CN102377719B - data symbol orthogonal processing method and device - Google Patents
data symbol orthogonal processing method and device Download PDFInfo
- Publication number
- CN102377719B CN102377719B CN201010260809.XA CN201010260809A CN102377719B CN 102377719 B CN102377719 B CN 102377719B CN 201010260809 A CN201010260809 A CN 201010260809A CN 102377719 B CN102377719 B CN 102377719B
- Authority
- CN
- China
- Prior art keywords
- group
- port
- orthogonal code
- different
- orthogonal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
The invention discloses a kind of data symbol orthogonal processing method, the port of code multiplexed data is divided into groups; Comprise: to wherein one group of port assignment orthogonal code, for all the other group ports distribute orthogonal code in a different manner, the orthogonal code of the different port of all the other groups is multiplied with out of phase factor weights; Orthogonal processing is carried out to the data on each port in each group.The present invention discloses a kind of data symbol orthogonal processing device, comprising: grouped element, the port of code multiplexed data is divided into groups; Allocation units, to wherein one group of port assignment orthogonal code, for all the other group ports distribute orthogonal code in different ways; First processing unit, the orthogonal code for the different port organized all the other is multiplied with out of phase factor weights; Second processing unit, for described allocation units distribute orthogonal code to each group in data on each port carry out orthogonal processing.The present invention makes the data on the port between group completely orthogonal, avoids interference the impact on channel estimating.
Description
Technical field
The present invention relates to data symbol quadrature processing techniques, particularly relate to a kind of orthogonal processing method and device of demodulation pilot frequency symbol (DMRS, DemodulationReferenceSignal).
Background technology
High-order multi-antenna technology is one of key technology of senior Long Term Evolution (LTE-A or LTE-Advanced, LongTermEvolutionAdvanced) system, in order to improve system transfer rate.Measure and data demodulates to realize the channel status after introducing high-order multi-antenna technology, LTE-Advanced system respectively defines two class frequency pilot signs: data demodulates frequency pilot sign (DMRS, and channel status measurement pilot frequency symbol (CSI-RS DemodulationReferenceSignal), ChannelStateInformation-ReferenceSignal), wherein, demodulation pilot frequency symbol is the reference symbol for Physical Downlink Shared Channel (PDSCH, PhysicalDownlinkSharedChannel) demodulation.Measurement pilot frequency symbol is for (CSI, ChannelStateInformation) reference symbol measured, be mainly used in channel quality instruction (CQI, ChannelQualityIndicator), pre-coding matrix instruction (PMI, PrecodingMatrixIndicator), stratum indicates reporting of information such as (RI, RankIndicator).The structure of two class reference signals may be used for supporting as multipoint cooperative (CoMP, CoordinatedMulti-Point), the new technical feature of the LTE-A such as spatial reuse.
At Long Term Evolution (LTE, LongTermEvolution) in system, that adopt is public reference signal (CRS, CommonReferenceSignal) pilot measurement is carried out, namely all users use common pilot to carry out channel estimating, this public reference signal needs emitting side additional notifications receiving terminal to have employed which kind of pretreatment mode to the data of launching, and this will cause resource overhead larger; In addition, in multi-user's Multiinputoutput (MU-MIMO, Multi-userMultipleInputMultipleOutput) system, because multiple UE is using identical CRS, the orthogonal of pilot tone cannot be realized, be therefore unable to estimate interference.
In lte-a system, in order to reduce the expense of pilot tone, witness mark symbol (CSI-RS) and demodulation reference mark (DMRS) are separately designed, demodulated reference signal and the identical pretreatment mode of data acquisition, demodulation reference mark is according to available order (rank) the information MAP reference symbol of dispatched users respective channels simultaneously, therefore, and can adaptively according to order information adjustment expense, like this in the situation that order is lower, greatly expense can be reduced.
