CN106488579A - A kind of signal processing method and device - Google Patents
A kind of signal processing method and device Download PDFInfo
- Publication number
- CN106488579A CN106488579A CN201510524832.8A CN201510524832A CN106488579A CN 106488579 A CN106488579 A CN 106488579A CN 201510524832 A CN201510524832 A CN 201510524832A CN 106488579 A CN106488579 A CN 106488579A
- Authority
- CN
- China
- Prior art keywords
- subband
- sequence
- waveform
- road
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/02—Hybrid access techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
The invention discloses a kind of signal processing method and device.In the method, it is first determined N number of subband that data waiting for transmission take, and the corresponding contoured configuration parameter of each subband, wherein N is the integer more than 1；According to the corresponding contoured configuration parameter of each subband, respectively tilde modulation is carried out to data waiting for transmission on each subband, comprising processes such as serial/parallel conversion, phase place pretreatment, inverse fast Fourier transform, subcarrier filtering, subband signal filtering, N number of subband waveform is obtained；N number of subband waveform is polymerized, is formed baseband waveform.Present invention achieves the subband of multiple waveforms is carried out polymerization process, the features such as with low delay, high-speed mobile, Large Copacity.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of signal processing method and device.
Background technology
LTE (Long Term Evolution, Long Term Evolution) be by 3GPP (The 3rd Generation
Partnership Project, third generation partner program) UMTS (the Universal Mobile that organizes to set up
Telecommunications System, UMTS) technical standard Long Term Evolution.
OFDM (Orthogonal Frequency Division Multiplexing, OFDM) conduct
A kind of high speed transmission technology of effective antagonism multipath channel is widely used in system of broadband wireless communication.
OFDM is except the ability of anti-multipath that had, and is highly susceptible to and MIMO (Multiple-Input
Multiple-Output, multiple-input and multiple-output) technology is combined.LTE system and Wi-Fi (wireless office
Domain net) all using OFDM as physical layer key technology.
It is transmitted using OFDM in LTE system, subcarrier spacing is 15KHz, Transmission Time Interval
For 1ms, in the larger scene of the frequency deviations such as high-speed mobile, performance loss is larger.The load that presently, there are
Ripple polymerization can improve system transfer rate, but still using the basic configuration of LTE inside carrier wave, and
There is larger protection bandwidth between carrier wave, spectrum utilization efficiency is relatively low.Therefore, efficient waveform transfer is
The diversified business demand of 5G is supported, and industry needs research and the problem for solving.
Content of the invention
To achieve these goals, a kind of method and device of signal transacting is embodiments provided.
A kind of signal processing method that one embodiment of the present of invention is provided, including：
Determine N number of subband that data waiting for transmission take, and the corresponding contoured configuration parameter of each subband,
N is the integer more than 1；
According to the corresponding contoured configuration parameter of each subband, respectively data waiting for transmission on each subband are carried out
Tilde is modulated, and obtains N number of subband waveform symbol；
N number of subband waveform symbol is polymerized, is formed baseband waveform signal.
A kind of signal processing apparatus that one embodiment of the present of invention is provided, including：
Determining module：For determining N number of subband of data waiting for transmission occupancy, and each subband is corresponding
Contoured configuration parameter, N are the integer more than 1；
Tilde modulation module, the quantity of the subband waveform processing module is N, at the i-th subband waveform
Reason module is used for according to the corresponding contoured configuration parameter of the i-th subband, and data waiting for transmission on the i-th subband are entered
Row tilde is modulated, and obtains N number of subband waveform；Wherein, 1≤i≤N；
Waveform aggregation module：N number of subband waveform is polymerized, is formed baseband waveform signal.
In the above embodiment of the present invention, the multiple subband signals for predefining participation waveform polymerization are corresponding
Contoured configuration parameter, according to contoured configuration parameter, carry out subband waveform symbol tune to each subband signal
All subband waveform symbols are finally polymerized by system, form baseband waveform signal, it is achieved that different sub-band
The polymerization of waveform signal, improves the efficiency of signal transmission.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in embodiment description
The accompanying drawing for using is needed to briefly introduce, it should be apparent that, drawings in the following description are only the present invention's
Some embodiments, for one of ordinary skill in the art, in the premise for not paying creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is signal processing flow schematic diagram provided in an embodiment of the present invention；
Fig. 2 modulates schematic flow sheet for tilde provided in an embodiment of the present invention；
Fig. 3 is the system architecture schematic diagram of subband waveform symbol-modulated device provided in an embodiment of the present invention；
Fig. 4 is signal processing apparatus schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to this
Bright it is described in further detail, it is clear that described embodiment is only present invention some embodiments,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The all other embodiment obtained under the premise of going out creative work, belongs to the scope of protection of the invention.
