CN109962752A - Overlapping multiplexing coding method, device and system - Google Patents
Overlapping multiplexing coding method, device and system Download PDFInfo
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- CN109962752A CN109962752A CN201711427631.1A CN201711427631A CN109962752A CN 109962752 A CN109962752 A CN 109962752A CN 201711427631 A CN201711427631 A CN 201711427631A CN 109962752 A CN109962752 A CN 109962752A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
- H04L27/364—Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
Abstract
The invention discloses a kind of overlapping multiplexing coding methods, device and system.Wherein, this method comprises: obtaining initial data to be encoded stream, wherein initial data to be encoded stream is binary data to be encoded stream；By carrying out pure overlapping multiplexing coding to binary data to be encoded stream, the circulation of binary data to be encoded is changed to multicomponent coding data flow；Offset overlapping multiplexing coding is carried out to multicomponent coding data flow, wherein offset overlapping multiplexing coding obtains the coding result of initial data to be encoded stream for multicomponent coding data flow to be carried out displacement overlapping.The present invention solves in low frequency spectrum efficiency band, the lower technical problem of the system gain of OvXDM system.
Description
Technical field
The present invention relates to field of signal processing, in particular to a kind of overlapping multiplexing coding method, device and system.
Background technique
OvXDM system be represented by overlapped time division multiplexing (Overlapped Time Division Multiplexing,
OvTDM) system, overlapping frequency division multiplexing (Overlapped Frequency Division Multiplexing, OvFDM) system
System, overlapping code division multiplexing (Overlapped Code Division Multiplexing, OvCDM) system, overlapping space division multiplexing
(Overlapped Space Division Multiplexing, OvSDM) system, overlapping hybrid multiplex (Overlapped
Hybrid Division Multiplexing, OvHDM) system etc..
Intersymbol overlapping is utilized in OvXDM system, constructs intersymbol coding bound relationship, by the constraint relationship come
Corresponding system gain is obtained, the transmission reliability of system is improved, so as to realize high-frequency efficiency transmission, in practical application
In, the higher the better for the gain of system, when spectrum efficiency be greater than 6bits/s/Hz when, OvXDM system performance is preferable, in addition surmount how
Shannon limit under Qwest's criterion；But when system spectral efficiency is less than 6bits/s/Hz, system performance is compared to M-QAM etc.
Transmission mode, advantage are not it is obvious that not still being able to satisfy the demand of part scene.
For in low frequency spectrum efficiency band, the lower problem of the system gain of OvXDM system not yet proposes effective at present
Solution.
Summary of the invention
The embodiment of the invention provides a kind of overlapping multiplexing coding methods, device and system, at least to solve in low frequency spectrum
In efficiency band, the lower technical problem of the system gain of OvXDM system.
According to an aspect of an embodiment of the present invention, provide a kind of overlapping multiplexing coding method, comprising: obtain initially to
Encoded data stream, wherein initial data to be encoded stream is binary data to be encoded stream；By being carried out to binary data to be encoded stream
The circulation of binary data to be encoded is changed to multicomponent coding data flow by pure overlapping multiplexing coding；Multicomponent coding data flow is carried out
Deviate overlapping multiplexing coding, wherein offset overlapping multiplexing coding obtains just for multicomponent coding data flow to be carried out displacement overlapping
The coding result of beginning data to be encoded stream.
Further, binary data to be encoded stream includes: first via data to be encoded stream and the second road data to be encoded stream,
By carrying out pure overlapping multiplexing coding to binary data to be encoded stream, the circulation of binary data to be encoded is changed to multicomponent coding number
According to stream, comprising: the binary data to be encoded in first via data to be encoded stream and the second road data to be encoded stream circulate respectively
It is changed to corresponding multicomponent coding data flow, obtains first via coding result and the second tunnel coding result；By first via coding result
It is overlapped with the second tunnel coding result, obtains the corresponding multicomponent coding data flow of initial data to be encoded stream.