In current discussion, the detail of design of demodulation reference mark is determined, as shown in Figure 1, wherein when the rank number that downlink transfer uses is less than or equal to 2, only uses in Fig. 1
corresponding Resource Unit (RE, ResourceElement) for carrying DMRS and transmitting, and employing length is the orthogonal code (OCC of 2, OrthogonalCoverCode) two adjacent in time domain OFDM (OFDM, OrthogonalFrequencyDivisionMultiplexing) symbols carry out scrambling.When rank number is more than or equal to 3 and is less than or equal to 4, use two groups as in Fig. 1
with
corresponding Resource Unit carries DMRS.Wherein often organizing maximum on RE can the multiplexing DMRS number of layers of orthogonal CDM be 2, two OFDM symbol that often group is adjacent in time domain adopt length be 2 orthogonal code carry out orthogonal scrambling.And when rank number is greater than 4, use two groups as in Fig. 1
with
corresponding Resource Unit carries DMRS, two OFDM symbol that often group is adjacent in time domain adopt length be 4 OCC code carry out orthogonal scrambling, and often to organize maximum on RE can the multiplexing DMRS number of layers of orthogonal CDM be 4.
Fig. 2 is without carrier wave schematic diagram when frequency deviation and timing error, and Fig. 3 is carrier wave schematic diagram when there is frequency deviation or timing error, as shown in Figures 2 and 3, by comparison diagram 2 and Fig. 3, based on above-mentioned DMRS pattern, if there is Doppler frequency shift and timing error problem, inter-carrier interference can be produced.As shown in Figure 2, and if any process is not done to the orthogonal code in two groups, such as corresponding port adopts identical OCC code, when carrying out despreading, due to the existence of inter-carrier interference, interference between the port of corresponding identical OCC code will be larger, thus affect the precision of demodulation reference mark channel estimating.
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, and the data on the port of the DMRS of the different code division multiplexing of employing can be made completely orthogonal, the interference on the port greatly reducing different DMRS between data.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of data symbol orthogonal processing method, divides into groups to code multiplexed data port; Described method also comprises:
To wherein one group of port assignment orthogonal code, for all the other group ports adopt the mode different from the one group of port distributing orthogonal code to distribute orthogonal code; And the orthogonal code of the different port of all the other groups is multiplied with out of phase factor weights;
With distribution orthogonal code orthogonal processing is carried out to the data on each port in each group.
Preferably, to wherein one group of port assignment orthogonal code, in the mode different from the one group of port distributing orthogonal code, by all the other group port assignment with distributed orthogonal code and be specially:
For wherein one group of each port { p
i, 0, p
i, 1..., p
i, Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C;
With each port selection orthogonal code { d that different orders is in all the other groups from C
0d
1d
k, d
k∈ C; Wherein, i is integer, is the group number of grouping; L is integer, and L+1 is the maximum number of FPDP in each group; K is integer, the orthogonal code number that K+1 distributes for 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 be multiplied with out of phase factor weights be specially:
The orthogonal code different phase factor corresponding to the different port of all the other groups
be multiplied.
Preferably, described method also comprises:
Each group in all the other groups corresponding, with different phase factors on different resource locations
be multiplied to all of the port in group, wherein j represents a jth resource location.
Preferably, during the choosing of weight, the respective vector that to weights corresponding RE on form of different each port of group in same OFDM symbol is different.
Further alternative, when data on each port in group carry out code division multiplexing on time orientation, the orthogonal code of different port of all the other groups is multiplied with out of phase factor weights and is specially: in the different sub carrier of carrying data, each group uses different phase factors
the orthogonal code of ports all in group is multiplied.
Further alternative, when data on each port in group carry out code division multiplexing in a frequency direction, to be multiplied with out of phase factor weights to the orthogonal code of different port of all the other groups and to be specially: on OFDM (OFDM) symbol/time slot that carrying data are different, each group with different phase factors
the orthogonal code of all of the port in group is multiplied.
Further alternative, when data on each port in group carry out code division multiplexing on time, frequency two-dimensional directional, the orthogonal code of different port of all the other groups is multiplied with out of phase factor weights and is specially: piecemeal is carried out to the time-frequency location of carrying data, on adjacent block, each group with different phase factors
the orthogonal code of all of the port in group is multiplied.
Preferably, described data are demodulated reference signal or channel measurement reference symbol.
A kind of data symbol orthogonal processing device, comprises grouped element, allocation units, the first processing unit and the second processing unit; Wherein,
Grouped element, for dividing into groups to the port of code multiplexed data;
Allocation units, for wherein one group of port assignment orthogonal code, for all the other group ports distribute orthogonal code in the mode different from the one group of port distributing orthogonal code;
First processing unit, the orthogonal code for the different port organized all the other is multiplied with out of phase factor weights;
Second processing unit, for described allocation units distribute orthogonal code to each group in data on each port carry out orthogonal processing.