Referring to Fig. 1, it is signal processing flow schematic diagram provided in an embodiment of the present invention, the flow process can be by base station
Execute.As illustrated, the flow process may include following steps：
Step 101：Determine N number of subband that data waiting for transmission take, and the corresponding waveform of each subband
Configuration parameter.
Wherein, the data waiting for transmission can be multiple targets UE (User Equipment, user equipment,
That is terminal) data, the data of each target UE can take one or more subbands.The present invention is implemented
Example allows for the data of different sub-band to be modulated into different wave symbol, then these different wave symbols are gathered
Transmit after conjunction.
When being embodied as, can be according to target UE of data to be transmitted, the class of the affiliated business of data waiting for transmission
The factors such as type, the transmission performance requirement of data waiting for transmission, determine the subband that data waiting for transmission can take.
For example, the downlink data of UE 1 belongs to the video traffic data of high rate data transmission, and the downlink data of UE 2 is
The data that low time delay is required, for such case, it may be determined that by the modulate downstream data of UE 1 to subband
1 and sent using OFDM tilde, the modulate downstream data of UE 2 to subband 2 and is adopted GFDM
(Generalized Frequency Division Multpexing, broad sense frequency division multiplexing) tilde sends.
Wherein, subband 1 is the subband of a continuous 10MHz bandwidth, including 600 at intervals of 10KHz's
Subcarrier, subband 2 are the subband of a continuous 10MHz bandwidth, including 80 at intervals of 120KHz
Subcarrier.
Base station can determine every height after N number of subband that data waiting for transmission take is determined in the following ways
Carry corresponding contoured configuration parameter：Contoured configuration parameter list is obtained, mesh is each corresponded to according to N number of subband
Mark waveform, determines the corresponding contoured configuration parameter of each subband.
When being embodied as, contoured configuration parameter list can be pre-set, the contoured configuration parameter list includes multiple
The contoured configuration parameter of waveform, when tilde modulation is carried out, can be according to the contoured configuration parameter in the table
Carry out the process such as tilde modulation, filtering.
Preferably, contoured configuration parameter may include following in one or more combination：
- modulation system, the modulation system may include QAM (Quadrature Amplitude Modulation,
Quadrature amplitude modulation) or offset orthogonal Modulation and Amplitude Modulation OQAM (Offset Quadrature
Amplitude Modulation, offset orthogonal Modulation and Amplitude Modulation)；
- subband bandwidth；
- subcarrier spacing；
Effective subcarrier number that-one subband includes；
- subcarrier filters parameter；
- CP length；
- subband signal filter parameter；
The subsymbol number included in-tilde.
Step 102：According to the corresponding contoured configuration parameter of each subband, respectively to be transmitted on each subband
Data carry out tilde modulation, obtain N number of subband waveform symbol.
Step 103：N number of subband waveform symbol is polymerized, is formed baseband waveform symbol.
The above embodiment of the present invention achieves the modulation to multiple different sub-band waveform signals and is polymerized, and different
The new waveform used by subband compared with OFDM, with lower band outward leakage, therefore between subband
Less protection interval can be adopted, improves the utilization ratio of bandwidth.In addition, different sub-band waveform can root
(such as low time delay business is permissible with traditional HD video business to adjust optimum configured transmission according to business demand
Parameter using each transmission is optimum), improve the reliability of transmission.
With reference to Fig. 2 and Fig. 3, the process that implements to the step 102 in flow process shown in Fig. 1 is carried out
Describe in detail.Wherein, Fig. 2 is that the flow process of subband waveform symbol-modulated process provided in an embodiment of the present invention is shown
It is intended to, Fig. 3 is the system architecture schematic diagram of subband waveform symbol-modulated device provided in an embodiment of the present invention.
Illustrate so that the tilde to the first subband is modulated as an example below, to be transmitted on other subbands
Data carry out the process all same of tilde modulation.As shown in Fig. 2 to the number transmitted on the first subband
May include according to the process for carrying out tilde modulation：
Step 201：Obtain corresponding first serial sequence of the first subband.
Step 202：First serial sequence is carried out serioparallel exchange, M road sequence is obtained, per road sequence
Comprising K modulation symbol, a subsymbol being finally modulated onto per road sequence and uploading defeated, each subsymbol exists
Include K subcarrier on frequency domain；Wherein, K is the quantity of effective subcarrier that first subband includes,
M is the quantity of subsymbol, and K and M is the integer more than or equal to 1.
Preferably, after above-mentioned steps 202, concurrently to K modulation symbol in the sequence of the M road
Number enter line phase pretreatment.If adopting quadrature amplitude modulation QAM modulation to first subband, to M
Road sequence is multiplied by coefficient 1 respectively；Or, if adopting offset orthogonal Modulation and Amplitude Modulation OQAM to first subband
Modulation, then be multiplied by coefficient respectively to M road sequenceWherein, D=Lg- 1, LgRepresent
The length of subcarrier filters Central Plains mode filter, 0≤m≤M-1,0≤k≤K-1.Phase place pretreatment behaviour
Make so that more flexible to tilde modulated process, both the signal after QAM modulation can be entered
Row is processed, it is also possible to processed to carrying out the signal after OQAM modulation.