Further, respectively by the binary number to be encoded in first via data to be encoded stream and the second road data to be encoded stream
It is changed to corresponding multicomponent coding data flow according to circulation, obtains first via coding result and the second tunnel coding result, comprising: respectively will
Every road data to be encoded stream carries out serioparallel exchange, obtains K1Sub-data, wherein K1For the bit number for including in each symbol；
By K1Sub-data is weighted respectively, wherein the weighting coefficient of the n-th circuit-switched data is 2n-1, the value range of n is [1, K1]；It will
Weighted results are summed, and the coding result of every road data to be encoded stream is obtained.
Further, first via data to be encoded stream is the road I data to be encoded stream, and the second road data to be encoded stream is the road Q
First via coding result and the second tunnel coding result are overlapped by data to be encoded stream, obtain initial data to be encoded stream pair
The multicomponent coding data flow answered, comprising: the road I data to be encoded stream and the road Q data to be encoded stream are folded by following formula
Add: P=PI+j*PQ, wherein P is for characterizing multicomponent coding data flow, PIFor characterizing the coding knot of the road I data to be encoded stream
Fruit, PQFor characterizing the coding result of the road Q data to be encoded stream.
Further, offset overlapping multiplexing coding is carried out to multicomponent coding data flow, obtains initial data to be encoded stream
Overlapping multiplexing coding result, comprising: envelope waveform is generated in modulation domain according to preset design parameter, and according to overlapping multiplexing
Number is shifted envelope waveform in modulation domain by preset shift intervals, obtains multiple displacement Envelop waves in modulation domain
Shape；Multicomponent coding data flow is multiplied with corresponding displacement envelope waveform respectively, obtains multiple modulation waveforms in modulation domain；It will
Multiple modulation envelope waveforms are overlapped in modulation domain, obtain the coding result of initial data to be encoded stream.
According to another aspect of an embodiment of the present invention, a kind of overlapping multiplexing code device is additionally provided, comprising: obtain mould
Block, for obtaining initial data to be encoded stream, wherein initial data to be encoded stream is binary data to be encoded stream；First coding
Module, for by carrying out pure overlapping multiplexing coding to binary data to be encoded stream, the circulation of binary data to be encoded to be changed to
Multicomponent coding data flow；Second coding module, for carrying out offset overlapping multiplexing coding to multicomponent coding data flow, wherein partially
Overlapping multiplexing coding is moved for multicomponent coding data flow to be carried out displacement overlapping, obtains the coding knot of initial data to be encoded stream
Fruit.
Further, binary data to be encoded stream includes: first via data to be encoded stream and the second road data to be encoded stream,
First coding module includes: encoding submodule, for respectively by first via data to be encoded stream and the second road data to be encoded stream
In binary data to be encoded circulation be changed to corresponding multicomponent coding data flow, obtain first via coding result and the second road coding
As a result.It is superimposed submodule, for first via coding result and the second tunnel coding result to be overlapped, obtains initial number to be encoded
According to the corresponding multicomponent coding data flow of stream.
According to another aspect of an embodiment of the present invention, a kind of serially concatenated overlapping multiplexing system is additionally provided, comprising: first
Encoder, will by carrying out pure overlapping multiplexing coding to binary data to be encoded stream for obtaining initial data to be encoded stream
The circulation of binary data to be encoded is changed to multicomponent coding data flow, wherein initial data to be encoded stream is binary data to be encoded stream；
Second encoder is connected with the first encoder, for carrying out offset overlapping multiplexing coding to multicomponent coding data flow, wherein partially
Overlapping multiplexing coding is moved for multicomponent coding data flow to be carried out displacement overlapping, obtains the coding knot of initial data to be encoded stream
Fruit.
According to another aspect of an embodiment of the present invention, a kind of storage medium is additionally provided, storage medium includes the journey of storage
Sequence, wherein equipment where control storage medium executes above-mentioned folded multiplexing and encoding method in program operation.
