CN109842460A - Data transmission method, device, storage medium and processor - Google Patents
Data transmission method, device, storage medium and processor Download PDFInfo
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Abstract
The present invention provides a kind of data transmission method, device, storage medium and processors, wherein this method comprises: carrying out precoding to data to be transmitted, obtains the first data；First data are interleaved, the second data are obtained；Second data are modulated, third data are obtained；Overlapping multiplexing coding, Space Time Coding are carried out to third data, obtain the first data flow；The first data flow is sent to receiving end.By adopting the above technical scheme, it solves the problems, such as that the transmission reliability of overlapping multiplexing system in the related technology is poor, transmission rate is lesser, improves the transmission reliability and transmission rate of overlapping multiplexing system.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of data transmission method, device, storage medium and processing
Device.
Background technique
The coding for carrying out data by the way of overlapping multiplexing coding in a communications system, can increase substantially system
Transmit spectrum efficiency, but overlapping multiplexing coding coding mode it is lower to the error correcting capability of information flow, the reliability of transmission also compared with
Difference；And (X represents any domain to current overlapping multiplexing system OvXDM, comprising: time-domain T, spatial domain S, frequency domain F, code divide domain C
Or hybrid domain H etc.) it is mainly used in a single aerial system, spatial information is not utilized, when transmission data are more, compared to more days
Line overlap system, transmission rate are smaller.
For overlapping multiplexing system in the related technology transmission reliability is poor, the lesser problem of transmission rate, at present also
Do not efficiently solve scheme.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method, device, storage medium and processors, at least to solve phase
The transmission reliability of overlapping multiplexing system is poor in the technology of pass, the lesser problem of transmission rate.
According to one embodiment of present invention, a kind of data transmission method is provided, comprising: carry out to data to be transmitted pre-
Coding, obtains the first data；First data are interleaved, the second data are obtained；Second data are modulated,
Obtain third data；Overlapping multiplexing coding, Space Time Coding are carried out to the third data, obtain the first data flow；To receiving end
Send first data flow.
Optionally, the precoding includes TPC code coding.
Optionally, described to interweave including random interleaving.
Optionally, the modulation includes that BPSK is modulated.
Optionally, the overlapping multiplexing coding includes that overlapped time division multiplexing encodes；The Space Time Coding includes empty layered
Coding.
Optionally, it includes: that first data flow is pre- by first that the receiving end Xiang Suoshu, which sends first data flow,
If the transmission antenna of quantity is sent to the receiving end, wherein the transmission antenna of first preset quantity and described the
One data flow corresponds.
According to another embodiment of the invention, a kind of data transmission method is provided, comprising: the second data flow is received,
Wherein, second data flow is data flow of first data flow after transmission sent by transmitting terminal, described first
Data flow is to carry out precoding to data to be transmitted by the transmitting terminal, obtains the first data, and carry out to first data
Interweave, obtains the second data, then second data are modulated, obtain third data；Again to the third data into
Row overlapping multiplexing coding, Space Time Coding, obtained data flow；Second data flow is detected, detection data is obtained；It is right
The detection data is demodulated, and solution adjusting data is obtained；The solution adjusting data is deinterleaved, deinterleaved data is obtained；It is right
Deinterleaved data is decoded, and decoding data is obtained；The decoding data is made decisions, judgement output data is obtained.
Optionally, second data flow is detected, obtains the detection data and comprises determining that second data
Stream is worth with the distance between each data in preset data set, wherein includes described in process in the preset data set
The data being all likely to be obtained after transmitting terminal modulation；Data in the smallest preset data set of the distance value are determined
For the detection data.
Optionally, second data flow includes the data flow of the second preset quantity, wherein determines second data flow
The distance between each data in preset data set value comprise determining that each column data in third matrix with it is described pre-
If the distance between each data in data acquisition system are worth, wherein the data flow pair of third matrix and second preset quantity
It answers, and every data line of the third matrix corresponds to a data flow in the data flow of second preset quantity.
According to another embodiment of the invention, a kind of data transmission device is provided, comprising: precoding module is used for
Precoding is carried out to data to be transmitted, obtains the first data；Interleaving block is obtained for being interleaved to first data
Second data；Modulation module obtains third data for being modulated to second data；Coding module, for described
Third data carry out overlapping multiplexing coding, Space Time Coding, obtain the first data flow；Sending module, for sending institute to receiving end
State the first data flow.
Optionally, the precoding includes TPC code coding.
Optionally, described to interweave including irregular intertexture.
Optionally, the modulation is modulated comprising BPSK.
Optionally, the overlapping multiplexing coding includes that overlapped time division multiplexing encodes；The Space Time Coding includes empty layered
Coding.
Optionally, the sending module includes: transmission unit, for first data flow to be passed through the first preset quantity
Transmission antenna sent to the receiving end, wherein the transmission antenna of first preset quantity and first data
Stream corresponds.
According to another embodiment of the invention, a kind of data transmission device is provided, comprising: receiving module, for connecing
Receive the second data flow, wherein second data flow is the number by the first data flow of transmitting terminal transmission after transmission
According to stream, first data flow is to carry out precoding to data to be transmitted by the transmitting terminal, obtains the first data, and to described
First data are interleaved, and obtain the second data, are then modulated to second data, obtain third data, then to institute
It states third data and carries out overlapping multiplexing coding, Space Time Coding, obtained data flow；Detection module, for second data
Stream is detected, and detection data is obtained；Demodulation module obtains solution adjusting data for demodulating to the detection data；Solution is handed over
Module is knitted, for being deinterleaved to solution adjusting data, obtains deinterleaved data；Decoding module, for the deinterleaved data
It is decoded, obtains decoding data；Judging module obtains judgement output data for making decisions to the decoding data.
Optionally, the detection module includes: the first determination unit, for determining second data flow and preset data
The distance between each data in set value, wherein include after transmitting terminal modulation in the preset data set
The data being all likely to be obtained；Second determination unit, for by the number in the smallest preset data set of the distance value
According to being determined as the detection data.
Optionally, second data flow includes the data flow of the second preset quantity, wherein first determination unit is used
In: determine the distance between each column data in third matrix and each data in preset data set value, wherein
Third matrix is corresponding with the data flow of second preset quantity, and every data line of the third matrix corresponds to described
A data flow in the data flow of two preset quantities.
According to still another embodiment of the invention, a kind of storage medium is additionally provided, the storage medium includes storage
Program, wherein described program executes method described in any of the above embodiments when running.
According to still another embodiment of the invention, a kind of processor is additionally provided, the processor is used to run program,
In, described program executes method described in any of the above embodiments when running.