Step 203：IFFT (Inverse Fast Fourier is concurrently carried out to M road sequence
Transform, inverse fast Fourier transform), M road sequence is obtained, includes Q modulation symbol per road sequence,
Wherein, Q is the size of IFFT.
In above-mentioned steps 203, the size of IFFT isWhereinExpression rounds up, B
For target sub-band sub-carriers bandwidth, W is system bandwidth.The position that K modulation symbol is input in IFFT
It is set to the corresponding K subcarrier of the K modulation symbol corresponding position in system broad, remaining position
Put filling 0.
Step 204：Concurrently subcarrier filtering is carried out to each subcarrier in the M road sequence after IFFT,
Obtain Q road sequence, Q road sequence Zhong Mei road sequence include L subsymbol, L be more than or wait
In 1 integer.
In above-mentioned steps 204, concurrently sub- load is carried out to each subcarrier in the M road sequence after IFFT
When ripple is filtered, Q subcarrier filter unit executed in parallel, j-th subcarrier filter unit are used for IFFT
J-th subcarrier in the sequence of M road afterwards carries out subcarrier filtering, obtains Q road sequence, per road sequence
Length is integer that L, L are more than or equal to 1；Wherein, 1≤j≤Q；The wave filter for using is linear volume
Product wave filter or cyclic convolution wave filter.When subcarrier filters are linear filters, then L>M；
When subcarrier filters are cyclic convolution wave filters, then L=M.
Step 205：Parallel serial conversion is carried out to Q road sequence, obtains the second serial sequence, described second
Serial sequence includes the first via sequence being sequentially connected in series to Q road sequence；
Preferably, after above-mentioned steps 205, subband signal filtering is carried out to second serial sequence.
Further, if subband is made up of continuous subcarrier, subband signal wave filter can use subband pair
The bandpass filter that answers；If subband is made up of discontinuous subcarrier, subband signal wave filter can be using son
Carry corresponding comb filter.
When carrying out subband signal filtering to second serial sequence, can be using one of following several ways：
Mode 1：The use of length is the cyclic convolution wave filter of M, subband is carried out to second serial sequence
Signal filtering, obtains GFDM waveform；
Mode 2：The use of length is the linear convolution wave filter of P, subband is carried out to second serial sequence
Signal filtering, obtains FBMC (Filter Bank Multi-Carrier, filter bank multi-carrier) waveform, P
Overlap factor for FBMC wave filter；
Mode 3：The use of length is the cyclic convolution wave filter of M+P-1, second serial sequence is carried out
Subband signal is filtered, and obtains FBMC waveform, and wherein, the front P position in the M+P-1 is P with length
Linear convolution wave filter overlap factor identical, remaining M-1 position be 0；
Mode 4：Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, right
Second serial sequence carries out subband signal filtering, obtains UFMC (Universal Filtered
Multi-Carrier, general filtering multicarrier) waveform；
Mode 5：Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, right
Second serial sequence carries out subband signal filtering, obtains OFDM waveform.
Several subband signal filtering are only preferred implementation scheme provided in an embodiment of the present invention, the present invention couple above
This is not restricted.
Alternatively, before or after subband signal filtering is carried out to second serial sequence, to subband
Waveform signal adds Cyclic Prefix.
In the above embodiment of the present invention, the multiple subband signals for predefining participation waveform polymerization are corresponding
Contoured configuration parameter, according to contoured configuration parameter；Subband waveform process is carried out to each subband signal,
Including serial/parallel conversion, phase place pretreatment, inverse fast Fourier transform, subcarrier filtering, subband signal filtering
Etc. process so that more flexible to subband waveform processing procedures, both can be to the letter after QAM modulation
Number processed, it is also possible to process to carrying out the signal after OQAM modulation, can generate waveform is
The target sub-band waveform such as GFDM, FBMC, UFMC or OFDM；Finally all subband waveforms are entered
Row polymerization.
In order to be more clearly understood that the above embodiment of the present invention, below by taking a concrete application scene as an example,
The process that implements to the above embodiment of the present invention is described.
The data of user 1 and user 2 are sent in the bandwidth of a 20MHz, and centre frequency is 2GHz；
Wherein, user 1 is video traffic data, and super clear video needs high rate data transmission；User 2 is low delay industry
The data of business.The data transfer of user 1 takes the subband of 1 continuous 10MHz, and adopts OFDM
Wavy manner is transmitted, and subcarrier spacing is Δ fOThe bandwidth of=15KHz, 10MHz includes 600 subcarriers.
