CN110300080A - A kind of signal processing method and device - Google Patents
A kind of signal processing method and device Download PDFInfo
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- CN110300080A CN110300080A CN201910641091.XA CN201910641091A CN110300080A CN 110300080 A CN110300080 A CN 110300080A CN 201910641091 A CN201910641091 A CN 201910641091A CN 110300080 A CN110300080 A CN 110300080A
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- signal
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- frequency
- side information
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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
- H04L27/2614—Peak power aspects
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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
- H04L27/2614—Peak power aspects
- H04L27/2621—Reduction thereof using phase offsets between subcarriers
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- Computer Networks & Wireless Communication (AREA)
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
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Abstract
Every one first frequency-region signal in multiple identical first frequency-region signals can be multiplied by a kind of signal processing method and device provided in an embodiment of the present invention, transmitting terminal with corresponding phase information sequence, obtain corresponding second frequency-region signal.According to the corresponding relationship of preset phase information sequence and side information sequence, the corresponding side information sequence of second frequency-region signal is determined.According to the corresponding side information sequence of each second frequency-region signal, each second frequency-region signal is handled, multiple time-domain signals are obtained, the smallest target time-domain signal of peak-to-average force ratio is sent to receiving end.After receiving end obtains the target time-domain signal that transmitting terminal is sent, the corresponding phase information sequence of target time-domain signal can be determined according to the amplitudes of the multiple complex signals for including in the corresponding frequency-region signal of target time-domain signal, the corresponding relationship of preset phase information sequence and side information sequence.Based on above-mentioned processing, the waste of bandwidth resources can reduce.
Description
Technical field
The present invention relates to wireless communication technology fields, more particularly to a kind of signal processing method and device.
Background technique
OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) technology conduct
One wireless communication transmission technique, it is extensive in the systems such as high definition television, WLAN and digital video broadcasting
Using.
Using the communication system of OFDM technology, transmitting terminal can be modulated signal to be transmitted, obtain signal to be transmitted
Multiple complex signals are formed a frequency-region signal by corresponding multiple complex signals, which passes through IFFT (Inverse Fast
Fourier Transform, inverse fast Fourier transform) obtain a time-domain signal.Since the frequency-region signal is by multiple letter in replys
Number composition, when, there are the identical time multiplexed signal of phase, the waveform of the identical complex signal of phase can generate folded in multiple complex signal
Add, cause the frequency-region signal that can generate higher instantaneous peak value, after IFFT, obtained time-domain signal can exist higher
Peak-to-average force ratio.If the peak-to-average force ratio of the time-domain signal of transmission is excessively high, the time-domain signal may be generated non-linear in transmission process
Distortion, causes receiving end after receiving the time-domain signal, possibly can not correctly decode the to be transmitted of transmitting terminal transmission
Signal.
In the prior art, in order to enable receiving end correctly decode transmitting terminal transmission signal to be transmitted, transmitting terminal
The corresponding frequency-region signal of the signal to be transmitted is replicated, multiple identical frequency-region signals is obtained, then, each frequency domain is believed
Number with corresponding phase information sequence be multiplied, obtain the different frequency-region signal of multiple phase informations and obtained after IFFT
The smallest time-domain signal of peak-to-average force ratio can be sent to receiving end in turn by the different time-domain signal of multiple peak-to-average force ratios.
In addition, transmitting terminal is in the smallest time-domain signal of transmission peak-to-average force ratio, it is also necessary to send corresponding phase to receiving end
The mark of information sequence transmits the mark and needs to occupy certain bandwidth, causes bandwidth resources waste.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of signal processing method, can reduce the waste of bandwidth resources.Tool
Body technique scheme is as follows:
In a first aspect, in order to achieve the above object, the embodiment of the invention provides a kind of signal processing method, the methods
It further include receiving end in the ofdm system applied to the transmitting terminal in orthogonal frequency division multiplex OFDM system, which comprises
The corresponding frequency-region signal of signal to be transmitted is replicated, identical first frequency-region signal of the first quantity is obtained,
Wherein, every one first frequency-region signal includes multiple complex signals；
For every one first frequency-region signal, which is multiplied with corresponding phase information sequence, is somebody's turn to do
Corresponding second frequency-region signal of first frequency-region signal；
According to the corresponding relationship of preset phase information sequence and side information sequence, determining and first frequency-region signal pair
The corresponding side information sequence of the phase information sequence answered, as the first side information sequence, wherein the side information sequence
It arranges for carrying out amplitude adjustment to the complex signal for including in frequency-region signal；
It is more to include in corresponding second frequency-region signal of first frequency-region signal according to the first side information sequence
The amplitude of a complex signal is adjusted, and obtains corresponding third frequency-region signal；
Inverse fast Fourier transform is carried out to obtained the first quantity third frequency-region signal respectively, obtains described
One quantity time-domain signal；
The smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal is sent to the receiving end, peak-to-average force ratio
The smallest time-domain signal is as target time-domain signal, so that the receiving end is believed according to the corresponding frequency domain of the target time-domain signal
The amplitude for the multiple complex signals for including in number and the corresponding relationship of the phase information sequence and side information sequence determine
The corresponding phase information sequence of the target time-domain signal.
It optionally, include multiple binary numerals, and the multiple binary numeral in the first side information sequence
It is corresponded with the complex signal for including in second frequency-region signal；
It is described according to the first side information sequence, to including in corresponding second frequency-region signal of first frequency-region signal
The amplitudes of multiple complex signals be adjusted, obtain corresponding third frequency-region signal, comprising:
It is adjusted according to amplitude of first preset formula to the first complex signal for including in second frequency-region signal,
In, first complex signal be in second frequency-region signal with the binary numeral that includes in the first side information sequence
1 corresponding complex signal, first preset formula are as follows:
X indicates first complex signal, X′It indicates to carry out the complex signal that amplitude adjusts, E to first complex signal
Indicate the first default value.
Second aspect, in order to achieve the above object, the embodiment of the invention provides a kind of signal processing method, the methods
It further include transmitting terminal in the ofdm system applied to the receiving end in orthogonal frequency division multiplex OFDM system, which comprises
Obtain the target time-domain signal that the transmitting terminal is sent, wherein target time-domain signal is the transmitting terminal according to pre-
If phase information sequence and side information sequence corresponding relationship, identical first frequency domain of the first quantity to be transmitted is believed
The smallest time-domain signal of peak-to-average force ratio obtained after number being handled；
Fast Fourier Transform (FFT) is carried out to the target time-domain signal, obtains corresponding 4th frequency of the target time-domain signal
Domain signal；
According to the amplitude for the multiple complex signals for including in the 4th frequency-region signal, determination and the 4th frequency-region signal phase
Corresponding target side information sequence；
According to the corresponding relationship of preset phase information sequence and side information sequence, the determining and target side information
The corresponding target phase information sequence of sequence.
Optionally, the amplitude according to the multiple complex signals for including in the 4th frequency-region signal, it is determining with described the
The corresponding target side information sequence of four frequency-region signals, comprising:
For each complex signal for including in the 4th frequency-region signal, judge whether the amplitude of the complex signal is greater than second
Default value；
If the amplitude of the complex signal is greater than second default value, by 1 as in the second side information sequence with
The corresponding binary numeral of the complex signal；
If the amplitude of the complex signal is not more than second default value, the second side information sequence is used as by 0
Binary numeral corresponding with the complex signal in column, wherein second default value is to be determined according to the second preset formula,
Second preset formula are as follows:
M indicates that second default value, P indicate the amplitude before complex signal adjustment, and E indicates the first default value；
According to the second side information sequence, target side information sequence corresponding with the 4th frequency-region signal is determined
Column.
Optionally, described according to the second side information sequence, determine mesh corresponding with the 4th frequency-region signal
Mark side information sequence, comprising:
According to third preset formula, determine that the second side information sequence is similar to multiple default side information sequences
Degree, wherein the third preset formula are as follows:
D indicates the similarity of the second side information sequence Yu a default side information sequence, SnIndicate that this is default
The binary numeral for including in side information sequence, N indicate the binary numeral for including in the second side information sequence
Number, S′ nIndicate the binary numeral for including in the second side information sequence；
It is maximum standby with the similarity of the second side information sequence according in the multiple default side information sequence
Side information sequence is selected, determines target side information sequence corresponding with the 4th frequency-region signal.
Optionally, the phase according in the multiple default side information sequence, with the second side information sequence
Like maximum alternative side information sequence is spent, target side information sequence corresponding with the 4th frequency-region signal, packet are determined
It includes:
It is standby according to this for each alternative side information sequence when the alternative side information sequence is multiple
The binary numeral for including in side information sequence is selected, the corresponding alternative signal of the alternative side information sequence is generated；
According to the 4th preset formula, determine the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence it
Between energy differences, wherein the 4th preset formula are as follows:
K indicates the energy difference between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence
Value, YnIndicate the amplitude for the complex signal for including in the 4th frequency-region signal, ZnIndicate that the alternative side information sequence is corresponding standby
The amplitude for the complex signal for including in signal is selected, N indicates the total number for the complex signal for including in the 4th frequency-region signal；
By with alternative side information sequence corresponding to the smallest alternative signal of energy differences of the 4th frequency-region signal,
As target side information sequence corresponding with the 4th frequency-region signal.
Optionally, in the corresponding relationship according to preset phase information sequence and side information sequence, determining and institute
After stating the corresponding target phase information sequence of target side information sequence, the method also includes:
It is adjusted, is obtained according to amplitude of the 5th preset formula to the second complex signal for including in the 4th frequency-region signal
To the 5th frequency-region signal, wherein second complex signal be the 4th frequency-region signal in the target side information sequence
In include the corresponding complex signal of binary numeral 1, the 5th preset formula are as follows:
Y indicates second complex signal, Y′It indicates to carry out the complex signal that amplitude adjusts, E to second complex signal
Indicate the first default value；
The target phase information sequence is multiplied with the 5th frequency-region signal, it is corresponding to obtain the 5th frequency-region signal
The 6th frequency-region signal；
Processing is decoded to the 6th frequency-region signal, obtains the signal to be transmitted that the transmitting terminal is sent.
The third aspect, in order to achieve the above object, the embodiment of the invention provides a kind of signal processing apparatus, described devices
It further include receiving end in the ofdm system applied to the transmitting terminal in orthogonal frequency division multiplex OFDM system, described device includes:
It is identical to obtain the first quantity for replicating to the corresponding frequency-region signal of signal to be transmitted for replication module
First frequency-region signal, wherein every one first frequency-region signal includes multiple complex signals；
First processing module believes first frequency-region signal with corresponding phase for being directed to every one first frequency-region signal
It ceases sequence to be multiplied, obtains corresponding second frequency-region signal of first frequency-region signal；
Matching module is determined and is somebody's turn to do for the corresponding relationship according to preset phase information sequence and side information sequence
The corresponding side information sequence of the corresponding phase information sequence of first frequency-region signal, as the first side information sequence, wherein
The side information sequence is used to carry out amplitude adjustment to the complex signal for including in frequency-region signal；
Amplitude modulation module, for according to the first side information sequence, the second frequency domain corresponding to first frequency-region signal
The amplitude for the multiple complex signals for including in signal is adjusted, and obtains corresponding third frequency-region signal；
Second processing module, for carrying out fast Fourier respectively to obtained the first quantity third frequency-region signal
Inverse transformation obtains the first quantity time-domain signal；
Sending module, it is described for the smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal to be sent to
Receiving end, the smallest time-domain signal of peak-to-average force ratio is as target time-domain signal, so that the receiving end is believed according to the target time domain
The amplitude for the multiple complex signals for including in number corresponding frequency-region signal and the phase information sequence and side information sequence
Corresponding relationship determines the corresponding phase information sequence of the target time-domain signal.
It optionally, include multiple binary numerals, and the multiple binary numeral in the first side information sequence
It is corresponded with the complex signal for including in second frequency-region signal；
The amplitude modulation module, specifically for multiple to include in second frequency-region signal first according to the first preset formula
The amplitude of signal is adjusted, wherein first complex signal be second frequency-region signal in first side information
The corresponding complex signal of binary numeral 1 for including in sequence, first preset formula are as follows:
X indicates first complex signal, X′It indicates to carry out the complex signal that amplitude adjusts, E to first complex signal
Indicate the first default value.
Fourth aspect, in order to achieve the above object, the embodiment of the invention provides a kind of signal processing apparatus, described devices
It further include transmitting terminal in the ofdm system applied to the receiving end in orthogonal frequency division multiplex OFDM system, described device includes:
Module is obtained, the target time-domain signal sent for obtaining the transmitting terminal, wherein target time-domain signal is described
Transmitting terminal is identical to the first quantity to be transmitted according to the corresponding relationship of preset phase information sequence and side information sequence
The first frequency-region signal handled after the obtained the smallest time-domain signal of peak-to-average force ratio；
First processing module, for carrying out Fast Fourier Transform (FFT) to the target time-domain signal, when obtaining the target
Corresponding 4th frequency-region signal of domain signal；
Determining module, for the amplitude according to the multiple complex signals for including in the 4th frequency-region signal, it is determining with it is described
The corresponding target side information sequence of 4th frequency-region signal；
Matching module, for the corresponding relationship according to preset phase information sequence and side information sequence, determining and institute
State the corresponding target phase information sequence of target side information sequence.
Optionally, the determining module, comprising:
Judging submodule, for judging the complex signal for each complex signal for including in the 4th frequency-region signal
Whether amplitude is greater than the second default value；
First processing submodule, if the amplitude for the complex signal is greater than second default value, by 1 as the
Binary numeral corresponding with the complex signal in two side information sequences；
Second processing submodule, if the amplitude for the complex signal is not more than second default value, by 0 conduct
Binary numeral corresponding with the complex signal in the second side information sequence, wherein according to second default value
What the second preset formula determined, second preset formula are as follows:
M indicates that second default value, P indicate the amplitude before complex signal adjustment, and E indicates the first default value；
Submodule is determined, for according to the second side information sequence, determination to be corresponding with the 4th frequency-region signal
Target side information sequence.
Optionally, the determining submodule, comprising:
First determination unit, for determining that the second side information sequence is preset with multiple according to third preset formula
The similarity of side information sequence, wherein the third preset formula are as follows:
D indicates the similarity of the second side information sequence Yu a default side information sequence, SnIndicate that this is default
The binary numeral for including in side information sequence, N indicate the binary numeral for including in the second side information sequence
Number, S′ nIndicate the binary numeral for including in the second side information sequence；
Second determination unit, for according in the multiple default side information sequence, with the second side information sequence
The maximum alternative side information sequence of the similarity of column determines target side information sequence corresponding with the 4th frequency-region signal
Column.
Optionally, second determination unit, comprising:
Subelement is generated, for being believed for each alternative sideband when the alternative side information sequence is multiple
It ceases sequence and it is corresponding to be generated according to the binary numeral for including in the alternative side information sequence for the alternative side information sequence
Alternative signal；
First determines subelement, for determining the 4th frequency-region signal and the alternative side information according to the 4th preset formula
Energy differences between the corresponding alternative signal of sequence, wherein the 4th preset formula are as follows:
K indicates the energy difference between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence
Value, YnIndicate the amplitude for the complex signal for including in the 4th frequency-region signal, ZnIndicate that the alternative side information sequence is corresponding standby
The amplitude for the complex signal for including in signal is selected, N indicates the total number for the complex signal for including in the 4th frequency-region signal；
Second determine subelement, for by with corresponding to the smallest alternative signal of energy differences of the 4th frequency-region signal
Alternative side information sequence, as target side information sequence corresponding with the 4th frequency-region signal.
Optionally, described device further include:
Second processing module, for according to the 5th preset formula to the second complex signal for including in the 4th frequency-region signal
Amplitude be adjusted, obtain the 5th frequency-region signal, wherein second complex signal be the 4th frequency-region signal in it is described
The corresponding complex signal of binary numeral 1 for including in target side information sequence, the 5th preset formula are as follows:
Y indicates second complex signal, Y′It indicates to carry out the complex signal that amplitude adjusts, E to second complex signal
Indicate the first default value；
The target phase information sequence is multiplied with the 5th frequency-region signal, it is corresponding to obtain the 5th frequency-region signal
The 6th frequency-region signal；
Processing is decoded to the 6th frequency-region signal, obtains the signal to be transmitted that the transmitting terminal is sent.
In the another aspect that the present invention is implemented, in order to achieve the above object, the embodiment of the invention also provides a kind of electronics
Equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processor, communication interface are deposited
Reservoir completes mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes signal processing described in above-mentioned first aspect
Method and step.
In the another aspect that the present invention is implemented, in order to achieve the above object, the embodiment of the invention also provides a kind of electronics
Equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processor, communication interface are deposited
Reservoir completes mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes signal processing described in above-mentioned second aspect
Method and step.
At the another aspect that the present invention is implemented, the embodiment of the invention also provides a kind of computer readable storage medium, institutes
It states and is stored with instruction in computer readable storage medium, when run on a computer, so that computer executes above-mentioned first
The step of signal processing method described in aspect.
At the another aspect that the present invention is implemented, the embodiment of the invention also provides a kind of computer readable storage medium, institutes
It states and is stored with instruction in computer readable storage medium, when run on a computer, so that computer executes above-mentioned second
The step of signal processing method described in aspect.
At the another aspect that the present invention is implemented, the embodiment of the invention also provides a kind of, and the computer program comprising instruction is produced
Product, when run on a computer, so that computer executes signal processing method described in above-mentioned first aspect.
At the another aspect that the present invention is implemented, the embodiment of the invention also provides a kind of, and the computer program comprising instruction is produced
Product, when run on a computer, so that computer executes signal processing method described in above-mentioned second aspect.
A kind of signal processing method and device provided in an embodiment of the present invention, transmitting terminal can be by multiple identical first frequencies
Every one first frequency-region signal in the signal of domain is multiplied with corresponding phase information sequence, obtains corresponding second frequency-region signal.Root
According to the corresponding relationship of preset phase information sequence and side information sequence, the corresponding side information of the second frequency-region signal is determined
Sequence.According to the corresponding side information sequence of each second frequency-region signal, each second frequency-region signal is handled, when obtaining multiple
The smallest target time-domain signal of peak-to-average force ratio is sent to receiving end by domain signal.Receiving end obtains the target time domain that transmitting terminal is sent
It, can amplitude, preset phase according to the multiple complex signals for including in the corresponding frequency-region signal of target time-domain signal after signal
The corresponding relationship of information sequence and side information sequence determines the corresponding phase information sequence of target time-domain signal.
Based on above-mentioned processing, phase information sequence pass corresponding with side information sequence is all had in transmitting terminal and receiving end
System, transmitting terminal determines target time-domain signal according to the corresponding relationship, correspondingly, receiving end can be according to the corresponding relationship, really
The corresponding phase information sequence of the time-domain signal that sets the goal, that is, no need to send the mark of phase information sequence, receiving ends for transmitting terminal
Also it can determine the corresponding phase information sequence of target time-domain signal, in turn, can reduce the waste of bandwidth resources.
Certainly, implement any of the products of the present invention or method it is not absolutely required at the same reach all the above excellent
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of architecture diagram of ofdm system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 4 is a kind of structure chart of signal processing apparatus provided in an embodiment of the present invention；
Fig. 5 is a kind of structure chart of signal processing apparatus provided in an embodiment of the present invention；
Fig. 6 is the structure chart of a kind of electronic equipment provided in an embodiment of the present invention；
Fig. 7 is the structure chart of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of signal processing method and device, the transmitting terminal in ofdm system can be applied to
The receiving end and.
Referring to Fig. 1, Fig. 1 is a kind of architecture diagram of ofdm system provided in an embodiment of the present invention, is a kind of possible application
Scene.The ofdm system includes: transmitting terminal and receiving end.
Transmitting terminal can replicate the corresponding frequency-region signal of signal to be transmitted, obtain multiple identical frequency-region signals
Each first frequency-region signal is multiplied with corresponding phase information sequence respectively, obtains each first by (i.e. the first frequency-region signal)
The corresponding frequency-region signal of frequency-region signal (i.e. the second frequency-region signal), according to preset phase information sequence and side information sequence
Corresponding relationship determines the corresponding side information sequence of each second frequency-region signal, in turn, according to the corresponding side of each second frequency-region signal
Information sequence is adjusted the amplitude for the complex signal for including in each second frequency-region signal, obtains each second frequency-region signal pair
The frequency-region signal (i.e. third frequency-region signal) answered, and inverse fast Fourier transform processing is carried out to each third frequency-region signal, it obtains
Multiple time-domain signals, it is then possible to which the smallest time-domain signal of peak-to-average force ratio (i.e. target time-domain signal) is sent to receiving end.
After receiving end receives the target time-domain signal of transmitting terminal transmission, target time-domain signal can be carried out in quick Fu
Leaf transformation obtains the corresponding frequency-region signal of target time-domain signal (i.e. the 4th frequency-region signal), in turn, according in the 4th frequency-region signal
The amplitude for the multiple complex signals for including determines the corresponding side information sequence of target time-domain signal, it is then possible to according to preset
The corresponding relationship of phase information sequence and side information sequence determines the corresponding phase information sequence of target time-domain signal.
As it can be seen that all having the corresponding relationship of phase information sequence Yu side information sequence in transmitting terminal and receiving end, send
Target time-domain signal is determined according to the corresponding relationship in end, correspondingly, receiving end can be according to the corresponding relationship, when determining target
The corresponding phase information sequence of domain signal, that is, transmitting terminal no need to send the marks of phase information sequence, receiving end also can be true
The corresponding phase information sequence of the time-domain signal that sets the goal can reduce the waste of bandwidth resources in turn.
Referring to fig. 2, Fig. 2 is a kind of flow chart of signal processing method provided in an embodiment of the present invention, and this method is applied to
Transmitting terminal in ofdm system further includes receiving end in the ofdm system, may comprise steps of:
S201: replicating the corresponding frequency-region signal of signal to be transmitted, obtains identical first frequency domain of the first quantity
Signal.
Wherein, every one first frequency-region signal includes multiple complex signals.One signal to be transmitted may include multiple two
Binary signal.First quantity can be rule of thumb arranged by technical staff, and the first quantity can be 16, and the first quantity may be
64, but it is not limited to this.
Transmitting terminal can be modulated the binary signal for including in signal to be transmitted, and it is corresponding to obtain signal to be transmitted
Multiple complex signals carry out serial to parallel conversion processing to multiple complex signals, obtain the corresponding frequency-region signal of signal to be transmitted.In turn, it sends out
Sending end can replicate the corresponding frequency-region signal of signal to be transmitted, obtain multiple identical frequency-region signal (i.e. the first frequency domains
Signal).
In a kind of implementation, transmitting terminal can use QPSK (Quadrature Phase Shift Keying, four phases
Phase shift keyed signal) modulation system, 2 binary signals for including in signal to be transmitted are modulated, a letter in reply is obtained
Number, in turn, the corresponding multiple complex signals of available signal to be transmitted.
In another implementation, in order to save bandwidth resources, transmitting terminal can use 8PSK (8Phase Shift
Keying, 8 phase-shift keyings) modulation system, 3 binary signals for including in signal to be transmitted are modulated, obtain one
Complex signal, in turn, the corresponding multiple complex signals of available signal to be transmitted.
Illustratively, the first quantity is 3, and the modulation system that transmitting terminal uses is QPSK modulation.Current signal to be transmitted
It include: 0,0,0,1,1,0,1,1, transmitting terminal can be modulated 0 and 0, obtain complex signal A, be modulated to 0 and 1, obtain
Complex signal B, similarly, the corresponding complex signal D of available 1 and 0 corresponding complex signal C, 1 and 1.Then, transmitting terminal can to
Multiple complex signals (i.e. A, B, C, D) for arriving carry out serial to parallel conversion processing, obtain the corresponding frequency domain signal X of signal to be transmitted=[A,
B, C, D].In turn, transmitting terminal replicates the frequency-region signal, obtains 3 identical frequency-region signals: X1=[A, B, C, D], X2
=[A, B, C, D], X3=[A, B, C, D].
S202: it is directed to every one first frequency-region signal, which is multiplied with corresponding phase information sequence, is obtained
To corresponding second frequency-region signal of first frequency-region signal.
Transmitting terminal can have phase information matrix, each phase information sequence in the phase information matrix, with first
The first frequency-region signal of quantity corresponds.
In a kind of implementation, in order to be effectively reduced the peak-to-average force ratio of the corresponding time-domain signal of signal to be transmitted, phase letter
Ceasing matrix can be Hadamard (Hadamard) matrix.
In turn, transmitting terminal can by the first quantity the first frequency-region signal, respectively with corresponding phase information sequence
It is multiplied, obtains corresponding frequency-region signal (i.e. the second frequency-region signal).
Illustratively, the first quantity is 4, and the first frequency-region signal includes: X1=[A, B, C, D], X2=[A, B, C, D], X3
=[A, B, C, D], X4=[A, B, C, D], corresponding phase information sequence are respectively as follows: H1=[1,1,1,1], H2=[1, -1,
1, -1], the first frequency domain signal X 1, then be multiplied by H3=[1,1, -1, -1], H4=[1, -1, -1,1] with phase information sequence H1,
Obtain the corresponding second frequency domain signal X 11=[A, B, C, D] of X1.Similarly, the corresponding second frequency domain signal X 22=of available X2
[A ,-B, C ,-D], the corresponding second frequency domain signal X 33=[A, B ,-C ,-D] of X3, the corresponding second frequency domain signal X 44=of X4
[A ,-B ,-C, D].
S203: according to the corresponding relationship of preset phase information sequence and side information sequence, determining and first frequency domain
The corresponding side information sequence of the corresponding phase information sequence of signal, as the first side information sequence.
Wherein, side information sequence is used to carry out amplitude adjustment to the complex signal for including in frequency-region signal.Transmitting terminal has
The corresponding relationship of phase information sequence and side information sequence.
For example, transmitting terminal has and the one-to-one side information sequence of phase information sequence.Phase information sequence is 5
A, then transmitting terminal can be generated and the one-to-one side information sequence of 5 phase information sequences.In a kind of implementation, hair
Sending end can first generate first side information sequence, then the binary numeral for including in first side information sequence is followed
Ring shifts to obtain other multiple side information sequences.
In addition, in order to allow receiving end correctly to decode signal to be transmitted, transmitting terminal is generating side information sequence
When, can be set and be up to the corresponding numerical value in an identical position in every two side information sequence is 1, it is determined that first
The method for the binary numeral for including in side information sequence can be with are as follows: continuous 0 number is incremented by between every two 1, and most
Continuous 0 number behind the latter 1, than this, the number of the last one 1 front continuous 0 is more.
Illustratively, phase information sequence includes: H1, H2, H3, H4, H5, H6, H7, H8, then first side information sequence
Column can be with are as follows: the binary numeral in S1 is to the right 1 available S2 of cyclic shift by S1=[0,1,0,0,1,0,0,0]
=[0,0,1,0,0,1,0,0]；By the binary numeral in S1 be to the right 2 available S3=of cyclic shift [0,0,0,1,
0,0,1,0], and so on, available S4=[0,0,0,0,1,0,0,1], S5=[1,0,0,0,0,1,0,0], S6=[0,
1,0,0,0,0,1,0], [0,0,1,0,0,0,0,1] S7=, S8=[1,0,0,1,0,0,0,0].
Also, side information sequence S1 is corresponding with phase information sequence H1；Side information sequence S2 and phase information sequence
It is corresponding to arrange H2, and so on, side information sequence and phase information sequence correspond.If a certain second frequency-region signal pair
The phase information sequence answered is H1, then the corresponding side information sequence of second frequency-region signal is S1 (i.e. the first side information sequence
Column).
S204: according to the first side information sequence, to including in corresponding second frequency-region signal of first frequency-region signal
The amplitude of multiple complex signals is adjusted, and obtains corresponding third frequency-region signal.
It include multiple binary numerals, and multiple binary system in the corresponding first side information sequence of second frequency-region signal
The complex signal for including in numerical value, with the second frequency-region signal corresponds.Transmitting terminal can be according to the first preset formula, the second frequency domain
The binary numeral for including in the corresponding first side information sequence of signal, to the first complex signal for including in the second frequency-region signal
Amplitude be adjusted.
Wherein, the first complex signal be in the second frequency-region signal with the binary numeral 1 that includes in the first side information sequence
Corresponding complex signal, the first preset formula are as follows:
X indicates the first complex signal, X′It indicates to carry out the first complex signal the complex signal that amplitude adjusts, E indicates first
Default value.When carrying out amplitude adjustment to the first complex signal X according to formula (1), take absolute value to the first complex signal X (i.e. | X
|) processing, the amplitude of the first complex signal X can be increased, so that receiving end can detecte out the complex signal of amplitude adjustment.In addition,
According to | | X |+E | after the amplitude for increasing by the first complex signal, multiplied byThe complex signal and first that amplitude can be made to adjust
The phase of complex signal is consistent.
First default value can be rule of thumb arranged by technical staff, for example, the first default value can be for letter in reply
The numerical value that takes absolute value of amplitude before number adjustment, but it is not limited to this.Illustratively, the first default value can be E, if
A certain second frequency-region signal be X=[A ,-B], determine the corresponding side information sequence of second frequency domain signal X be S=[0,
1], then the complex signal B for including in second frequency domain signal X be the first complex signal, transmitting terminal can according to formula (1) to this second
The complex signal B for including in frequency domain signal X carries out amplitude adjustment, obtained complex signal are as follows:
In turn, available corresponding frequency-region signal of second frequency-region signal (i.e. third frequency-region signal) are as follows: X′=[A,
B′]。
S205: inverse fast Fourier transform is carried out to the first obtained quantity third frequency-region signal respectively, obtains first
Quantity time-domain signal.
To the method that each third frequency-region signal carries out IFFT, with the method class for carrying out IFFT to frequency-region signal in the related technology
Seemingly, details are not described herein again.
S206: the smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal is sent to receiving end, peak-to-average force ratio is most
Small time-domain signal is as target time-domain signal, so that receiving end includes according in the corresponding frequency-region signal of target time-domain signal
The amplitude and phase information sequence of multiple complex signals and the corresponding relationship of side information sequence, determine target time-domain signal pair
The phase information sequence answered.
After carrying out IFFT to each third frequency-region signal and obtaining multiple time-domain signals, transmitting terminal can be by peak-to-average force ratio minimum
Time-domain signal be sent to receiving end, correspondingly, receiving end can include according in the corresponding frequency-region signal of the time-domain signal
The amplitude and phase information sequence of multiple complex signals and the corresponding relationship of side information sequence determine that the time-domain signal is corresponding
Phase information sequence, the processing method of receiving end will be discussed in detail in subsequent embodiment.
Based on above-mentioned processing, phase information sequence pass corresponding with side information sequence is all had in transmitting terminal and receiving end
System, transmitting terminal determines target time-domain signal according to the corresponding relationship, correspondingly, receiving end can be according to the corresponding relationship, really
The corresponding phase information sequence of the time-domain signal that sets the goal, that is, no need to send the mark of phase information sequence, receiving ends for transmitting terminal
Also it can determine the corresponding phase information sequence of target time-domain signal, in turn, can reduce the waste of bandwidth resources.
Referring to Fig. 3, Fig. 3 is a kind of flow chart of signal processing method provided in an embodiment of the present invention, and this method is applied to
Receiving end in ofdm system further includes transmitting terminal in the ofdm system, may comprise steps of:
S301: the target time-domain signal that transmitting terminal is sent is obtained.
Wherein, target time-domain signal is that transmitting terminal is closed according to preset phase information sequence is corresponding with side information sequence
System, the smallest time domain of peak-to-average force ratio obtained after handling identical first frequency-region signal of the first quantity to be transmitted are believed
Number.The processing method of transmitting terminal may refer to being discussed in detail in above-described embodiment.
S302: Fast Fourier Transform (FFT) is carried out to target time-domain signal, obtains corresponding 4th frequency domain of target time-domain signal
Signal.
After receiving end receives target time-domain signal, FFT (Fast Fourier can be carried out to target time-domain signal
Transformation, Fast Fourier Transform (FFT)), obtain the corresponding frequency-region signal of target time-domain signal (i.e. the 4th frequency domain letter
Number).
To target time-domain signal carry out FFT method, in the related technology to time-domain signal carry out the method for FFT it is similar,
Details are not described herein again.
S303: according to the amplitude for the multiple complex signals for including in the 4th frequency-region signal, determination is opposite with the 4th frequency-region signal
The target side information sequence answered.
In a kind of implementation, for each complex signal for including in the 4th frequency-region signal, the amplitude of the complex signal is judged
Whether the second default value is greater than.If the amplitude of the complex signal is greater than the second default value, the second side information is used as by 1
Binary numeral corresponding with the complex signal in sequence；Otherwise, then 0 is used as in the second side information sequence and the complex signal pair
The binary numeral answered.
Wherein, the second default value is to be determined according to the second preset formula, the second preset formula are as follows:
M indicates that the second default value, P indicate the amplitude before complex signal adjustment, and E indicates the first default value.First
Default value can be rule of thumb arranged by technical staff.
Illustratively, the first default value can be 4, the amplitude before the complex signal adjustment for including in the 4th frequency-region signal
It is 2, then is 3 according to the second default value m that formula (2) determine.
If the 4th frequency-region signal is X=[A ,-B], receiving end may determine that the complex signal A for including in the 4th frequency-region signal
Amplitude whether be greater than the second default value (i.e. 3).If it is, in the second side information sequence with wrapped in the 4th frequency-region signal
The corresponding binary numeral of complex signal A contained is 1；Otherwise, then in the second side information sequence with include in the 4th frequency-region signal
The corresponding binary numeral of complex signal A be 0.
Similarly, receiving end can determine the second side information according to the amplitude for the complex signal B for including in the 4th frequency-region signal
Binary numeral corresponding with the complex signal B for including in the 4th frequency-region signal in sequence.In turn, receiving end can determine the 4th frequency
The corresponding second side information sequence of domain signal.It is then possible to according to the second side information sequence, determining and the 4th frequency-region signal
Corresponding target side information sequence.
In a kind of implementation, receiving end can according to third preset formula, determine the second side information sequence with it is multiple
The similarity of default side information sequence, wherein third preset formula are as follows:
D indicates the similarity of the second side information sequence and a default side information sequence, SnIndicate the default sideband
The binary numeral for including in information sequence, N indicate the number for the binary numeral for including in the second side information sequence, S 'n
Indicate the binary numeral for including in the second side information sequence.
Illustratively, preset side information sequence include: S1=[0,1,0,0], S2=[0,0,1,0], S3=[0,0,0,
1], [1,0,0,0] S4=, if the second side information sequence be S '=[1,0,1,0], then receiving end can according to formula (3),
The similarity D1=0 of the second side information sequence S ' Yu default side information sequence S1, the second side information sequence is calculated
The similarity D2=1, the second side information sequence S ' of S ' and default side information sequence S2 and default side information sequence S3's
The similarity D4=1 of similarity D3=0, the second side information sequence S ' and default side information sequence S4.
It is then possible to according in multiple default side information sequences, it is maximum with the similarity of the second side information sequence
Side information sequence (i.e. alternative side information sequence) determines target side information sequence corresponding with the 4th frequency-region signal.
In a kind of implementation, when alternative side information sequence is one, receiving end can be directly by the alternative sideband
Information sequence, as target side information sequence corresponding with the 4th frequency-region signal.
In another implementation, when alternative side information sequence is multiple, for each alternative side information sequence,
Receiving end it is corresponding can to generate the alternative side information sequence according to the binary numeral for including in the alternative side information sequence
Alternative signal.
For each complex signal for including in alternative signal, if the complex signal alternative sideband corresponding with the alternative signal
0 in information sequence is corresponding, then the amplitude that the complex signal is arranged is that transmitting terminal is answered what signal to be transmitted was modulated
The amplitude of signal；Otherwise, the amplitude that the complex signal is arranged is complex signal that transmitting terminal is modulated signal to be transmitted
Amplitude and the first default value and value.
Illustratively, the first default value is E, and transmitting terminal is X to the complex signal that signal to be transmitted is modulated, standby
Selecting side information sequence includes: S1=[0,0,1,0], S2=[1,0,0,0], then alternative side information sequence S1 is corresponding alternative
Signal can for Z1=[| X |, | X |, | X |+E, | X |], the corresponding alternative signal of alternative side information sequence S2 can be Z2=
[| X |+E, | X |, | X |, | X |].
It is then possible to determine that the 4th frequency-region signal is corresponding with the alternative side information sequence according to the 4th preset formula
Energy differences between alternative signal, wherein the 4th preset formula are as follows:
K indicates the energy differences between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence, Yn
Indicate the amplitude for the complex signal for including in the 4th frequency-region signal, ZnIt indicates in the corresponding alternative signal of the alternative side information sequence
The amplitude for the complex signal for including, N indicate the total number for the complex signal for including in the 4th frequency-region signal.
It is then possible to by alternative side information corresponding to the smallest alternative signal of energy differences with the 4th frequency-region signal
Sequence, as target side information sequence corresponding with the 4th frequency-region signal.
Illustratively, the first default value can be 4, before the complex signal for including is adjusted in the 4th frequency-region signal
Amplitude can be 2, if the 4th frequency-region signal is Y=[A ,-B, C, D], the amplitude of complex signal A is 5, and the amplitude of complex signal-B is
The amplitude of 2, complex signal C are 3, and the amplitude of complex signal D is 3, alternative side information sequence are as follows: S1=[0,0,1,0], S2=[1,
0,0,0], then corresponding alternative signal are as follows: wrapped in Z1=[A, B, (C+4), D], Z2=[(A+4), B, C, D], alternative signal Z1
The amplitude of each complex signal contained is respectively as follows: 2,2,6,2, and the amplitude for each complex signal for including in alternative signal Z2 is respectively as follows: 6,2,
2,2.
Receiving end determines the energy differences K1=of the 4th frequency-region signal Y Yu alternative side information sequence Z1 according to formula (4)
53, the energy differences K2=21 with alternative side information sequence Z2.Then receiving end can be by alternative side information corresponding to Z2
Sequence (i.e. S2), as target side information sequence corresponding with the 4th frequency-region signal.
S304: determining to believe with target sideband according to the corresponding relationship of preset phase information sequence and side information sequence
Cease the corresponding target phase information sequence of sequence.
After determining the corresponding target side information sequence of the 4th frequency-region signal, receiving end can be according to preset phase
The corresponding relationship of information sequence and side information sequence determines target phase information sequence corresponding with target side information sequence
Column.
Illustratively, presetting side information sequence can be with are as follows: S1, S2, S3, S4, preset phase information sequence can be with are as follows:
H1, H2, H3, H4 preset side information sequence and preset phase information sequence and correspond, if it is determined that the 4th frequency-region signal
Corresponding target side information sequence is S2, then target phase information sequence corresponding with target side information sequence is H2.
Optionally, after step S304, method can be the following steps are included: according to the 5th preset formula to the 4th frequency
The amplitude for the second complex signal for including in the signal of domain is adjusted, and obtains the 5th frequency-region signal.
Wherein, the second complex signal be in the 4th frequency-region signal with the binary numeral 1 that includes in target side information sequence
Corresponding complex signal, the 5th preset formula are as follows:
Y indicates the second complex signal, and Y ' expression carries out the complex signal that amplitude adjusts to the second complex signal, and E indicates first
Default value is being write a letter in reply according to formula (5) second to make receiving end be correctly decoded out the signal to be transmitted of transmitting terminal transmission
When number Y carries out amplitude adjustment, take absolute value to the second complex signal Y (i.e. | Y |) processing, it can reduce the amplitude of the second complex signal Y.
In addition, according to | | Y |-E | after the amplitude for reducing the second complex signal, multiplied byThe complex signal that amplitude can be made to adjust
It is consistent with the phase of the second complex signal.
Target phase information sequence is multiplied with the 5th frequency-region signal, obtains the corresponding 6th frequency domain letter of the 5th frequency-region signal
Number.
Processing is decoded to the 6th frequency-region signal, obtains the signal to be transmitted of transmitting terminal transmission.
After determining target phase information sequence, receiving end can also be according to the corresponding target sideband of the 4th frequency-region signal
Information sequence, target phase information sequence are decoded processing to the 4th frequency-region signal, obtain the letter to be transmitted of transmitting terminal transmission
Number.
Illustratively, the first default value is E, if the 4th frequency-region signal is Y=[A ,-B, C ,-D], determining target
Side information sequence is S=[1,0,1,0], and corresponding target phase information sequence is H=[1, -1, -1,1].
The complex signal A and C for then including in the 4th frequency-region signal Y are the second complex signal, receiving end can according to formula (3) and
Target side information sequence S carries out amplitude tune to each second complex signal (i.e. A and C) for including in the 4th frequency-region signal Y respectively
It is whole, obtain complex signal:
In turn, corresponding frequency-region signal (i.e. the 5th frequency-region signal) is obtained are as follows: Y '=[A ' ,-B, C ' ,-D] is received in turn
Target phase information sequence H can be multiplied by end with the 5th frequency-region signal Y ', obtain corresponding frequency-region signal (i.e. the 6th frequency domain letter
Number) are as follows: Y "=[A ', B ,-C ' ,-D], then, receiving end can be decoded processing to the 6th frequency-region signal Y ", be sent
Hold the signal to be transmitted sent.
Based on above-mentioned processing, phase information sequence pass corresponding with side information sequence is all had in transmitting terminal and receiving end
System, transmitting terminal determines target time-domain signal according to the corresponding relationship, correspondingly, receiving end can be according to the corresponding relationship, really
The corresponding phase information sequence of the time-domain signal that sets the goal, that is, no need to send the mark of phase information sequence, receiving ends for transmitting terminal
Also it can determine the corresponding phase information sequence of target time-domain signal, in turn, can reduce the waste of bandwidth resources.
Corresponding with the embodiment of the method for Fig. 2, referring to fig. 4, Fig. 4 is a kind of signal processing device provided in an embodiment of the present invention
The structure chart set, described device are applied to the transmitting terminal in orthogonal frequency division multiplex OFDM system, further include in the ofdm system
Receiving end, described device include:
It is identical to obtain the first quantity for replicating to the corresponding frequency-region signal of signal to be transmitted for replication module 401
The first frequency-region signal, wherein every one first frequency-region signal includes multiple complex signals；
First processing module 402, for being directed to every one first frequency-region signal, by first frequency-region signal and corresponding phase
Information sequence is multiplied, and obtains corresponding second frequency-region signal of first frequency-region signal；
Matching module 403, for the corresponding relationship according to preset phase information sequence and side information sequence, determine with
The corresponding side information sequence of the corresponding phase information sequence of first frequency-region signal, as the first side information sequence,
In, the side information sequence is used to carry out amplitude adjustment to the complex signal in frequency-region signal；
Amplitude modulation module 404, for according to the first side information sequence, the second frequency corresponding to first frequency-region signal
The amplitude for the multiple complex signals for including in the signal of domain is adjusted, and obtains corresponding third frequency-region signal；
Second processing module 405, for carrying out quick Fu respectively to obtained the first quantity third frequency-region signal
In leaf inverse transformation, obtain the first quantity time-domain signal；
Sending module 406, for the smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal to be sent to
The receiving end, the smallest time-domain signal of peak-to-average force ratio is as target time-domain signal, when so that the receiving end is according to the target
The amplitude for the multiple complex signals for including in the corresponding frequency-region signal of domain signal and the phase information sequence and side information sequence
The corresponding relationship of column determines the corresponding phase information sequence of the target time-domain signal.
It optionally, include multiple binary numerals, and the multiple binary numeral in the first side information sequence
It is corresponded with the complex signal for including in second frequency-region signal；
The amplitude modulation module 404, specifically for according to the first preset formula to include in second frequency-region signal
The amplitude of one complex signal is adjusted, wherein first complex signal be second frequency-region signal in first sideband
The corresponding complex signal of binary numeral 1 for including in information sequence, first preset formula are as follows:
X indicates first complex signal, and X ' expression carries out the complex signal that amplitude adjusts, E to first complex signal
Indicate the first default value.
Corresponding with the embodiment of the method for Fig. 3, referring to Fig. 5, Fig. 5 is a kind of signal processing device provided in an embodiment of the present invention
The structure chart set, described device are applied to the receiving end in orthogonal frequency division multiplex OFDM system, further include in the ofdm system
Transmitting terminal, described device include:
Module 501 is obtained, the target time-domain signal sent for obtaining the transmitting terminal, wherein target time-domain signal is
The transmitting terminal is according to the corresponding relationship of preset phase information sequence and side information sequence, to the first quantity to be transmitted
The smallest time-domain signal of peak-to-average force ratio that identical first frequency-region signal obtains after being handled；
First processing module 502 obtains the target for carrying out Fast Fourier Transform (FFT) to the target time-domain signal
Corresponding 4th frequency-region signal of time-domain signal；
Determining module 503, for the amplitude according to the multiple complex signals for including in the 4th frequency-region signal, determining and institute
State the corresponding target side information sequence of the 4th frequency-region signal；
Matching module 504, for the corresponding relationship according to preset phase information sequence and side information sequence, determine with
The corresponding target phase information sequence of the target side information sequence.
Optionally, the determining module 503, comprising:
Judging submodule, for judging the complex signal for each complex signal for including in the 4th frequency-region signal
Whether amplitude is greater than the second default value；
First processing submodule, if the amplitude for the complex signal is greater than second default value, by 1 as the
Binary numeral corresponding with the complex signal in two side information sequences；
Second processing submodule, if the amplitude for the complex signal is not more than second default value, by 0 conduct
Binary numeral corresponding with the complex signal in the second side information sequence, wherein according to second default value
What the second preset formula determined, second preset formula are as follows:
M indicates that second default value, P indicate the amplitude before complex signal adjustment, and E indicates the first default value；
Submodule is determined, for according to the second side information sequence, determination to be corresponding with the 4th frequency-region signal
Target side information sequence.
Optionally, the determining submodule, comprising:
First determination unit, for determining that the second side information sequence is preset with multiple according to third preset formula
The similarity of side information sequence, wherein the third preset formula are as follows:
D indicates the similarity of the second side information sequence Yu a default side information sequence, SnIndicate that this is default
The binary numeral for including in side information sequence, N indicate the binary numeral for including in the second side information sequence
Number, S 'nIndicate the binary numeral for including in the second side information sequence；
Second determination unit, for according in the multiple default side information sequence, with the second side information sequence
The maximum alternative side information sequence of the similarity of column determines target side information sequence corresponding with the 4th frequency-region signal
Column.
Optionally, second determination unit, comprising:
Subelement is generated, for being believed for each alternative sideband when the alternative side information sequence is multiple
It ceases sequence and it is corresponding to be generated according to the binary numeral for including in the alternative side information sequence for the alternative side information sequence
Alternative signal；
First determines subelement, for determining the 4th frequency-region signal and the alternative side information according to the 4th preset formula
Energy differences between the corresponding alternative signal of sequence, wherein the 4th preset formula are as follows:
K indicates the energy difference between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence
Value, YnIndicate the amplitude for the complex signal for including in the 4th frequency-region signal, ZnIndicate that the alternative side information sequence is corresponding standby
The amplitude for the complex signal for including in signal is selected, N indicates the total number for the complex signal for including in the 4th frequency-region signal；
Second determine subelement, for by with corresponding to the smallest alternative signal of energy differences of the 4th frequency-region signal
Alternative side information sequence, as target side information sequence corresponding with the 4th frequency-region signal.
Optionally, described device further include:
Second processing module, for according to the 5th preset formula to the second complex signal for including in the 4th frequency-region signal
Amplitude be adjusted, obtain the 5th frequency-region signal, wherein second complex signal be the 4th frequency-region signal in it is described
The corresponding complex signal of binary numeral 1 for including in target side information sequence, the 5th preset formula are as follows:
Y indicates second complex signal, and Y ' expression carries out the complex signal that amplitude adjusts, E to second complex signal
Indicate the first default value；
The target phase information sequence is multiplied with the 5th frequency-region signal, it is corresponding to obtain the 5th frequency-region signal
The 6th frequency-region signal；
Processing is decoded to the 6th frequency-region signal, obtains the signal to be transmitted that the transmitting terminal is sent.
Referring to Fig. 6, Fig. 6 is the structure chart of a kind of electronic equipment provided in an embodiment of the present invention, including processor 601, logical
Believe interface 602, memory 603 and communication bus 604, wherein processor 601, communication interface 602, memory 603 pass through communication
Bus 604 completes mutual communication,
Memory 603, for storing computer program；
Processor 601 when for executing the program stored on memory 603, realizes following steps:
The corresponding frequency-region signal of signal to be transmitted is replicated, identical first frequency-region signal of the first quantity is obtained,
Wherein, every one first frequency-region signal includes multiple complex signals；
For every one first frequency-region signal, which is multiplied with corresponding phase information sequence, is somebody's turn to do
Corresponding second frequency-region signal of first frequency-region signal；
According to the corresponding relationship of preset phase information sequence and side information sequence, determining and first frequency-region signal pair
The corresponding side information sequence of the phase information sequence answered, as the first side information sequence, wherein the side information sequence
It arranges for carrying out amplitude adjustment to the complex signal for including in frequency-region signal；
It is more to include in corresponding second frequency-region signal of first frequency-region signal according to the first side information sequence
The amplitude of a complex signal is adjusted, and obtains corresponding third frequency-region signal；
Inverse fast Fourier transform is carried out to obtained the first quantity third frequency-region signal respectively, obtains described
One quantity time-domain signal；
The smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal is sent to the receiving end, peak-to-average force ratio
The smallest time-domain signal is as target time-domain signal, so that the receiving end is believed according to the corresponding frequency domain of the target time-domain signal
The amplitude for the multiple complex signals for including in number and the corresponding relationship of the phase information sequence and side information sequence determine
The corresponding phase information sequence of the target time-domain signal.
Referring to Fig. 7, Fig. 7 is the structure chart of a kind of electronic equipment provided in an embodiment of the present invention, including processor 701, logical
Believe interface 702, memory 703 and communication bus 704, wherein processor 701, communication interface 702, memory 703 pass through communication
Bus 704 completes mutual communication,
Memory 703, for storing computer program；
Processor 701 when for executing the program stored on memory 703, realizes following steps:
Obtain the target time-domain signal that the transmitting terminal is sent, wherein target time-domain signal is the transmitting terminal according to pre-
If phase information sequence and side information sequence corresponding relationship, identical first frequency domain of the first quantity to be transmitted is believed
The smallest time-domain signal of peak-to-average force ratio obtained after number being handled；
Fast Fourier Transform (FFT) is carried out to the target time-domain signal, obtains corresponding 4th frequency of the target time-domain signal
Domain signal；
According to the amplitude for the multiple complex signals for including in the 4th frequency-region signal, determination and the 4th frequency-region signal phase
Corresponding target side information sequence；
According to the corresponding relationship of preset phase information sequence and side information sequence, the determining and target side information
The corresponding target phase information sequence of sequence.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..For just
It is only indicated with a thick line in expression, figure, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, RAM), also may include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with computer program in storage medium, the computer program realizes any of the above-described be applied to when being executed by processor
The step of signal processing method of transmitting terminal in ofdm system.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with computer program in storage medium, the computer program realizes any of the above-described be applied to when being executed by processor
The step of signal processing method of receiving end in ofdm system.
In another embodiment provided by the invention, a kind of computer program product comprising instruction is additionally provided, when it
When running on computers, so that computer executes any of the above-described signal processing method applied to the transmitting terminal in ofdm system
The step of.
In another embodiment provided by the invention, a kind of computer program product comprising instruction is additionally provided, when it
When running on computers, so that computer executes any of the above-described signal processing method applied to the receiving end in ofdm system
The step of.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device,
For electronic equipment, computer readable storage medium and computer program product, since it is substantially similar to the method embodiment, institute
To be described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of signal processing method, which is characterized in that the method is applied to the transmission in orthogonal frequency division multiplex OFDM system
It holds, further includes receiving end in the ofdm system, which comprises
The corresponding frequency-region signal of signal to be transmitted is replicated, identical first frequency-region signal of the first quantity is obtained, wherein
Every one first frequency-region signal includes multiple complex signals；
For every one first frequency-region signal, which is multiplied with corresponding phase information sequence, obtain this first
Corresponding second frequency-region signal of frequency-region signal；
According to the corresponding relationship of preset phase information sequence and side information sequence, determination is corresponding with first frequency-region signal
The corresponding side information sequence of phase information sequence, as the first side information sequence, wherein the side information sequence is used
The complex signal for including in frequency-region signal carries out amplitude adjustment；
It is multiple multiple to include in corresponding second frequency-region signal of first frequency-region signal according to the first side information sequence
The amplitude of signal is adjusted, and obtains corresponding third frequency-region signal；
Inverse fast Fourier transform is carried out to obtained the first quantity third frequency-region signal respectively, obtains first number
Measure a time-domain signal；
The smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal is sent to the receiving end, peak-to-average force ratio is minimum
Time-domain signal as target time-domain signal so that the receiving end is according in the corresponding frequency-region signal of the target time-domain signal
The amplitude for the multiple complex signals for including and the corresponding relationship of the phase information sequence and side information sequence, determine described in
The corresponding phase information sequence of target time-domain signal.
2. the method according to claim 1, wherein including multiple binary systems in the first side information sequence
Numerical value, and the complex signal for including in the multiple binary numeral and second frequency-region signal corresponds；
It is described according to the first side information sequence, it is more to include in corresponding second frequency-region signal of first frequency-region signal
The amplitude of a complex signal is adjusted, and obtains corresponding third frequency-region signal, comprising:
It is adjusted according to amplitude of first preset formula to the first complex signal for including in second frequency-region signal, wherein
First complex signal is right with the binary numeral 1 that includes in second frequency-region signal in the first side information sequence
The complex signal answered, first preset formula are as follows:
X indicates first complex signal, and X ' expression carries out the complex signal that amplitude adjusts to first complex signal, and E is indicated
First default value.
3. a kind of signal processing method, which is characterized in that the method is applied to the reception in orthogonal frequency division multiplex OFDM system
It holds, further includes transmitting terminal in the ofdm system, which comprises
Obtain the target time-domain signal that the transmitting terminal is sent, wherein target time-domain signal is the transmitting terminal according to preset
The corresponding relationship of phase information sequence and side information sequence, to the first quantity to be transmitted identical first frequency-region signal into
The smallest time-domain signal of peak-to-average force ratio obtained after row processing；
Fast Fourier Transform (FFT) is carried out to the target time-domain signal, obtains the corresponding 4th frequency domain letter of the target time-domain signal
Number；
According to the amplitude for the multiple complex signals for including in the 4th frequency-region signal, determination is corresponding with the 4th frequency-region signal
Target side information sequence；
According to the corresponding relationship of preset phase information sequence and side information sequence, the determining and target side information sequence
Corresponding target phase information sequence.
4. according to the method described in claim 3, it is characterized in that, described multiple according to include in the 4th frequency-region signal
The amplitude of complex signal determines target side information sequence corresponding with the 4th frequency-region signal, comprising:
For each complex signal for including in the 4th frequency-region signal, it is default to judge whether the amplitude of the complex signal is greater than second
Numerical value；
If the amplitude of the complex signal is greater than second default value, 1 is answered as in the second side information sequence with this
The corresponding binary numeral of signal；
If the amplitude of the complex signal is not more than second default value, by 0 as in the second side information sequence
Binary numeral corresponding with the complex signal, wherein second default value is to be determined according to the second preset formula, described
Second preset formula are as follows:
M indicates that second default value, P indicate the amplitude before complex signal adjustment, and E indicates the first default value；
According to the second side information sequence, target side information sequence corresponding with the 4th frequency-region signal is determined.
5. method according to claim 4, which is characterized in that described according to the second side information sequence, determining and institute
State the corresponding target side information sequence of the 4th frequency-region signal, comprising:
According to third preset formula, the similarity of the second side information sequence Yu multiple default side information sequences is determined,
Wherein, the third preset formula are as follows:
D indicates the similarity of the second side information sequence Yu a default side information sequence, SnIndicate the default sideband letter
The binary numeral for including in breath sequence, N indicate the number for the binary numeral for including in the second side information sequence,
S′nIndicate the binary numeral for including in the second side information sequence；
According to the maximum alternative side of similarity in the multiple default side information sequence, with the second side information sequence
Information sequence determines target side information sequence corresponding with the 4th frequency-region signal.
6. according to the method described in claim 5, it is characterized in that, described according in the multiple default side information sequence,
With the maximum alternative side information sequence of the similarity of the second side information sequence, determination and the 4th frequency-region signal phase
Corresponding target side information sequence, comprising:
When the alternative side information sequence is multiple, for each alternative side information sequence, according to the alternative side
The binary numeral for including in information sequence generates the corresponding alternative signal of the alternative side information sequence；
According to the 4th preset formula, determine between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence
Energy differences, wherein the 4th preset formula are as follows:
K indicates the energy differences between the 4th frequency-region signal alternative signal corresponding with the alternative side information sequence, YnTable
Show the amplitude for the complex signal for including in the 4th frequency-region signal, ZnIndicate the corresponding alternative signal of the alternative side information sequence
In include complex signal amplitude, N indicates the total number for the complex signal for including in the 4th frequency-region signal；
By with alternative side information sequence corresponding to the smallest alternative signal of energy differences of the 4th frequency-region signal, as
Target side information sequence corresponding with the 4th frequency-region signal.
7. according to the method described in claim 3, it is characterized in that, being believed described according to preset phase information sequence and sideband
The corresponding relationship of sequence is ceased, it is described after determining target phase information sequence corresponding with the target side information sequence
Method further include:
It is adjusted according to amplitude of the 5th preset formula to the second complex signal for including in the 4th frequency-region signal, obtains
Five frequency-region signals, wherein second complex signal be the 4th frequency-region signal in wrapped in the target side information sequence
The corresponding complex signal of binary numeral 1 contained, the 5th preset formula are as follows:
Y indicates second complex signal, and Y ' expression carries out the complex signal that amplitude adjusts to second complex signal, and E is indicated
First default value；
The target phase information sequence is multiplied with the 5th frequency-region signal, obtains the 5th frequency-region signal corresponding
Six frequency-region signals；
Processing is decoded to the 6th frequency-region signal, obtains the signal to be transmitted that the transmitting terminal is sent.
8. a kind of signal processing apparatus, which is characterized in that described device is applied to the transmission in orthogonal frequency division multiplex OFDM system
It holds, further includes receiving end in the ofdm system, described device includes:
Replication module obtains the first quantity identical first for replicating to the corresponding frequency-region signal of signal to be transmitted
Frequency-region signal, wherein every one first frequency-region signal includes multiple complex signals；
First processing module, for being directed to every one first frequency-region signal, by first frequency-region signal and corresponding phase information sequence
Column are multiplied, and obtain corresponding second frequency-region signal of first frequency-region signal；
Matching module, for the corresponding relationship according to preset phase information sequence and side information sequence, determine with this first
The corresponding side information sequence of the corresponding phase information sequence of frequency-region signal, as the first side information sequence, wherein described
Side information sequence is used to carry out amplitude adjustment to the complex signal for including in frequency-region signal；
Amplitude modulation module, for according to the first side information sequence, the second frequency-region signal corresponding to first frequency-region signal
In include the amplitudes of multiple complex signals be adjusted, obtain corresponding third frequency-region signal；
Second processing module, for carrying out fast Fourier transforma respectively to obtained the first quantity third frequency-region signal
It changes, obtains the first quantity time-domain signal；
Sending module, for the smallest time-domain signal of peak-to-average force ratio in the first quantity time-domain signal to be sent to the reception
End, the smallest time-domain signal of peak-to-average force ratio is as target time-domain signal, so that the receiving end is according to the target time-domain signal pair
The amplitude for the multiple complex signals for including in the frequency-region signal answered and the phase information sequence are corresponding with side information sequence
Relationship determines the corresponding phase information sequence of the target time-domain signal.
9. a kind of signal processing apparatus, which is characterized in that described device is applied to the reception in orthogonal frequency division multiplex OFDM system
It holds, further includes transmitting terminal in the ofdm system, described device includes:
Module is obtained, the target time-domain signal sent for obtaining the transmitting terminal, wherein target time-domain signal is the transmission
End is according to the corresponding relationship of preset phase information sequence and side information sequence, and a to the first quantity to be transmitted identical the
The smallest time-domain signal of the peak-to-average force ratio that one frequency-region signal obtains after being handled；
First processing module obtains the target time domain letter for carrying out Fast Fourier Transform (FFT) to the target time-domain signal
Number corresponding 4th frequency-region signal；
Determining module determines and the described 4th for the amplitude according to the multiple complex signals for including in the 4th frequency-region signal
The corresponding target side information sequence of frequency-region signal；
Matching module, for the corresponding relationship according to preset phase information sequence and side information sequence, the determining and mesh
Mark the corresponding target phase information sequence of side information sequence.
10. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes claim 1-2, or, claim 3-7 is any
The method and step.
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