According to another aspect of an embodiment of the present invention, a kind of processor is additionally provided, processor is used to run program,
In, program executes above-mentioned overlapping multiplexing coding method when running.
In embodiments of the present invention, initial data to be encoded stream is obtained, it is pure by being carried out to binary data to be encoded stream
The circulation of binary data to be encoded is changed to multicomponent coding data flow, then carried out to multicomponent coding data flow inclined by overlapping multiplexing coding
Overlapping multiplexing coding is moved, the coding result of initial data to be encoded stream is obtained.Above scheme realize to sent initially to
The two-stage of encoded data stream encodes, and on the one hand can increase the equivalent encoding constraint length of OvXDM coding, provide considerable coding
On the other hand gain can reduce the spectrum efficiency of OvXDM, channel coding low using code rate, high gain can be significantly
OvXDM is improved in the performance of low frequency spectrum efficiency band, level number and complexity needed for reducing under identical spectrum efficiency make system
Performance gets a promotion.
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 the flow chart of overlapping multiplexing coding method according to an embodiment of the present invention；
Fig. 2 a be α be 2.5 when Gaussian window frequency-domain waveform figure；
Fig. 2 b be α be 2.5 when Gaussian window time domain waveform；
Fig. 3 a is the waveform coding frequency domain figure of the serially concatenated OvFDM structure of the application；
Fig. 3 b is the waveform coding frequency domain figure of OvFDM structure in the prior art；
Fig. 4 a is the waveform coding time-domain diagram of the serially concatenated OvFDM structure of the application；
Fig. 4 b is the waveform coding time-domain diagram of OvFDM structure in the prior art；
Fig. 5 is the schematic diagram of overlapping multiplexing code device according to an embodiment of the present invention；
Fig. 6 is the schematic diagram of overlapping multiplexing system according to an embodiment of the present invention；And
Fig. 7 is the schematic diagram according to a kind of overlapping Frequency Division Multiplexing system of the embodiment of the present application.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
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.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
Embodiment 1
According to embodiments of the present invention, a kind of embodiment of overlapping multiplexing coding method is provided, it should be noted that attached
The step of process of figure illustrates can execute in a computer system such as a set of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, it can be to be different from shown by sequence execution herein
Or the step of description.
Fig. 1 is the flow chart of overlapping multiplexing coding method according to an embodiment of the present invention, as shown in Figure 1, this method includes
Following steps:
Step S102 obtains initial data to be encoded stream, wherein initial data to be encoded stream is binary data to be encoded
Stream.
Specifically, above-mentioned initial data to be encoded stream is signal to be sent, signal to be sent is binary data stream.
Step S104, by carrying out pure overlapping multiplexing coding to binary data to be encoded stream, by binary data to be encoded
Circulation is changed to multicomponent coding data flow.
To apply, in OvFDM, (Overlapped Frequency Division Multiplexing, overlapping frequency division are multiple
With) for system, above-mentioned pure overlapping multiplexing coding (Pure-OvFDM) is not mutually displaced in an encoding process, purpose
It is to change the circulation of independent binary data into multivariate data stream.Being overlapped tuple at it is K1(K1> 0) in the case where, it is multiplexed waveform
It is T=K for width1*TbRectangular wave, wherein TbFor data bit width.
It in an alternative embodiment, is length for N with system inputbBit stream For, output is N after P-OvFDM is encodedsA symbol, if each symbol includes K bit number, Ns=Nb*
K。
Step S106 carries out offset overlapping multiplexing coding to multicomponent coding data flow, wherein offset overlapping multiplexing coding is used
In multicomponent coding data flow is carried out displacement overlapping, the coding result of initial data to be encoded stream is obtained.