The data transfer of user 2 takes the continuous subband of other 10MHz, and is passed using the wavy manner of GFDM
Defeated, subcarrier spacing is Δ fG=120KHz, comprising 80 subcarriers.The time tranfer of 1 subframe of consideration
Length is 1ms, and user 1 transmits 14 OFDM symbol (needing to add CP) in 1 sub- frame in；With
14 GFDM symbols are transmitted in 1 sub- frame in family 2.Sampling rate is 30.72MHz.Base station
The contoured configuration parameter list at end is as shown in table 1：
Table 1
Base station is handled as follows process according to above-mentioned contoured configuration table, the subband data to user 1：
1) first serioparallel exchange is carried out to the data after 1 coded modulation of user, 1 circuit-switched data is obtained, the road
Include 600 parallel modulation symbols in data again, i.e. the road sequence is finally modulated onto a subsymbol
Upper transmission, each subsymbol include 600 subcarriers on frequency domain；
2) corresponding sub-carrier positions are put into 600 parallel modulation symbols, other sub-carrier positions fillings 0,
Then 2048 points of inverse fast Fourier transform operation is carried out；
The corresponding sub-carrier positions of data and FFT relation as follows：Assume that corresponding k-th son of data is carried
The center frequency point of ripple is fk, the initial frequency of system bandwidth is f0, then the FFT of the corresponding subcarrier of the data
Position is (fk-f0)/ΔfO；
3) Cyclic Prefix is added to the data after IFFT, if the length of Cyclic Prefix is NcpIndividual sampling
Point, by last N in the data after IFFTcpIndividual sampled point is copied to before the data；
4) concurrently to 2048 modulation symbols, which is carried out using the linear convolution wave filter that length is 1
Subcarrier is filtered；
5) parallel serial conversion is carried out to 2048 modulation symbols；
6) subband signal filtering is carried out to the serial data after parallel serial conversion, wave filter can be root liter
Cosine or the finite length impulse wave filter based on Hamming window, filter length are 512.
Base station is handled as follows process according to above-mentioned contoured configuration table, the subband data to user 2：
1) serioparallel exchange is carried out first to the data after 2 coded modulation of user, the parallel data in 8 tunnels is obtained,
Include 80 parallel modulation symbols in per circuit-switched data again, i.e. the 8 tunnel sequence is finally modulated onto 8
Transmit on subsymbol, each subsymbol includes 80 subcarriers on frequency domain；
2) corresponding sub-carrier positions are put into 80 parallel modulation symbol parallel datas, other subcarriers
Position filling 0, then carries out 256 points of inverse fast Fourier transform operation；
The corresponding sub-carrier positions of data and FFT relation as follows：Assume that corresponding k-th son of data is carried
The center frequency point of ripple is fk, the initial frequency of system bandwidth is f0, then the FFT of the corresponding subcarrier of the data
Position is (fk-f0)/ΔfO；
3) 256 parallel circuit-switched data are carried out piecemeal, is 1 data per 8 group of 256 channel parallel data stream
Block.
4) to the 256 channel parallel data blocks that each length is 8, respectively using length for 256*8 circulation
Convolution filter carries out subcarrier filtering.I-th (i=1,2 ..., 256) individual subcarrier filters coefficient is
gi=[gi,gi+256,...,gi+256×7]T, wherein giFor ptototype filter g=[gi,gi+256,...,gi+256×7]TIn i-th yuan
Element, the length of ptototype filter g is 2048 points, can be raised cosine or root raised cosine filter；
5) to step 4) in the data block of each 8*256 of output carry out parallel serial conversion, obtain for length be
2048 serial data；
6) serial data to obtaining, plus Cyclic Prefix, if the length of Cyclic Prefix is NcpIndividual sampled point,
By step 2) in data last NcpIndividual sampled point, copies to step 5) in before output data.
7) by the serial data of multiple data blocks according to data block order Serial output.
Two user's subband datas are carried out after above-mentioned process, by the OFDM waveform signal of user 1 and use
The superposition of the GFDM waveform signal at family 2 is used as baseband waveform signal output.
Based on identical technology design, the embodiment of the present invention additionally provides a kind of signal processing apparatus.
Referring to Fig. 4, it is signal processing apparatus schematic diagram provided in an embodiment of the present invention, the device includes：
Determining module 401：For determining N number of subband of data waiting for transmission occupancy, and each subband pair
The contoured configuration parameter that answers, N are the integer more than 1；
Tilde modulation module 402, the quantity of the subband waveform processing module is N, the i-th subband ripple
Shape processing module is used for according to the corresponding contoured configuration parameter of the i-th subband, to number waiting for transmission on the i-th subband
According to tilde modulation is carried out, N number of subband waveform is obtained；Wherein, 1≤i≤N；
Waveform aggregation module 403：N number of subband waveform is polymerized, is formed baseband waveform signal.