Preferably, described allocation units are wherein one group of each port { p further
i, 0, p
i, 1..., p
i, Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C;
With each port selection orthogonal code { d that different orders is in all the other groups from C
0d
1d
k, d
k∈ C; Wherein, i is integer, is the group number of grouping; L is integer, and L+1 is the maximum number of FPDP in each group; K is integer, the orthogonal code number that K+1 distributes for 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, described first processing unit further, to the different phase factor of orthogonal code corresponding to different ports of all the other groups
be multiplied.
Preferably, further, each group in other groups corresponding, with different phase factors on different resource locations for described first processing unit
be multiplied to all of the port in group, wherein j represents a jth resource location.
Preferably, when the data on each port in group carry out code division multiplexing on time orientation, further, in the different sub carrier of carrying data, each group uses the orthogonal code of different phase factors to group inner port to be multiplied to described first processing unit.
Preferably, when data on each port in group carry out code division multiplexing in a frequency direction, further, on OFDM symbol/time slot that carrying data are different, each group is multiplied by the orthogonal code of different phase factors to group inner port described first processing unit.
Preferably, when data on each port in group carry out code division multiplexing on time, frequency two-dimensional directional, described first processing unit further, piecemeal is carried out to the time-frequency location of carrying data, on adjacent block, each group is multiplied by the orthogonal code of different phase factors to group inner port.
Preferably, described data are demodulated reference signal.
In the present invention, by dividing into groups to the FPDP of code division multiplexing, and distribute orthogonal code sets to each FPDP wherein in a group; And the orthogonal code sets different from the group of distributing orthogonal code is joined to all the other components, the data strict orthogonal on each port can be ensured; When the present invention's FPDP that can realize in different groups carries out despreading on two or more orthogonal systems, the data on the port between group are completely orthogonal, thus avoid inter-carrier interference or intersymbol interference on the impact of channel estimating.Meanwhile, when subscriber equipment (UE, UserEquipment) adopts one dimension despreading to carry out channel estimating, also can obtain the effect of the inter-carrier interference compression of part, thus more can be applicable to various different channel estimation methods.Be multiplied with different weights owing to contemplated by the invention in addition, when orthogonal code can be made to map, the orthogonal code of different group is different to the stacked system of pre-code data in specifically respective resource unit group, thus reduces the different impact on Designing power amplifier of distinct symbols power.
Accompanying drawing explanation
Fig. 1 is the carrying schematic diagram of demodulation reference mark in subframe;
Fig. 2 is without carrier wave schematic diagram when frequency deviation and timing error;
Fig. 3 is carrier wave schematic diagram when there is frequency deviation or timing error;
Fig. 4 is for the present invention is based on the orthogonal mapping schematic diagram of two-phase PSK (BPSK, BinaryPhaseShiftKeying) modulation system;
When Fig. 5 is based on mapping mode in Fig. 4, the orthogonal code that two groups of each leisures of port are often organized on corresponding adjacent DMRS carrier wave uses schematic diagram;
Orthogonal code when Fig. 6 is the alphabet that the present invention is based on high order modulation maps schematic diagram;
Fig. 7 is the composition structural representation of data symbol orthogonal processing device of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.
Basic thought of the present invention is, makes inter-carrier interference reduce or eliminate completely.When the present invention adopts different channel estimating modes, there is different inter-carrier interference compression effectiveness, and under specific channel estimating mode, the impact of inter-carrier interference on the channel estimating of the port between different groups can be eliminated completely.Data symbol orthogonal method of the present invention, specifically comprises the following steps:
Step 1: transmit leg produces demodulation reference mark sequence to the different port of difference group respectively, here mainly each carries out the port set of code division multiplexing to difference group, such as, during code division multiplexing mode, carry out code division multiplexing port and be divided into one group respectively, carry out the group that the port of time-division or frequency division multiplexing is corresponding different.Technical scheme of the present invention mainly for be the different grouping data of code division multiplexing.In the present invention, adopt identical base scrambler sequence between the port (port in the group of same code point mode) carrying out code division multiplexing, and carry out scrambling based on the different orthogonal code (OCC) of this basic sequence.
In above-mentioned steps 1, concrete, first the demodulation reference mark port of code division multiplexing is divided into groups, be denoted as G
i, i>=0, often organizes G
ithe port of code division multiplexing be denoted as { p
i, 0p
i, 1p
i, L; Frequency division and/or time division multiplexing mode is adopted between the demodulation reference mark port of different group.