Above-mentioned offset overlapping multiplexing coding (S-OvFDM) is used to multivariate data stream carrying out displacement overlapping.Its shift intervals
For K1*Tb(waveform widths of the rectangular wave i.e. after Pure-OvFDM), overlapping tuple are Multiplexing
Waveform is real number waveform h (t), duration Tλ=λ * K1*K2*Tb.Wherein, λ is pulse width coefficient, is defined as: width is
T1Rectangular wave by filtering after broadening be T2, pulse width coefficient lambda=T2/T1.λ=1 of rectangular wave, T2Finger accounts for gross energy
99.99%~99.999% waveform widths are selected, it is clear that λ >=1 by the required height for accounting for gross energy percentage.
Above-mentioned overlap coefficient is further described, due to " impact " interval inputted when carrying out S-OvFDM coding
(i.e. shift intervals) are K1*TbIf S-OvFDM multiplexing waveform h (t) is that width is T=K1*K2*TbRectangular wave, then S-OvFDM
Overlap coefficient be K2；If the h (t) of S-OvFDM is that width is Tλ=λ * K1*K2*TbNon-rectangle wave, then its be overlapped tuple will increase
Greatly
After first order coding P-OvFDM is obtained output symbol sequence by above-mentioned steps, special place is carried out to the symbol sebolic addressing
Reason, then second level coding i.e. S-OvFDM coding is carried out, to form the waveform after frequency domain overlapping, then by signal by fourier contravariant
It changes and is converted to time-domain signal, time-domain signal is emitted to receiving end by antenna again at this time.The form of above-mentioned specially treated can be with
By many kinds, such as: normalized improves (increase recursive feedback mode) etc. to convolutional encoding model.If
In OvTDM system, then it is not necessarily to Fourier transform after carrying out S-OvTDM coding, receiving end is directly emitted to by antenna.
The overlapping multiplexing coding method that the above embodiments of the present application propose realizes pair of serially concatenated overlapping multiplexing system
The coding of signal to be encoded, in the following, by taking OvFDM as an example, by serially concatenated overlapping multiplexing structure with it is in the prior art Chong Die multiple
It is compared with structure and M-QAM system:
The spectrum efficiency of serially concatenated OvFDM system is η=2K1K2/ symbol, i.e., each symbol can transmit 2K1K2Letter
Breath；Output level number isThe spectrum efficiency of OvFDM system is η=K/ symbol, output level in the prior art
Number is K+1；And the level number with qam signals of spectrum efficiencies such as frequencies is then
From the foregoing, it will be observed that comparison serially concatenated OvFDM and common OvFDM structure, serial concatenated structure introduce considerable volume
Code gain；Compare serially concatenated OvFDM and M-QAM, in the case where same spectrum efficiency, level needed for serial concatenated structure
Number is less, and simultaneity factor complexity is lower.
Specifically, by taking the multiplexing waveform of the present embodiment second level coding (S-OvFDM) is Gaussian window as an example, the letter of Gaussian window
Number expression formula are as follows:
Wherein, N is window length, and-N/2≤n≤N/2, α are parameter preset, and it is 2.5 that attached drawing 2a and Fig. 2 b, which respectively illustrate α,
The frequency-domain waveform and time domain waveform of Shi Gaosi (Gaussian) window.
The waveform coding frequency domain of the waveform coding frequency domain figure of serially concatenated OvFDM structure and in the prior art OvFDM structure
Figure is as shown in Figure 3a and Figure 3b shows respectively, as seen from the figure, due to introducing first order coding P-OvFDM in serial concatenated structure,
Therefore superimposed waveform introduces coding gain.Frequency-domain waveform is converted into time-domain signal by fourier inverse transformation, is corresponded to
Serially concatenated OvFDM structure waveform coding time-domain diagram and OvFDM structure waveform coding time-domain diagram respectively such as Fig. 4 a and figure
Shown in 4b.
