CN107113265A - Effective FBMC transmission and reception for multiple access to communication system - Google Patents
Effective FBMC transmission and reception for multiple access to communication system Download PDFInfo
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- CN107113265A CN107113265A CN201480083555.5A CN201480083555A CN107113265A CN 107113265 A CN107113265 A CN 107113265A CN 201480083555 A CN201480083555 A CN 201480083555A CN 107113265 A CN107113265 A CN 107113265A
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- frequency spectrum
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- useful
- marginal zone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/26534—Pulse-shaped multi-carrier, i.e. not using rectangular window
- H04L27/2654—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
- H04L27/26416—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
Abstract
It is used for the transmission equipment according to pay(useful) load signal generation filter bank multi-carrier FBMC signals there is provided a kind of.The transmission equipment includes at least one filter element, and is adapted to be and generates at least one resource block according to running time-frequency resource lattice corresponding with pay(useful) load signal.Each resource block is the specific frequency spectrum area for particular time-slot, and at least one frequency spectrum marginal zone including a frequency spectrum middle area and positioned at the frequency spectrum edge of resource block.At least one filter element is adapted to be to be filtered by the Part I of the signal to being obtained from pay(useful) load signal, the frequency spectrum middle area of each resource block is generated, so that the modulated Part I of the double-side band for generating FBMC signals.Filtered in addition, the filter element is adapted to be by the Part II of the signal at least to being obtained from pay(useful) load signal, at least one frequency spectrum marginal zone of each resource block is generated, so that the modulated Part II of the single-side belt for generating FBMC signals.
Description
Technical field
The present invention relates to based on filter bank multi-carrier (Filter-Bank Multi-Carrier Modulation,
FBMC) wireless communication system of modulation, for the design based on general frequency domain multiple access-in resource and structure, is related to, but are not limited to
Multi-user's uplink, or precoding downlink transfer, for example, the MIMO transmission based on code book or based on beam forming.
Background technology
Filter with offset orthogonal Modulation and Amplitude Modulation (Offset Quadrature-Amplitude Modulation, OQAM)
Ripple device group multicarrier (Filterbank Multicarrier, FBMC) transmission is the time for Future wireless systems such as 5G
Select one of transmission plan.With current state-of-the-art cyclic prefix OFDM (Cyclic-Prefix Orthogonal
Frequency Division Multiplexing, CP-OFDM) to transmit and compare, the advantage of FBMC/OQAM systems is can be more
Control well, with outer radio power leakage, to realize higher spectrum efficiency.
In the baseband discrete-time model with M subcarrier, the FBMC/OQAM signals of transmitter side can be written as:
Wherein, PT,K[t] is ptototype filter PTThe frequency-shifted version of [t]：
ck,nIt is the complex symbol (OQAM symbols) modulated on m-th of subcarrier of nth symbol, can be expressed as：
Wherein dk,nRepresent real-valued symbol (pulse amplitude modulation, (Pulse Amplitude Modulation, PAM symbols
Number)), additional phase termIt is in order to alternately increase real and imaginary parts in time domain and frequency domain, to construct OQAM symbols.Under
Face is an example：
Therefore, to put it more simply, we can rewrite FBMC/OQAM signals in transmitter side：
Wherein
Therefore, signal after FBMC/OQAM signals can be modulated as PAM.Note, PAM sign moulds are employed below.
It is assumed that ptototype filter is symmetrical, and it is real value, under desirable channel conditions, r in real number fieldk,nAnd rk',n'
Orthogonality condition is met between two symbols,
Wherein Re { } is takes real, and δ represents Dirac delta function.
Because the FBMC ptototype filters used have high minor lobe inhibitory property, thus non-adjacent subcarrier k and k' it
Between interfere and can be ignored.For adjacent sub-carriers, i.e. k=k' ± 1, their own orthogonality only relies upon this
Channel flatness on two subcarriers.If being difficult by prototype however, there is non-flat forms channel between boundary subcarriers
Wave filter, which mitigates, to be interfered with each other.
For example, in the channel precoding downlink transfer such as multi-antenna transmission based on code book or beam forming, or multi-user
Such situation occurs in uplink.Because the channel between two pre-encoded blocks or the boundary subcarriers of user is uneven,
So strong interfere can be produced between the two subcarriers.
For such case, possible scheme is：
Subcarrier is kept out of the way：Code block/user makes at least one boundary subcarriers be in the free time.This method can apply to interference
It is difficult to pre-canceled system, such as multi-user's uplink.Although the design complexities of transceiver are relatively low, but if having big
Block/user of amount, the program can cause system spectral efficiency loss high.The program will be further described during description Fig. 3.
Interference based on precoder is pre-canceled：In this scenario, based on the advance understanding to channel, transmitter deployment is pre-
Encoder is pre-canceled to interfering progress.This can apply at emitter the system that there is channel condition information (CSI), example
Such as, channel precoding downlink transfer.Two major defects of the program are that implementation complexity is high, sensitive to CSI, i.e. precoding
The performance of device is highly dependent on channel information (channel knowledge) accuracy.Therefore, poor performance in practice.
The program will be further described during description Fig. 4.
The modulated boundary strip of quadrature amplitude modulation (QMB)：In this scenario, in order to avoid inter-block-interference (IBI), border is carried
Ripple is QAM modulation, and adds cyclic prefix (CP), and unconventional PAM (or OQAM) is modulated.Pass through new transceiver side
Case alleviates the fast interior interference and intersymbol interference of generation.The advantage of the program is small loss of spectral efficiency, and in hair
Penetrating CSI at machine has robustness.It is limited in, because interference is cancelled, the complexity increase of transceiver design.Meeting during Fig. 5 is described
Further describe the program.
As it was previously stated, in the scheme proposed, being existed between the boundary subcarriers for belonging to two different user blocks strong mutually
Interference.This has become the open problem for being directed to FBMC for a long time.So far, it is this mutually dry in order to cancel or mitigate
Disturb, done substantial amounts of effort, for example, using the simple scheme kept out of the way with least one subcarrier, using precoding IBI
Cancel, or the modulated boundary strips of CP-QAM (QMB).But, not a kind of gratifying scheme can be without spectrum efficiency
Effectively cancel this interference in the case that loss and transceiver design complexity are low.
The content of the invention
Equipment, receiving device, sending method and method of reseptance are sent it is an object of the invention to provide one kind, receipts can be reduced
The design complexities of device are sent out, while realizing spectral efficient.
Pass through the feature, the feature of the receiving device of claim 7, claim 13 of the transmission equipment of claim 1
The feature of sending method and the feature of the method for reseptance of claim 14 realize the purpose.Further, claim is passed through
The feature of 15 associated computer program realizes the purpose.Further description is included in dependent claims.
In order to avoid belonging to the interference between the boundary subcarriers of different user block completely, the present invention, which proposes one kind, to be used for
FBMC/OQAM new modulation design and new block/frame structure design.It does not have loss of spectral efficiency, and corresponding transceiver
Relatively low complexity can be realized.FBMC systems are assumed below and use PHYDYAS ptototype filters.Even so, own
The scheme and algorithm of design can be easily adapted to other ptototype filters.In addition, multi-antenna channel has been illustrated below
Precoding downlink transmission system.However, all designs and algorithm can be easily adapted to do between other have block
Disturb the system with multi-user interference.
It is used in the first aspect of the present invention there is provided one kind according to pay(useful) load signal generation filter bank multi-carrier
The transmission equipment of FBMC signals.It is described transmission equipment include at least one filter element, and be adapted to be according to it is described effectively
The corresponding running time-frequency resource lattice of load signal generate at least one resource block.Each resource block is the specific frequency spectrum for particular time-slot
Area, and at least one frequency spectrum marginal zone including a frequency spectrum middle area and positioned at the frequency spectrum edge of the resource block.Institute
State at least one filter element and be adapted to be and carried out by the Part I of the signal to being obtained from the pay(useful) load signal
Filter, generates the frequency spectrum middle area of each resource block, so as to generate the modulated Part I of double-side band of the FBMC signals.This
Outside, the filter element is adapted to be is entered by the Part II of the signal at least to being obtained from the pay(useful) load signal
Row filtering, generates at least one described frequency spectrum marginal zone of each resource block, so as to generate the single-side belt of the FBMC signals
Adjust Part II.It is possible to avoiding inter-block-interference, spectral efficient is realized.
According to first aspect in the first implementation, the modulated Part II bag of the single-side belt of the FBMC signals
Include with the baseband signal of bottom rise the cut-off of initial line corresponding frequency spectrum while and during non-cut-off.At least one described filter element is fitted
With to generate at least one pay(useful) load area described in the frequency spectrum marginal zone, so that the Part II of the FBMC signals
The non-cut-off side on the frequency spectrum middle area of the frequency spectrum marginal zone, make the institute of the Part II of the FBMC signals
Cut-off side is stated on the non-frequency spectrum middle area on frequency spectrum marginal zone one side, so as to extremely advantageous reduce inter-block-interference.