Through the invention, precoding is carried out to data to be transmitted, obtains the first data；First data are interleaved, are obtained
To the second data；Second data are modulated, third data are obtained；It is compiled when carrying out overlapping multiplexing coding, sky to third data
Code, obtains the first data flow；To receiving end send the first data flow, it can be seen that, using the above scheme to data to be transmitted into
The processing of row precoding and intertexture is modulated processing to the second data obtained after intertexture, then to the third obtained after modulation
Data carry out overlapping multiplexing coding, Space Time Coding obtains the first data flow, and the first data flow is sent to receiving end, overlapping multiplexing
After using precoding in coded system, the equivalent encoding constraint length of overlapping multiplexing coding can be increased, considerable volume is provided
Code gain, improves the error correcting capability of information flow, and improve the transmission reliability of overlapping multiplexing system；It is compiled when using sky
Code, improves system data transmission rate.To solve overlapping multiplexing system in the related technology transmission reliability it is poor and
The lesser problem of transmission rate.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of data transmission method according to an embodiment of the present invention；
Fig. 2 is the schematic diagram of the precoding of optional embodiment according to the present invention；
Fig. 3 is the schematic diagram of the overlapped time division multiplexing coding of optional embodiment according to the present invention；
Fig. 4 is the schematic diagram of the overlapping frequency division multiplexing coding of optional embodiment according to the present invention；
Fig. 5 is the schematic diagram of the overlapping code division multiplexing coding of optional embodiment according to the present invention；
Fig. 6 is the flow chart of another data transmission method according to an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of data transmission device according to an embodiment of the present invention；
Fig. 8 is the structural block diagram of another data transmission device according to an embodiment of the present invention；
Fig. 9 is a kind of schematic diagram of OvTDM system of optional embodiment according to the present invention；
Figure 10 is a kind of schematic diagram of OvFDM system of optional embodiment according to the present invention；
Figure 11 is a kind of schematic diagram of OvCDM system of optional embodiment according to the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment 1
A kind of data transmission method is provided in the present embodiment, and Fig. 1 is that a kind of data according to an embodiment of the present invention pass
The flow chart of transmission method, as shown in Figure 1, the process includes the following steps:
Step S102 carries out precoding to data to be transmitted, obtains the first data；
Step S104 is interleaved first data, obtains the second data；
Step S106 is modulated second data, obtains third data；
Step S108 carries out overlapping multiplexing coding, Space Time Coding to the third data, obtains the first data flow；
Step S110 sends first data flow to receiving end.
Optionally, above-mentioned data transmission method can be, but not limited to the scene for being applied to overlapping multiplexing system transmission data
In.
Optionally, above-mentioned data transmission method can be, but not limited to be applied to sending ending equipment.
Optionally, in the present embodiment, above-mentioned overlapping multiplexing system can be, but not limited to include: overlapped time division multiplexing
(Overlapped Time Division Multiplexing, referred to as OvTDM) system, overlapping frequency division multiplexing
(Overlapped Frequency Division Multiplexing, referred to as OvFDM) system is overlapped code division multiplexing
(Overlapped Code Division Multiplexing, referred to as OvCDM) system etc..
Optionally, above-mentioned data transmission method can be, but not limited to be applied in parallel cascade structure, such as: Turbo-
OvXDM (X represents time T, frequency F, and code divides C, space S or mixing H etc.) system, the recursive OvXDM system of Turbo.
Optionally, above-mentioned data transmission method can be, but not limited to the serial concatenated structure applied to OvXDM, Mixed cascading
Structure etc..
Optionally, the method for precoding can be, but not limited to include: convolutional code, Turbo code, Turbo product code (Turbo
Product Code, TPC code) etc..
Optionally, in the present embodiment, in above-mentioned steps S104, the method for intertexture can be, but not limited to include: not advise
Then interweave, random interleaving, S intertexture, 64 × 64 array inter-leavings etc..First data are interleaved to obtain the second data and can make letter
The mistake for generating and concentrating that happens suddenly in road transmission process is decentralized to greatest extent.Such as: assuming that it is N that system input, which is length,
Bit stream, only the data instance explanation of 8 bits, x={+1 ,+1, -1 ,+1, -1, -1 ,+1 ,+1 ... } are handed in the past here
Data flow after knitting is x '={ -1, -1 ,+1, -1 ,+1, -1 ,+1 ,+1 ... }.
Through the above steps, the processing of precoding and intertexture is carried out to data to be transmitted, then to the obtained after intertexture
Two data are modulated, then obtain the first data to the third data progress overlapping multiplexing coding, the Space Time Coding that obtain after modulation
First data flow is sent to receiving end, after using precoding in overlapping multiplexing system, can increase overlapping multiplexing coding by stream
Equivalent encoding constraint length, considerable coding gain is provided, the error correcting capability of information flow is improved, and it is multiple to improve overlapping
With the transmission reliability of system；After Space Time Coding, system data transmission rate is improved.To solve in the related technology
The transmission reliability of overlapping multiplexing system is poor, the lesser problem of transmission rate.
Optionally, in above-mentioned steps S102, above-mentioned precoding is encoded including at least TPC code.Such as: it can be, but not limited to
Precoding is carried out to data to be transmitted in the following manner: data to be transmitted being added to the first matrix by column, to the first matrix
Each row encoded, obtain row encoder matrix, each column of row encoder matrix encoded, obtain the second matrix, will
Second matrix obtains the first data by column output.
Optionally, in the present embodiment, precoding process can tentatively encode incoming bit stream, improve information flow
Error correcting capability, reduce error rate of system, provide higher code rate, while enhancing the reliability of bit stream.The method of precoding
It can be, but not limited to include convolutional code, Turbo code, Turbo product code (Turbo Product Code, TPC code) etc..
Optionally, illustrate precoding process by taking TPC code as an example in an optional embodiment.TPC code belongs to Turbo
One kind of code, receiver similarly use Turbo decoding architecture.TPC coding can be a kind of array Turbo coding, packet
Containing two component coders of row and column, Fig. 2 is the schematic diagram of the precoding of optional embodiment according to the present invention, such as Fig. 2 institute
Show, precoding process is broadly divided into three steps: (1) information bit being first placed on a KC*KRMatrix in；(2) by the K of every rowC
A bits of encoded is N at lengthCCode word；(3) by each column KRA bits of encoded is at NRCode word.The N being finally encoded intoC*NR
Code word matrix completes cataloged procedure by column output, and the code rate of TPC coding isConstitute two dimension TPC code, component
Code can be convolutional code, be also possible to simple block code, such as Hamming code, BCH code, even parity check code.The coding of TPC
Array can also further extend to three-dimensional or more, for example add diagonal line coding again on the basis of two-dimentional ranks coding,
Matrix is expanded to a row or column check bit information again.
TPC coding has very strong flexibility, since the smallest hamming distance of TPC code is equal to component code and minimum Hamming distance
From product, therefore TPC code is obtained with excellent performance using simple Hamming code.For example component code use can only be corrected
One wrong extension (64,57) Hamming code can construct TPC (64,57) code that performance can be compared with Turbo code, should
Class coding not only has excellent error-correcting performance, but also code rate with higher.
It is alternatively possible to which data to be transmitted is split into multichannel data, prelist respectively to the multichannel data after fractionation
The processing such as code.
Optionally, above-mentioned intertexture includes at least irregular interweave.
Optionally, the mode of above-mentioned modulation can be, but not limited to include: BPSK, QPSK, 16QAM etc..