Contoured configuration parameter list acquired in above-mentioned determining module, including the contoured configuration parameter of multiple waveforms；
Target waveform is each corresponded to according to N number of subband, determines the corresponding contoured configuration parameter of each subband.One
The corresponding contoured configuration parameter of individual subband include following in one or more combination：
Modulation system, the modulation system include QAM or OQAM；
Subband bandwidth；
Subcarrier spacing；
Effective subcarrier number that one subband includes；
Subcarrier filters parameter；
CP length；
Subband signal filter parameter；
The subsymbol number included in tilde.
Above-mentioned tilde modulation module also includes：
Serioparallel exchange unit：For obtaining corresponding first serial sequence of the i-th subband, by first serial
Sequence carries out serioparallel exchange, obtains M road sequence, includes K modulation symbol per road sequence；Wherein, K
The quantity of the effective subcarrier included for first subband, M are the quantity of subsymbol, and K and M is big
In or integer equal to 1；
Fast Fourier Transform (FFT) IFFT unit：For concurrently carrying out IFFT to M road sequence, obtain
M road sequence, includes Q modulation symbol per road sequence, and wherein, Q is the size of IFFT；
Q subcarrier filter unit：The Q subcarrier filter unit executed in parallel, j-th subcarrier
Filter unit is used for carrying out subcarrier filtering to j-th subcarrier in the M road sequence after IFFT, obtains
Q road sequence, Q road sequence Zhong Mei road sequence include L subsymbol, L be more than or equal to 1
Integer；Wherein, 1≤j≤K；
Parallel serial conversion unit：For parallel serial conversion being carried out to Q road sequence, obtain the second serial sequence,
Second serial sequence includes the first via sequence being sequentially connected in series to Q road sequence.
In above-mentioned IFFT unit, the size of IFFT isWhereinExpression rounds up, B
For target sub-band sub-carriers bandwidth, W is system bandwidth.
Preferably, before the IFFT unit concurrently carries out IFFT to M road sequence, add
Phase place pretreatment module, pre- for concurrently entering line phase to K modulation symbol in the sequence of the M road
Process.If adopting quadrature amplitude modulation QAM modulation to i-th subband, using the first coefficient to institute
State M road sequence and enter line phase pretreatment, the value of first coefficient is 1；If or to the described i-th son
Band is modulated using offset orthogonal Modulation and Amplitude Modulation OQAM, then M road sequence is carried out using the second coefficient
Phase place is pre-processed, and second coefficient is calculated according to below equation：Wherein
D=Lg- 1, LgRepresent the length of subcarrier filters Central Plains mode filter, 0≤m≤M-1,0≤k≤K-1.
Preferably, parallel serial conversion is carried out to Q road sequence in the parallel serial conversion unit, obtains the second string
After row sequence, subband signal filter unit is added, for subband signal being carried out to second serial sequence
Filtering.The use of length is the cyclic convolution wave filter of M, subband signal is carried out to second serial sequence
Filtering, obtains GFDM waveform；Or using length for P linear convolution wave filter, to described second
Serial sequence carries out subband signal filtering, obtains FBMC waveform, P for FBMC wave filter overlap because
Son；Or the use of length is the cyclic convolution wave filter of M+P-1, son is carried out to second serial sequence
Band signal is filtered, and obtains FBMC waveform, and wherein, the front P position in the M+P-1 is with length for P's
The overlap factor of linear convolution wave filter is identical, and remaining M-1 position is 0；Or using length be 1 linear
Wave filter or the cyclic convolution wave filter for length M, carry out subband signal to second serial sequence
Filtering, obtains UFMC waveform；Or using the linear filter that length is 1 or following for length M
Ring convolution filter, carries out subband signal filtering to second serial sequence, obtains OFDM waveform.
In the above embodiment of the present invention, the multiple subband signals for predefining participation waveform polymerization are corresponding
Contoured configuration parameter, according to contoured configuration parameter；Subband waveform process is carried out to each subband signal,
Including serial/parallel conversion, phase place pretreatment, inverse fast Fourier transform, subcarrier filtering, subband signal filtering
Etc. process so that more flexible to subband waveform processing procedures, both can be to the letter after QAM modulation
Number processed, it is also possible to process to carrying out the signal after OQAM modulation, can generate waveform is
The target sub-band waveform such as GFDM, FBMC, UFMC or OFDM；Finally all subband waveforms are entered
Row polymerization.Present invention achieves the polymerization of different sub-band waveform, can be while optimally supporting different business class
User's transmission of type, improves the efficiency of signal transmission.