According to first aspect or the first implementation in second of implementation, the frequency spectrum middle area it is described
The single-side belt of the modulated Part I of the double-side band of FBMC signals and the FBMC signals of the frequency spectrum marginal zone is
Part II is adjusted to be partly overlapped on frequency spectrum.The modulated Part II of the single-side belt of the FBMC signals there is no or almost no
Component of signal beyond the frequency spectrum edge of the frequency spectrum marginal zone relative with the frequency spectrum middle area, so as to further drop
Low inter-block-interference.
According to first aspect first or second of implementation in the third implementation, each frequency spectrum marginal zone bag
At least one pay(useful) load section of the Part II of the FBMC signals is included, and/or including at least one zero padding or without letter
Number at least one zero padding section.If at least one pay(useful) load section and at least one zero padding section are all included in frequency spectrum marginal zone
Interior, then at least one pay(useful) load section and at least one described zero padding section have the identical duration, and in the time
Upper continuous arrangement.By alternately, realizing the effective of frequency spectrum between the pay(useful) load section and zero padding section in the frequency spectrum marginal zone
Utilize, because zero padding section area can be used for adjacent resource blocks.
According to the third implementation in the 4th kind of implementation, each frequency spectrum marginal zone includes at least two pay(useful) loads
Section and/or at least two zero paddings section.If at least two pay(useful) loads section and at least two zero paddings section are all included in frequency spectrum side
In edge area, then at least two pay(useful) load section and at least two zero padding section in the frequency spectrum marginal zone in time
It is alternately arranged, so as to realize effective utilization of frequency spectrum.
According to first aspect or foregoing each implementation in the 5th kind of implementation, it is single that the transmission equipment includes coding
Member, is adapted for carrying out symbol mapping to the pay(useful) load signal, obtains symbol and map effective load signal, and/or resource is reflected
Unit is penetrated, the signal for being adapted for mapping effective load signal to the symbol or obtaining from the pay(useful) load signal carries out resource
Mapping, obtains resource impact pay(useful) load signal, and/or modulating unit, is adapted for modulating the resource impact pay(useful) load letter
Number or the signal that is obtained from the pay(useful) load signal, obtain modulated pay(useful) load signal, and/or layer map unit, be adapted for
The signal obtained to the modulated pay(useful) load signal or from the pay(useful) load signal carries out MIMO layer mapping, obtains layer mapping
Pay(useful) load signal, so as to which the pay(useful) load signal is effectively processed as into the FBMC signals.
Include the filter bank multi-carrier of at least one resource block there is provided a kind of basis that is used in the second aspect of the present invention
FBMC signals receive pay(useful) load signal and the receiving device including at least one filter element.The resource block is for specific
The specific frequency spectrum area of time slot.Each resource block includes the frequency spectrum of a modulated Part I of double-side band for including the FBMC signals
Middle area, and the modulated Part II of single-side belt including the FBMC signals the frequency spectrum edge positioned at each resource block
At least one frequency spectrum marginal zone.At least one described filter element is adapted to be modulated to the double-side band of the FBMC signals
Part I is filtered, so as to generate the Part I of the signal obtained from the FBMC signals.At least one described filtering
Unit is further adapted to filter the modulated Part II of the single-side belt of the FBMC signals, so as to generate from described
The Part II for the signal that FBMC signals are obtained, so as to receive the FBMC signals effectively sent.
According to second aspect in the first implementation, the double-side band of the FBMC signals of the frequency spectrum middle area
The modulated Part II of the single-side belt of modulated Part I and the FBMC signals of the frequency spectrum marginal zone is on frequency spectrum top
Divide overlapping.The modulated Part II of the single-side belt of the FBMC signals there is no or almost no beyond with the frequency spectrum middle area
The component of signal at the frequency spectrum edge of the relative frequency spectrum marginal zone, so as to realize effective utilization of frequency spectrum.
According to second aspect or the first implementation in second of implementation, each frequency spectrum marginal zone includes described
At least one pay(useful) load section of the Part II of FBMC signals, and/or including at least one zero padding or no signal extremely
Few zero padding section.If at least one pay(useful) load section and at least one zero padding section are all included in frequency spectrum marginal zone,
At least one pay(useful) load section and at least one described zero padding section have the identical duration, and continuous in time
Arrangement, so as to realize that the effective spectrum of frequency spectrum marginal zone is utilized, because zero padding section area can make for adjacent resource blocks
With.
According to second of implementation in the third implementation, frequency spectrum marginal zone includes at least two pay(useful) loads section
And/or at least two zero padding section.If at least two pay(useful) loads section and at least two zero paddings section are all included in frequency spectrum edge
In area, then at least two pay(useful) loads section and at least two zero padding section are submitted in the frequency spectrum marginal zone in the time
For arrangement, so as to realize effective utilization of frequency spectrum.
According to first, second or third kind of implementation of second aspect or second aspect in the 4th kind of implementation, institute
Receiving device is stated including layer de-mapping unit, be adapted for the Part I of signal to being obtained from the FBMC signals and from
The Part II for the signal that the FBMC signals are obtained carries out MIMO layer demapping, obtains first of layer demapping signal
Point and the layer demapping signal Part II, and/or demodulating unit is adapted for described the to the layer demapping signal
The Part II of a part of, described layer demapping signal and/or the signal obtained from the FBMC signals are demodulated, and are obtained
To the Part I and the Part II of the demodulated signal of demodulated signal, and/or balanced device, it is adapted for having solved to described
Adjust the Part I of signal or the signal that obtains from the FBMC signals carries out that double-side band is balanced, obtain equalizing signal
Part I, and/or the Part II to the demodulated signal or the signal that is obtained from the FBMC signals carry out it is single
Sideband equalization, obtains the Part II of the equalizing signal, and/or resource de-mapping unit, is adapted for described balanced
Signal or the signal obtained from the FBMC signals carry out resource demapping, obtain resource demapping signal, and/or decoding list
Member, the signal for being adapted for obtaining to the resource demapping signal or from the FBMC signals carries out symbol de-maps, obtains institute
Pay(useful) load signal is stated, so as to which the FBMC signals are effectively processed as into the pay(useful) load signal.
Include according to the first aspect of the invention or any implementation there is provided one kind in the third aspect of the present invention
First send equipment, equipment sent according to the second of first aspect or any implementation and according to second aspect or is appointed
A kind of communication system of the receiving device of implementation.The first transmission equipment, which is adapted to be transmission, includes first resource block
First pay(useful) load signal, the first resource block includes the first frequency spectrum marginal zone.The second transmission equipment is adapted to be hair
The second pay(useful) load signal including Secondary resource block is sent, the Secondary resource block includes the second frequency spectrum marginal zone.Described first
Send equipment and the second transmission equipment is adapted to be while sending the first resource block and described second that frequency spectrum closes on
Resource block, and the frequency spectrum marginal zone of the first resource block and the Secondary resource block is sent on the same frequency, its
In, at least one pay(useful) load section of the first frequency spectrum marginal zone and at least one zero padding section of the second frequency spectrum marginal zone
It is overlapping, and the second frequency spectrum marginal zone at least one pay(useful) load section with the first frequency spectrum marginal zone at least one
Zero padding section is overlapping.The receiving device is adapted to be the reception first resource block and the Secondary resource block, and thus again
The first pay(useful) load signal and the second pay(useful) load signal are generated, so as to effectively send and receive resource
Block.
It is used in the fourth aspect of the present invention there is provided one kind according to pay(useful) load signal generation filter bank multi-carrier
The method of FBMC signals.Methods described is included according to running time-frequency resource lattice corresponding with pay(useful) load signal generation at least one
Individual resource block, wherein, each resource block is the specific frequency spectrum area for particular time-slot, and including a frequency spectrum middle area and position
At least one frequency spectrum marginal zone in the frequency spectrum edge of the resource block, to the signal that is obtained from the pay(useful) load signal
Part I is filtered, to generate the modulated Part I of double-side band of the FBMC signals, so as to generate each resource block
The frequency spectrum middle area, and the Part II of the signal to being obtained from the pay(useful) load signal filters, with
Just the modulated Part II of single-side belt of the FBMC signals is generated, so as to generate at least one described frequency spectrum side of each resource block
Edge area, so as to realize effective utilization of frequency spectrum.
According to fourth aspect in the first implementation, the modulated Part II of the single-side belt of the FBMC signals includes
With the baseband signal of bottom rise the cut-off of initial line corresponding frequency spectrum while and during non-cut-off.By filtering, the frequency spectrum edge is generated
At least one pay(useful) load area in area, so that the non-cut-off side of the Part II of the FBMC signals is described
On the frequency spectrum middle area of frequency spectrum marginal zone, make the cut-off of the Part II of the FBMC signals while in the frequency spectrum
On the non-frequency spectrum middle area on edge area one side, so as to extremely advantageous reduce inter-block-interference.