In an optional embodiment, being modulated to data can be converted into being suitable for by various digital baseband signals
The modulated signal of transmission.By taking BPSK is modulated as an example, data 1 are 1 through BPSK modulation output；Data 0 are modulated through BPSK and are exported
It is -1.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapped time division multiplexing (Overlapped
Time Division Multiplexing, OvTDM) coding, Fig. 3 is the overlapping time-division of optional embodiment according to the present invention
The schematic diagram of multiplexing and encoding, as shown in figure 3, detailed process the following steps are included:
(1) design generates the envelope waveform h (t) for sending signal first.
(2) by envelope waveform h (t) designed in (1) after specific time shifts, other each moment transmission letters are formed
Number envelope waveform h (t-i × △ T).
(3) the symbol x that will be sentiTo envelope waveform h (t-i × △ T) multiplication at the corresponding moment that (2) generate, obtain
To the signal waveform x to be sent at each momentih(t-i×△T)。
(4) (3) are formed by each waveform to be sent and carry out xiH (t-i × △ T) superposition forms transmitting signal waveform.
(5) signal sent can indicate are as follows:
Above formula is unfolded, may be expressed as:
It is i.e. that the form of the convolutional encoding process matrix of OvTDM system is equivalently represented are as follows: Y=H × X, wherein
Y is OvTDM encoded output sequence:
Size is (L+K-1) × 1
H is the corresponding form factor matrix of envelope waveform:
H size is (L+K-1) × L letter to be encoded
Number X:
X size is L × 1
When there is the road M signal to be encoded to carry out OvTDM coding, entire OvTDM cataloged procedure may be expressed as: Y1=H × X1,
Wherein H size is (L+K-1) × L, X1Size is L × M, Y1Size is (L-K+1) × M, Y1I-th be classified as the i-th tunnel wait for signal pass through
Corresponding output sequence after OvTDM coding.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapping frequency division multiplexing (Overlapped
Frequency Division Multiplexing, OvFDM) coding, Fig. 4 is the weight of optional embodiment according to the present invention
The schematic diagram of folded frequency division multiplexing coding, as shown in figure 4, detailed process the following steps are included:
(1) design generates the spectrum signal H (f) for sending signal first.
(2) spectrum signal H (f) designed by (1) is formed into other each frequencies after specific carriers spectrum intervals △ B displacement
The subcarrier spectrum waveform H (f-i × △ B) of △ B is divided between spectrum.
(3) the symbol X that will be sentiThe corresponding each subcarrier spectrum wave H (f-i × △ B) generated respectively with (2)
It is multiplied, obtains the spectrum modulation signal X by each subcarrier-modulatediH(f-i×△B)。
(4) (3) are formed by each spectrum modulation signal and carry out XiH (f-i × △ B) superposition, forms complex modulated signal
Frequency spectrum, spectrum modulation signal additive process may be expressed as:
(5) frequency spectrum for the complex modulated signal for generating (4) carries out discrete Fourier inverse transformation, ultimately forms the polyphony of time-domain
Signal processed, sending signal may be expressed as:
Signal(t)TX=ifft (S (f))
The cataloged procedure can equally be stated with matrix form, and this will not be repeated here.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapping code division multiplexing (Overlapped
Code Division Multiplexing, OvCDM) coding, Fig. 5 is the overlapping code point of optional embodiment according to the present invention
The schematic diagram of multiplexing and encoding, as shown in figure 5, detailed process the following steps are included:
(1) data to be sent are become into K sub-data stream by serioparallel exchange, the data flow of the i-th road is denoted as ui=ui, 0ui,1ui,2....Such as when K=2, u0=u0,0u0,2u0,4..., u1=u1,1u1,3u1,5...
(2) each circuit-switched data one shift register of feeding is weighted superposition, the weighting coefficient on the i-th tunnel is bi=
bi,0bi,1bi,2..., it is a complex vector.
(3) each road signal is added and is exported.
The output of final OvCDM encoder is c=c0c1c2...,
The code rate of OvCDM isWherein n is sub-data flow length.When n is very long, by shift register
The loss of code rate brought by trailing can be ignored, and then have rOvCDM≈k.Optionally, the overlapping that third data carry out is answered
It can be, but not limited to be overlapped time division multiplexing coding with coding；Space Time Coding can be, but not limited to be sky layered coding.Upper
It states in step S110, the first data flow is sent by the transmission antenna of the first preset quantity to receiving end, wherein first is default
The transmission antenna of quantity and the first data flow correspond.
In an optional embodiment, overlapping multiplexing and encoding output data can be carried out using empty layered coding
Coding, empty layered coding techniques is that data to be transmitted are divided into several data flows, is then passed on different antennas
It is defeated, to improve the transmission rate of system.
If there is the first preset quantity transmission antenna, then data will be divided into the first preset quantity group data in transmitting terminal
Stream is transmitted.By taking two transmission antennas as an example, illustrate data in the change procedure of transmitting terminal, it is specific as follows shown in:
Assuming that list entries length is L, former 16 data instances illustrate data variation process, preceding 16 list entries
Are as follows: { 1,0,1,1,1,1,0,0,1,1,1,0,1,0,1,1 }, by the data separating on the odd and even number position of the sequence: s1
={ 1,1,1,0,1,1,1,1 }, s2={ 0,1,1,0,1,0,0,1 }, wherein s1It is corresponding in the odd positions of list entries
Data, and s2For corresponding data on the even number position of list entries；Then precoding carried out to this two groups of data respectively, handed over
It knits, OvTDM coding, obtains coding output data and be respectively as follows: s'1=0.0072+0.0072i, 1.0072+0.9928i,
1.0072-0.9928i 1.0072+1.0072i }；s'2={ -0.0072+0.0072i, -0.9928+0.9928i, 1.0072-
1.0072i,0.9928-0.9928i}.By s'1, s'2As two-way output, sent by two transmission antennas.
Another data transmission method is additionally provided in the present embodiment, and Fig. 6 is another kind according to an embodiment of the present invention
The flow chart of data transmission method, as shown in fig. 6, the process includes the following steps:
Step S602 receives the second data flow, wherein the second data flow is passed through by the first data flow that transmitting terminal is sent
Data flow after transmission, the first data flow are to carry out precoding to data to be transmitted by transmitting terminal, obtain the first data, and
First data are interleaved, the second data are obtained, then the second data are modulated, obtain third data, then to third
Data carry out overlapping multiplexing coding, Space Time Coding, obtained data flow；
Step S604 detects the second data flow, obtains detection data；
Step S606, demodulates detection data, obtains solution adjusting data；
Step S608 is deinterleaved solution adjusting data, obtains deinterleaved data；
Step S610, decodes deinterleaved data, obtains decoding data；
Step S612, makes decisions decoding data, obtains judgement output data.
Optionally, above-mentioned data transmission method can be, but not limited to the scene for being applied to overlapping multiplexing system transmission data
In.
Optionally, in the present embodiment, above-mentioned overlapping multiplexing system can be, but not limited to include: overlapped time division multiplexing
(Overlapped Time Division Multiplexing, referred to as OvTDM) system, overlapping frequency division multiplexing
(Overlapped Frequency Division Multiplexing, referred to as OvFDM) system is overlapped code division multiplexing
(Overlapped Code Division Multiplexing, referred to as OvCDM) system etc..
Optionally, above-mentioned data transmission method can be, but not limited to be applied in parallel cascade structure, such as: Turbo-
OvXDM (X represents time T, frequency F, and code divides C, space S or mixing H etc.) system, the recursive OvXDM system of Turbo.