From the foregoing, it will be observed that the above embodiments of the present application obtain initial data to be encoded stream, by binary data to be encoded stream
Pure overlapping multiplexing coding is carried out, the circulation of binary data to be encoded is changed to multicomponent coding data flow, then to multicomponent coding data
Line displacement overlapping multiplexing coding is flowed into, the coding result of initial data to be encoded stream is obtained.Above scheme is realized to be sent
Initial data to be encoded stream two-stage coding, on the one hand can increase OvXDM coding equivalent encoding constraint length, providing can
On the other hand the coding gain of sight can reduce the spectrum efficiency of OvXDM, channel coding low using code rate, high gain can
Level number and complexity to increase substantially OvXDM in the performance of low frequency spectrum efficiency band, needed for reducing under identical spectrum efficiency
Degree, makes system performance get a promotion.
Optionally, according to the above embodiments of the present application, binary data to be encoded stream include: first via data to be encoded stream and
Second road data to be encoded stream, by carrying out pure overlapping multiplexing coding to binary data to be encoded stream, by binary number to be encoded
Multicomponent coding data flow is changed to according to circulation, comprising:
Step S1041, it is respectively that the binary in first via data to be encoded stream and the second road data to be encoded stream is to be encoded
Stream compression is changed to corresponding multicomponent coding data flow, obtains first via coding result and the second tunnel coding result.
Specifically, above-mentioned first via data to be encoded stream and the second road data to be encoded stream can be respectively that the road I is to be encoded
Data flow and the road Q data to be encoded stream.Multichannel sub-data flow can be obtained by the way that data to be encoded stream is carried out serioparallel exchange, then
Respectively to every sub-data stream multiplied by corresponding weighting coefficient, and it is more to get arriving to sum to the weighted results of multichannel sub-data flow
Primitive encoding data flow.
First via coding result and the second tunnel coding result are overlapped, obtain initial data to be encoded by step S1043
Flow corresponding multicomponent coding data flow.
Optionally, according to the above embodiments of the present application, respectively by first via data to be encoded stream and the second road number to be encoded
It is changed to corresponding multicomponent coding data flow according to the binary data to be encoded circulation in stream, obtains first via coding result and the second tunnel
Coding result, comprising:
Every road data to be encoded stream is carried out serioparallel exchange respectively, obtains K by step S104111Sub-data stream, wherein K1
For the bit number for including in each symbol.
Step S10413, by K1Sub-data stream is weighted respectively, wherein the weighting coefficient of the n-th circuit-switched data is 2n-1, n
Value range be [1, K1]。
Step S10415, weighted results are summed, and obtain the coding result of every road data to be encoded stream.
Optionally, according to the above embodiments of the present application, first via data to be encoded stream is the road I data to be encoded stream, second
Road data to be encoded stream is the road Q data to be encoded stream, and first via coding result and the second tunnel coding result are overlapped, obtained
The initially corresponding multicomponent coding data flow of data to be encoded stream, comprising:
By following formula to the coding result of the coding result of the road I data to be encoded stream and the road Q data to be encoded stream into
Row superposition:
P=PI+j*PQ,
Wherein, P is for characterizing multicomponent coding data flow, PIFor characterizing the coding result of the road I data to be encoded stream, PQWith
In the coding result of the characterization road Q data to be encoded stream.
In the following, and pure overlapping multiplexing coding carried out to binary data to be encoded stream for OvFDM be illustrated, specifically
Including following four steps:
(1) serioparallel exchange
The binary data to be encoded stream of input is subjected to serioparallel exchange, becomes K1Sub-data.
Such as: work as K1When=2, list entries is converted into two-way, the data on every road are expressed as:
(2) it weights
By K1Sub-data is weighted respectively, to the 1st circuit-switched data multiplied by 20, the 2nd circuit-switched data is multiplied by 21, and so on, the
K1Circuit-switched data multiplied by
K1When=2, the two paths of data after weighting is indicated are as follows:
(3) it sums
Subdata after weighting is successively summed, final output result P is obtainedI, length is denoted as Ns。
K1When=2, indicate are as follows:
(4) I, Q data superposition
Above-mentioned (1)~(3) are the processing of I circuit-switched data, and the processing of Q circuit-switched data is identical with the road I.Final I, Q two paths of data superposition
Together, it is expressed as P=PI+j*PQ, the as output of P-OvFDM.