The present invention is produced with reference to method according to embodiments of the present invention, equipment (system) and computer program
The flow chart of product and/or block diagram are describing.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or square frame and flow chart and/or the flow process in block diagram and/
Or the combination of square frame.These computer program instructions can be provided to all-purpose computer, special-purpose computer, embedded
The processor of formula processor or other programmable data processing device is to produce a machine so that by calculating
The instruction of the computing device of machine or other programmable data processing device is produced for realizing in flow chart one
The device of the function of specifying in individual flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory for working in a specific way so that be stored in the computer-readable memory
Instruction produce and include the manufacture of command device, the command device is realized in one flow process or multiple of flow chart
The function of specifying in one square frame of flow process and/or block diagram or multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing device, made
Obtain series of operation steps is executed on computer or other programmable devices to produce computer implemented place
Reason, the instruction so as to execute on computer or other programmable devices are provided for realizing in flow chart one
The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to include preferred embodiment and fall into being had altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (16)
1. a kind of signal processing method, it is characterised in that include：
Determine N number of subband that data waiting for transmission take, and the corresponding contoured configuration parameter of each subband,
N is the integer more than 1；
According to the corresponding contoured configuration parameter of each subband, respectively data waiting for transmission on each subband are carried out
Tilde is modulated, and obtains N number of subband waveform symbol；
N number of subband waveform symbol is polymerized, is formed baseband waveform signal.
2. the method for claim 1, it is characterised in that joined according to the corresponding waveform of subband
Parameter is put, tilde modulation is carried out to data waiting for transmission on the subband, including：
Obtain corresponding first serial sequence of the first subband；
First serial sequence is carried out serioparallel exchange, M road sequence is obtained, per road sequence comprising K
Modulation symbol；Wherein, K is the quantity of effective subcarrier that first subband includes, and M is subsymbol
Quantity, K and M are the integer more than or equal to 1；
Concurrently inverse fast Fourier transform IFFT is carried out to M road sequence, M road sequence is obtained, per
Road sequence includes Q modulation symbol, and wherein, Q is the size of IFFT；
Concurrently subcarrier filtering is carried out to the same subcarrier in the M road sequence after IFFT, obtain Q
Road sequence, Q road sequence Zhong Mei road sequence include L subsymbol, and L is whole more than or equal to 1
Number；
Parallel serial conversion is carried out to Q road sequence, the second serial sequence is obtained, in second serial sequence
Including the first via sequence that is sequentially connected in series to Q road sequence.
3. method as claimed in claim 2, it is characterised in that concurrently M road sequence is carried out
Before IFFT, also include：
Concurrently enter line phase pretreatment to K modulation symbol in the sequence of the M road, wherein：
If adopting quadrature amplitude modulation QAM modulation to first subband, using the first coefficient to described
M road sequence enters line phase pretreatment, and the value of first coefficient is 1；Or
If being modulated using offset orthogonal Modulation and Amplitude Modulation OQAM to first subband, using the second coefficient
Enter line phase pretreatment to M road sequence, second coefficient is calculated according to below equation：
Wherein, D=Lg- 1, LgRepresent subcarrier filters Central Plains mode filter
Length, 0≤m≤M-1,0≤k≤K-1.
4. method as claimed in claim 2, it is characterised in that carry out and go here and there change to Q road sequence
Change, after obtaining the second serial sequence, also include：
Subband signal filtering is carried out to second serial sequence.
5. method as claimed in claim 4, it is characterised in that son is carried out to second serial sequence
Band signal is filtered, including：
The use of length is the cyclic convolution wave filter of M, subband signal filter is carried out to second serial sequence
Ripple, obtains GFDM waveform；Or
The use of length is the linear convolution wave filter of P, subband signal filtering is carried out to second serial sequence,
FBMC waveform is obtained, P is the overlap factor of FBMC wave filter；Or
The use of length is the cyclic convolution wave filter of M+P-1, subband letter is carried out to second serial sequence
Number filtering, obtains FBMC waveform, and wherein, front P position in the M+P-1 is the linear of P with length
The overlap factor of convolution filter is identical, and remaining M-1 position is 0；Or
Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, to described
Two serial sequence carry out subband signal filtering, obtain UFMC waveform；Or
Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, to described
Two serial sequence carry out subband signal filtering, obtain OFDM waveform.
6. method as claimed in claim 2, it is characterised in that the size of IFFT is
WhereinExpression rounds up, and B is target sub-band sub-carriers bandwidth, and W is system bandwidth.
7. the method as any one of claim 1 to 6, it is characterised in that determine each subband
Corresponding contoured configuration parameter, including：
Contoured configuration parameter list is obtained, the contoured configuration parameter list includes the contoured configuration ginseng of multiple waveforms
Number；
Target waveform is each corresponded to according to N number of subband, determines the corresponding contoured configuration ginseng of each subband
Number.
8. method as claimed in claim 7, it is characterised in that the corresponding contoured configuration ginseng of subband
Number include following in one or more combine：
Modulation system, the modulation system include QAM or OQAM；
Subband bandwidth；
Subcarrier spacing；
Effective subcarrier number that one subband includes；
Subcarrier filters parameter；
CP length；
Subband signal filter parameter；
The subsymbol number included in tilde.