According to the first implementation of fourth aspect or fourth aspect in second of implementation, the frequency spectrum middle area
The FBMC signals the modulated Part I of the double-side band and the frequency spectrum marginal zone the FBMC signals the list
The modulated Part II of sideband partly overlaps on frequency spectrum.The modulated Part II of the single-side belt of the FBMC signals is no or several
Without departing from the component of signal at the frequency spectrum edge of the frequency spectrum marginal zone relative with the frequency spectrum middle area, so as to enter
One step reduces inter-block-interference.
According to first or second of implementation of fourth aspect or fourth aspect in the third implementation, each frequency spectrum
Marginal zone includes at least one pay(useful) load section of the Part II of the FBMC signals, and/or including at least one benefit
Zero or no signal at least one zero padding section.If at least two pay(useful) loads section and at least two zero paddings section are all included in frequency
In boundary of spectrum area, then at least one pay(useful) load section and at least one described zero padding section have the identical duration, and
And continuous arrangement in time.By alternately, realizing frequency between the pay(useful) load section and zero padding section in the frequency spectrum marginal zone
Effective utilization of spectrum, because zero padding section area can be used for adjacent resource blocks.
According to the third implementation of fourth aspect in the 4th kind of implementation, each frequency spectrum marginal zone includes at least two
Individual pay(useful) load section and/or at least two zero paddings section.If at least two pay(useful) loads section and at least two zero paddings section are all wrapped
Include in frequency spectrum marginal zone, then at least two pay(useful) loads section and at least two zero padding section are in the frequency spectrum marginal zone
It is alternately arranged on the inherent time, so as to realize effective utilization of frequency spectrum.
According to foregoing each implementation of fourth aspect or fourth aspect in the 5th kind of implementation, methods described includes pair
The pay(useful) load signal carries out symbol mapping, obtains symbol and maps effective load signal, and/or maps effective to the symbol
Load signal or the signal obtained from the pay(useful) load signal carry out resource impact, obtain resource impact pay(useful) load signal,
And/or the modulation resource impact pay(useful) load signal or the signal obtained from the pay(useful) load signal, obtain modulated effective
Load signal, and/or the signal obtained to the modulated pay(useful) load signal or from the pay(useful) load signal carry out MIMO layer
Mapping, obtains layer and maps effective load signal, believes so as to which the pay(useful) load signal is effectively processed as into the FBMC
Number.
Include the filter bank multi-carrier of at least one resource block there is provided a kind of basis that is used in the fifth aspect of the present invention
The method that FBMC signals receive pay(useful) load signal.The resource block is the specific frequency spectrum area for particular time-slot.Each resource
Block includes the frequency spectrum middle area of a modulated Part I of double-side band for including the FBMC signals, and including the FBMC
At least one frequency spectrum marginal zone of the frequency spectrum edge positioned at each resource block of the modulated Part II of single-side belt of signal.It is described
Method includes filtering the modulated part of the double-side band of the FBMC signals, is obtained so as to generate from the FBMC signals
The Part I of the signal arrived, is filtered to the modulated part of the single-side belt of the FBMC signals, so as to generate from described
The Part II for the signal that FBMC signals are obtained, and regenerate the institute of the signal obtained from the FBMC signals
Pay(useful) load signal is stated, so as to realize the reception on frequency spectrum to efficient coding signal.
According to the 5th aspect in the first implementation, the double-side band of the FBMC signals of the frequency spectrum middle area
The modulated Part II of the single-side belt of modulated Part I and the FBMC signals of the frequency spectrum marginal zone is on frequency spectrum top
Divide overlapping.The modulated Part II of the single-side belt of the FBMC signals there is no or almost no beyond with the frequency spectrum middle area
The component of signal at the frequency spectrum edge of the relative frequency spectrum marginal zone, so as to realize effective utilization of frequency spectrum.
According to the first implementation of the 5th aspect or the 5th aspect in second of implementation, each frequency spectrum marginal zone
At least one pay(useful) load section of the Part II including the FBMC signals, and/or including at least one zero padding or nothing
At least one zero padding section of signal.If at least two pay(useful) loads section and at least two zero paddings section are all included in frequency spectrum edge
In area, then described at least one pay(useful) load section and at least one described zero padding section have an identical duration, and when
Between upper continuous arrangement, so as to realize that the effective spectrum of frequency spectrum marginal zone is utilized, because zero padding section area can be for neighbouring
Resource block is used.
According to second of implementation of the 5th aspect in the third implementation, frequency spectrum marginal zone, which includes at least two, to be had
Imitate load patch and/or at least two zero paddings section.If at least two pay(useful) loads section and at least two zero paddings section are all included in
In frequency spectrum marginal zone, then at least two pay(useful) load section and at least two zero padding section in the frequency spectrum marginal zone
It is alternately arranged on time, so as to realize effective utilization of frequency spectrum.
According to first, second or third kind of implementation of the 5th aspect or the 5th aspect in the 4th kind of implementation, institute
Stating method of reseptance includes the Part I of signal to being obtained from the FBMC signals and is obtained from the FBMC signals
The Part II of the signal carries out MIMO layer demapping, obtains layer Part I of demapping signal and layer demapping letter
Number Part II, and/or the Part I to the layer demapping signal, described the second of the layer demapping signal
Part and/or the signal that is obtained from the FBMC signals are demodulated, and are obtained the Part I of demodulated signal and described have been solved
Adjust the Part II of signal, and/or the Part I to the demodulated signal or the letter that is obtained from the FBMC signals
Number carry out double-side band balanced, obtain the Part I of equalizing signal, and/or to the Part II of the demodulated signal
Or the signal obtained from the FBMC signals carries out balanced, obtain the Part II of the equalizing signal, and/or to it is described
Equalizing signal or the signal obtained from the FBMC signals carry out resource demapping, obtain resource demapping signal, and/or to institute
The signal stated resource demapping signal or obtained from the FBMC signals carries out symbol de-maps, obtains the pay(useful) load letter
Number, so as to which the FBMC signals are effectively processed as into the pay(useful) load signal.
In the sixth aspect of the present invention there is provided a kind of computer program with program code, when described program is in meter
When being performed on calculation machine or digital signal processor, all steps for performing the 4th or the 5th aspect according to the present invention.
It should be noted that generally all structures described in this application, equipment, element, unit and device etc. can pass through software
Or hardware element or any combination of the two are realized.In addition, equipment can be processor or can include processor, wherein,
The function of these elements described in this application, unit and device can be realized in one or more processors.In the application
All steps and the function of being performed by each entity of description that the various entities of description are performed are intended to each entity of explanation and fitted
With for or be configured as performing corresponding step and function.In following description or specific embodiment, although general entity is held
Capable concrete function or step is not reflected in the description of the specific detailed elements for the entity for performing specific steps or function, but
It is that those skilled in the art should understand that these methods and function can be by software or hardware element or any combination of the two be Lai real
It is existing.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiments of the invention, the present invention will be described in detail, wherein
Fig. 1 shows the first embodiment of the transmission equipment according to first aspect；
Fig. 2 shows the first embodiment of the receiving device according to second aspect；
Fig. 3 shows first exemplary transmission equipment；
Fig. 4 shows second exemplary transmission equipment；
Fig. 5 shows the 3rd exemplary transmission equipment；
Fig. 6 shows the second embodiment of the transmission equipment according to first aspect；
Fig. 7 shows the second embodiment of the receiving device according to second aspect；
Fig. 8 shows the 3rd embodiment of the transmission equipment according to first aspect；
Fig. 9 shows the 3rd embodiment of the receiving device according to the third aspect；
Figure 10 shows two resource blocks of the embodiment for the first, second, third, fourth, the 5th and the 6th aspect；
Figure 11 shows the figure of the frequency spectrum for exemplary transmission system；
Figure 12 shows the figure of the frequency spectrum of the embodiment for the first, second, third, fourth, the 5th and the 6th aspect；
Figure 13 shows the details of the fourth embodiment of first aspect；
Figure 14 shows the figure of description impulse response；
Figure 15 shows the details of the fourth embodiment of second aspect；
Figure 16 shows the details of the 5th embodiment of second aspect；
Figure 17 shows the details of the 5th embodiment of second aspect；
Figure 18 shows the embodiment of the first, second, third, fourth, the 5th and the 6th aspect relative to alternative solution
Spectrum efficiency；
Figure 19 shows the embodiment of the first, second, third, fourth, the 5th and the 6th aspect relative to alternative solution
Spectrum efficiency；
Figure 20 shows the embodiment of the first, second, third, fourth, the 5th and the 6th aspect relative to alternative solution
Spectrum efficiency；
Figure 21 shows the sixth embodiment of first aspect；
Figure 22 shows the 7th embodiment of first aspect；
Figure 23 shows the flow chart of the embodiment of fourth aspect；And
Figure 24 shows the flow chart of the embodiment of the 5th aspect.