Herein it should be noted that same bit stream, which can be used, for the source bit stream of I, Q two-way is respectively fed to I, Q two
Road is handled, and the processing of I, Q two-way can also be respectively fed to using two groups of different bit streams.If using the former method,
The reliability that data transmission can be improved, can be improved system processes data flow velocity degree using the latter.The method of use can be according to being
Depending on system demand, other improvement can also be carried out again certainly, including add interleaver, precoding etc., it will not repeat them here.
Optionally, according to the above embodiments of the present application, offset overlapping multiplexing coding is carried out to multicomponent coding data flow, is obtained
The coding result of initial data to be encoded stream, comprising:
Step S1061 generates envelope waveform according to preset design parameter in modulation domain, and will be wrapped according to overlapping tuple
Network waveform is shifted in modulation domain by default shift intervals, and multiple displacement envelope waveforms in modulation domain are obtained.
Multicomponent coding data flow is multiplied with corresponding displacement envelope waveform respectively, obtains in modulation domain by step S1063
Multiple modulation envelope waveforms.
Multiple modulation envelope waveforms are overlapped by step S1065 in modulation domain, obtain initial data to be encoded stream
Multiple modulation envelope waveform in coding result namely modulation domain.
In a kind of optional embodiment, by taking OvFDM as an example, to multicomponent coding data flow carry out offset overlapping multiplexing encode into
Row explanation:
(1) the spectrum signal H (f) (i.e. above-mentioned envelope waveform) for sending signal is generated.
(2) the spectrum signal H (f) generated in (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)).
Embodiment 2
According to embodiments of the present invention, a kind of embodiment of overlapping multiplexing code device is provided, Fig. 5 is real according to the present invention
The schematic diagram of the overlapping multiplexing code device of example is applied, as shown in figure 5, the device includes:
Module 50 is obtained, for obtaining initial data to be encoded stream, wherein initial data to be encoded stream is that binary is to be encoded
Data flow.
First coding module 52 is used for by carrying out pure overlapping multiplexing coding to binary data to be encoded stream, by binary
Data to be encoded circulation is changed to multicomponent coding data flow.
Second coding module 54, for carrying out offset overlapping multiplexing coding to multicomponent coding data flow, wherein offset overlapping
Multiplexing and encoding is used to multicomponent coding data flow carrying out displacement overlapping, obtains the coding result of initial data to be encoded stream.
Optionally, according to the above embodiments of the present application, binary data to be encoded stream include: first via data to be encoded stream and
Second road data to be encoded stream, the first coding module include:
Encoding submodule, for respectively waiting for the binary in first via data to be encoded stream and the second road data to be encoded stream
Encoded data stream is corresponding multicomponent coding data flow, obtains first via coding result and the second tunnel coding result.
Superposition submodule obtains initially for first via coding result and the second tunnel coding result to be overlapped wait compile
The corresponding multicomponent coding data flow of code data flow.
Embodiment 3
According to embodiments of the present invention, a kind of embodiment of overlapping multiplexing system is provided, Fig. 6 is according to embodiments of the present invention
Overlapping multiplexing system schematic diagram, as shown in fig. 6, the system includes:
First encoder 60, it is pure by being carried out to binary data to be encoded stream for obtaining initial data to be encoded stream
The circulation of binary data to be encoded is changed to multicomponent coding data flow, wherein initial data to be encoded stream is two by overlapping multiplexing coding
First data to be encoded stream.
Second encoder 62 is connected with the first encoder, is compiled for carrying out offset overlapping multiplexing to multicomponent coding data flow
Code, wherein offset overlapping multiplexing coding obtains initial data to be encoded stream for multicomponent coding data flow to be carried out displacement overlapping
Coding result.
Fig. 7 is according to a kind of schematic diagram of overlapping Frequency Division Multiplexing system of the embodiment of the present application, which is still with OvFDM
Example first treats the pure overlapping multiplexing coding of encoded data stream progress and is as shown in connection with fig. 7 gone here and there the road I data to be encoded stream simultaneously
Conversion (S/P) obtains K1Sub-data, to K1Sub-data is weighted, to the 1st circuit-switched data multiplied by 20, the 2nd circuit-switched data multiplied by
21, and so on, K1Circuit-switched data multiplied byThen the subdata after weighting is successively summed, obtains final output
As a result.As above identical coding is carried out to the road Q data to be encoded stream simultaneously, obtains the road I coding result PIWith the road Q coding result PQ,
The road I coding result and the road Q coding result are passed through into formula P=PI+j*PQIt is added and obtains the output of pure overlapping multiplexing coding.
The output of pure overlapping multiplexing coding is normalized, and by after sampler samples, carrying out offset weight
Folded multiplexing and encoding (i.e. multiplexing waveform preform in Fig. 7), and fourier inverse transformation is carried out, obtain the volume of initial data to be encoded stream
Code result.
Transmitting terminal launches the transmission signal obtained after coded modulation by antenna, and signal is passed by wireless channel
It is defeated, since the signal received is time-domain signal, it is therefore desirable to Fourier transform first is carried out to time-domain signal and is converted to frequency-region signal,
Signal is handled again, the fourier inverse transformation and Fourier transform in OvFDM are directed to the setting of sampling number, the sampling of the two
Points should be consistent, and value is 2n.Simultaneously because transmitting terminal is that I, Q two-way send data, therefore receive process needs pair
Signal carries out I, Q separation, then is sampled respectively to two paths of signals, decodes (i.e. Maximum likelihood sequence detection in Fig. 7), finally
Demodulation output two-way bit stream.There are many interpretation methods after receiving end receives transmission signal, including Maximum likelihood sequence
Detection, iterative decoding etc., the application is defined not to this.
Embodiment 4
According to embodiments of the present invention, a kind of storage medium is provided, which is characterized in that storage medium includes the journey of storage
Sequence, wherein equipment where control storage medium executes the overlapping multiplexing coding staff of any one of embodiment 1 in program operation
Method.
Embodiment 5
According to embodiments of the present invention, a kind of processor is provided, processor is for running program, wherein when program is run
Execute the modulator approach of the overlapping multiplexing signal of any one of embodiment 1.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of overlapping multiplexing coding method characterized by comprising
Obtain initial data to be encoded stream, wherein the initial data to be encoded stream is binary data to be encoded stream；
By carrying out pure overlapping multiplexing coding to the binary data to be encoded stream, binary data to be encoded circulation is changed
For multicomponent coding data flow；
Offset overlapping multiplexing coding is carried out to the multicomponent coding data flow, wherein the offset overlapping multiplexing coding is used for will
The multicomponent coding data flow carries out displacement overlapping, obtains the coding result of the initial data to be encoded stream.
2. the method according to claim 1, wherein the binary data to be encoded stream includes: that the first via waits compiling
Code data flow and the second road data to be encoded stream, by carrying out pure overlapping multiplexing coding to the binary data to be encoded stream,
Binary data to be encoded circulation is changed to multicomponent coding data flow, comprising:
Respectively by the binary data to be encoded stream in the first via data to be encoded stream and the second road data to be encoded stream
Corresponding multicomponent coding data flow is converted to, first via coding result and the second tunnel coding result are obtained；
The first via coding result and second tunnel coding result are overlapped, the initial data to be encoded stream is obtained
Corresponding multicomponent coding data flow.
3. according to the method described in claim 2, it is characterized in that, respectively by the first via data to be encoded stream and described
Binary data to be encoded circulation in two road data to be encoded streams is changed to corresponding multicomponent coding data flow, obtains first via coding
As a result with the second tunnel coding result, comprising:
Every road data to be encoded stream is subjected to serioparallel exchange respectively, obtains K1Sub-data stream, wherein K1To be wrapped in each symbol
The bit number contained；
By the K1Sub-data stream is weighted respectively, wherein the weighting coefficient of the n-th circuit-switched data is 2n-1, the value range of n is
[1, K1]；
Weighted results are summed, the coding result of every road data to be encoded stream is obtained.
4. according to the method described in claim 2, it is characterized in that, the first via data to be encoded stream is the road I number to be encoded
According to stream, the second road data to be encoded stream is the road Q data to be encoded stream, by the first via coding result and second tunnel
Coding result is overlapped, and obtains the corresponding multicomponent coding data flow of the initial data to be encoded stream, comprising:
The coding result of the road I data to be encoded stream and the coding result of the road Q data to be encoded stream are folded by following formula
Add:
P=PI+j*PQ,
Wherein, P is for characterizing the multicomponent coding data flow, PIFor characterizing the coding result of the road the I data to be encoded stream,
PQFor characterizing the coding result of the road the Q data to be encoded stream.
5. method as claimed in any of claims 1 to 4, which is characterized in that flowed into the multicomponent coding data
Line displacement overlapping multiplexing coding, obtains the coding result of the initial data to be encoded stream, comprising:
Envelope waveform is generated in modulation domain according to preset design parameter, and according to overlapping multiplexing number by the envelope waveform
It is shifted in the modulation domain by preset shift intervals, obtains multiple displacement envelope waveforms in the modulation domain；
The multicomponent coding data flow is multiplied with corresponding displacement envelope waveform respectively, obtains multiple tune in the modulation domain
Envelope waveform processed；
The multiple modulation envelope waveform is overlapped in the modulation domain, obtains the volume of the initial data to be encoded stream
Code result.
6. a kind of overlapping multiplexing code device, which is characterized in that including
Module is obtained, for obtaining initial data to be encoded stream, wherein the initial data to be encoded stream is binary number to be encoded
According to stream；
First coding module, for by carrying out pure overlapping multiplexing coding to binary data to be encoded stream, the binary to be waited for
Encoded data stream is multicomponent coding data flow；
Second coding module, for carrying out offset overlapping multiplexing coding to the multicomponent coding data flow, wherein the offset weight
Folded multiplexing and encoding is used to the multicomponent coding data flow carrying out displacement overlapping, obtains the coding of the initial data to be encoded stream
As a result.
7. device according to claim 6, which is characterized in that the binary data to be encoded stream includes: that the first via waits compiling
Code data flow and the second road data to be encoded stream, first coding module include:
Encoding submodule, for respectively by two in the first via data to be encoded stream and the second road data to be encoded stream
First data to be encoded circulation is changed to corresponding multicomponent coding data flow, obtains first via coding result and the second tunnel coding result；
It is superimposed submodule, for the first via coding result and second tunnel coding result to be overlapped, is obtained described
The initially corresponding multicomponent coding data flow of data to be encoded stream.
8. a kind of overlapping multiplexing system characterized by comprising
First encoder, for obtaining initial data to be encoded stream, wherein the initial data to be encoded stream is that binary is to be encoded
Data flow, by carrying out pure overlapping multiplexing coding to the binary data to be encoded stream, by the binary data to be encoded stream
Be converted to multicomponent coding data flow；
Second encoder is connected with first encoder, for carrying out offset overlapping multiplexing to the multicomponent coding data flow
Coding, wherein the offset overlapping multiplexing coding obtains described first for the multicomponent coding data flow to be carried out displacement overlapping
The coding result of beginning data to be encoded stream.
9. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program
When control the storage medium where equipment perform claim require any one of 1 to 5 described in overlapping multiplexing coding method.
10. 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 5 described in overlapping multiplexing coding method.
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