9. a kind of signal processing apparatus, it is characterised in that include：
Determining module：For determining N number of subband of data waiting for transmission occupancy, and each subband is corresponding
Contoured configuration parameter, N are the integer more than 1；
Tilde modulation module, the quantity of the subband waveform processing module is N, at the i-th subband waveform
Reason module is used for according to the corresponding contoured configuration parameter of the i-th subband, and data waiting for transmission on the i-th subband are entered
Row tilde is modulated, and obtains N number of subband waveform；Wherein, 1≤i≤N；
Waveform aggregation module：N number of subband waveform is polymerized, is formed baseband waveform signal.
10. device as claimed in claim 9, it is characterised in that the i-th subband waveform symbol-modulated
Module is specifically included：
Serioparallel exchange unit：For obtaining corresponding first serial sequence of the i-th subband, by first serial
Sequence carries out serioparallel exchange, obtains M road sequence, includes K modulation symbol per road sequence；Wherein, K
The quantity of the effective subcarrier included for first subband, M are the quantity of subsymbol, and K and M is big
In or integer equal to 1；
Fast Fourier Transform (FFT) IFFT unit：For concurrently carrying out IFFT to M road sequence, obtain
M road sequence, includes Q modulation symbol per road sequence, and wherein, Q is the size of IFFT；
Q subcarrier filter unit：The Q subcarrier filter unit executed in parallel, j-th subcarrier
Filter unit is used for carrying out subcarrier filtering to j-th subcarrier in the M road sequence after IFFT, obtains
Q road sequence, Q road sequence Zhong Mei road sequence include L subsymbol, L be more than or equal to 1
Integer；Wherein, 1≤j≤Q；
Parallel serial conversion unit：For parallel serial conversion being carried out to Q road sequence, obtain the second serial sequence,
Second serial sequence includes the first via sequence being sequentially connected in series to Q road sequence.
11. devices as claimed in claim 10, it is characterised in that also include：
Phase place pretreatment unit：For concurrently carrying out IFFT to M road sequence in the IFFT unit
Before, concurrently enter line phase pretreatment to K modulation symbol in the sequence of the M road；
If adopting quadrature amplitude modulation QAM modulation to i-th subband, using the first coefficient to described
M road sequence enters line phase pretreatment, and the value of first coefficient is 1；Or
If being modulated using offset orthogonal Modulation and Amplitude Modulation OQAM to i-th subband, using the second coefficient
Enter line phase pretreatment to M road sequence, second coefficient is calculated according to below equation：
Wherein D=Lg- 1, LgRepresent the length of subcarrier filters Central Plains mode filter
Degree, 0≤m≤M-1,0≤k≤K-1.
12. devices as claimed in claim 9, it is characterised in that also include：
Subband signal filter unit：For carrying out and going here and there change to Q road sequence in the parallel serial conversion unit
Change, after obtaining the second serial sequence, subband signal filtering is carried out to second serial sequence.
13. devices as claimed in claim 12, it is characterised in that the subband signal filter unit tool
Body is used for：
The use of length is the cyclic convolution wave filter of M, subband signal filter is carried out to second serial sequence
Ripple, obtains GFDM waveform；Or
The use of length is the linear convolution wave filter of P, subband signal filtering is carried out to second serial sequence,
FBMC waveform is obtained, P is the overlap factor of FBMC wave filter；Or
The use of length is the cyclic convolution wave filter of M+P-1, subband letter is carried out to second serial sequence
Number filtering, obtains FBMC waveform, and wherein, front P position in the M+P-1 is the linear of P with length
The overlap factor of convolution filter is identical, and remaining M-1 position is 0；Or
Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, to described
Two serial sequence carry out subband signal filtering, obtain UFMC waveform；Or
Using the linear filter that length is 1 or the cyclic convolution wave filter for length M, to described
Two serial sequence carry out subband signal filtering, obtain OFDM waveform.
14. devices as claimed in claim 10, it is characterised in that IFFT in the IFFT unit
Size isWhereinExpression rounds up, and B is target sub-band sub-carriers bandwidth, W
For system bandwidth.
Device in 15. such as claim 9 to 14 as described in any one, it is characterised in that the determination
Module, specifically for：
Contoured configuration parameter list is obtained, the contoured configuration parameter list includes the contoured configuration ginseng of multiple waveforms
Number；
Target waveform is each corresponded to according to N number of subband, determines the corresponding contoured configuration ginseng of each subband
Number.