Embodiment
The method for being described to handle inter-block-interference in the prior art according to Fig. 3 to Fig. 5 first.Utilize Fig. 1 to Fig. 2 and Fig. 6
The transmission equipment of the present invention and some embodiments of receiving device are shown to Fig. 9.According to Figure 10 to Figure 20, some implementations are described
The details of example.Achievable performance is shown using Figure 19 to Figure 20.Using Figure 21 to Figure 22, optional embodiment is described.
Finally, the sending method of invention and the embodiment of method of reseptance are shown according to Figure 23 and Figure 24.Partly eliminate difference
Identical entity and reference in figure.
As shown in figure 3, for the channel precoding downlink transfer with two different user devices 34,35, it is difficult in real time
Get accurately channel information to adapt to precoder.Only possible scheme is by making at least one boundary subcarriers
Sc0 is sky, also referred to as " subcarrier is kept out of the way ", it is to avoid interfered with each other between user's block 30 and 31.The user's block set up is passed respectively
Two different beam forming units 32,33 are passed, and are sent by channel h1, h2.Because can not possibly shift to an earlier date or obtain in real time
The channel information of other users or the channel information that other users are known using precoder, thus the program be also applied for it is up
Multi-user transmission.
As shown in figure 4, when down channel precoding, a scheme is to use to be used to cancel two continuous users
The precoder 44 of interference between block 40,41.Precoder structure is dependent between two downlink user channels h1 and h2
Real-time Channel information.Before precoding is carried out, each signal is respectively through Beam-former 42,43.In this scenario, due in hair
The prior information for penetrating channel h1 and h2 at machine is inaccurate, it is impossible to effectively remove interference.Therefore, the performance of this programme is very
Difference.
As shown in figure 5, for down channel precoding transmissions, a scheme uses the QAM modulation with cyclic prefix, should
Cyclic prefix is dedicated only to the boundary subcarriers of user's block 50,51 easily by inter-block-interference.One of result using CQMB is meeting
Other subcarriers in same block are produced with interference, is also known as disturbed in block.Therefore, at emitter using precoder 52,
53 with the interference between the adjacent OQAM modulated subcarriers of pre-canceled CQMB.Signal is passing through after precoder 52,53
Channel h1, h2 are sent to two different user equipmenies 56,57 respectively by beam-shaper 54,55.
It may be noted that compared with scheme set forth above, precoder 52,53 is only related to ptototype filter, not by channel
The limitation of information.Therefore, for inaccurate channel information, CQMB schemes are sane.In addition, QAM in CQMB tone character
Number it may interfere with each other, because FBMC has orthogonality only in real number field.But, eliminated by performing CP at receiver
It is easy to eliminate this interference with frequency domain equalization (FDE).Compared with subcarrier back-off scheme, according to the selection of CP length, CQMB
With small loss of spectral efficiency.Compared with the pre-canceled scheme of the interference based on precoding, for the not smart of transmitter side
True ground channel information, CQMB schemes are sane.CQMB schemes are limited in, because interference is cancelled, and transceiver design is answered
Miscellaneous degree increase.
Fig. 1 shows the first embodiment of the transmission equipment 3 according to first embodiment.Sending equipment 3 includes filter element
5.Effective load signal 1 is provided to equipment 3 is sent.Send equipment and be adapted to be basis and the corresponding time-frequency of pay(useful) load signal 1
Resource grid generates at least one resource block.Each resource block is the specific frequency spectrum area for particular time-slot, and including a frequency
Compose middle area and at least one frequency spectrum marginal zone positioned at the frequency spectrum edge of the resource block.Can be specifically during description Figure 10
Ground describes the structure of resource block.At least one filter element 5 is adapted to be by the signal to being obtained from pay(useful) load signal 1
Part I filtered, the middle area of each resource block is generated, so that modulated first of the double-side band for generating FBMC signals 2
Point.At least one filter element 5 is adapted to be to enter by the Part II of the signal at least to obtaining from pay(useful) load signal 1
Row filtering, generates at least one frequency spectrum marginal zone of each resource block, so that the single-side belt for generating FBMC signals 2 modulated second
Part.
There is provided the embodiment of the receiving device according to second aspect in fig. 2.Receiving device 4 includes filter element 6.
Receiving device 4, which is adapted to be reception, includes the FBMC signals 2 of at least one resource block, and thus regenerates pay(useful) load signal
1.Resource block is the specific frequency spectrum area for particular time-slot, and includes the double-side band modulated first of the FBMC signals including one
Partial frequency spectrum middle area, and the modulated part of single-side belt including FBMC signals 2 the frequency spectrum edge positioned at resource block
At least one frequency spectrum marginal zone.Filter element 6 is adapted to be to be carried out to the modulated Part I of double-side band of the FBMC signals 2
Filter, so as to generate the Part I of the signal obtained from FBMC signals 2.Filter element 6 is further adapted to FBMC signals 2
The modulated Part II of single-side belt is filtered, so as to generate the Part II of the signal obtained from FBMC signals 2.
Communication system is collectively constituted according to Fig. 1 transmission equipment 3 and according to Fig. 2 receiving device 4.In this case, send out
The signal for sending equipment 3 to send is the signal that receiving device 4 is received.Pay(useful) load signal 1 that receiving device 4 is regenerated with
Once the pay(useful) load signal 1 as the input signal for sending equipment 3 is corresponding.
The theoretical thought of proposed invention behind can be construed to：
- in order to avoid inter-block-interference, without all subcarriers being applied to double-side band ptototype filter in FBMC, we
Devise it is a kind of only for easily by above-mentioned inter-block-interference boundary subcarriers new single-side belt (Single Sideband, SSB)
Modulated sending method.This kind of modulated boundary subcarriers of SSB are also referred to as SSB-MB.
- in order to compatible with traditional ptototype filter, it is proposed that a kind of new resource impact specifically designed for boundary subcarriers
Method.With reference to the modulated filters of SSB, both there is no inter-block-interference between boundary subcarriers and adjacent sub-carriers in same, do not have yet
There is interference in block.Therefore, reduced compared with the scheme proposed previously, at emitter without using precoder inter-block-interference and
Disturbed in block.
- in fact, SSB tunable filter is embodied as finite length.Due to this truncation effect, so not fully meeting
Nyquist (Nyquist) criterion, i.e. may make to produce remnants between the symbol in boundary subcarriers using SSB-MB schemes
Intersymbol interference.But, the frequency domain equalization at receiver can be easy to eliminate this interference.
In general, the SSB-MB proposed is that can be used alone in transmitter side, it can also be used alone in receiver
Side, can be applied in the both sides of communication system.
Fig. 6 shows the further embodiment of transmission equipment 3 according to the first aspect of the invention.Sending equipment 3 includes
Coding unit 60, the coding unit 60 is connected to resource mapping unit 61, and resource mapping unit 61 is connected to modulating unit 62
With layer map unit 63.Layer map unit 63 is connected to the filtering list including the first filter element 65 and the second filter element 64
Member 5.
Pay(useful) load signal 1 is supplied to coding unit 60, coding unit 60 is adapted to be to be carried out to pay(useful) load signal
Symbol maps, and obtains symbol and maps effective load signal 1a.Forward error correction (Forward can also be carried out herein
ErrorCorrection, FEC).In this example embodiment, PAM modulated symbols are transmitted for FBMC.
Then symbol is mapped into effective load signal 1a and is supplied to resource mapping unit 61, resource mapping unit 61 is adapted
Resource impact is carried out to map effective load signal to symbol, resource impact pay(useful) load signal 1b is obtained.Specifically, it is effectively negative
Symbol is carried to be mapped to together with reference symbol on the running time-frequency resource lattice of each transmission block.Resource impact can be in the description as described in Figure 10
Place is described in detail.
Then resource impact pay(useful) load signal 1b is supplied to modulating unit 62, modulating unit 62 is adapted to be to resource
Map effective load signal 1b to be modulated, obtain modulated pay(useful) load signal 1c.Specifically, PAM modulated symbols are adjusted
System, only to make purely real symbol or pure imaginary number symbol direct neighbor, so as to keep real number field orthogonality condition.Conventional son is carried
PAM modulated symbols in ripple are expressed as sc1...scN, and wherein N is the quantity of the subcarrier in each piece, PAM modulated symbols by
The modulating unit 62 is handled according to traditional FBMC OQAM premodulateds algorithm identical mode, and table in boundary subcarriers
The SSB-MB symbols for being shown as sc0 can be through the cell processing, can also be without the cell processing.
Obtained modulated pay(useful) load signal 1c is passed into layer map unit 63 again.If the SSB- in boundary subcarriers
The non-modulated unit 62 of MB symbols is handled, then resource impact pay(useful) load signal 1b each several part is also delivered to layer mapping list
Member 63.Layer map unit 63 is adapted to be carries out MIMO layer mapping to these signals 1b, 1c, obtains layer mapping pay(useful) load letter
Number 1d.It is important to note that the layer map unit 63 is optional.
Finally, obtained signal 1d is passed into filter element 5.The signal corresponding with conventional sub-carrier sc1...scN
Part I be delivered to the first filter element 65, and the signal corresponding with the SSB-MB symbols in boundary subcarriers sc0
Part II be delivered to the second filter element 64.Specifically, the second filter element 64 is expressed as sc0 side by application
Orthogonal filter at boundary's subcarrier carries out specially treated, to cancel inter-block-interference.The design also assures that border in same
There is no interference in block between subcarrier and adjacent sub-carriers.Details about SSB modulating units can be on Figure 11 to figure
Illustrated at 14 description.On the other hand, the first filter element 65 is further modulated to conventional sub-carrier sc1...scN
And filtering, obtained signal is FBMC signals 2.
Fig. 7 describes the embodiment of the receiving device 3 according to second aspect.Receiving device 3 includes single comprising the first filtering
The filter element 6 of the filter element 70 of member 71 and second.Filter element 6 is connected to optional layer de-mapping unit, this layer of demapping
Unit is connected to demodulating unit 72.In this example embodiment, it is not provided with a layer de-mapping unit.Herein, the first filter element 71 is straight
Demodulating unit 72 is connected in succession, and demodulating unit 72 is connected to balanced device 73, and the second filter element 70 bypasses demodulating unit 72,
It is directly connected to balanced device 73.In this example embodiment, balanced device 73 includes the first balanced device 75 and the second balanced device 74.In addition,
Weighing apparatus 73 is directly connected to resource de-mapping unit 76, and resource de-mapping unit 76 is connected to demodulating unit 77.
The FBMC signals 2 received are supplied to filter element 6.What is received is corresponding with conventional sub-carrier sc1...scN
The Part I of FBMC signals is filtered through the first filter element 71, obtains the Part I from the obtained signals of FBMC signals 2a.
Specifically, FBMC signals are demodulated and matched filtering herein, and passed the signal along in the frequency domain of each subcarrier.
The Part II of FBMC signals 2 is filtered through the second filter element 70, is obtained from the obtained signals of FBMC signals 2a
Part II.Herein, matched filtering is carried out to the signal at boundary subcarriers sc0.The design reduction of second filter element 70
Disturbed in block in same between boundary subcarriers and adjacent sub-carriers.Details about the filtering can be to Figure 15
Illustrated into Figure 17 description.
The obtained signal from FBMC signals 2a is delivered to optional layer de-mapping unit, and a layer solution is not provided with herein and is reflected
Penetrate unit.If there is provided layer de-mapping unit, it believes to the Part I of signal that is obtained from FBMC signals and from FBMC
The Part II of number obtained signal carries out MIMO layer demapping, obtains layer Part I of demapping signal and this layer of demapping
The Part II of signal.
The signal 2a that the signal or filter element 6 obtained for layer de-mapping unit is obtained, if without layer demapping list
Member, specifically, the part of signal corresponding with conventional sub-carrier sc1...scN are delivered to demodulating unit 72, demodulating unit 72
It is demodulated, obtains demodulated signal 2b Part I.Alternatively, it may be otherwise pair corresponding with conventional sub-carrier sc0
The Part II of signal is demodulated.In this case, demodulated signal 2b Part II is also generated.In the demodulating unit 72
In, specifically, modulating part is corresponding with OQAM premodulateds part after OQAM, is configured in conventional sub-carrier sc1...scN
Symbol switch back to purely real PAM symbols from purely real or pure imaginary number, and be set to imaginary number interference sections.
Obtained demodulated signal 2b, or demodulated signal 2b and the signal 2a that is obtained by the second filter element 70 are delivered to
Balanced device 73.The signal that first balanced device 75 is obtained to demodulated signal 2b Part I or from FBMC signals 2a carries out bilateral
Band is balanced, obtains the Part I of equalizing signal 2c.Specifically, conventional sub-carrier sc1...scN modulated to PAM enters here
Row is balanced.The signal that second balanced device 74 is obtained to demodulated signal 2b Part II or from FBMC signals 2a carries out single-side belt
Equilibrium, obtains the Part II of equalizing signal 2c.Specifically, only SSB-MB symbols are carried out herein balanced.The relevant equilibrium
Details illustrated in the description to Figure 15 to Figure 17.
The obtained 2c of equalizing signal is transferred to resource de-mapping unit 76, the resource de-mapping unit 76 is adapted to be
Resource demapping is carried out to equalizing signal 2c, resource demapping signal 2d is obtained.Specifically, here to returning to transmission block
Running time-frequency resource lattice in symbol carry out demapping.This is the operation opposite with the resource mapping unit 61 in Fig. 6.
Finally, resource demapping signal 2d is transferred to decoding unit 77, the decoding unit 77 is adapted to be to resource solution
Mapping signal carries out symbol de-maps, obtains pay(useful) load signal 1.Specifically, fec decoder and symbol are carried out here to bit
Mapping.The process is corresponding with the mapping of FEC codings and bit to symbol that the coding unit 60 in Fig. 6 is performed.
Fig. 8 and Fig. 9 show the design of replaceable transceiver.Ptototype filter for SSB-MB is with being used for tradition
Traditional ptototype filter of FBMC systems is closely related, using the characteristic, and SSB- can be realized by reusing most of functional block
MB。
Fig. 8 shows the alternative embodiment of the transmission equipment according to first aspect.Primary clustering and the phase described in Fig. 6
Together, unlike, filter element 5 includes the first filter element 84 and the second filter element 85 herein.Whole layer mapping signal 1d
The first filter element 84 is passed to, is filtered by filter element 84.Then 85 pairs of the second filter element is from the first filtering
Normal double-side band (DSB) the modulated signal 1c of unit 84 is changed, and is converted to the SSB modulated signals at boundary subcarriers sc0
1c.In this embodiment, whole resource impact signal 1b is also passed to modulating unit 82, by 82 pairs of whole moneys of modulating unit
Source 1b carries out same modulation.
Fig. 9 shows the alternative embodiment of the receiving device according to second aspect.Primary clustering and the phase described in Fig. 8
Together, unlike, filter element 6 includes the first filter element 91 and the second filter element 90 herein.Second 90 pairs of filter element
The Part I of FBMC signals 2 is handled, and SSB modulated signals are converted into DSB modulated signals.Then the first filter element 91
The signal and remaining that the second filter element 90 is produced is handled by demodulation matched filtering using traditional ptototype filter
FBMC signals 2, obtain the signal obtained from FBMC signals 2a.
In addition, the FBMC signals 2a after the whole filtering of 92 pairs of demodulating unit herein is demodulated.Obtained signal 2b is passed
It is handed to balanced device 93.
Balanced device 93 includes the first balanced device 94 for handling whole demodulated signal 2b and only handles corresponding with boundary block
Second balanced device of subcarrier.Second balanced device can slow down in response to with blocking caused by the SSB-MB of filter remaining symbol
(ISI) is disturbed between number.Its design is similar to the design of Fig. 7 balanced device 74.Only difference is that, the second balanced device 95 herein
It is intended to reduce and is deteriorated as caused by channel fading effect and truncation effect, and the first balanced device 94 pays close attention to what is triggered by channel fading
Deterioration, the second balanced device of unit 95 is handled to be deteriorated in response to caused by SSB-MB.
Figure 10 shows the structure of resource block 100,101.Resource block 100,101 is a part for running time-frequency resource lattice.Each
Resource block 100,101 is the specific frequency spectrum area for particular time-slot.Resource block 100,101 include frequency spectrum middle area 102,
103 and respectively positioned at resource block 100,101 frequency spectrum edge at least one frequency spectrum marginal zone 104a, 104b.
Frequency spectrum marginal zone 104a, 104b of two adjacent resource blocks 100,101 are overlapping on frequency spectrum, but on a timeline not
It is overlapping.The shared bandwidth merged of this explanation frequency spectrum marginal zone 104a, 104b.This is in Fig. 10 by labeled as 104a, 104b
Continuous black and white area in spectral regions is represented.On a timeline, although the frequency spectrum edge of two adjacent resource blocks 100,101
104a, 104b be not overlapping in area, but can be replaced using frequency spectrum.During the user occupancy that marginal zone 104 is marked by white, black
The user of mark then sends zero padding or complete no signal.Equally, when marginal zone 104 is hacked the user occupancy of colour code note, white mark
The user of note then sends zero padding or complete no signal.Specifically, as shown in FIG., the NTTI sign resources in SSB subcarriers can
Alternatively No. 1 block and No. 2 blocks are distributed to by symbol.In addition, the interval of a symbol can be more than by replacing.Adjacent resource blocks 100,
101 frequency spectrum middle area 102,103 is that double-side band is modulated, and frequency spectrum marginal zone is that single-side belt is modulated.
It is important to note that frequency spectrum marginal zone 104a, 104b are not necessarily intended to include pay(useful) load area illustrated above
With the interlocking structure (interlocking structure) in zero padding area.
Figure 11 is to show the wave filter group on all FBMC subcarriers using traditional ptototype filter.Black arrow table
Show the border of user's block.Because boundary waveform is complicated, if the channel between two contiguous blocks is uneven, exists and do between block
Disturb.
Figure 12 shows that the wave filter group of proposition utilizes SSB-MB in boundary subcarriers, and is used on conventional sub-carrier
Traditional ptototype filter.In boundary subcarriers, the symbol for belonging to No. 1 block uses lower sideband (LSB), and belongs to the symbol of No. 2 blocks
Number using upper side band (USB).LSB and USB are mutually orthogonal.Therefore, in order to reduce inter-block-interference, SSB-MB is constructed at two
Orthogonal wave filter group in the real number field of the boundary of adjacent block.In addition, in order to avoid being disturbed in block, being built at boundary subcarriers
Wave filter also realize that real number field is orthogonal with the adjacent sub-carrier in same.
Figure 13 shows the figure for building SSB-MB.Specifically, the odd number symbols on boundary subcarriers sc0 belong to No. 1 block, make
With lower sideband (LSB) wave filter pLSB(t) it is modulated.Even number symbols on boundary subcarriers sc0 belong to No. 1 block, use top
Band (USB) wave filter PUSB(t) it is modulated.Every other subcarrier sc1...scN uses biography used in FBMC systems
Unite ptototype filter pi(t) it is modulated, wherein i is the index of subcarrier.
The general expression of ptototype filter that transmitter side is used for SSB-MB is：
WhereinRepresent pi(t) Xi Baite (Hilbert) conversions.pLSBOr (p (t)USB) and p (t)i(t) between
Relation illustrated in fig. 14.It shows ptototype filter pUSB(t) impulse response：pUSB(t) real part
It is traditional ptototype filter pi(t), pUSB(t) imaginary part is pi(t) imaginary part of Xi Baite conversions.
By the orthogonal design for ensureing wave filter, i.e. support that complex field is orthogonal between different masses, and retain in each block
Real number field is orthogonal, and SSB-MB structure does not both produce inter-block-interference, does not also produce interference in block.
However, due to having used finite length filtering device, Subnormal subgroup distortion caused by LSB or USB actual realization is smaller, because
This, causes to occur in that marginal intersymbol interference on boundary subcarriers sc0.It can be easy in receiver-side by using balanced device
Eliminate this kind of interference.
Orthogonal labor is as follows：
1) LSB and the complex field of USB filter in boundary subcarriers sc0 is orthogonal：
Transfer real value g (t) and its uncommon Bert conversion Hg(t) orthogonal attributes, i.e.,<g(t),Hg(t)>=0, LSB and USB filters
Ripple device keeps orthogonal, i.e.,
<pLSB(t),pUSB(t)>
=<HPT(t)(t),pT(t)>+<pT(t),HPT(t)(t)>+j(<pT(t),pT(t)>-<HPT(t),HPT(t)(t)>)}
=0
Therefore, at boundary subcarriers, LSB and USB are mutually orthogonal, to ensure no inter-block-interference.
2) real number field in same between the adjacent subcarrier of boundary subcarriers is orthogonal：
First, the LSB at boundary subcarriers (sc0) place and the ptototype filter at adjacent sub-carriers (sc1) place in first piece
It is orthogonal as follows：
pLSB(t),pT(t)ej2πΔft>R
=R<HPJ(r)(t),pT(t)>e-j2πΔft+j<pT(t),pT(t)>e-j2πΔft}
=0
Wherein, Δ f is the sampling interval in frequency.Above-mentioned equation is suitable for Xi Baite transfer functions and FBMC systems
The real number field orthogonal attributes of ptototype filter.
Secondly, it can equally show that the USB at boundary subcarriers (sc0) place is filtered with the prototype at adjacent sub-carriers in second piece
Ripple device it is orthogonal.
Therefore, neighbouring with them subcarrier is orthogonal respectively for the wave filter in boundary subcarriers, to ensure to do in no block
Disturb.
3) LSB or LSB or the real number field of USB filter in boundary subcarriers sc0 is orthogonal and its problem of implementation：
Using Xi Baite convert and tradition FBMC systems in ptototype filter real number field orthogonal attributes, holding LSB (or
USB) the orthogonality of wave filter, i.e.,
<pLSB(t),pLSB(t)>R
=R<HPT(t)(t),HPT(t)(t)+pT(t),pT(t)>The δ (t) of }=2
Similarly, the situation of USB filter can be released.
Therefore, using the endless wave filter at boundary subcarriers, LSB or USB are orthogonal, to ensure no intersymbol just
Hand over.
However, can only realize finite length filtering device in reality.Such actual limitation causes LSB or USB filter to go out
Slight nonorthogonality is showed.Accordingly, there exist small intersymbol interference.It can be easy in receiver-side reduction by balanced device
This interference, will be described in more detail during description Figure 16.
Figure 15 shows the overview of the SSB demodulation at boundary subcarriers sc0.Specifically, received at boundary subcarriers sc0
Wave filter of the symbol through overmatchingWithThe symbol recovered respectively in odd positions and the generation of even number position.Mark
NumberWithThe p that representative graph 13 is provided respectivelyLSBAnd p (t)USB(t) wave filter of matching.Every other subcarrier
Sc1...scN utilizes traditional ptototype filter p used in FBMC systemsi(t) it is demodulated, wherein i is the rope of subcarrier
Draw.
Figure 16 is shown carries out details in a balanced way by the balanced device in Fig. 7 and Fig. 9 to SSB symbols.Specifically, figure is shown
The details of 7 balanced device 74.Deserializer (serial-to-parallel-converter) 160 is connected to numeral
Fourier transform unit 161, then digital fourier transformation unit 161 is connected to including the He of Part I frequency domain equalizer 163
On the frequency domain equalizer 162 of Part II frequency domain equalizer 164.Digital fourier transformation unit 161 is connected to and Part II
On the Part I frequency domain equalizer 163 that frequency domain equalizer 164 is connected.Part II frequency domain equalizer 164 is connected further to
Inverse number word Fourier transform unit 165, inverse number word Fourier transform unit 165 is connected to parallel-to-serial converter 166.
Deserializer 160 be adapted to be from serial order to and row order SSB demodulation after arrange complex symbol.These
Symbol can be all in the odd positions of SSB bands, can also be all in the even number position of SSB bands.Then digital fourier transformation unit
161 convert a signal into frequency domain.DFT sizes are identical with body pay(useful) load symbol lengths.Then frequency domain equalizer 162 is performed
Frequency domain equalization, to reduce the residual intersymbol interference from wave filter group.It is multiplied by by dataVector carries out equilibrium, wherein
HeqIt is the equivalent channel response in frequency domain, ()*It is complex conjugate.Specifically, Part I frequency domain equalizer 163 will be believed first
Number it is multiplied by 1/H* fb-eq, obtained signal is then multiplied by W by Part II frequency domain equalizer 164* ch-eq。
Equivalent channel response is shown in Figure 17, whereinWithIt is connecing for SSB subcarriers (sc0)
Receipts machine wave filter and transmitter filter, length can be more than a symbol (for example, length is 8MFFT).FFT size is by MFFT
Provide, channel impulse response is Lch.In this case, to be far smaller than emitter (receiver) wave filter long for channel impulse response
Equivalent channel in degree, time domain can be abbreviated as：
Wherein h0It is SSB subcarriers sc0 channel gain, DFT () is DFT operations.
It is the response of eigenfilter group, it only relies upon the ptototype filter for SSB modulation and demodulation.For example, its coefficient can be pre-
First it is determined and stored in look-up table.
The situation for the PHYDYAS that DFT sizes for SSB bands are 14,Coefficient such as
Shown in following table：
Coefficient
Continue in figure 16, after frequency domain equalization, signal is converted to time domain by inverse number word Fourier transform device 165, and
Resequenced by parallel-to-serial converter 166 as serial signal.
In order to assess such scheme, the simulation parameter that base is given in the following table carries out Computer Simulation.
Simulation parameter
| FFT sizes MFFT | 512 |
| Ptototype filter | PHYDYAS length=4MFFT |
| Every subcarrier symbol | 14 |
| Per TBS subcarriers | 36 |
| Per TTI TBS | 2 |
| Modulation | MCS9,MCS16,MCS25 |
Figure 18 shows the spectrum efficiency of above-mentioned dispensing device and reception device.It is easy to see that with the son that describes previously
Carrier wave back-off scheme is compared, and the spectrum efficiency of the program is considerably higher, but dependent on the number for the subcarrier for distributing to each user
Amount.If the number of subcarriers of each (user) block is few, gain may be up to 50%.
Figure 19 and Figure 20 show bLock error rate BLER and SNR under the micro- scene in 3GPP SCME urban districts and urban macro scene
(dB).In order to contrast, further it is shown that the result of three reference schemes：OFDM (LTE/LTE- evolution), NoIBI (a subcarrier
Keep out of the way), and IBI (no subcarrier is kept out of the way, therefore there is inter-block-interference).Particularly Gao SNR areas, using high modulation and
Encoding scheme, the scheme proposed can be effectively reduced inter-block-interference.
Figure 21 shows the further embodiment for sending equipment.It is applied to the situation of descending MIMO precodings herein.First
Resource block 210 and Secondary resource block 211 each have marginal zone, collectively constitute Border subcarrier sc0.Each Beam-former
212nd, 213 pairs of obtained signals carry out Wave beam forming.Then user equipment 214,215, such as cell phone, by channel h1,
H2 sends and receives these signals.Therefore, it can avoid doing between the block between user No. 1 and No. 2 in succession by using the program
Disturb.
For another example Figure 22 shows the embodiment of the transmission equipment suitable for up multiple access situation.Herein, first resource
Block 220 and Secondary resource block 221 are same each with marginal zone, collectively constitute Border subcarrier sc0.Different users 1
Number and No. 2 obtained signal is sent to base station 222 by channel h1, h2.Therefore, it can be avoided in succession by using the program
Inter-block-interference between user No. 1 and No. 2.
As long as in addition, signal is OQAM modulation, and for different user (block), communication system is deposited using frequency domain multiple
Take, be just applied to the replaceable transmission from FBMC and different ptototype filters (except PHYDYAS wave filters).
Figure 23 shows the embodiment of the sending method according to fourth aspect.The purpose of sending method is according to pay(useful) load
The generation FBMC of signal 1 signals 2.In the first step 230, according to pay(useful) load signal generation include at least one frequency spectrum marginal zone and
At least one resource block of at least one frequency spectrum middle area.In second step 231, by obtaining from pay(useful) load signal 1
The Part I of signal is filtered, and the content of the frequency spectrum middle area of resource block is generated, so as to generate the double-side band of FBMC signals 2
Modulated Part I.In the 3rd step 232, filtered by the Part II of the signal to being obtained from pay(useful) load signal,
The content of the frequency spectrum marginal zone of resource block is generated, so that the modulated Part II of the single-side belt for generating FBMC signals 2.
Figure 24 shows the embodiment of the method for reseptance according to the 5th aspect.The purpose of method of reseptance is according to transmission
FBMC signals 2 regenerate pay(useful) load signal 1.In the first step 240, to the modulated Part I of double-side band of FBMC signals
Filtered, so as to generate the Part I of the signal obtained from FBMC signals 2.In second step 241, to FBMC signals
The modulated Part II of single-side belt is filtered, so as to generate the Part II of the signal obtained from FBMC signals 2.The last 3rd
In step 242, pay(useful) load signal 1 is regenerated according to the signal obtained from FBMC signals 2.
, can be with further reference to the embodiment about sending equipment specifically due to this method and equipment close association
It is bright.
The invention is not restricted to shown example, the feature of exemplary embodiment can be used in any advantageous combination.
Herein in conjunction with various embodiments, invention has been described.However, with reference to the accompanying drawings, disclosure and appended power
When the research of sharp claim is put into practice to invention claimed, it will be appreciated by those skilled in the art that and realizing disclosed
Embodiment other deformations.In claim, word " comprising " is not excluded for other elements or step, indefinite article " one " or
" one " is not excluded for multiple.Single processor or other units can realize the function of some described in claim.It is logical
Some measures can be recorded in Chang Butong dependent claims, but this is not intended that these measures can not be advantageously combined.
Computer program can be stored/distributed on suitable medium, for example, provided or as other hardware together with other hardware
Optical storage medium or solid state medium that a part is provided, can also pass through internet or other wired or wireless communication systems etc.
Other forms are distributed.
Claims (15)
1. one kind is used for the transmission equipment (3) that filter bank multi-carrier FBMC signals (2) are generated according to pay(useful) load signal (1),
The transmission equipment includes at least one filter element (5),
Wherein, the transmission equipment (3) is adapted to be generates according to running time-frequency resource lattice corresponding with the pay(useful) load signal (1)
At least one resource block (100,101,210,211,220,221), wherein, each resource block (100,101,210,211,220,
221) it is specific frequency spectrum area for particular time-slot, and including a frequency spectrum middle area (102,103) and positioned at the resource
At least one frequency spectrum marginal zone (104a, 104b) of the frequency spectrum edge of block (100,101,210,211,220,221),
Wherein, at least one described filter element (5) is adapted to be by the signal to being obtained from the pay(useful) load signal (1)
The Part I of (1d) is filtered, in the middle of the frequency spectrum for generating each resource block (100,101,210,211,220,221)
Area (102,103), so that the modulated Part I of double-side band of the FBMC signals (2) is generated,
Wherein, described at least one filter element (5) is adapted to be by least to being obtained from the pay(useful) load signal (1)
The Part II of the signal (1d) is filtered, and generates the described of each resource block (100,101,210,211,220,221)
At least one frequency spectrum marginal zone (104a, 104b), so as to generate the modulated Part II of single-side belt of the FBMC signals (2).
2. transmission equipment (3) according to claim 1, wherein the single-side belt modulated second of the FBMC signals (2)
Part includes：
- play initial line corresponding frequency spectrum cut-off side with the baseband signal of bottom,
- non-cut-off side,
Wherein, at least one described filter element (5) be adapted to be the generation frequency spectrum marginal zone (104a, 104b) it is described extremely
A few pay(useful) load area, so that
The non-cut-off side of the Part II of-FBMC signals (2) is in the frequency spectrum marginal zone (104a, 104b) one
On the frequency spectrum middle area (102,103) on side, and
The cut-off side of the Part II of-FBMC signals (2) in the frequency spectrum marginal zone (104a, 104b) on one side
Non- frequency spectrum middle area (102,103) on.
3. transmission equipment (3) according to claim 1 or 2,
Wherein, the modulated Part I of the double-side band of the FBMC signals (2) of the frequency spectrum middle area (102,103) and institute
State the modulated Part II of single-side belt part on frequency spectrum of the FBMC signals (2) of frequency spectrum marginal zone (104a, 104b)
It is overlapping, and
Wherein, the modulated Part II of the single-side belt of the FBMC signals (2) there is no or almost no beyond with the frequency spectrum
The component of signal at the frequency spectrum edge of the relative frequency spectrum marginal zone in middle area (102,103).
4. transmission equipment (3) according to any one of claim 1 to 3,
Wherein, each frequency spectrum marginal zone (104a, 104b) includes：
At least one pay(useful) load section of-Part II including the FBMC signals (2), and/or
- include at least one zero padding or at least one zero padding of no signal section, and
Wherein, it is described if at least one pay(useful) load section and at least one zero padding section are all included in frequency spectrum marginal zone
At least one pay(useful) load section and at least one described zero padding section have identical duration, and continuous row in time
Row.
5. transmission equipment (3) according to claim 4, wherein each frequency spectrum marginal zone (104a, 104b) includes：
- at least two pay(useful) loads section, and/or
- at least two zero paddings section, and
Wherein, it is described if at least two pay(useful) loads section and at least two zero paddings section are all included in frequency spectrum marginal zone
At least two pay(useful) loads section and at least two zero padding section are submitted in the frequency spectrum marginal zone (104a, 104b) the inherent time
For arrangement.
6. transmission equipment (3) according to any one of claim 1 to 5, wherein, the transmission equipment (3) also includes：
- coding unit (60), is adapted for carrying out symbol mapping to the pay(useful) load signal (1), obtains symbol mapping effectively negative
Information carrying number (1a), and/or
- resource mapping unit (61), is adapted for mapping effective load signal (1a) to the symbol or believes from the pay(useful) load
The signal (1a) that number (1) is obtained carries out resource impact, obtains resource impact pay(useful) load signal (1b), and/or
- modulating unit (62,82), is adapted for modulating the resource impact pay(useful) load signal (1b) or believes from the pay(useful) load
The signal (1b) that number (1) is obtained, obtains modulated pay(useful) load signal (1c), and/or
- layer map unit (63), is adapted for obtaining to the modulated pay(useful) load signal (1c) or from the pay(useful) load signal (1)
The signal (1c) arrived carries out MIMO layer mapping, obtains layer and maps effective load signal (1d).
7. one kind, which is used for basis, includes the filter bank multi-carrier of at least one resource block (100,101,210,211,220,221)
FBMC signals (2) receive the receiving device (4) of pay(useful) load signal (1), and the receiving device includes at least one filter element
(6),
Wherein, resource block (100,101,210,211,220,221) is the specific frequency spectrum area for particular time-slot, and is each provided
Source block (100,101,210,211,220,221), which includes one, includes the modulated Part I of double-side band of the FBMC signals (2)
Frequency spectrum middle area (102,103), and
The modulated Part II of single-side belt including the FBMC signals (2) be located at each resource block (100,101,210,211,
220,221) at least one frequency spectrum marginal zone (104a, 104b) of frequency spectrum edge,
Wherein, at least one described filter element (6) is adapted to be the double-side band modulated first to the FBMC signals (2)
Part is filtered, so that the Part I of the signal (2a) obtained from the FBMC signals (2) is generated, and
Wherein, at least one described filter element (6) is adapted to be the single-side belt modulated second to the FBMC signals (2)
Part is filtered, so as to generate the Part II of the signal (2a) obtained from the FBMC signals (2).
8. receiving device (4) according to claim 7, wherein, the FBMC letters of the frequency spectrum middle area (102,103)
The modulated Part I of the double-side band of number (2) and the institute of the FBMC signals (2) of the frequency spectrum marginal zone (104a, 104b)
The modulated Part II of single-side belt is stated to partly overlap on frequency spectrum, and
Wherein, the modulated Part II of the single-side belt of the FBMC signals (2) there is no or almost no beyond with the frequency spectrum
The component of signal at the frequency spectrum edge of the relative frequency spectrum marginal zone (104a, 104b) in middle area (102,103).
9. the receiving device (4) according to claim 7 or 8, wherein each frequency spectrum marginal zone (104a, 104b) includes：
At least one pay(useful) load section of-Part II including the FBMC signals (2), and/or
- include at least one zero padding or at least one zero padding of no signal section, and
Wherein, it is described if at least one pay(useful) load section and at least one zero padding section are all included in frequency spectrum marginal zone
At least one pay(useful) load section and at least one described zero padding section have identical duration, and continuous row in time
Row.
10. receiving device (4) according to claim 9, wherein each frequency spectrum marginal zone (104a, 104b) includes：
- at least two pay(useful) loads section, and/or
- at least two zero paddings section, and
Wherein, it is described if at least two pay(useful) loads section and at least two zero paddings section are all included in frequency spectrum marginal zone
At least two pay(useful) loads section and at least two zero padding section are submitted in the frequency spectrum marginal zone (104a, 104b) the inherent time
For arrangement.
11. the receiving device (4) according to any one of claim 7 to 10, wherein, the receiving device (4) includes：
- layer de-mapping unit, is adapted for the Part I of signal (2a) to being obtained from the FBMC signals (2) and from institute
The Part II for stating the signal (2a) that FBMC signals (2) are obtained carries out MIMO layer demapping, obtains layer demapping signal
The Part II of Part I and the layer demapping signal, and/or
- demodulating unit (72,92), is adapted for the Part I, the layer demapping signal to the layer demapping signal
The Part II or the signal (2a) that is obtained from the FBMC signals (2) be demodulated, obtain demodulated signal (2b)
The Part II of Part I and the demodulated signal (2b), and/or
- balanced device (73,94), is adapted for the Part I of the demodulated signal (2b) or from the FBMC signals
(2) signal (2b) obtained carries out double-side band equilibrium, obtains the Part I of equalizing signal (2c), and/or solved to described
The signal (2b) adjusted the Part II of signal (2b) or obtained from the FBMC signals (2) carries out single-side belt equilibrium, obtains
The Part II of the equalizing signal (2c), and/or
- resource de-mapping unit (76), is adapted for the letter obtained to the equalizing signal (2c) or from the FBMC signals (2)
Number (2c) carries out resource demapping, obtains resource demapping signal (2d), and/or
- decoding unit (77), is adapted for the signal obtained to the resource demapping signal (2d) or from the FBMC signals (2)
(2d) carries out symbol de-maps, obtains the pay(useful) load signal (1).
12. it is a kind of including sending equipment (3) according to the first of any one of claim 1 to 6, appointing according in claim 1 to 6
The second of one sends equipment (3) and the communication system of the receiving device (4) according to any one of claim 7 to 11,
Wherein, the first transmission equipment (3), which is adapted to be transmission, includes the first pay(useful) load signal of first resource block (100)
(1), the first resource block (100) includes the first frequency spectrum marginal zone (104a),
Wherein, the second transmission equipment (3), which is adapted to be, sends the second pay(useful) load letter for including Secondary resource block (101)
Number, the Secondary resource block (101) includes the second frequency spectrum marginal zone (104b),
Wherein, the first transmission equipment (3) and the second transmission equipment (3) are adapted to be while sending the institute that frequency spectrum closes on
First resource block (100) and the Secondary resource block (101) are stated, and
The frequency spectrum marginal zone of the first resource block (100) and the Secondary resource block (101) is sent on the same frequency
(104a, 104b), wherein, at least one pay(useful) load section and the second frequency spectrum side of the first frequency spectrum marginal zone (104a)
At least one zero padding section in edge area (104b) is overlapping, and at least one pay(useful) load of the second frequency spectrum marginal zone (104b)
Section is overlapping with least one zero padding section of the first frequency spectrum marginal zone (104a),
Wherein, the receiving device (4) is adapted to be the reception first resource block (100) and the Secondary resource block (101),
And thus regenerate the first pay(useful) load signal (1) and the second pay(useful) load signal.
13. method of the one kind for generating filter bank multi-carrier FBMC signals (2) according to pay(useful) load signal (1), including with
Lower step：
- according to running time-frequency resource lattice corresponding with the pay(useful) load signal (1) generate (230) at least one resource block (100,
101,210,211,220,221), wherein, each resource block (100,101,210,211,220,221) be directed to particular time-slot
Specific frequency spectrum area, and including a frequency spectrum middle area (102,103) and positioned at the resource block (100,101,210,211,
220,221) at least one frequency spectrum marginal zone (104a, 104b) of frequency spectrum edge,
The Part I of-the signal to being obtained from the pay(useful) load signal (1) is filtered (231) to be believed with generating the FBMC
The modulated Part I of double-side band of number (2), so as to generate the frequency of each resource block (100,101,210,211,220,221)
Compose middle area (102,103), and
It is described to generate that the Part II of-signal to being obtained from the pay(useful) load signal (1) is filtered (232)
The modulated Part II of single-side belt of FBMC signals (2), so as to generate each resource block (100,101,210,211,220,221)
At least one described frequency spectrum marginal zone (104a, 104b).
14. one kind, which is used for basis, includes the filter bank multi-carrier of at least one resource block (100,101,210,211,220,221)
The method that ripple FBMC signals (2) receive pay(useful) load signal (1), wherein, resource block (100,101,210,211,220,221) is
For the specific frequency spectrum area of particular time-slot, each resource block (100,101,210,211,220,221) includes：
The frequency spectrum middle area (102,103) of-one modulated Part I of double-side band including the FBMC signals (2), and
- at least one frequency spectrum marginal zone positioned at the frequency spectrum edge of each resource block (100,101,210,211,220,221)
(104a, 104b), wherein at least one described frequency spectrum marginal zone (104a, 104b) includes the single-side belt of the FBMC signals (2)
Modulated Part II,
Wherein, it the described method comprises the following steps：
- (240) are filtered to the modulated Part I of the double-side band of the FBMC signals (2), so as to generate from described
The Part I for the signal that FBMC signals (2) are obtained,
- (241) are filtered to the modulated Part II of the single-side belt of the FBMC signals (2), so as to generate from described
The Part II for the signal that FBMC signals (2) are obtained, and
- regenerate the pay(useful) load signal (1) of the signal that (242) are obtained from the FBMC signals (2).
15. a kind of computer program with program code, when described program is performed on computer or digital signal processor
When, for performing all steps according to claim 13 or 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2014/078671 WO2016096032A1 (en) | 2014-12-19 | 2014-12-19 | Efficient fbmc transmission and reception for muliple access communication systems |
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| CN107113265B CN107113265B (en) | 2020-06-26 |
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| CN114916086A (en) | 2018-08-07 | 2022-08-16 | 华为技术有限公司 | Random access method, communication device, chip and storage medium |
| CN109714287A (en) * | 2018-10-18 | 2019-05-03 | 重庆邮电大学 | The symbol period blind estimate of FBMC signal under multidiameter fading channel |
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| WO2016096032A1 (en) | 2016-06-23 |
| CN107113265B (en) | 2020-06-26 |
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