Optionally, above-mentioned data transmission method can be, but not limited to the serial concatenated structure applied to OvXDM, Mixed cascading
Structure etc..
Optionally, the method for above-mentioned detection can be, but not limited to include: Maximum Likelihood Detection (Maximum
Likelihood, ML), lowest mean square root error (Minimum mean square error, MMSE) detection and force zero
(Zero Forcing, ZF) detection etc..
Optionally, in the present embodiment, above-mentioned decoded mode can be, but not limited to include: map, logmap, max log
Map, sova etc..
Optionally, in the present embodiment, demodulation is to restore the process of information from the modulated signal for carrying message, it is to adjust
The inverse process of system.It is intuitively exactly the real part (modulation constellation of bpsk signal of receiving end output signal value so that BPSK is demodulated as an example
0) mapping, imaginary part are always.
Optionally, in the present embodiment, corresponding judgement output can be carried out to the output of demodulation.For example, hard decision, when
Output data is greater than 0, and judgement output is 1；Less than 0, judgement output is 0.
In the present embodiment, optionally, deinterleaving is the inverse process to interweave, suitable for data to be reverted to data to be transmitted
Sequence.
Through the above steps, receive transmitting terminal to data to be transmitted carry out precoding, intertexture, modulation, overlapping multiplexing coding,
The second data flow after transmission sent after Space Time Coding, the second data flow is detected, is demodulated, is deinterleaved,
Decoding and judgement, to realize the transmission of data.
It is alternatively possible to be compared with the second data flow with the data being all likely to be obtained after transmitting terminal is modulated,
To obtain most possible output data after ovennodulation.Such as: in above-mentioned steps S604, determine the second data flow and pre-
If the distance between each data in data acquisition system are worth, wherein include complete after transmitting terminal is modulated in preset data set
Data in the smallest preset data set of distance value are determined as detection data by the data that portion is likely to be obtained.
Optionally, the second data flow may include the data flow of the second preset quantity, wherein can in the following manner really
The distance between each data in fixed second data flow and preset data set value: each column data in third matrix is determined
It is worth with the distance between each data in preset data set, wherein the data flow pair of third matrix and the second preset quantity
It answers, and a data flow in the data flow of corresponding second preset quantity of every data line of third matrix.
In an optional embodiment, by taking Maximum Likelihood Detection as an example, Maximum Likelihood Detection does not need calculating matrix
It is inverse, but allow and receive signal and all possible transmission signal and be compared, generate the estimated value of maximum likelihoodHereIt can
To be obtained by following formula:
Assuming that receiving antenna number is N, then channel parameter matrix H if transmission antenna number is M1For the matrix of N × M, warp
It crosses before channel, the first data flow Y1, size is (L+K-1) × M, after channel, the second data that receiving end receives
Flow r=H1×Y1 T+ n, size is N × (L-K+1), wherein ()TIndicate that the transposition of (), n are noise, size is N × (L-K+
1)。
With transmission antenna number for 2, receiving antenna number is 2, and channel is independent, and corresponding channel parameter matrix H1ForFor, the first data flow Y1, size is (L-K+1) × 2, after channel, the second data flow for receivingWherein n size is 2 × (L-K+1), by the corresponding output r of channel1,r2It is preceding 4 value are as follows:
r1={ -0.0071-0.0123i, -0.1225+0.0488i, 0.0255-0.1149i, 0.1880-0.16831i }
r2={ 0.0799-0.1303i, 0.0359-0.0362i, 0.0060-0.1179i, 0.1944-0.3114i }
Then, data are received to two-way according to ML detection algorithm accordingly to be estimated:
The matrix that r is 2 × 4 is accordingly detected according to Leie, the first row as detected and selected r for the first time, and subsequent second
Column are until last 4th column.It is { -0.0071-0.0123i with first row；0.0799-0.1303i } for, it is assumed that use BPSK
Modulation, every bit there are two types of may+1, -1, and then have for 2 bits 4 kinds may i.e. { -1；- 1 }, { -1；+ 1 } ,+
1；- 1 }, {+1 ,+1 } indicates this four kinds arrangements with 2 × 1 vector respectively, then premultiplication channel parameter matrix H respectively1, obtain 4
Group 2 × 1 vector, then by 4 groups of vectors with receive data r first row be compared, finally selection and r first row away from
From closest to one group i.e. { -1 of (i.e. Euclid norm minimum)；+ 1 } as detection output, wherein first of -1 corresponding s1
The detection of bit exports, the detection output of first bit of+1 corresponding s2.Assuming that two paths of data detection output is respectivelyIt willAs output data in the odd positions of detection,As output data on the even number position of detection.
Embodiment 2
A kind of data transmission device is additionally provided in the present embodiment, and the device is real for realizing above-described embodiment and preferably
Mode is applied, the descriptions that have already been made will not be repeated.As used below, the soft of predetermined function may be implemented in term " module "
The combination of part and/or hardware.Although device described in following embodiment is preferably realized with software, hardware, or
The realization of the combination of software and hardware is also that may and be contemplated.
Fig. 7 is a kind of structural block diagram one of data transmission device according to an embodiment of the present invention, as shown in fig. 7, the device
Include:
Precoding module 72 obtains the first data for carrying out precoding to data to be transmitted；
Interleaving block 74 is coupled to precoding module 72, for being interleaved to the first data, obtains the second data；
Modulation module 76 is coupled to interleaving block 74, for being modulated to the second data, obtains third data；
Coding module 78 is coupled to modulation module 76, for carrying out overlapping multiplexing coding, Space Time Coding to third data,
Obtain the first data flow；
Sending module 710 is coupled to coding module 78, for sending the first data flow to receiving end.
Optionally, above-mentioned data transmission method can be, but not limited to the scene for being applied to overlapping multiplexing system transmission data
In.
Optionally, above-mentioned data transmission device can be, but not limited to be applied to sending ending equipment.
Optionally, in the present embodiment, above-mentioned overlapping multiplexing system can be, but not limited to include: overlapped time division multiplexing
(Overlapped Time Division Multiplexing, referred to as OvTDM) system, overlapping frequency division multiplexing
(Overlapped Frequency Division Multiplexing, referred to as OvFDM) system is overlapped code division multiplexing
(Overlapped Code Division Multiplexing, referred to as OvCDM) system etc..
Optionally, above-mentioned data transmission device can be, but not limited to be applied in parallel cascade structure, such as: Turbo-
OvXDM (X represents time T, frequency F, and code divides C, space S or mixing H etc.) system, the recursive OvXDM system of Turbo.
Optionally, above-mentioned data transmission device can be, but not limited to the serial concatenated structure applied to OvXDM, Mixed cascading
Structure etc..
Optionally, the method for precoding can be, but not limited to include: convolutional code, Turbo code, Turbo product code (Turbo
Product Code, TPC code) etc..
Optionally, in the present embodiment, in above-mentioned steps S104, the method for intertexture can be, but not limited to include: not advise
Then interweave, random interleaving, S intertexture, 64 × 64 array inter-leavings etc..First data are interleaved to obtain the second data and can make letter
The mistake for generating and concentrating that happens suddenly in road transmission process is decentralized to greatest extent.Such as: assuming that it is N that system input, which is length,
Bit stream, only the data instance explanation of 8 bits, x={+1 ,+1, -1 ,+1, -1, -1 ,+1 ,+1 ... } are handed in the past here
Data flow after knitting is x '={ -1, -1 ,+1, -1 ,+1, -1 ,+1 ,+1 ... }.
By above-mentioned apparatus, the processing of precoding and intertexture is carried out to data to be transmitted, then to the obtained after intertexture
Two data are modulated, then obtain the first data to the third data progress overlapping multiplexing coding, the Space Time Coding that obtain after modulation
First data flow is sent to receiving end, after using precoding in overlapping multiplexing system, can increase overlapping multiplexing coding by stream
Equivalent encoding constraint length, considerable coding gain is provided, the error correcting capability of information flow is improved, also, improves overlapping
The transmission reliability of multiplex system；After Space Time Coding, system data transmission rate is improved.To solve the relevant technologies
The transmission reliability of middle overlapping multiplexing system is poor, the lesser problem of transmission rate.
Optionally, above-mentioned precoding is encoded including at least TPC code.Such as: precoding module may include: adding unit,
For data to be transmitted to be added to the first matrix by column；First coding unit is compiled for each row to the first matrix
Code, obtains row encoder matrix；Second coding unit encodes for each column to row encoder matrix, obtains the second matrix；
Output unit, for the second matrix by column output, to be obtained the first data.
Optionally, in the present embodiment, precoding process can tentatively encode incoming bit stream, improve information flow
Error correcting capability, reduce error rate of system, provide higher code rate, while enhancing the reliability of bit stream.The method of precoding
It can be, but not limited to include convolutional code, Turbo code, Turbo product code (Turbo Product Code, TPC code) etc..
Optionally, illustrate precoding process by taking TPC code as an example in an optional embodiment.TPC code belongs to Turbo
One kind of code, receiver similarly use Turbo decoding architecture.TPC coding can be a kind of array Turbo coding, packet
Containing two component coders of row and column, Fig. 2 is the schematic diagram of the precoding of optional embodiment according to the present invention, such as Fig. 2 institute
Show, precoding process is broadly divided into three steps: (1) information bit being first placed on a KC*KRMatrix in；(2) by the K of every rowC
A bits of encoded is N at lengthCCode word；(3) by each column KRA bits of encoded is at NRCode word.The N being finally encoded intoC*NR
Code word matrix completes cataloged procedure by column output, and the code rate of TPC coding isConstitute two dimension TPC code, component
Code can be convolutional code, be also possible to simple block code, such as Hamming code, BCH code, even parity check code.The coding of TPC
Array can also further extend to three-dimensional or more, for example add diagonal line coding again on the basis of two-dimentional ranks coding,
Matrix is expanded to a row or column check bit information again.
TPC coding has very strong flexibility, since the smallest hamming distance of TPC code is equal to component code and minimum Hamming distance
From product, therefore TPC code is obtained with excellent performance using simple Hamming code.For example component code use can only be corrected
One wrong extension (64,57) Hamming code can construct TPC (64,57) code that performance can be compared with Turbo code, should
Class coding not only has excellent error-correcting performance, but also code rate with higher.
Optionally, above-mentioned intertexture includes at least irregular interweave.
Optionally, the mode of above-mentioned modulation can be, but not limited to include: BPSK, QPSK, 16QAM etc..
Optionally, coding module may include: third coding unit, for carrying out overlapping multiplexing coding to modulation data,
Obtain coded data；4th coding unit obtains the first data flow for carrying out Space Time Coding to coded data.
In an optional embodiment, being modulated to data can be converted into being suitable for by various digital baseband signals
The modulated signal of transmission.By taking BPSK is modulated as an example, data 1 are 1 through BPSK modulation output；Data 0 are modulated through BPSK and are exported
It is -1.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapped time division multiplexing (Overlapped
Time Division Multiplexing, OvTDM) coding, Fig. 3 is the overlapping time-division of optional embodiment according to the present invention
The schematic diagram of multiplexing and encoding, as shown in figure 3, detailed process the following steps are included:
(1) design generates the envelope waveform h (t) for sending signal first.
(2) by envelope waveform h (t) designed in (1) after specific time shifts, other each moment transmission letters are formed
Number envelope waveform h (t-i × △ T).
(3) the symbol x that will be sentiTo envelope waveform h (t-i × △ T) multiplication at the corresponding moment that (2) generate, obtain
To the signal waveform x to be sent at each momentih(t-i×△T)。
(4) (3) are formed by each waveform to be sent and carry out xiH (t-i × △ T) superposition forms transmitting signal waveform.
(5) signal sent can indicate are as follows:
Above formula is unfolded, may be expressed as:
It is i.e. that the form of the convolutional encoding process matrix of OvTDM system is equivalently represented are as follows: Y=H × X.Y is OvTDM volume
Code output sequence:
Size is (L+K-1) × 1
H is the corresponding form factor matrix of envelope waveform:
Size is (L+K-1) × L
X is signal to be encoded:
Size is L × 1
When there is the road M signal to be encoded to carry out OvTDM coding, entire OvTDM cataloged procedure may be expressed as: Y1=H × X1,
Wherein H size is (L+K-1) × L, X1Size is L × M, Y1Size is (L-K+1) × M, Y1I-th be classified as the i-th tunnel wait for signal pass through
Corresponding output sequence after OvTDM coding.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapping frequency division multiplexing (Overlapped
Frequency Division Multiplexing, OvFDM) coding, Fig. 4 is the weight of optional embodiment according to the present invention
The schematic diagram of folded frequency division multiplexing coding, as shown in figure 4, detailed process the following steps are included:
(1) design generates the spectrum signal H (f) for sending signal first.
(2) spectrum signal H (f) designed by (1) is formed into other each frequencies after specific carriers spectrum intervals △ B displacement
The subcarrier spectrum waveform H (f-i × △ B) of △ B is divided between spectrum.
(3) the symbol X that will be sentiThe corresponding each subcarrier spectrum wave H (f-i × △ B) generated respectively with (2)
It is multiplied, obtains the spectrum modulation signal X by each subcarrier-modulatediH(f-i×△B)。
(4) (3) are formed by each spectrum modulation signal and carry out XiH (f-i × △ B) superposition, forms complex modulated signal
Frequency spectrum, spectrum modulation signal additive process may be expressed as:
(5) frequency spectrum for the complex modulated signal for generating (4) carries out discrete Fourier inverse transformation, ultimately forms the polyphony of time-domain
Signal processed, sending signal may be expressed as:
Signal(t)TX=ifft (S (f))
The cataloged procedure can equally be stated with matrix form, and details are not described herein.
In an optional embodiment, above-mentioned overlapping multiplexing coding can be overlapping code division multiplexing (Overlapped
Code Division Multiplexing, OvCDM) coding, Fig. 5 is the overlapping code point of optional embodiment according to the present invention
The schematic diagram of multiplexing and encoding, as shown in figure 5, detailed process the following steps are included:
(1) data to be sent are become into K sub-data stream by serioparallel exchange, the data flow of the i-th road is denoted as ui=ui, 0ui,1ui,2....Such as when K=2, u0=u0,0u0,2u0,4..., u1=u1,1u1,3u1,5...
(2) each circuit-switched data one shift register of feeding is weighted superposition, the weighting coefficient on the i-th tunnel is bi=
bi,0bi,1bi,2..., it is a complex vector.
(3) each road signal is added and is exported.
The output of final OvCDM encoder is c=c0c1c2...,
The code rate of OvCDM isWherein n is sub-data flow length.When n is very long, by shift register
The loss of code rate brought by trailing can be ignored, and then have rOvCDM≈k。
Optionally, coding module is used to carry out overlapping multiplexing coding, Space Time Coding to third data, obtains the first data
Stream, wherein sending module includes: transmission unit, sends first to receiving end for the transmission antenna by the first preset quantity
Data flow, wherein the transmission antenna of the first preset quantity and the first data flow correspond.
Optionally, the overlapping multiplexing coding that third data carry out can be, but not limited to be overlapped time division multiplexing coding；It is empty
When coding can be, but not limited to be sky layered coding.
In an optional embodiment, overlapping multiplexing and encoding output data can be carried out using empty layered coding
Coding, empty layered coding techniques is that data to be transmitted are divided into several data flows, is then passed on different antennas
It is defeated, to improve the transmission rate of system.
If there is the first preset quantity transmission antenna, then data will be divided into the first preset quantity group data in transmitting terminal
Stream is transmitted.By taking two transmission antennas as an example, illustrate data in transmitting terminal treatment process, it is specific as follows shown in:
Assuming that list entries length is L, former 16 data instances come illustrate data in the change procedure of transmitting terminal, preceding 16
Position list entries are as follows: { 1,0,1,1,1,1,0,0,1,1,1,0,1,0,1,1 }, by the number on the odd and even number position of the sequence
According to separation: s1={ 1,1,1,0,1,1,1,1 }, s2={ 0,1,1,0,1,0,0,1 }, wherein s1For the odd positions of list entries
Upper corresponding data, and s2For corresponding data on the even number position of list entries；Then this two groups of data are carried out in advance respectively
Coding interweaves, OvTDM coding, obtains corresponding data and is respectively as follows: s'1=0.0072+0.0072i, 1.0072+0.9928i,
1.0072-0.9928i,1.0072+1.0072i}；s'2={ -0.0072+0.0072i, -0.9928+0.9928i, 1.0072-
1.0072i,0.9928-0.9928i}.By s'1, s'2As two-way output, sent by two transmission antennas.
Another data transmission device is additionally provided in the present embodiment, the device is real for realizing above-described embodiment and preferably
Mode is applied, the descriptions that have already been made will not be repeated.As used below, the soft of predetermined function may be implemented in term " module "
The combination of part and/or hardware.Although device described in following embodiment is preferably realized with software, hardware, or
The realization of the combination of software and hardware is also that may and be contemplated.
Fig. 8 is the structural block diagram of another data transmission device according to an embodiment of the present invention, as shown in figure 8, the device
Include:
Receiving module 802, for receiving the second data flow, wherein the second data flow is the first number sent by transmitting terminal
According to data flow of the stream after transmission, the first data flow is to carry out precoding to data to be transmitted by transmitting terminal, obtains the
One data, and the first data are interleaved, the second data are obtained, then the second data are modulated, obtain third data,
Overlapping multiplexing coding, Space Time Coding, obtained data flow are carried out to third data again；
Detection module 804 is coupled to receiving module 802, for detecting to the second data flow, obtains detection data；
Demodulation module 806 is coupled to detection module 804, for demodulating to detection data, obtains solution adjusting data；
De-interleaving block 808 is coupled to demodulation module 806, for being deinterleaved solution adjusting data, obtains deinterleaving number
According to
Decoding module 810 is coupled to de-interleaving block 808, for decoding to deinterleaved data, obtains decoding number
According to；
Judging module 812 is coupled to decoding module 810, for making decisions to decoding data, obtains judgement output number
According to.
Optionally, above-mentioned data transmission method can be, but not limited to the scene for being applied to overlapping multiplexing system transmission data
In.
Optionally, above-mentioned data transmission device can be, but not limited to be applied to receiving device.
Optionally, in the present embodiment, above-mentioned overlapping multiplexing system can be, but not limited to include: overlapped time division multiplexing
(Overlapped Time Division Multiplexing, referred to as OvTDM) system, overlapping frequency division multiplexing
(Overlapped Frequency Division Multiplexing, referred to as OvFDM) system is overlapped code division multiplexing
(Overlapped Code Division Multiplexing, referred to as OvCDM) system etc..
Optionally, above-mentioned data transmission device can be, but not limited to be applied in parallel cascade structure, such as: Turbo-
OvXDM (X represents time T, frequency F, and code divides C, space S or mixing H etc.) system, the recursive OvXDM system of Turbo.
Optionally, above-mentioned data transmission device can be, but not limited to the serial concatenated structure applied to OvXDM, Mixed cascading
Structure etc..
Optionally, the method for above-mentioned detection can be, but not limited to include: Maximum Likelihood Detection (Maximum
Likelihood, ML), lowest mean square root error (Minimum mean square error, MMSE) detection and force zero
(Zero Forcing, ZF) detection etc..
Optionally, in the present embodiment, demodulation is to restore the process of information from the modulated signal for carrying message, it is to adjust
The inverse process of system.It is intuitively exactly the real part (modulation constellation of bpsk signal of receiving end output signal value so that BPSK is demodulated as an example
0) mapping, imaginary part are always.
Optionally, in the present embodiment, deinterleaving is the inverse process to interweave, according to interleaving process, restores data to be transmitted
Sequentially.
Optionally, in the present embodiment, above-mentioned decoded mode can be, but not limited to include: map, log map, max log
Map, sova etc..
Optionally, in the present embodiment, corresponding judgement output can be carried out to the output of decoding.For example, hard decision, when
Output data is greater than 0, and judgement output is 1；Less than 0, judgement output is 0.
By above-mentioned apparatus, receive transmitting terminal to data to be transmitted carry out precoding, intertexture, modulation, overlapping multiplexing coding,
The second data flow after transmission sent after Space Time Coding, the second data flow is detected, is demodulated, is deinterleaved,
Decoding and judgement, to realize the transmission of data.
Optionally, detection module includes: the first determination unit, for determining in the second data flow and preset data set
The distance between each data value, wherein include the number being all likely to be obtained after transmitting terminal is modulated in preset data set
According to；Second determination unit, for the data in the smallest preset data set of distance value to be determined as detection data.
It is alternatively possible to be compared with the second data flow with the data being all likely to be obtained after transmitting terminal is modulated,
To obtain most possible output data after ovennodulation.
Optionally, the second data flow includes the data flow of the second preset quantity, wherein the first determination unit is used for: being determined
The distance between each column data in third matrix and each data in preset data set value, wherein third matrix with
The data flow of second preset quantity is corresponding, and in the data flow of corresponding second preset quantity of every data line of third matrix
One data flow.
In an optional embodiment, by taking Maximum Likelihood Detection as an example, Maximum Likelihood Detection does not need calculating matrix
It is inverse, but allow and receive signal and all possible transmission signal and be compared, generate the estimated value of maximum likelihoodHereIt can
To be obtained by following formula:
Assuming that receiving antenna number is N, then channel parameter matrix H if transmission antenna number is M1For the matrix of N × M, warp
It crosses before channel, the first data flow Y1, size is (L+K-1) × M, after channel, the second data that receiving end receives
Flow r=H1×Y1 T+ n, size is N × (L-K+1), wherein ()TIndicate that the transposition of (), n are noise, size is N × (L-K+
1)。
With transmission antenna number for 2, receiving antenna number is 2, and channel is independent, and corresponding channel parameter matrix H1ForFor, the first data flow Y1, size is (L-K+1) × 2, after channel, the second data flow for receivingWherein n size is 2 × (L-K+1), by the corresponding output r of channel1,r2First four value
Are as follows:
r1={ -0.0071-0.0123i, -0.1225+0.0488i, 0.0255-0.1149i, 0.1880-0.16831i }
r2={ 0.0799-0.1303i, 0.0359-0.0362i, 0.0060-0.1179i, 0.1944-0.3114i }
Then, data are received to two-way according to ML detection algorithm accordingly to be estimated:
The matrix that r is 2 × 4 is accordingly detected according to Leie, the first row as detected and selected r for the first time, and subsequent second
Column are until last 4th column.It is { -0.0071-0.0123i with first row；0.0799-0.1303i } for, it is assumed that use BPSK
Modulation, every bit there are two types of may+1, -1, and then have for 2 bits 4 kinds may i.e. { -1；- 1 }, { -1；+ 1 } ,+
1；- 1 }, {+1 ,+1 } indicates this four kinds arrangements with 2 × 1 vector respectively, then premultiplication channel parameter matrix H respectively1, obtain 4
Group 2 × 1 vector, then by 4 groups of vectors with receive data r first row be compared, finally selection and r first row away from
From closest to one group i.e. { -1 of (i.e. Euclid norm minimum)；+ 1 } as detection output, wherein first of -1 corresponding s1
The detection of bit exports, the detection output of first bit of+1 corresponding s2.Assuming that two paths of data detection output is respectivelyIt willAs output data in the odd positions of detection,As output data on the even number position of detection.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this: above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned module be located at it is more
In a processor.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, the ordinary skill of this field
Personnel can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the spirit and scope of the present invention, this
The protection scope of invention should subject to the claims.
Embodiment 3
A kind of data transmission system is additionally provided in the present embodiment, which includes: any of the above-described for transmitting terminal
Device and any of the above-described be used for receiving end device.
Optionally, above-mentioned data transmission system can be, but not limited to be applied to satellite communication, microwave horizon communication, scatter and lead to
Letter, atmosphere optic communication, infrared communication communicate etc. in any wireless communication system with aquatic.Both it is wireless large capacity had been can be applied to
Transmission, also can be applied to the light-duty radio system of low capacity.
In an optional embodiment, by taking OvTDM system as an example, Fig. 9 is optional embodiment according to the present invention
A kind of OvTDM system schematic diagram, as shown in figure 9, by information source end input bit { 0,1 } sequence, then it is carried out a series of
Flow processing, wherein incoming bit stream first passes through serioparallel exchange, then respectively carry out precoding, intertexture, modulation, OvTDM coding,
Space Time Coding is sent by multiple transmission antennas, by the transmission of channel, receives data by multiple receiving antennas, then right
Multichannel data carries out Maximum Likelihood Detection, demodulation, deinterleaving, decoding, judgement output, finally carries out parallel-serial conversion.
In another optional embodiment, by taking OvFDM system as an example, Figure 10 is optional embodiment party according to the present invention
A kind of schematic diagram of OvFDM system of formula by information source end input bit { 0,1 } sequence, first carries out the sequence as shown in Figure 10
Serioparallel exchange, then carry out precoding, intertexture, modulation, OvFDM coding, Space Time Coding respectively to it.Transmitting terminal will be after coded modulation
Signal launch by antenna, signal by wireless channel transmit, receiving end by receive signal first carry out FFT operation, so
Maximum Likelihood Detection, demodulation, deinterleaving, decoding, judgement output are carried out afterwards, finally carry out parallel-serial conversion.
In another optional embodiment, by taking OvCDM system as an example, Figure 11 is optional embodiment party according to the present invention
A kind of schematic diagram of OvCDM system of formula by information source end input bit { 0,1 } sequence, is first gone here and there and is turned as shown in figure 11
It changes, then carries out precoding, intertexture, modulation, OvCDM coding, Space Time Coding respectively to it.Transmitting terminal is by the signal after coded modulation
Launch by antenna, signal is transmitted by wireless channel, and receiving end will receive signal, then carry out Maximum Likelihood Detection,
Demodulation deinterleaves, decoding, judgement output, finally carries out parallel-serial conversion.
Embodiment 4
The embodiments of the present invention also provide a kind of storage medium, which includes the program of storage, wherein above-mentioned
Program executes method described in any of the above embodiments when running.
Optionally, in the present embodiment, above-mentioned storage medium can be set to store the journey for executing following steps
Sequence code:
S1 carries out precoding to data to be transmitted, obtains the first data；
S2 is interleaved the first data, obtains the second data；
S3 is modulated the second data, obtains third data；
S4 carries out overlapping multiplexing coding, Space Time Coding to third data, obtains the first data flow；
S5 sends the first data flow to receiving end.
Optionally, storage medium is also configured to store the program code for executing following steps:
S1 receives the second data flow, wherein the second data flow is that the first data flow sent by transmitting terminal is passed by channel
Data flow after defeated, the first data flow are to carry out precoding to data to be transmitted by transmitting terminal, obtain the first data, and to first
Data are interleaved, and obtain the second data, are then modulated to the second data, obtain third data, then to third data into
Row overlapping multiplexing coding, Space Time Coding, obtained data flow；
S2 detects the second data flow, obtains detection data；
S3 demodulates detection data, obtains solution adjusting data；
S4 is deinterleaved solution adjusting data, obtains deinterleaved data；
S5 decodes deinterleaved data, obtains decoding data；
S6 makes decisions decoding data, obtains judgement output data.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to: USB flash disk, read-only memory (Read-
Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard
The various media that can store program code such as disk, magnetic or disk.
The embodiments of the present invention also provide a kind of processor, the processor is for running program, wherein program operation
Step in Shi Zhihang any of the above-described method.
Optionally, in the present embodiment, above procedure is for executing following steps:
S1 carries out precoding to data to be transmitted, obtains the first data；
S2 is interleaved the first data, obtains the second data；
S3 is modulated the second data, obtains third data；
S4 carries out overlapping multiplexing coding, Space Time Coding to third data, obtains the first data flow；
S5 sends the first data flow to receiving end.
Optionally, in the present embodiment, above procedure is also used to execute following steps:
S1 receives the second data flow, wherein the second data flow is that the first data flow sent by transmitting terminal is passed by channel
Data flow after defeated, the first data flow are to carry out precoding to data to be transmitted by transmitting terminal, obtain the first data, and to first
Data are interleaved, and obtain the second data, are then modulated to the second data, obtain third data, then to third data into
Row overlapping multiplexing coding, Space Time Coding, obtained data flow；
S2 detects the second data flow, obtains detection data；
S3 demodulates detection data, obtains solution adjusting data；
S4 is deinterleaved solution adjusting data, obtains deinterleaved data；
S5 decodes deinterleaved data, obtains decoding data；
S6 makes decisions decoding data, obtains judgement output data.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.It is all within principle of the invention, it is made it is any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (21)
1. a kind of data transmission method characterized by comprising
Precoding is carried out to data to be transmitted, obtains the first data；
First data are interleaved, the second data are obtained；
Second data are modulated, third data are obtained；
Overlapping multiplexing coding, Space Time Coding are carried out to the third data, obtain the first data flow；
First data flow is sent to receiving end.
2. the method according to claim 1, wherein the precoding includes TPC code coding.
3. the method according to claim 1, wherein described interweave including random interleaving.
4. according to the method for claim 1, it is characterised in that, the modulation includes that BPSK is modulated.
5. the method according to claim 1, wherein
The overlapping multiplexing coding includes that overlapped time division multiplexing encodes；
The Space Time Coding includes empty layered coding.
6. the method according to any one of claims 1 to 5, which is characterized in that the receiving end Xiang Suoshu sends described first
Data flow includes:
First data flow is sent by the transmission antenna of the first preset quantity to the receiving end, wherein described first
The transmission antenna of preset quantity and first data flow correspond.
7. a kind of data transmission method characterized by comprising
Receive the second data flow, wherein second data flow is to pass through transmission by the first data flow that transmitting terminal is sent
Data flow afterwards, first data flow are to carry out precoding to data to be transmitted by the transmitting terminal, obtain the first data, and
First data are interleaved, the second data are obtained, then second data are modulated, obtain third data,
Overlapping multiplexing coding, Space Time Coding, obtained data flow are carried out to the third data again；
Second data flow is detected, detection data is obtained；
The detection data is demodulated, solution adjusting data is obtained
The solution adjusting data is deinterleaved, deinterleaved data is obtained；
The deinterleaved data is decoded, decoding data is obtained；
The decoding data is made decisions, judgement output data is obtained.
8. obtaining the inspection the method according to the description of claim 7 is characterized in that detecting to second data flow
Measured data includes:
Determine the distance between each data in second data flow and preset data set value, wherein the present count
According to including the data that are all likely to be obtained after transmitting terminal modulation in set；
Data in the smallest preset data set of the distance value are determined as the detection data.
9. according to the method described in claim 8, it is characterized in that, second data flow includes the data of the second preset quantity
Stream, wherein determine that the distance between second data flow and each data in preset data set value include:
Determine the distance between each column data in third matrix and each data in preset data set value,
In, third matrix is corresponding with the data flow of second preset quantity, and every data line of the third matrix corresponds to institute
State a data flow in the data flow of the second preset quantity.
10. a kind of data transmission device characterized by comprising
Precoding module obtains the first data for carrying out precoding to data to be transmitted；
Interleaving block obtains the second data for being interleaved to first data；
Modulation module obtains third data for being modulated to second data；
Coding module obtains the first data flow for carrying out overlapping multiplexing coding, Space Time Coding to the third data；
Sending module, for sending first data flow to receiving end.
11. device according to claim 10, which is characterized in that the precoding includes TPC code coding.
12. device according to claim 10, which is characterized in that described to interweave including random interleaving.
13. device according to claim 10, which is characterized in that the modulation includes that BPSK is modulated.
14. device according to claim 10, which is characterized in that
The overlapping multiplexing coding includes that overlapped time division multiplexing encodes；
The Space Time Coding includes empty layered coding.
15. device described in any one of 0 to 14 according to claim 1, which is characterized in that the sending module includes:
Transmission unit, for first data flow to be sent by the transmission antenna of the first preset quantity to the receiving end,
Wherein, the transmission antenna of first preset quantity and first data flow correspond.
16. a kind of data transmission device characterized by comprising
Receiving module, for receiving the second data flow, wherein second data flow is the first data flow sent by transmitting terminal
Data flow after transmission, first data flow are to carry out precoding to data to be transmitted by the transmitting terminal, are obtained
It is interleaved to the first data, and to first data, obtains the second data, then second data are modulated,
Third data are obtained, then overlapping multiplexing coding, Space Time Coding, obtained data flow are carried out to the third data；
Detection module obtains detection data for detecting to second data flow；
Demodulation module obtains solution adjusting data for demodulating to the detection data；
De-interleaving block obtains deinterleaved data for being deinterleaved to the solution adjusting data；
Decoding module obtains decoding data for decoding to the deinterleaved data；
Judging module obtains judgement output data for making decisions to the decoding data.
17. device according to claim 16, which is characterized in that the detection module includes:
First determination unit, for determining the distance between each data in second data flow and preset data set
Value, wherein include the data being all likely to be obtained after transmitting terminal modulation in the preset data set；
Second determination unit, for the data in the smallest preset data set of the distance value to be determined as the detection
Data.
18. device according to claim 17, which is characterized in that second data flow includes the number of the second preset quantity
According to stream, wherein first determination unit is used for:
Determine the distance between each column data in third matrix and each data in preset data set value,
In, third matrix is corresponding with the data flow of second preset quantity, and every data line of the third matrix corresponds to institute
State a data flow in the data flow of the second preset quantity.
19. a kind of data transmission system characterized by comprising device described in any one of claim 10 to 15 and power
Benefit require any one of 16 to 18 described in device.
20. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein when described program is run
Method described in any one of perform claim requirement 1 to 9.
21. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run
Benefit require any one of 1 to 9 described in method.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491494A (en) * | 2019-09-11 | 2021-03-12 | 中国移动通信有限公司研究院 | Code determination method, device, equipment and storage medium |
| CN114978428A (en) * | 2022-05-25 | 2022-08-30 | 中山智联未来科技有限公司 | Wireless transmission method, system and storage medium for resisting Doppler interference |
| WO2022217593A1 (en) * | 2021-04-16 | 2022-10-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Overlap encoding and decoding for multicarrier transmission schemes |
-
2017
- 2017-11-27 CN CN201711212795.2A patent/CN109842460A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 张婷: "重叠码分复用多址技术及信道估计的研究", 《中国优秀博硕士学位论文全文数据库(硕士) 信息科技辑》 * |
| 王雪松: "未来移动通信关键技术研究", 《中国博士学位论文全文数据库 信息科技辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491494A (en) * | 2019-09-11 | 2021-03-12 | 中国移动通信有限公司研究院 | Code determination method, device, equipment and storage medium |
| WO2022217593A1 (en) * | 2021-04-16 | 2022-10-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Overlap encoding and decoding for multicarrier transmission schemes |
| CN114978428A (en) * | 2022-05-25 | 2022-08-30 | 中山智联未来科技有限公司 | Wireless transmission method, system and storage medium for resisting Doppler interference |
| CN114978428B (en) * | 2022-05-25 | 2024-04-02 | 中山智联未来科技有限公司 | Doppler interference resistant wireless transmission method, system and storage medium |
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