16. devices as claimed in claim 15, it is characterised in that the corresponding contoured configuration of subband
Parameter include following in one or more combination：
Modulation system, the modulation system include QAM or OQAM；
Subband bandwidth；
Subcarrier spacing；
Effective subcarrier number that one subband includes；
Subcarrier filters parameter；
CP length；
Subband signal filter parameter；
The subsymbol number included in tilde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524832.8A CN106488579B (en) | 2015-08-24 | 2015-08-24 | A kind of signal processing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524832.8A CN106488579B (en) | 2015-08-24 | 2015-08-24 | A kind of signal processing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106488579A true CN106488579A (en) | 2017-03-08 |
| CN106488579B CN106488579B (en) | 2019-10-29 |
Family
ID=58233102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510524832.8A Active CN106488579B (en) | 2015-08-24 | 2015-08-24 | A kind of signal processing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106488579B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667549A (en) * | 2017-03-27 | 2018-10-16 | 中国移动通信有限公司研究院 | One parameter configuration method, device and base station |
| CN109962764A (en) * | 2017-12-26 | 2019-07-02 | 中国移动通信集团湖南有限公司 | A kind of FBMC module and the block transmission method based on FBMC module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145828A (en) * | 2006-09-11 | 2008-03-19 | 华为技术有限公司 | A data transmission method and device based on minimum coverage |
| CN104823402A (en) * | 2012-11-29 | 2015-08-05 | 交互数字专利控股公司 | Reduction of spectral leakage in OFDM system |
-
2015
- 2015-08-24 CN CN201510524832.8A patent/CN106488579B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145828A (en) * | 2006-09-11 | 2008-03-19 | 华为技术有限公司 | A data transmission method and device based on minimum coverage |
| CN104823402A (en) * | 2012-11-29 | 2015-08-05 | 交互数字专利控股公司 | Reduction of spectral leakage in OFDM system |
Non-Patent Citations (2)
| Title |
|---|
| ICCSZ: "深度解读华为5G空口新技术：F-OFDM和SCMA", 《HTTP://WWW.EEPW.COM.CN/ARTICLE/271583.HTM》 * |
| JAVAD ABDOLI，MING JIA，JIANGLEI MA: "Filtered OFDM: A new waveform for future wireless systems", 《IEEE》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667549A (en) * | 2017-03-27 | 2018-10-16 | 中国移动通信有限公司研究院 | One parameter configuration method, device and base station |
| CN109962764A (en) * | 2017-12-26 | 2019-07-02 | 中国移动通信集团湖南有限公司 | A kind of FBMC module and the block transmission method based on FBMC module |
| CN109962764B (en) * | 2017-12-26 | 2021-09-21 | 中国移动通信集团湖南有限公司 | FBMC module and packet transmission method based on FBMC module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106488579B (en) | 2019-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Michailow et al. | Generalized frequency division multiplexing: Analysis of an alternative multi-carrier technique for next generation cellular systems | |
| CN110447200B (en) | Method and device for transmitting DMRS | |
| CN105723672B (en) | The receiving/transmission method and device of modulated signal transmission in filter bank multi-carrier communication system | |
| US20140192925A1 (en) | Method of and apparatus for reducing papr in filter-bank multi-carrier system | |
| WO2013144897A2 (en) | Hybrid Multicarrier Technique | |
| CN106789761A (en) | Wireless local network data transmission method and device | |
| CN108270713A (en) | It is a kind of to use scene signals multiple access method and system more | |
| CN104883238A (en) | Multi-carrier time division multiplexing modulation/demodulation method and system | |
| CN106130946A (en) | A kind of biorthogonal frequency-division multiplex multi-carrier modulation/demodulation methods and system | |
| CN107733604A (en) | A kind of method and device of communication | |
| WO2018014815A1 (en) | Multicarrier system and data modulation and demodulation method and device for multicarrier system | |
| CN103297379A (en) | Time-varying orthogonal frequency division multiplexing (TV-OFDM) multi-carrier modulation system and modulation method | |
| CN106488579B (en) | A kind of signal processing method and device | |
| CN103379070A (en) | RE detection method and apparatus | |
| CN106413006B (en) | A kind of ofdm communication method and system of uniform subband superposition | |
| CN107438041B (en) | Method and device for sending signal and receiving signal | |
| CN103001905B (en) | The generation method of PRACH baseband signal and device | |
| CN107733830A (en) | Method, apparatus and system caused by a kind of multi-carrier signal | |
| WO2023284752A1 (en) | Data transmission method and apparatus, data modulation method and apparatus, electronic device, and storage medium | |
| CN109076045A (en) | Data processing method and device | |
| CN106656892B (en) | Method and device for transmitting data | |
| CN107204953B (en) | Blind frequency offset estimation method in CP-FBMC communication system | |
| CN101378373A (en) | Method and device for processing multi-carrier data | |
| CN108462665A (en) | A kind of UFMC sends the building method of signal waveform | |
| CN109067689A (en) | The amplitude limit method of PART in a kind of F-OFDM communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |