chip0, Chip1 ..., Chip (Number+2), the i.e. data of 8 sampled points.Calculate rear 4 sample point Z (4), Z (5), Z (6), Z (7) need to obtain front 5 Chip antenna datas, Chip0, Chip1, Chip2 ..., Chip (Number+3), use the 2nd sampled point of the 1st Chip, the 1st sampled point of a 2-4 Chip and the 5th Chip, the data of totally 8 sampled points.
During for interpolation calculation, the mapping relations obtaining data according to the sample point that will calculate are as shown in table 4 below, and wherein sample point is set to 3 bits, map implication as shown in table 4:
Table 4
In upper table 4, Number represents the sample point number of this secondary calculation.
Be illustrated in figure 7 the principle schematic calculating sample point according to antenna data, wherein, left side is the sampled point of 92 samplings that interpolation calculation reads, and comprises the S in Chip Number, Chip Number+1, Chip Number+2, Chip Number+3
0and S
1, and the S in Chip Number+3
0, as the sampled point Y of interpolation calculation
0(0) ~ Y
0(8).P
0(0) ~ P
0(7), P
1(0) ~ P
1(7), P
2(0) ~ P
2(7), P
3(0) ~ P
3(7) be 8 interpolation coefficients, by interpolation coefficient and sampling number certificate, calculate 8 times of sample point Z (0), Z (1), Z (2), Z (3), Z (4), Z (5), Z (6), Z (7).Wherein, Y
0(0) ~ Y
0(7) respectively with P
0(0) ~ P
0(7), P
1(0) ~ P
1(7), P
2(0) ~ P
2(7), P
3(0) ~ P
3(7) front 4 sample point Z (0) of 8 samplings, Z (1), Z (2), Z (3), Y, is obtained
0(1) ~ Y
0(8) respectively with P
0(0) ~ P
0(7), P
1(0) ~ P
1(7), P
2(0) ~ P
2(7), P
3(0) ~ P
3(7) rear 4 sample point Z (4) of 8 samplings, Z (5), Z (6), Z (7), is obtained.
The principle schematic of interpolation algorithm calculator as shown in Figure 8, the sampled data of 2 samplings that input is read, 8 sampled point Y namely shown in figure
0(0) ~ Y
0(7).And input interpolation coefficient P
0(0) ~ P
0(7), P
1(0) ~ P
1(7), P
2(0) ~ P
2(7), P
3(0) ~ P
3(7), by outputting to data demodulation module after slotting taking advantage of, being processed into the data meeting channel demodulation block format and exporting to channel demodulation module.
Such as: Y
0(0) ~ Y
0and P (7)
0(0) ~ P
0(7), after inserting and taking advantage of, 8 multiplied result are added up, carries out cut position process according to actual demand, obtain the 1st sample point of 8 samplings; Y
0(0) ~ Y
0and P (7)
1(0) ~ P
1(7), after inserting and taking advantage of, 8 multiplied result are added up, carries out cut position process according to actual demand, obtain the 2nd sample point of 8 samplings: by that analogy, pass through Y
0(0) ~ Y
0and P (7)
2(0) ~ P
2(7) insert take advantage of after obtain the 3rd sample point, Y
0(0) ~ Y
0and P (7)
3(0) ~ P
3(7) insert take advantage of after calculate the 4th sample point.Then Y is inputted
0(1) ~ Y
0(8), then continue calculate.
Figure 8 shows that the sample point of 8 samplings calculates schematic diagram, because sample point is calculated as stream treatment, a clock can calculate 8 sampling sample points, for the sample point of the Number in interpolation calculation instruction, then need to expend Number clock, as processing speed need be improved, increase corresponding resource.Number the sample point calculated needs to carry out format combination according to the input of channel demodulation module and is transferred to data channel demodulation module.
Step S27: the interpolated data obtained after interpolation processing is supplied to channel demodulation module by interpolation calculation module.
Interpolation calculation module packages to the pattern of the input that the interpolated data obtained after interpolation calculation requires according to channel demodulation module, exports to data channel demodulation module.
Data processing method in the channel demodulation process that the embodiment of the present invention provides and device, according to the demand of channel demodulation process, transmitting antenna data request instruction, carrys out the antenna data of buffer memory for interpolation calculation, according to the demand of channel demodulation process, send interpolation calculation instruction, the antenna data of buffer memory is utilized to carry out interpolation calculation, be supplied to when channel demodulation module carries out channel demodulation process and use, the antenna data of the method buffer memory 2 sampling before interpolation processing, read when needs interpolation calculation, and without the need to the antenna data of 8 samplings after buffer memory interpolation processing, and be 2 sampling data before interpolation processing, 8 sampling data after interpolation processing, by before interpolation processing data cached avoid interpolation after data cached shared a large amount of buffer memory capacity, data volume buffer memory capacity is reduced to original 1/4.
In addition, data cache module is according to antenna data request instruction, request antenna data carrys out buffer memory, the antenna data that interpolation calculation module obtains buffer memory according to interpolation calculation instruction calculates interpolated data, thus the history antenna data that buffer memory is a large amount of is not needed again, also do not need the data after a large amount of interpolation calculation of buffer memory to meet the requirement of channel demodulation process, therefore, it greatly reduces the effect highly significant of buffer data size.
And due to interpolation calculation instruction can specify arbitrarily need to calculate which or which 8 by sample point, therefore realize calculating any one sample point in 8 samplings of specifying by the relevant information in configuration interpolation calculation instruction, sample point calculate more flexible, digital independent and interpolation calculation logical design more simple.Can only calculate for certain sample point of single antenna, like this when gathering antenna data, only need 8 sample points dispatching certain root antenna, such computational efficiency is higher, and does not need buffer memory antenna data.
Simultaneously, can also refer to some sample points that the same label of multiple chip in same antenna calculated by devise a stratagem, avoid and other labelled sample points of each chip must be calculated as in the state of the art, thus decrease the data volume of calculating, obtain better sample point computational flexibility.The label that such as, will calculate the 0th and the 1st these two chips in prior art is the sample point Z (0) of 0, then need these seven sample points of the Z of these two chips (1) ~ Z (7) also to calculate simultaneously, and method of the present invention, the label that then only can calculate these two chips is the sample point Z (0) of 0, while reducing data amount of calculation, reduce the complexity of interpolation processing, improve systematic function.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (12)
1. the data processing method in data demodulation process, is characterized in that, comprising:
When receiving the antenna data request instruction that channel demodulation module sends according to channel demodulation processing demands, according to the data cached information of carrying in described antenna data request instruction, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory;
When receiving the interpolation calculation instruction of channel demodulation module transmission, according to the interpolation calculation information of carrying in described interpolation calculation instruction, from the antenna data of buffer memory, read the antenna data needed for interpolation calculation; Interpolation processing is carried out to the antenna data read, obtains the interpolated data for channel demodulation.
2. the method for claim 1, is characterized in that, according to channel demodulation processing demands transmitting antenna data request instruction, specifically comprises:
According to the user involved by data demodulates process, and this carries out the initial chip of the antenna data required for channel demodulation process and the number of chips of required antenna data to described user, determine the buffer memory origin information comprised in described data cached information and the data length that need obtain, generate antenna data request instruction and send.
3. method as claimed in claim 2, is characterized in that, according to the data cached information of carrying in described antenna data request instruction, obtains the antenna data needing buffer memory and buffer memory, specifically comprise from the antenna data received:
According to the buffer memory origin information of carrying in described antenna data request instruction, determine this initial chip needing the antenna data of buffer memory;
According to the initial chip determined and the data length that need obtain, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory.
4. method as claimed in claim 3, it is characterized in that, described buffer memory origin information comprises Frame frame number, timeslot number and chip number;
According to the buffer memory origin information of carrying in described antenna data request instruction, determine specifically to comprise this initial chip needing the antenna data of buffer memory:
According to the described Frame frame number, timeslot number and the chip number that comprise in described buffer memory origin information, determine that this obtains the initial chip of antenna data.
5. the method as described in as arbitrary in claim 1-4, is characterized in that, sends interpolation calculation instruction, specifically comprises:
The sample point calculated needed for this interpolation calculation, and the initial chip of antenna data required for this interpolation calculation, determine the sample point label, sample point number and the reading origin information that comprise in the interpolation calculation information of carrying in interpolation calculation instruction, generate interpolation calculation instruction and also send.
6. method as claimed in claim 5, is characterized in that, according to the interpolation calculation information of carrying in described interpolation calculation instruction, read the antenna data needed for interpolation calculation, specifically comprise from the antenna data of buffer memory:
According to the reading origin information of carrying in described interpolation calculation instruction, determine the initial chip of the antenna data that need read;
According to the sample point label carried in described interpolation calculation instruction and sample point number, determine the number of chips needing to read;
From the initial chip of the described antenna data that need read, from the antenna data of buffer memory, read the data of each chip corresponding with the number of chips that the needs determined read.
7. method as claimed in claim 6, is characterized in that, the described antenna data to reading carries out interpolation processing, obtains the interpolated data for channel demodulation, specifically comprises:
According to data and the interpolation coefficient pre-set of each chip comprised in the antenna data read, adopt selected interpolation calculation formula to carry out interpolation calculation, obtain the interpolated data for channel demodulation.
8. the data processing equipment in channel demodulation process, is characterized in that, comprising: command analysis module, data cache module and interpolation calculation module;
Described command analysis module, resolves for the instruction sent according to channel demodulation processing demands the channel demodulation module received; If what receive is antenna data request instruction, be then given to described data cache module; If described interpolation calculation module is then given in interpolation calculation instruction;
Described data cache module, for according to the data cached information of carrying in described antenna data request instruction, obtains the antenna data needing buffer memory and buffer memory from the antenna data received;
Described interpolation calculation module, for according to the interpolation calculation information of carrying in described interpolation calculation instruction, reads the antenna data needed for interpolation calculation from the antenna data of described data cache module buffer memory; And interpolation processing is carried out to the antenna data read, obtain the interpolated data for channel demodulation.
9. device as claimed in claim 8, is characterized in that, described data cache module, specifically for:
According to the buffer memory origin information comprised in the data cached information of carrying in described antenna data request instruction, determine this initial chip needing the antenna data of buffer memory;
According to the data length that the need comprised in the data cached information of carrying in the initial chip determined and described antenna data request instruction obtain, from the antenna data received, obtain the antenna data needing buffer memory and buffer memory.
10. device as claimed in claim 8 or 9, is characterized in that, described interpolation calculation module, specifically for:
According to the reading origin information comprised in the interpolation calculation information of carrying in described interpolation calculation instruction, determine the initial chip of the antenna data that need read;
According to the sample point label comprised in the interpolation calculation information of carrying in described interpolation calculation instruction and sample point number, determine the number of chips needing to read;
From the initial chip of the described antenna data that need read, from the antenna data of buffer memory, read the data of each chip corresponding with the number of chips that the needs determined read;
According to data and the interpolation coefficient pre-set of each chip comprised in the antenna data read, adopt selected interpolation calculation formula to carry out interpolation calculation, obtain the interpolated data for channel demodulation.
11. 1 kinds of network equipments, is characterized in that, comprising: antenna data receiver module, as arbitrary in claim 8-10 as described in channel demodulation process in data processing equipment and channel demodulation module;
Described antenna data receiver module, for receiving the antenna data that each antenna receives;
Described data processing equipment, for obtaining antenna data from described antenna data receiver module, carrying out interpolation processing, and the interpolated data after interpolation processing is supplied to described channel demodulation module;
Described channel demodulation module, for receiving the interpolated data that described data processing module provides, completes channel demodulation.
12. network equipments as claimed in claim 11, is characterized in that, described channel demodulation module, specifically for:
According to the user involved by data demodulates process, and this carries out the initial chip of the antenna data required for channel demodulation process and the number of chips of required antenna data to described user, determine the buffer memory origin information comprised in described data cached information and the data length that need obtain, generate antenna data request instruction and send; And/or
The sample point calculated needed for this interpolation calculation, and the initial chip of antenna data required for this interpolation calculation, determine the sample point label, sample point number and the reading origin information that comprise in the interpolation calculation information of carrying in interpolation calculation instruction, generate interpolation calculation instruction and also send.
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| CN1980086A (en) * | 2005-12-08 | 2007-06-13 | 中兴通讯股份有限公司 | Method for random accessing message demodulation |
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| US7039096B2 (en) * | 2001-11-16 | 2006-05-02 | Samsung Electronics Co., Ltd. | Method and system for resource sharing between demodulating paths of a rake receiver |
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| CN1523767A (en) * | 2003-02-20 | 2004-08-25 | 世代通信（深圳）有限公司 | An intermediate frequency signal processing method and circuit |
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