For wherein a component joins orthogonal code, other groups distribute orthogonal code according to the mode different from the group of distributing orthogonal code, and are multiplied to the orthogonal code out of phase factor weights of different port in other groups.Be specially:
First-selection is each port { p in a group
i, 0p
i, 1p
i, Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C.
Be that each DMRS port in other groups selects orthogonal code from C according to the order that the orthogonal code from above-mentioned group is different, wherein, between wantonly two groups, the orthogonal code selecting sequence { d different from first group of second group
0d
1d
k, d
k∈ C.Certainly, best mode is, the orthogonal code used between any a group is all not identical.That is, for each group DMRS port, select the order different from aforementioned groupings orthogonal code as the orthogonal code of this group DMRS port.
The orthogonal code corresponding to the part or all of port of other groups, adopts phase factor to be multiplied with orthogonal code and refers to, use weights
be multiplied with orthogonal code, represent i-th carrier wave or symbol or the different phase factor θ of time-frequency block
i, kprocess, the θ that the different different port organized is corresponding
i, kcan be identical, also can be different.Here orthogonal code is the vector of 1 × K or K × 1, K be greater than 1 positive integer, θ
i, kit is the vector of 1 × 1.Here phase factor in group can be denoted as.
The phase factor of other groups and distribute the group of orthogonal code phase factor between, can be multiplied by+1 or-1 relation.
Alternatively, further, to all of the port of difference group, use the orthogonal code of different cycle phase factor pair all of the ports to process, phase factor is denoted as phase factor between group here, is specially:
When each port in group carries out code division multiplexing on time orientation, carry out process to the cycle phase factor of difference group different orthogonal code and refer to: on different demodulation reference mark carrier waves, the different phase factor of each group processes.Such as demodulation reference mark carrier wave i, i+1 ..., i+N, uses phase place e to the 1st group
j (i2 π)process, uses e for the 2nd group
j (i π), use e for n-th group
j (i π/n).
When each port in group carries out code division multiplexing in a frequency direction, carry out process to different groups by the different cycle phase factors and refer to: on different carrying demodulation reference mark OFDM symbol/time slots, process with different phase factors in each group.
When each port in group carries out code division multiplexing on time/frequency two-dimensional directional, carry out process to different groups by the different cycle phase factors to refer to: carry out piecemeal to the time-frequency location of carrying demodulation reference mark, on adjacent block, the different phase factor of each group processes.
Wherein, when only having two to organize, the principle chosen of first group and second group of phase factor for under type any one or multiple:
When first group adopts e
j (i θ)when processing, second group adopts (-1)
ie
j (i θ).
When first group adopts e
j (i θ)when processing, second group of employing
When first group adopts e
j (i θ)when processing, second group of employing
the value of n be more than or equal to 4 positive integer.
When there being multiple groups, such as organizing number is m, produces m and ties up discrete Fourier transform (DFT) (DFT, DiscreteFourierTransform) matrix, for different component joins different rows or the different lines of DFT matrix.
Step 2: the demodulation reference mark sequence produced in abovementioned steps 1 is mapped on corresponding Resource Unit according to predetermined pilot tone pattern, wherein, the resource location that the demodulation reference mark of carrying out port (port in the same group) correspondence of code division multiplexing maps is identical, and the demodulation reference mark of each port is mapped on the layer corresponding to port respectively.The demodulation reference mark that port in different group is corresponding is mapped on different Resource Units.
Step 3: with PDSCH data acquisition identical precoding weights, precoding processing is carried out to the demodulation reference mark after mapping, and produces the data on different antennae port, different antenna ports is launched.
In above-mentioned, phase place weight refers to have e
j θthe factor of form, wherein, θ represents phase value.Orthogonal code in above-mentioned can be orthogonal mask (OrthogonalCoverCode).
By the following examples, the essence of technical solution of the present invention is illustrated further.
Embodiment one
In this embodiment, the orthogonal mapping method based on BPSK modulomenter (namely+1 and-1) is illustrated.Fig. 4 is for the present invention is based on two-phase PSK (BPSK, BinaryPhaseShiftKeying) the orthogonal mapping schematic diagram of modulation system, as shown in Figure 4, with two code division multiplexing groups in figure, maximum 4 ports of each code division multiplexing group are that example is described.Orthogonal in order to what can realize based on each Physical Resource Block (PRB, PhysicalResourceBlock) time-frequency bidimensional, at the port set G of each code division multiplexing
ii ∈ { port { the p in 0,1}
i, 0p
i, 1p
i, L, L is 3 to the maximum, respectively by employing orthogonal code a, b, c, d process.Wherein a, b, c, d represent walsh matrix respectively
different lines.In practical application, also can be other different orthogonal matrixes, such as, based on the matrix etc. of DFT.
In order to realize the orthogonal of each port on the time-frequency two-dimensional direction based on each PRB, first in first group, when being different port { p
0,0p
0,1p
0,3orthogonal code is distributed in the time domain direction of 2i DMRS subcarrier be respectively { a; B; C; D}; The time domain direction of 2i+1 DMRS subcarrier is corresponding port assignment { a;-b;-c; D}, wherein, i is natural number; Port data is as in figure
shown Resource Unit distribution.Under this processing mode, the two-dimensional quadrature in time domain and frequency domain direction between each port in each code division multiplexing group can be realized.It should be noted that, in the description of specification part, describe orthogonal code based on port to distribute, illustrate based on each RE in the drawings, each RE is characterized by each port vector that the corresponding factor is formed on this RE, its corresponding relation is: when the orthogonal code vector of each port corresponds respectively to the row of orthogonal matrix, then row correspond to the orthogonal code vector that each RE is formed.
Further, in order to based in each code division multiplexing group between each port time-frequency two-dimensional orthogonal while, can when there is inter-carrier interference, further reduction or the interference eliminated between different groups, can consider to adopt different orthogonal code distribution principles to difference group, such as, when group 1 adopts the above-mentioned orthogonal code method of salary distribution, on the time domain direction of 2i DMRS subcarrier of second group correspondence, be demodulation reference mark port { p
1,0p
1,1p
1,3distribute orthogonal code { d; C; B; A}, and on second group of corresponding 2i+1 DMRS subcarrier, adopt { d;-c;-b; A}.
The present invention can make the further randomization carrying out peak power between two group, makes can make to eliminate interference completely in two groups simultaneously.The present invention, can also by the different phase factor process of OCC code to the different port in second group, such as, the orthogonal code corresponding to the 2nd group of each port corresponding carries out being multiplied with phase factor, after the process that is multiplied, the port { p of second group of corresponding 2i DMRS subcarrier
1,0p
1,1p
1,3distribute orthogonal code become { d;-c;-b; A}, and the orthogonal code on 2i+1 DMRS subcarrier becomes {-d;-c;-b;-a}, respectively as shown in Figure 5, the orthogonal code that the port now between two groups is corresponding is completely orthogonal, therefore can eliminate interference completely for the orthogonal code that now each port is corresponding on 8 RE.
It should be noted that, simply show a kind of signal in above-mentioned figure, the present invention is not limited to this, provides more general mode below, for first group, as port { p
0,0p
0,1p
0,3orthogonal code is distributed in the time domain direction of 2i DMRS subcarrier of its correspondence be respectively { c
0; c
1; c
2; c
3time, c
ifor row vector; Matrix [c
0; c
1; c
2; c
3] be from left to right respectively a by row, b, c, d, the time domain direction of 2i+1 DMRS subcarrier of correspondence is corresponding port assignment orthogonal code can be [± c, ± d, ± a, ± b] or [± d, ± c, ± b, ± a] each successively row of any one matrix in 32 square formations forming, be expressed as { z
0; z
1; z
2; z
3.Simultaneously for second group, on the time domain direction of 2i DMRS subcarrier of its correspondence, be demodulation reference mark port { p
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 there is any one of characteristic below:
Suppose that the OCC code that each port of second group configures on 2i DMRS subcarrier of this group correspondence is { s
0; s
1; s
2; s
3, then { s
0; s
1; s
2; s
3there is following characteristic: if matrix [s
0; s
1; s
2; s
3] the 1st row be respectively to last row: [x, y, z, t], then demand fulfillment x, y ∈ { ± c
2, ± c
3, z, t ∈ { ± c
0, ± c
1.
Orthogonal code on second group of corresponding 2i+1 DMRS subcarrier is designated as { q
0; q
1; q
2; q
3.{ q
0; q
1; q
2; q
3meet following restriction relation:
Constraint 1: matrix [q
0; q
1; q
2; q
3] front two row e, f ∈ { ± a, ± b}, rear two 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, give based on the orthogonal code mapping mode under high-order modulating, under the mode provided in this embodiment, on the basis that group inner code word maps, by the effect of different OCC Mapping implementation inter-carrier interference compression between group, do not change the effect designing in group and bring simultaneously.In this embodiment, the demodulation reference mark port of same code division multiplexing selects identical OCC code on its different DMRS subcarriers to correspondence, but orthogonal in order to what realize on time-frequency two-dimensional direction, on frequency domain direction, respectively different phase place weights is multiplied by the different port of same group.Orthogonal code when Fig. 6 is the alphabet that the present invention is based on high order modulation maps schematic diagram, as shown in Figure 6, under the mapping mode being assigned with OCC code, on different carrier positions, to port p
0,0and p
1,0be multiplied by phase factor e
j (2 π i), to port p
0,1and p
1,1be multiplied by phase factor e
j (π i), to port p
0,2and p
1,2be multiplied by phase factor e
j (2 π i/3), to port p
0,3and p
1,3be multiplied by phase factor e
j (π i/3).After above-mentioned process, each port often in group is 3 carrier waves on frequency domain, and the orthogonal code of the equivalence in time domain adjacent OFDM symbol is respectively [111111], [1-11-11-1], [1 ω
2ω
-21 ω
2ω
-2], [1 ω ω
2-1-ω-ω
2], mutually orthogonal between 4 ports now in a group.But adopt in a like fashion between each port due to difference group, therefore for the compression effectiveness without any carrier-in-interference between two groups.
In this example, in order to eliminate the interference between different groups, on above-mentioned basis, different OCC allocation criteria is adopted to different groups, simultaneously to second group in the different phase factor process of different port.Such as shown in Fig. 6: the OCC code that in first group, each port distributes on each carrier wave of its correspondence is respectively { a; B; C; D}, then the different port in second group can distribute { d; C; B; A}, simultaneously on 2i carrier wave, the OCC code of each port assignment is { d;-c;-b; During a}, then on 2i+1 carrier wave, the OCC code of each port assignment is {-d; C; B;-a}.By this process, not only when bidimensional is estimated, inter-carrier interference can be eliminated completely, simultaneously one-dimensional square upwards despreading time (frequency domain or time domain), also partly can eliminate interference.In addition due to the difference of the mapping mode between two groups, the randomized effect of power between group therefore can also be played.
It should be noted that, simply show a kind of signal in figure equally, in actual applications, for first group, as port { p
0,0p
0,1p
0,3orthogonal code is distributed in the time domain direction of each DMRS subcarrier of its correspondence be respectively { a; B; C; During d}, for second group, on the time domain direction of each DMRS subcarrier of its correspondence, be demodulation reference mark port { p
1,0p
1,1p
1,3to distribute orthogonal code can be ± { any one in d ,-c ,-b, 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 the second processing unit 73; Wherein,
Grouped element 70, for dividing into groups to the port of code multiplexed data;
Allocation units 71, for wherein one group of port assignment orthogonal code, for all the other group ports distribute orthogonal code in the mode different from the one group of port distributing orthogonal code;
First processing unit 72, the orthogonal code for the different port organized all the other is multiplied with out of phase factor weights;
Second processing unit 73, for described allocation units distribute orthogonal code to each group in data on each port carry out orthogonal processing.
Allocation units 71 are wherein one group of each port { p further
i, 0, p
i, 1..., p
i, Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C;
With each port selection orthogonal code { d that different orders is in all the other groups from C
0d
1d
k, d
k∈ C; Wherein, i is integer, is the group number of grouping; L is integer, and L+1 is the maximum number of FPDP in each group; K is integer, the orthogonal code number that K+1 distributes for 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, to the different phase factor of orthogonal code corresponding to different ports of all the other groups
be multiplied.
Further, each group in other groups corresponding, with different phase factors on different resource locations for first processing unit 72
be multiplied to all of the port in group, wherein j represents a jth resource location.
When data on each port in group carry out code division multiplexing on time orientation, further, in the different sub carrier of carrying data, each group uses the orthogonal code of different phase factors to group inner port to be multiplied to the first processing unit 72.
When data on each port in group carry out code division multiplexing in a frequency direction, further, on OFDM symbol/time slot that carrying data are different, each group is multiplied by the orthogonal code of different phase factors to group inner port the first processing unit 72.
When data on each port in group carry out code division multiplexing on time, frequency two-dimensional directional, first processing unit 72 further, carry out piecemeal to the time-frequency location of carrying data, on adjacent block, each group is multiplied by the orthogonal code of different phase factors to group inner port.
Above-mentioned data are demodulated reference signal.
It will be appreciated by those skilled in the art that the data symbol orthogonal processing device shown in Fig. 7 of the present invention designs for realizing aforesaid data symbol orthogonal processing method, the practical function of above-mentioned each processing unit can refer to the associated description of preceding method and understands.The function of each processing unit in figure realizes by the program run on processor, also realizes by concrete logical circuit.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (18)
1. a data symbol orthogonal processing method, is characterized in that, divides into groups to the port of code multiplexed data; Described method also comprises:
To wherein one group of port assignment orthogonal code, for all the other group ports adopt the mode different from the one group of port distributing orthogonal code to distribute orthogonal code; And the orthogonal code of the different port of all the other groups is multiplied with out of phase factor weights;
With distribution orthogonal code orthogonal processing is carried out to the data on each port in each group.
2. method according to claim 1, is characterized in that, to wherein one group of port assignment orthogonal code, in the mode different from the one group of port distributing orthogonal code, by all the other group port assignment with distributed orthogonal code and be specially:
For wherein one group of each port { p
i, 0, p
i, 1..., p
i,Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C;
With each port selection orthogonal code { d that different orders is in all the other groups from C
0d
1d
k, d
k∈ C; Wherein, i is integer, is the group number of grouping; L is integer, and L+1 is the maximum number of FPDP in each group; K is integer, the orthogonal code number that K+1 distributes for 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, being multiplied with out of phase factor weights to the orthogonal code of different port is specially:
The orthogonal code different phase factor corresponding to the different port of all the other groups
be multiplied;
Wherein, i represents group number, and k represents the port numbers in i-th group.
5. method according to claim 4, is characterized in that, described method also comprises:
Each group in all the other groups corresponding, with different phase factors on different resource locations
all of the port in group is multiplied; Wherein j represents a jth resource location, and i represents group number, and k represents the port numbers in i-th group.
6. method according to claim 4, it is characterized in that, when data on each port in group carry out code division multiplexing on time orientation, the orthogonal code of different port of all the other groups is multiplied with out of phase factor weights and is specially: in the different sub carrier of carrying data, each group uses the orthogonal code of different phase factors to group inner port to be multiplied.
7. method according to claim 4, it is characterized in that, when data on each port in group carry out code division multiplexing in a frequency direction, the orthogonal code of different port of all the other groups is multiplied with out of phase factor weights and is specially: on OFDM (OFDM) symbol/time slot that carrying data are different, each group is multiplied by the orthogonal code of different phase factors to group inner port.
8. method according to claim 4, it is characterized in that, when data on each port in group carry out code division multiplexing on time, frequency two-dimensional directional, the orthogonal code of different port of all the other groups is multiplied with out of phase factor weights and is specially: piecemeal is carried out to the time-frequency location of carrying data, on adjacent block, each group is multiplied by the orthogonal code of different phase factors to group inner port.
9. the method according to any one of claim 1 to 8, is characterized in that, described data are demodulated reference signal.
10. a data symbol orthogonal processing device, is characterized in that, described device comprises grouped element, allocation units, the first processing unit and the second processing unit; Wherein,
Grouped element, for dividing into groups to the port of code multiplexed data;
Allocation units, for wherein one group of port assignment orthogonal code, for all the other group ports adopt the mode different from the one group of port distributing orthogonal code to distribute orthogonal code;
First processing unit, the orthogonal code for the different port organized all the other is multiplied with out of phase factor weights;
Second processing unit, for described allocation units distribute orthogonal code to each group in data on each port carry out orthogonal processing.
11. devices according to claim 10, is characterized in that, described allocation units, are wherein one group of each port { p further
i, 0, p
i, 1..., p
i,Ldistribute orthogonal code { c
0c
1c
k, this group orthogonal code is denoted as C;
With each port selection orthogonal code { d that different orders is in all the other groups from C
0d
1d
k, d
k∈ C; Wherein, i is integer, is the group number of grouping; L is integer, and L+1 is the maximum number of FPDP in each group; K is integer, the orthogonal code number that K+1 distributes for group inner port.
12. devices 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. devices according to claim 10, is characterized in that, described first processing unit further, to the different phase factor of orthogonal code corresponding to different ports of all the other groups
be multiplied;
Wherein, i represents group number, and k represents the port numbers in i-th group.
14. devices according to claim 13, is characterized in that, further, each group in other groups corresponding, with different phase factors on different resource locations for described first processing unit
all of the port in group is multiplied;
Wherein j represents a jth resource location, and i represents group number, and k represents the port numbers in i-th group.
15. devices according to claim 13, it is characterized in that, when data on each port in group carry out code division multiplexing on time orientation, described first processing unit further, in the different sub carrier of carrying data, each group uses the orthogonal code of different phase factors to group inner port to be multiplied.
16. devices according to claim 13, it is characterized in that, when data on each port in group carry out code division multiplexing in a frequency direction, described first processing unit further, on OFDM symbol/time slot that carrying data are different, each group is multiplied by the orthogonal code of different phase factors to group inner port.
17. devices according to claim 13, it is characterized in that, when data on each port in group carry out code division multiplexing on time, frequency two-dimensional directional, described first processing unit further, piecemeal is carried out to the time-frequency location of carrying data, on adjacent block, each group is multiplied by the orthogonal code of different phase factors to group inner port.
18., according to claim 10 to the device described in 17 any one, is characterized in that, described data are demodulated reference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260809.XA CN102377719B (en) | 2010-08-18 | 2010-08-18 | data symbol orthogonal processing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260809.XA CN102377719B (en) | 2010-08-18 | 2010-08-18 | data symbol orthogonal processing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102377719A CN102377719A (en) | 2012-03-14 |
| CN102377719B true CN102377719B (en) | 2016-03-30 |
Family
ID=45795703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010260809.XA Expired - Fee Related CN102377719B (en) | 2010-08-18 | 2010-08-18 | data symbol orthogonal processing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102377719B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302509B (en) * | 2016-04-08 | 2021-08-31 | 中兴通讯股份有限公司 | Anti-interference method and system |
| CN109076048B (en) | 2016-05-11 | 2020-05-08 | 华为技术有限公司 | Signal transmission method, sending end and receiving end |
| WO2021046823A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Reference signal processing method, device and system |
| 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 |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102377719A (en) | 2012-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102271109B (en) | A kind of mapping method of demodulation reference mark and system | |
| CN102158319B (en) | A kind of method for precoding based on hybrid multiplex demodulation reference mark and device | |
| CN102202027B (en) | A kind of production method of pilot frequency sequence and device | |
| CN102598530B (en) | Method and apparatus for transmitting a reference signal in a multi-antenna system | |
| CN102396165B (en) | Method and apparatus for transmitting reference signal | |
| US8953430B2 (en) | Insertion of downlink demodulation reference signals into OFDM frames | |
| CN102461034B (en) | Method and apparatus for transmitting reference signal in multi-antenna system | |
| CN102437986B (en) | Reference signal mapping method and device | |
| US8804647B2 (en) | Method and apparatus for generating an uplink reference signal sequence in a wireless communication system | |
| CN102577296B (en) | Method and apparatus for transmitting a reference signal in a multi-antenna system | |
| CN101919187B (en) | Method and apparatus for transmission within multi-carrier communication system | |
| CN102696209B (en) | Orthogonal cover code generating apparatus, demodulation reference signal generating apparatus, and methods thereof | |
| CN102742176A (en) | Antenna port mapping method and device for demodulation reference signals | |
| CN102123013B (en) | Method and device for mapping demodulation reference signals (DMRS) | |
| CN107005320A (en) | For channel information acquisition, signal detection and the method for transmission in multi-user wireless communication system | |
| CN102195923A (en) | Method and base station for transmitting reference signals, and method and user equipment for receiving reference signals | |
| CN102948186A (en) | Method for reference signal transmission, method for channel quality estimation, mobile station, base station, and wireless communication system | |
| CN102916783A (en) | Method for transmitting, receiving and processing information, base station and user equipment | |
| CN102123022B (en) | Method and device for mapping demodulation reference signals (DMRS) | |
| CN102377719B (en) | data symbol orthogonal processing method and device | |
| CN101964706B (en) | Pilot frequency multiplexing determination method and device based on hybrid multiplexing | |
| CN102761355A (en) | Method and device for communication of control channel | |
| CN104079306A (en) | Operation method of receiver and signal receiving equipment | |
| WO2020083326A1 (en) | Parameter configuration and parameter receiving methods and apparatus, and storage medium | |
| CN106656443A (en) | Method and device for increasing paired users |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20170818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |