CN102377719A - Data symbol orthogonal processing method and device - Google Patents
Data symbol orthogonal processing method and device Download PDFInfo
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- CN102377719A CN102377719A CN201010260809XA CN201010260809A CN102377719A CN 102377719 A CN102377719 A CN 102377719A CN 201010260809X A CN201010260809X A CN 201010260809XA CN 201010260809 A CN201010260809 A CN 201010260809A CN 102377719 A CN102377719 A CN 102377719A
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Abstract
The invention discloses a data symbol orthogonal processing method which is used for grouping code division multiplexing data ports. The method comprises the following steps of: distributing an orthogonal code for one of groups of ports, distributing orthogonal codes for other groups of ports in different manners and multiplying the orthogonal codes of the other groups of different ports according to different phases of factor weights; and carrying out orthogonal processing on data on each port in each group. The invention simultaneously discloses a data symbol orthogonal processing device which comprises a grouping unit, a distribution unit, a first processing unit and a second processing unit, wherein the grouping unit is used for grouping the code division multiplexing data ports; the distribution unit is used for distributing the orthogonal code for one of the groups of ports and also distributing the orthogonal codes for the other groups of ports in different manners; the first processing unit is used for multiplying the orthogonal codes of the other groups of different ports according to the different phases of factor weights; and the second processing unit is used for carrying out the orthogonal processing on the data on each port in each group according to the orthogonal codes distributed by the distribution unit. With the adoption of the data symbol orthogonal processing method and the data symbol orthogonal processing device, the data on the ports among the groups are completely orthogonal to avoid the effect of interference on channel estimation.
Description
Technical field
The present invention relates to data symbol orthogonal processing technology, relate in particular to orthogonal processing method and the device of a kind of demodulation pilot frequency symbol (DMRS, Demodulation Reference Signal).
Background technology
The high-order multi-antenna technology is one of key technology of senior Long Term Evolution (LTE-A or LTE-Advanced, Long Term Evolution Advanced) system, in order to improve system transmissions speed.For the channel status of realizing introducing behind the high-order multi-antenna technology is measured and data demodulates; The LTE-Advanced system has defined two types of frequency pilot signs respectively: data demodulates frequency pilot sign (DMRS; Demodulation Reference Signal) and channel status measurement pilot frequency symbol (CSI-RS; Channel State Information-Reference Signal); Wherein, the demodulation pilot frequency symbol is the reference symbol that is used for Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel) demodulation.The measurement pilot frequency symbol is to be used for (CSI; Channel State Information) reference symbol of measuring; Be mainly used in channel quality indication (CQI; Channel Quality Indicator), reporting of pre-coding matrix indication (PMI, Precoding Matrix Indicator), stratum's indication information such as (RI, Rank Indicator).The structure of two types of reference signals can be used for supporting like multipoint cooperative (CoMP, Coordinated Multi-Point), the new technical feature of LTE-A such as spatial reuse.
At Long Term Evolution (LTE; Long Term Evolution) in the system; What adopt is that public reference signal (CRS, Common Reference Signal) carries out pilot measurement, and just all users use common pilot to carry out channel estimating; This public reference signal need the extra notice receiving terminal of emitting side to the emission The data which kind of pretreatment mode, this will cause resource overhead bigger; In addition, in the many input and output of multi-user (MU-MIMO, Multi-user Multiple Input Multiple Output) system,, can't realize the quadrature of pilot tone, therefore be unable to estimate interference because a plurality of UE are using identical CRS.
In the LTE-A system,, witness mark symbol (CSI-RS) and demodulation reference mark (DMRS) are separately designed in order to reduce the expense of pilot tone; The pretreatment mode that demodulated reference signal is identical with The data; Therefore demodulation reference mark, can adjust expense according to order information adaptively according to available order (rank) the information mapping reference symbol of dispatched users respective channels simultaneously; In the lower situation of order, can reduce expense greatly like this.
In current discussion; The detail of design of demodulation reference mark is confirmed; As shown in Figure 1; Wherein when the employed rank number of descending transmission smaller or equal to 2 the time; Only use
among Fig. 1 corresponding Resource Unit (RE, Resource Element) to be used to carry DMRS and transmit, and to adopt length be 2 orthogonal code (OCC; Orthogonal Cover Code) on time domain, carries out scrambling on adjacent two OFDMs (OFDM, Orthogonal Frequency Division Multiplexing) symbol.When the rank number more than or equal to 3 and smaller or equal to 4 the time, use two groups to carry DMRS like
among Fig. 1 and
corresponding Resource Units.Wherein but to go up the multiplexing DMRS number of layers of maximum quadrature CDM be 2 for every group of RE, and every group is adopted length on two adjacent on time domain OFDM symbols be that 2 orthogonal code is carried out the quadrature scrambling.And when the rank number greater than 4 the time; Use two groups of Resource Units to carry DMRS like
among Fig. 1 and
correspondence; Every group on time domain adjacent two OFDM symbols to adopt length be that 4 OCC sign indicating number carries out the quadrature scrambling, but and every group of RE to go up the multiplexing DMRS number of layers of maximum quadrature CDM be 4.
Carrier wave sketch map when Fig. 2 is no frequency deviation and timing error, Fig. 3 is the carrier wave sketch map when having frequency deviation or timing error, like Fig. 2 and shown in Figure 3; Through comparison diagram 2 and Fig. 3; Based on above-mentioned DMRS pattern,, can produce inter-carrier interference if having Doppler frequency shift and timing error problem.As shown in Figure 2; And if the orthogonal code on two groups is not done any processing; For example corresponding port adopts identical OCC sign indicating number, when carrying out despreading, because the existence of inter-carrier interference; Interference between the port of corresponding identical OCC sign indicating number will be bigger, thereby influence the demodulation reference mark channel estimated accuracy.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of data symbol orthogonal processing method and device, can make the complete quadrature of data on the port of the DMRS that adopts different code division multiplexings, reduces the interference between the data on the port of different DMRS greatly.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of data symbol orthogonal processing method is divided into groups to the code division multiplexing FPDP; Said method also comprises:
To one group of port assignment orthogonal code wherein,, all the other group ports distribute orthogonal code with one group of different mode of port of distributing orthogonal code for adopting; And the orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights;
With distributed orthogonal code the data on each port in each group are carried out orthogonal processing.
Preferably, to one group of port assignment orthogonal code wherein, with one group of mode that port is different of distributing orthogonal code, by all the other group port assignment with distributed orthogonal code to be specially:
Be one group of each port { p wherein
I, 0, p
I, 1..., p
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C;
From C, select orthogonal code { d with different orders for each port in all the other groups
0d
1D
K, d
k∈ C; Wherein, i is an integer, is the group number of dividing into groups; L is an integer, and L+1 is the maximum number of FPDP in each group; K is an integer, the orthogonal code number that K+1 distributes for the group inner port.
Preferably, { d
0d
1D
KIn before
Individual orthogonal code belongs to { c
0c
1C
KAfter
Individual orthogonal code, { d
0d
1D
KIn after
Individual orthogonal code belongs to { c
0c
1C
KBefore
Individual orthogonal code; Wherein,
Expression rounds up.
Preferably, the orthogonal code of different port multiplied each other with out of phase factor weights be specially:
The orthogonal code corresponding to the different port of all the other groups multiplies each other with the different phase factor
.
Preferably, said method also comprises:
Each group in corresponding all the other groups; On the different resources position, with the different phase factor
all of the port in organizing is multiplied each other, wherein j representes j resource location.
Preferably, during the choosing of the weights factor, the vector that separately weights corresponding RE on constituted of each port on same OFDM symbol is not different on the same group.
Further optional; When the data on each port in the group are carried out code division multiplexing on time orientation; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: on the different sub carrier of carrying data, each group uses different phase factor
that the orthogonal code of ports all in organizing is multiplied each other.
Further optional; When the data on each port in the group are carried out code division multiplexing on frequency direction; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: carrying on different OFDM (OFDM) symbol/time slot of data, each group multiplies each other to the orthogonal code of organizing interior all of the port with the different phase factor
.
Further optional; When the data on each port in the group are carried out code division multiplexing on time, frequency two-dimensional directional; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: piecemeal is carried out in the time-frequency position to carrying data; On adjacent piece, each group multiplies each other with the orthogonal code of the different phase factor
to all of the port in organizing.
Preferably, said data are demodulated reference signal or channel measurement reference symbol.
A kind of data symbol orthogonal processing device comprises grouped element, allocation units, first processing unit and second processing unit; Wherein,
Grouped element is used for the port of code division multiplexing data is divided into groups;
Allocation units are used for one group of port assignment orthogonal code wherein, for all the other group ports to distribute orthogonal code with one group of different mode of port of distributing orthogonal code;
First processing unit is used for the orthogonal code of the different port of all the other groups is multiplied each other with out of phase factor weights;
Second processing unit is used for orthogonal code that said allocation units are distributed the data on each each port of group being carried out orthogonal processing.
Preferably, said allocation units further are one group of each port { p wherein
I, 0, p
I, 1..., p
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C;
From C, select orthogonal code { d with different orders for each port in all the other groups
0d
1D
K, d
k∈ C; Wherein, i is an integer, is the group number of dividing into groups; L is an integer, and L+1 is the maximum number of FPDP in each group; K is an integer, the orthogonal code number that K+1 distributes for the group inner port.
Preferably, { d
0d
1D
KIn before
Individual orthogonal code belongs to { c
0c
1C
KAfter
Individual orthogonal code, { d
0d
1D
KIn after
Individual orthogonal code belongs to { c
0c
1C
KBefore
Individual orthogonal code; Wherein,
Expression rounds up.
Preferably; Said first processing unit further, the orthogonal code corresponding to the different port of all the other groups multiplies each other with the different phase factor
.
Preferably; Said first processing unit further; Each group in corresponding other groups; On the different resources position, with the different phase factor
all of the port in organizing is multiplied each other, wherein j representes j resource location.
Preferably, when the data on each port in the group were carried out code division multiplexing on time orientation, said first processing unit on the different sub carrier of carrying data, was respectively organized and is used the orthogonal code of different phase factor pair group inner port to multiply each other further.
Preferably; When the data on each port in the group are carried out code division multiplexing on frequency direction; Said first processing unit is carrying on the different OFDM symbol/time slot of data further, and each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
Preferably; When the data on each port in the group are carried out code division multiplexing on time, frequency two-dimensional directional; Said first processing unit further; Piecemeal is carried out in time-frequency position to carrying data, and on adjacent piece, each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
Preferably, said data are demodulated reference signal.
Among the present invention, divide into groups, and each FPDP in a group is wherein distributed orthogonal code sets through FPDP to code division multiplexing; And, can guarantee the data strict orthogonal on each port to all the other set of dispense and the group different orthogonal codes group of distributing orthogonal code; When the FPDP in the present invention can realize not on the same group carries out despreading on two or more quadrature groups, the complete quadrature of the data on the port between the group, thus avoid inter-carrier interference or intersymbol interference influence to channel estimating.Simultaneously, when subscriber equipment (UE, User Equipment) adopts the one dimension despreading to carry out channel estimating, also can obtain the inter-carrier interference compression effects of part, thereby more can be applicable to various channel estimation methods.Considered to multiply each other owing to the present invention in addition with the different weights factors; Can be so that orthogonal code when mapping; On the same group the orthogonal code stacked system to pre-code data on specific resource unit group separately is not different, thereby reduces the influence of distinct symbols power difference to Designing power amplifier.
Description of drawings
Fig. 1 is the carrying sketch map of demodulation reference mark in the subframe;
Carrier wave sketch map when Fig. 2 is no frequency deviation and timing error;
Fig. 3 is the carrier wave sketch map when having frequency deviation or timing error;
Fig. 4 is for the present invention is based on the quadrature mapping sketch map of two-phase PSK (BPSK, Binary Phase Shift Keying) modulation system;
Fig. 5 is during based on the mapping mode among Fig. 4, and the orthogonal code on two groups of each comfortable every group of corresponding adjacent DMRS carrier waves of port is used sketch map;
Fig. 6 is the orthogonal code mapping sketch map when the present invention is based on the alphabet of high order modulation;
Fig. 7 is the composition structural representation of data symbol orthogonal processing device of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below lift embodiment and, the present invention is further explained with reference to accompanying drawing.
Basic thought of the present invention is inter-carrier interference to be reduced or elimination fully.When the present invention adopts different channel estimating modes, have different inter-carrier interference compression effectiveness, and under specific channel estimating mode, can eliminate inter-carrier interference fully the not influence of the channel estimating of the port between on the same group.Data symbol orthogonal method of the present invention specifically may further comprise the steps:
Step 1: transmit leg produces the demodulation reference mark sequence on the same group different port not respectively; Here mainly be not each port set of carrying out code division multiplexing on the same group; For example; During the code division multiplexing mode, carry out the code division multiplexing port and be divided into one group respectively, carry out the corresponding different group of port of time-division or frequency division multiplexing.Technical scheme of the present invention mainly is that what to be directed against is the different grouping data of code division multiplexing.Among the present invention, carry out the identical basic scrambler sequence of employing between the port (port in the group of same sign indicating number branchs mode) of code division multiplexing, and carry out scrambling with different orthogonal codes (OCC) based on this basic sequence.
In the above-mentioned steps 1, concrete, at first the demodulation reference mark port to code division multiplexing divides into groups, and note is made G
i, i>=0, every group of G
iThe port note of code division multiplexing make { p
I, 0p
I, 1P
I, L; Do not adopt frequency division and/or time division multiplexing mode between on the same group the demodulation reference mark port.
Be a set of dispense orthogonal code wherein, other groups are distributed orthogonal code according to the mode different with the group of distributing orthogonal code, and the orthogonal code of different port in other groups is multiplied each other with out of phase factor weights.Be specially:
First-selection is each port { p in a group
I, 0p
I, 1P
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C.
From C, select orthogonal code according to the order different for each DMRS port in other groups with above-mentioned group orthogonal code, wherein, between wantonly two groups, second group orthogonal code selecting sequence and first group of different { d
0d
1D
K, d
k∈ C.Certainly, best mode is that employed orthogonal code is all inequality between any one group.That is to say,, select the orthogonal code of the order different for use as this group DMRS port with the aforementioned groupings orthogonal code for each group DMRS port.
The orthogonal code corresponding to the part or all of port of other groups adopts phase factor and orthogonal code to multiply each other and is meant, uses weights
Multiply each other with orthogonal code, expression to i carrier wave or symbol or time-frequency piece with different phase factor θ
I, kHandle, not on the same group the corresponding θ of different port
I, kCan be identical, also can be different.Here orthogonal code is the vector of 1 * K or K * 1, and K is the positive integer greater than 1, θ
I, kIt is 1 * 1 vector.Here can remember phase factor in the work group.
The phase factor of other groups and distribute between the phase factor of group of orthogonal code, can be to multiply by+1 or-1 relation.
Alternatively, further, on the same group all of the port not, uses the orthogonal code of different cycle phase factor pair all of the ports to handle, phase factor is remembered phase factor between the work group here, is specially:
When each port in the group carried out code division multiplexing on time orientation, be meant not handling with the cycle phase factor of different orthogonal sign indicating number on the same group: on different demodulation reference mark carrier waves, each group was handled with the different phase factor.For example for demodulation reference mark carrier wave i, i+1 ..., i+N uses phase place e to the 1st group
J (i2 π)Handle, use e for the 2nd group
J (i π), the n group is used e
J (i π/n)
When each port in the group carries out code division multiplexing on frequency direction, be meant: on different carrying demodulation reference mark OFDM symbol/time slots, handle with the different phase factor in each group not handling with the different cycle phase factors on the same group.
When each port in the group time/when carrying out code division multiplexing on the frequency two-dimensional directional; Be meant not handling with the different cycle phase factors on the same group: piecemeal is carried out in the time-frequency position to carrying demodulation reference mark; On adjacent piece, each group is handled with the different phase factor.
Wherein, when having only two whens group, the principle that first group and second group of phase factor are chosen be in the following mode any one or multiple:
As first group of employing e
J (i θ)When handling, second group of employing (1)
iE
J (i θ)
As first group of employing e
J (i θ)When handling, second group of employing
As first group of employing e
J (i θ)When handling, second group of employing
The value of n is the positive integer more than or equal to 4.
When having a plurality of groups, for example organizing number is m, produces m dimension DFT (DFT, Discrete Fourier Transform) matrix, joins the different rows or the different lines of DFT matrix for different component.
Step 2: the demodulation reference mark sequence that produces in the abovementioned steps 1 is mapped on the corresponding Resource Unit according to predetermined pilot tone pattern; Wherein, The resource location that carries out the corresponding demodulation reference mark mapping of the port (same group in port) of code division multiplexing is identical, and the demodulation reference mark of each port is mapped to respectively on the pairing layer of port.The not interior on the same group corresponding demodulation reference mark of port is mapped on the different resources unit.
Step 3: the demodulation reference mark precoding weights identical with the PDSCH The data to after the mapping carry out precoding processing, and produce the data on the different antennae port, on the different antennas port, launch.
In above-mentioned, the phase place weights factor is meant to have e
J θThe factor of form, wherein, θ representes phase value.Orthogonal code in above-mentioned can be quadrature mask (Orthogonal Cover Code).
Below, further illustrate the essence of technical scheme of the present invention through embodiment.
Embodiment one
In this embodiment, illustrated quadrature mapping method based on BPSK modulomenter (promptly+1 with-1).Fig. 4 is for the present invention is based on the quadrature mapping sketch map of two-phase PSK (BPSK, Binary Phase Shift Keying) modulation system, and is as shown in Figure 4, and with two code division multiplexing groups, maximum 4 ports of each code division multiplexing group are that example describes among the figure.In order to realize quadrature, at the port set G of each code division multiplexing based on each Physical Resource Block (PRB, PhysicalResource Block) time-frequency bidimensional
iI ∈ 0, the port { p in the 1}
I, 0p
I, 1P
I, L, L is 3 to the maximum, respectively through employing orthogonal code a, and b, c, d handles.A wherein; B; C, d represent the different lines of walsh matrix
respectively.In the practical application, also can be other different orthogonal matrixes, for example based on matrix of DFT etc.
In order to realize quadrature, at first in first group, when being different port { p based on each port on the time-frequency two-dimensional direction of each PRB
0,0p
0,1P
0,3The distribution orthogonal code is respectively { a on the time domain direction of 2i DMRS subcarrier; B; C; D}; On the time domain direction of 2i+1 DMRS subcarrier, distribute { a for corresponding port;-b;-c; D}, wherein, i is a natural number; Port data is as among the figure
Shown Resource Unit distributes.Under this processing mode, can realize the two-dimensional quadrature on time domain and frequency domain direction between each port in each code division multiplexing group.Need to prove; In the description of specification part; Be based on port and describe that orthogonal code distributes, be based on each RE signal in the drawings, be characterized by each port vector that the corresponding factor constitutes on this RE on each RE; Its corresponding relation is: when the orthogonal code vector of each port corresponds respectively to orthogonal matrix capable, then be listed as corresponding to each RE and go up the orthogonal code vector that forms.
Further, for based in each code division multiplexing group between each port the time-frequency two-dimensional quadrature time, can be when having inter-carrier interference; Further reduce or eliminate not on the same group between interference; Can consider not adopting the different orthogonal codes distribution principle on the same group, for example, when group 1 adopts the above-mentioned orthogonal code method of salary distribution; On the time domain direction of 2i corresponding DMRS subcarrier of second group, be demodulation reference mark port { p
1,0p
1,1P
1,3Distribution orthogonal code { d; C; B; A}, and on second group of 2i+1 corresponding DMRS subcarrier, adopt { d;-c;-b; A}.
The present invention can make the further randomization of carrying out peak power between two group, makes simultaneously can make to eliminate fully in two groups and disturb.The present invention; Can also handle with the different phase factor through OCC sign indicating number, for example, the orthogonal code of the 2nd group of corresponding each port correspondence carried out multiplying each other with phase factor the different port in second group; After the processing of multiplying each other, the port { p of second group of 2i corresponding DMRS subcarrier
1,0p
1,1P
1,3Distribute orthogonal code to become { d;-c;-b; A}, and the orthogonal code on 2i+1 DMRS subcarrier becomes { d;-c;-b;-a}, each port this moment corresponding orthogonal code on 8 RE is as shown in Figure 5 respectively, and therefore the corresponding complete quadrature of orthogonal code of port between this moment two groups can eliminate interference fully.
Need to prove that only provided a kind of signal among the above-mentioned figure, the present invention is last to be not limited to this, provides more general mode below, for first group, as port { p
0,0p
0,1P
0,3The distribution orthogonal code is respectively { c on the time domain direction of its corresponding 2i DMRS subcarrier
0c
1c
2c
3The time, c
iBe row vector; Matrix [c
0c
1c
2c
3] from left to right be respectively a, b, c, d by row; On the time domain direction of 2i+1 DMRS subcarrier of correspondence, distribute orthogonal code and can be [± c, ± d, ± a, ± b] or [± d for corresponding port; ± c, ± b, ± a] each row successively of any matrix in 32 square formations constituting, be expressed as { z
0z
1z
2z
3.For second group, on the time domain direction of its 2i corresponding DMRS subcarrier, be demodulation reference mark port { p simultaneously
1,0p
1,1P
1,3Distribute orthogonal code can be { ± c
3± c
2± c
1± c
0Or { ± c
2± c
3± c
0± c
1In have any one of following characteristic:
Suppose that the OCC sign indicating number that each port of second group disposes is { s on 2i corresponding DMRS subcarrier of this group
0s
1s
2s
3, { s then
0s
1s
2s
3Have following characteristic: if matrix [s
0s
1s
2s
3] the 1st row be respectively to last row: [x, y, z, t], then need satisfy x, y ∈ { ± c
2, ± c
3, z, t ∈ { ± c
0, ± c
1.
Orthogonal code on second group of 2i+1 corresponding DMRS subcarrier is designated as { q
0q
1q
2q
3.{ q
0q
1q
2q
3Satisfy following restriction relation:
Constraint 1: matrix [q
0q
1q
2q
3] preceding two the row e, f ∈ ± a, ± b}, the back two the row g, h ∈ { ± c, ± d}
Constraint 2: matrix [[s
0, q
0]; [s
1, q
1]; [s
2, q
2]; [s
3, q
3]] and matrix [[c
0, z
0]; [c
1, z
1]; [c
2, z
2]; [c
3, z
3]] mutually orthogonal.
Embodiment two
In this embodiment; Provided based on the orthogonal code mapping mode under the high-order modulating; Under the mode that provides in this embodiment; On the basis of group inner code word mapping, realize the inter-carrier interference compression effects through different OCC mappings between the group, do not change the effect that design brings in the group simultaneously.In this embodiment; The demodulation reference mark port of same code division multiplexing is selected identical OCC sign indicating number at it on to the different DMRS subcarriers of correspondence; But, on frequency domain direction, respectively same group different port multiply by the different phase weights factor in order to realize the quadrature on the time-frequency two-dimensional direction.Fig. 6 is the orthogonal code mapping sketch map when the present invention is based on the alphabet of high order modulation, and is as shown in Figure 6, under the mapping mode that has distributed the OCC sign indicating number, on different carrier positions, to port p
0,0And p
1,0Multiply by phase factor e
J (2 π i), to port p
0,1And p
1,1Multiply by phase factor e
J (π i), to port p
0,2And p
1,2Multiply by phase factor e
J (2 π i/3), to port p
0,3And p
1,3Multiply by phase factor e
J (π i/3)After above-mentioned processing, every group of interior each port 3 carrier waves on frequency domain, the equivalent orthogonal sign indicating number on the time domain adjacent OFDM symbol is respectively [1 1111 1], [1-1 1-1 1-1], [1 ω
2ω
-21 ω
2ω
-2], [1 ω ω
2-1-ω-ω
2], mutually orthogonal between 4 ports of this moment in one group.But owing to do not adopt in a like fashion between on the same group each port, therefore for the compression effectiveness that has no carrier-in-interference between two groups.
In this example,, on above-mentioned basis, different groups is adopted different OCC allocation criteria, simultaneously second group handled with the different phase factor at different port for the interference between eliminating not on the same group.For example shown in Figure 6: the OCC sign indicating number that each port distributes on its each corresponding carrier wave in first group is respectively { a; B; C; D}, then the different port in second group can distribute { d; C; B; A}, on while 2i carrier wave, the OCC sign indicating number of each port assignment is { d;-c;-b; During a}, then the OCC sign indicating number of each port assignment is { d on 2i+1 carrier wave; C; B;-a}.Through this processing, not only when bidimensional is estimated, can eliminate inter-carrier interference fully, simultaneously on the one dimension direction, during despreading (frequency domain or time domain), also can partly eliminate interference.Owing to the difference of the mapping mode between two groups, therefore can also play the randomized effect of power between group in addition.
Need to prove, equally only provided a kind of signal among the figure, in practical application, for first group, as port { p
0,0p
0,1P
0,3The distribution orthogonal code is respectively { a on the time domain direction of its each corresponding DMRS subcarrier; B; C; During d},, on the time domain direction of its each corresponding DMRS subcarrier, be demodulation reference mark port { p for second group
1,0p
1,1P
1,3Distribute orthogonal code can for ± { d ,-c ,-b, any one among the a}.
Fig. 7 is the composition structural representation of data symbol orthogonal processing device of the present invention, and as shown in Figure 7, data symbol orthogonal processing device of the present invention comprises grouped element 70, allocation units 71, first processing unit 72 and second processing unit 73; Wherein,
Grouped element 70 is used for the port of code division multiplexing data is divided into groups;
Allocation units 71 are used for one group of port assignment orthogonal code wherein, for all the other group ports to distribute orthogonal code with one group of different mode of port of distributing orthogonal code;
First processing unit 72 is used for the orthogonal code of the different port of all the other groups is multiplied each other with out of phase factor weights;
Second processing unit 73 is used for orthogonal code that said allocation units are distributed the data on each each port of group being carried out orthogonal processing.
Allocation units 71 further are one group of each port { p wherein
I, 0, p
I, 1..., p
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C;
From C, select orthogonal code { d with different orders for each port in all the other groups
0d
1D
K, d
k∈ C; Wherein, i is an integer, is the group number of dividing into groups; L is an integer, and L+1 is the maximum number of FPDP in each group; K is an integer, the orthogonal code number that K+1 distributes for the group inner port.
{ d
0d
1D
KIn before
Individual orthogonal code belongs to { c
0c
1C
KAfter
Individual orthogonal code, { d
0d
1D
KIn after
Individual orthogonal code belongs to { c
0c
1C
KBefore
Individual orthogonal code; Wherein,
Expression rounds up.
First processing unit 72 further, the orthogonal code corresponding to the different port of all the other groups multiplies each other with the different phase factor
.
First processing unit 72 further; Each group in corresponding other groups; On the different resources position, with the different phase factor
all of the port in organizing is multiplied each other, wherein j representes j resource location.
When the data on each port in the group were carried out code division multiplexing on time orientation, first processing unit 72 on the different sub carrier of carrying data, was respectively organized and is used the orthogonal code of different phase factor pair group inner port to multiply each other further.
When the data on each port in the group were carried out code division multiplexing on frequency direction, first processing unit 72 was carrying on the different OFDM symbol/time slot of data further, and each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
When the data on each port in the group are carried out code division multiplexing on time, frequency two-dimensional directional; First processing unit 72 further; Piecemeal is carried out in time-frequency position to carrying data, and on adjacent piece, each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
Above-mentioned data are demodulated reference signal.
It will be appreciated by those skilled in the art that the present invention's data symbol orthogonal processing device shown in Figure 7 designs for realizing aforesaid data symbol orthogonal processing method, the realization function of above-mentioned each processing unit can be with reference to the associated description of preceding method and is understood.The function of each processing unit among the figure can realize through the program that runs on the processor, also can realize through concrete logical circuit.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (18)
1. a data symbol orthogonal processing method is characterized in that, the port of code division multiplexing data is divided into groups; Said method also comprises:
To one group of port assignment orthogonal code wherein,, all the other group ports distribute orthogonal code with one group of different mode of port of distributing orthogonal code for adopting; And the orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights;
With distributed orthogonal code the data on each port in each group are carried out orthogonal processing.
2. method according to claim 1 is characterized in that, to one group of port assignment orthogonal code wherein, with one group of mode that port is different of distributing orthogonal code, by all the other group port assignment with distributed orthogonal code to be specially:
Be one group of each port { p wherein
I, 0, p
I, 1..., p
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C;
From C, select orthogonal code { d with different orders for each port in all the other groups
0d
1D
K, d
k∈ C; Wherein, i is an integer, is the group number of dividing into groups; L is an integer, and L+1 is the maximum number of FPDP in each group; K is an integer, the orthogonal code number that K+1 distributes for the group inner port.
3. method according to claim 2 is characterized in that { d
0d
1D
KIn before
Individual orthogonal code belongs to { c
0c
1C
KAfter
Individual orthogonal code, { d
0d
1D
KIn after
Individual orthogonal code belongs to { c
0c
1C
KBefore
Individual orthogonal code; Wherein,
Expression rounds up.
4. method according to claim 1 is characterized in that, the orthogonal code of different port is multiplied each other with out of phase factor weights to be specially:
The orthogonal code corresponding to the different port of all the other groups multiplies each other with the different phase factor
.
5. method according to claim 4 is characterized in that, said method also comprises:
Each group in corresponding all the other groups; On the different resources position, with the different phase factor
all of the port in organizing is multiplied each other, wherein j representes j resource location.
6. method according to claim 4; It is characterized in that; When the data on each port in the group are carried out code division multiplexing on time orientation; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: on the different sub carrier of carrying data, each group uses orthogonal code of different phase factor pair group inner port to multiply each other.
7. method according to claim 4; It is characterized in that; When the data on each port in the group are carried out code division multiplexing on frequency direction; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: carrying on different OFDM (OFDM) symbol/time slot of data, each group multiplies each other with orthogonal code of different phase factor pair group inner port.
8. method according to claim 4; It is characterized in that; When the data on each port in the group are carried out code division multiplexing on time, frequency two-dimensional directional; The orthogonal code of the different port of all the other groups multiplied each other with out of phase factor weights be specially: piecemeal is carried out in the time-frequency position to carrying data, and on adjacent piece, each group multiplies each other with orthogonal code of different phase factor pair group inner port.
9. according to each described method of claim 1 to 8, it is characterized in that said data are demodulated reference signal.
10. a data symbol orthogonal processing device is characterized in that, said device comprises grouped element, allocation units, first processing unit and second processing unit; Wherein,
Grouped element is used for the port of code division multiplexing data is divided into groups;
Allocation units are used for one group of port assignment orthogonal code wherein, distribute orthogonal code for all the other group ports adopt with one group of different mode of port of distributing orthogonal code;
First processing unit is used for the orthogonal code of the different port of all the other groups is multiplied each other with out of phase factor weights;
Second processing unit is used for orthogonal code that said allocation units are distributed the data on each each port of group being carried out orthogonal processing.
11. device according to claim 9 is characterized in that, said allocation units further are one group of each port { p wherein
I, 0, p
I, 1..., p
I, LDistribution orthogonal code { c
0c
1C
K, this group orthogonal code note is made C;
From C, select orthogonal code { d with different orders for each port in all the other groups
0d
1D
K, d
k∈ C; Wherein, i is an integer, is the group number of dividing into groups; L is an integer, and L+1 is the maximum number of FPDP in each group; K is an integer, the orthogonal code number that K+1 distributes for the group inner port.
12. device according to claim 11 is characterized in that, { d
0d
1D
KIn before
Individual orthogonal code belongs to { c
0c
1C
KAfter
Individual orthogonal code, { d
0d
1D
KIn after
Individual orthogonal code belongs to { c
0c
1C
KBefore
Individual orthogonal code; Wherein,
Expression rounds up.
13. device according to claim 10; It is characterized in that; Said first processing unit further, the orthogonal code corresponding to the different port of all the other groups multiplies each other with the different phase factor
.
14. device according to claim 13; It is characterized in that; Said first processing unit further; Each group in corresponding other groups; On the different resources position, with the different phase factor
all of the port in organizing is multiplied each other, wherein j representes j resource location.
15. device according to claim 13; It is characterized in that; When the data on each port in the group are carried out code division multiplexing on time orientation; Said first processing unit on the different sub carrier of carrying data, is respectively organized and is used orthogonal code of different phase factor pair group inner port to multiply each other further.
16. device according to claim 13; It is characterized in that; When the data on each port in the group are carried out code division multiplexing on frequency direction; Said first processing unit is carrying on the different OFDM symbol/time slot of data further, and each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
17. device according to claim 13; It is characterized in that; When the data on each port in the group were carried out code division multiplexing on time, frequency two-dimensional directional, said first processing unit carried out piecemeal to the time-frequency position of carrying data further; On adjacent piece, each group multiplies each other with the orthogonal code of different phase factor pair group inner port.
18., it is characterized in that said data are demodulated reference signal according to each described device of claim 10 to 17.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017173851A1 (en) * | 2016-04-08 | 2017-10-12 | 中兴通讯股份有限公司 | Anti-interference method and system |
| US10560298B2 (en) | 2016-05-11 | 2020-02-11 | Huawei Technologies Co., Ltd. | Signal transmission method, transmit end, and receive end |
| WO2021046948A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Reference signal processing method, apparatus, and system |
| CN114173222A (en) * | 2022-02-11 | 2022-03-11 | 上海英哈科技有限公司 | Internet of things equipment, internet of things data server and corresponding operation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1942596A2 (en) * | 2007-01-05 | 2008-07-09 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving control information to randomize inter-cell interference in a mobile communication system |
| CN101682920A (en) * | 2007-03-20 | 2010-03-24 | 株式会社Ntt都科摩 | User device, base station device, and method |
| CN101771443A (en) * | 2009-01-05 | 2010-07-07 | 大唐移动通信设备有限公司 | Method for controlling overhead of reference marks in LTE-A system and base station thereof |
| CN102271109A (en) * | 2010-06-07 | 2011-12-07 | 中兴通讯股份有限公司 | Demodulation reference signal mapping method and system |
-
2010
- 2010-08-18 CN CN201010260809.XA patent/CN102377719B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1942596A2 (en) * | 2007-01-05 | 2008-07-09 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving control information to randomize inter-cell interference in a mobile communication system |
| CN101682920A (en) * | 2007-03-20 | 2010-03-24 | 株式会社Ntt都科摩 | User device, base station device, and method |
| CN101771443A (en) * | 2009-01-05 | 2010-07-07 | 大唐移动通信设备有限公司 | Method for controlling overhead of reference marks in LTE-A system and base station thereof |
| CN102271109A (en) * | 2010-06-07 | 2011-12-07 | 中兴通讯股份有限公司 | Demodulation reference signal mapping method and system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017173851A1 (en) * | 2016-04-08 | 2017-10-12 | 中兴通讯股份有限公司 | Anti-interference method and system |
| CN107302509A (en) * | 2016-04-08 | 2017-10-27 | 中兴通讯股份有限公司 | A kind of anti-disturbance method and system |
| US10944495B2 (en) | 2016-04-08 | 2021-03-09 | Zte Corporation | Anti-interference method and system |
| CN107302509B (en) * | 2016-04-08 | 2021-08-31 | 中兴通讯股份有限公司 | Anti-interference method and system |
| US10560298B2 (en) | 2016-05-11 | 2020-02-11 | Huawei Technologies Co., Ltd. | Signal transmission method, transmit end, and receive end |
| WO2021046948A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Reference signal processing method, apparatus, and system |
| WO2021046823A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Reference signal processing method, device and system |
| CN114287123A (en) * | 2019-09-12 | 2022-04-05 | 华为技术有限公司 | Reference signal processing method, device and system |
| CN114287123B (en) * | 2019-09-12 | 2023-12-15 | 华为技术有限公司 | Reference signal processing method, device and system |
| CN114173222A (en) * | 2022-02-11 | 2022-03-11 | 上海英哈科技有限公司 | Internet of things equipment, internet of things data server and corresponding operation method |
| CN114173222B (en) * | 2022-02-11 | 2022-04-15 | 上海英哈科技有限公司 | Internet of things equipment, internet of things data server and corresponding operation method |
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|---|---|
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