CN109728828A - Separate the method and signal processing apparatus of signal - Google Patents
Separate the method and signal processing apparatus of signal Download PDFInfo
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- CN109728828A CN109728828A CN201711043168.0A CN201711043168A CN109728828A CN 109728828 A CN109728828 A CN 109728828A CN 201711043168 A CN201711043168 A CN 201711043168A CN 109728828 A CN109728828 A CN 109728828A
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Abstract
The application provides a kind of method and signal processing apparatus for separating signal, this method comprises: determining the centre frequency and bandwidth of input signal；According to the centre frequency and bandwidth of the input signal, separation is determined；According to the separation and the input signal, which is separated into carrier power amplifier input signal and peak value power amplifier input signal.Corresponding separation can be determined for the input signal of any bandwidth and frequency using above-mentioned technical proposal, so as to be to be separated into carrier power amplifier input signal and peak value power amplifier input signal by the input signal of any bandwidth and frequency.
Description
Technical field
This application involves signal processing technology fields, and more particularly, to the method and signal processing of separation signal
Device.
Background technique
Power amplifier is the main energy dissipation device of transmitter.How to improve the efficiency of power amplifier be industry always with
Come the problem of concern.The method that digital processing technology and analog circuit combine, can not only reduce energy consumption but also can be with
Reduce the complexity of circuit structure.Therefore, in recent years, researchers propose Doherty (doherty) power amplifier of digital assistant, come
Improve the efficiency of power amplifier.
When the doherty power amplifier of digital assistant handles input signal, need that input signal is first separated into carrier wave
Two paths of signals, is then input in doherty amplifier and carries out subsequent place by power amplifier input signal and peak value power amplifier input signal
Reason.
Current doherty power amplifier is only capable of the identical input signal of frequency being separated into carrier power amplifier input signal and peak value
Power amplifier input signal.However, in practical applications, the frequency of input signal may be different.Therefore, how by any bandwidth
Carrier power amplifier input signal is separated into the input signal of frequency and peak value power amplifier input signal is a urgent problem to be solved.
Summary of the invention
The application provides a kind of method and signal processing apparatus for separating signal, can be by the input of any bandwidth and frequency
Signal is to be separated into carrier power amplifier input signal and peak value power amplifier input signal.
In a first aspect, the embodiment of the present application provides a kind of method for separating signal, this method comprises: determining input signal
Centre frequency and bandwidth；According to the centre frequency and bandwidth of the input signal, separation is determined；According to the separation and it is somebody's turn to do
The input signal is separated into carrier power amplifier input signal and peak value power amplifier input signal by input signal.Utilize above-mentioned technical side
Case can determine corresponding separation for the input signal of any bandwidth and frequency, so as to by any bandwidth and frequency
Input signal be to be separated into carrier power amplifier input signal and peak value power amplifier input signal, and by carrier power amplifier obtained after separation
Input signal and peak value power amplifier input signal are exported to doherty power amplifier.In this way, doherty power amplifier can be made to appoint in input
Under the signal of bandwidth of anticipating and frequency, the maximum working frequency of efficiency can be reached.
With reference to first aspect, in the first possible implementation of the first aspect, this is according in the input signal
Frequency of heart and bandwidth, determine separation, comprising: according to the centre frequency and bandwidth of the input signal, join from N number of frequecy characteristic
In manifold, M frequecy characteristic parameter set is determined, wherein each frequecy characteristic parameter set packet in N number of frequecy characteristic parameter set
The carrier power amplifier power, peak value power amplifier power, phase difference and output power of a frequency are included, N is just whole more than or equal to 2
Number, M are the positive integer more than or equal to 1 and less than or equal to N；According to the M frequecy characteristic parameter set, the segregative line is determined
Number.The frequency range phase of the M frequency and input signal in the M frequecy characteristic parameter set determined using above-mentioned technical proposal
Together, alternatively, the M frequency is in the frequency range of the input signal.In this way, can be true according to the M frequecy characteristic parameter set
Make the separation corresponding to the input signal.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect
In, this determines the separation according to the M frequecy characteristic parameter set, comprising: according to the M in the M frequecy characteristic parameter set
A carrier power amplifier power and M output power determine that the carrier power amplifier inputs separation；According to the M frequecy characteristic parameter
The M peak value power amplifier power and the M output power of concentration determine that the peak value power amplifier inputs separation；According to the M frequency
The M phase difference and the M output power that characteristic parameter is concentrated, determine the phase-difference control coefficient.Utilize above-mentioned technical proposal
It can determine carrier power amplifier input separation, peak value power amplifier input separation and the phase-difference control coefficient, from
And it can use above three coefficient and the input signal separated.
The possible implementation of second with reference to first aspect, in the third possible implementation of first aspect
In, this is separated into carrier power amplifier input signal and peak value power amplifier according to the separation and the input signal, by the input signal
Input signal, comprising: separation is inputted according to the input signal and the carrier power amplifier, determines the first separation signal；According to this
Input signal and the peak value power amplifier input separation, determine the second separation signal；According to the input signal and the phase difference control
Coefficient processed determines that third separates signal；According to the first separation signal and the input signal, carrier power amplifier input letter is determined
Number；According to the second separation signal, third separation signal and the input signal, the peak value power amplifier input signal is determined.It is above-mentioned
Technical solution utilizes carrier power amplifier input separation, peak value power amplifier input separation and the phase-difference control coefficient pair
The input signal is separated.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, this inputs separation according to modulus result and the carrier power amplifier, determines the first separation signal, comprising: uses following formula
Determine the first separation signal:
Wherein, x (n) indicates the input signal, K1Indicate that carrier power amplifier inputs separate function order, M1Indicate carrier power amplifier
Input the memory depth of separate function, akmIndicate that the carrier power amplifier inputs separation, f1(n) the first separation signal is indicated；
Separation is inputted according to the input signal and the peak value power amplifier, determines the second separation signal, comprising: using following
Formula determines the second separation signal:
Wherein, x (n) indicates the input signal, K2Indicate that peak value power amplifier inputs separate function order, M2Indicate peak value power amplifier
Input the memory depth of separate function, bkmIndicate that the peak value power amplifier inputs separation, f2(n) the second separation signal is indicated；
This determines that third separates signal, comprising: use following formula according to the input signal and the phase-difference control coefficient
Determine that the third separates signal:
Wherein, x (n) indicates the input signal, K3Indicate phase-difference control function order, M3Indicate phase-difference control function
Memory depth, ckmIndicate phase-difference control coefficient, f3(n) indicate that the third separates signal.
The 4th kind of possible implementation of the third possible implementation or first aspect with reference to first aspect,
In 5th kind of possible implementation of first aspect, this determines the carrier wave according to the first separation signal and the input signal
Power amplifier input signal, comprising: determine that the carrier power amplifier input signal is the input signal after the first separation signal and delay
The sum of；This determines the peak value power amplifier input signal according to the second separation signal, third separation signal and the input signal,
Comprise determining that the input after the peak value power amplifier input signal is the second separation signal, the third separates signal and postpones is believed
The sum of number.Above-mentioned technical proposal is by postponing input signal, so that the input signal first separates signal, this second point with this
Signal is separated with the third from signal to be aligned in time, so as to be more accurately obtained the carrier power amplifier input signal and
The peak value power amplifier input signal.
Second aspect, the embodiment of the present application also provide a kind of signal processing apparatus, which includes for real
The unit of any possible implementation of existing first aspect or first aspect.
The third aspect, the embodiment of the present application provide a kind of signal processing apparatus, which includes: memory,
For storing program；Processor, it is described when described program is performed for executing the described program of memory storage
Processor is for executing method described in any possible implementation of first aspect or first aspect.Optionally, the letter
Number processing unit is chip or integrated circuit.
Fourth aspect, the embodiment of the present application provide a kind of chip for executing first aspect or any of first aspect can
Method described in the implementation of energy.
5th aspect, the embodiment of the present application provide a kind of computer readable storage medium, the computer-readable storage
Instruction is stored in medium, when described instruction is run on computers, so that computer executes described in above-mentioned various aspects
Method.
6th aspect, the embodiment of the present application provides a kind of computer program product comprising instruction, when the computer journey
When sequence product is run on computers, so that computer executes method described in above-mentioned various aspects.
Detailed description of the invention
Fig. 1 is according to a kind of schematic flow chart for the method for separating signal provided by the embodiments of the present application.
Fig. 2 is the structural block diagram according to signal processing apparatus provided by the embodiments of the present application.
Fig. 3 is the schematic diagram according to the embodiment of the present application Doherty power amplification system.
Specific embodiment
Below in conjunction with attached drawing, the technical solution in the application is described.
Fig. 1 is according to a kind of schematic flow chart for the method for separating signal provided by the embodiments of the present application.
101, determine the centre frequency and bandwidth of input signal.
102, according to the centre frequency and bandwidth of the input signal, determine separation.
103, according to the separation and the input signal, which is separated into carrier power amplifier input signal and peak
It is worth power amplifier input signal.
Separation determined by method shown in FIG. 1 corresponds to input signal.Therefore, side shown in FIG. 1 is utilized
Method can determine corresponding separation for the input signal of any bandwidth and frequency, so as to by any bandwidth and frequency
Input signal be to be separated into carrier power amplifier input signal and peak value power amplifier input signal, and by carrier power amplifier obtained after separation
Input signal and peak value power amplifier input signal are exported to doherty power amplifier.In this way, doherty power amplifier can be made to appoint in input
Under the signal of bandwidth of anticipating and frequency, the maximum working frequency of efficiency can be reached.
Optionally, in some embodiments, the centre frequency and bandwidth according to input signal determines that separation can be with
Include: the centre frequency and bandwidth according to the input signal, from N number of frequecy characteristic parameter set, determines M frequecy characteristic parameter
Collection；According to the M frequecy characteristic parameter set and the input signal, separation is determined.It is every in N number of frequecy characteristic parameter set
A frequecy characteristic parameter set includes that the carrier power amplifier power an of frequency, peak value power amplifier power, phase difference and output power, N are
Positive integer more than or equal to 2, M are the positive integer more than or equal to 1 and less than or equal to N.Understand, the input signal
Centre frequency should be in the M frequency range included by the M frequency parameter collection.
Table 1 is the schematic diagram of frequecy characteristic parameter set.
| Frequency | Carrier power amplifier power | Peak value power amplifier power | Phase difference | Output power |
| f1 | Pc1 | Pp1 | Φ1 | Po1 |
| f2 | Pc2 | Pp2 | Φ2 | Po2 |
| f3 | Pc3 | Pp3 | Φ3 | Po3 |
| … | … | … | … | … |
| fN-1 | PcN-1 | PpN-1 | ΦN-1 | PoN-1 |
| fN | PcN | PpN | ΦN | PoN |
Table 1
It as shown in table 1, is f in frequency1When carrier power amplifier power be Pc1, peak value power amplifier power is Pp1, phase difference is
Φ1, output power Po1；It is f in frequency2When carrier power amplifier power be Pc2, peak value power amplifier power is Pp2, phase difference is
Φ2, output power Po2, and so on.Wherein f1For the minimum frequency of operation of doherty power amplifier, fNFor the doherty power amplifier
Maximum operation frequency.
Optionally, in some embodiments, f1To fNIt can be equal part.For example, in some embodiments, doherty function
The working frequency put is 1GHz to 2GHz.Assuming that divided with 20MHz, then f1=1Ghz, f2=1.02GHz, f3=1.04GHz, f4
=1.06GHz ... ..., fN=2GHz.
Optionally, in further embodiments, f1To fNIt is also possible to not equal part.If for example, in more input signal
Centre frequency in a particular range, then the side frequency interval in the particular range is smaller, not in the particular range
Side frequency interval it is larger.For example, it is assumed that the working frequency of doherty power amplifier is 1GHz to 2GHz, and 80% input
The centre frequency of signal is in 1.4GHz between 1.8GHz.In the case, 1.4GHz is to the side frequency between 1.8GHz
Interval can be 10MHz, for example, 1.4GHz, 1.41GHz, 1.42GHz ... ..., 1.8Ghz.Other than 1.4GHz to 1.8GHz
The interval of side frequency can be 40Mhz, for example, 1.0GHz, 1.04GHz, 1.08GHz etc..
Parameters in N number of frequecy characteristic parameter set, which can be, to be pre-set.For example, can be by trained
Mode obtains the carrier power amplifier power of each frequency, peak value power amplifier power, phase difference and output power.Specifically, it can use
Two-way tone signal tests power amplifier characteristic, control main power amplifier and peak value power amplifier input signal amplitude be respectively Pc and
Pp, phase difference Φ.The variation range of Pc is AdBm to BdBm (wherein, A and B is positive integer, and B is greater than A), changes stepping
For 1dBm.The variation range of Pp is CdBm to DdBm (wherein, C and D is positive integer, and D is greater than C, and C is greater than A), and variation stepping is
1dBm.Φ variation range is 0 ° to 180 °, and variation stepping is 5 °.All combinations of tri- variables of Pc, Pp and Φ are traversed, no
Disconnected ground is scanned dual input power amplifier, obtains the relational graph of power amplifier output power and delivery efficiency.By the relational graph
It is found that each output power point PoThere are multiple input points (Pc, Pp, Φ) to be corresponding to it.But these put corresponding power amplifier
Delivery efficiency is not identical.It therefore, can be in different output powers in order to achieve the purpose that the delivery efficiency for improving power amplifier
Under, the highest point of efficiency of selection, and store the corresponding carrier power amplifier input power of these points, peak value power amplifier input power, phase
Potential difference and output power are as the carrier power amplifier power of the frequency, peak value power amplifier power, phase difference and output power.
Carrier power amplifier power, peak value power amplifier power, phase difference and the output power of each frequency can also unite according to history
Data are counted to determine.
M frequency in the M frequecy characteristic parameter set is identical as the frequency range of input signal, alternatively, the M frequency
In the frequency range of the input signal.For example, it is assumed that the centre frequency of input signal is 1.09GHz, bandwidth 60MHz.Together
When, it is also assumed that the working frequency of doherty power amplifier is 1GHz to 2GHz, and the frequency that N number of frequecy characteristic is concentrated is divided with 20MHz
's.In this case, it is possible to select the frequecy characteristic collection of the frequency of 1.06GHz, 1.08GHz, 1.10GHz and 1.12GHz.Again
Such as, it is assumed that the centre frequency of input signal is 1.08GHz, bandwidth 60MHz.Assuming that the working frequency of doherty power amplifier is same
For 1GHz to 2GHz, the frequency that N number of frequecy characteristic is concentrated is divided with 20MHz.In this case, it is possible to select 1.04GHz,
The frequecy characteristic collection of the frequency of 1.06GHz, 1.08GHz, 1.10GHz and 1.12GHz.
Optionally, in some embodiments, which may include carrier power amplifier input separation, peak value power amplifier
Input separation and phase-difference control coefficient.This determines the separation, can wrap according to the M frequecy characteristic parameter set
It includes: according to the M carrier power amplifier power and M output power in the M frequecy characteristic parameter set, determining that the carrier power amplifier inputs
Separation；According to the M peak value power amplifier power and the M output power in the M frequecy characteristic parameter set, the peak value is determined
Power amplifier inputs separation；According to the M phase difference and the M output power in the M frequecy characteristic parameter set, determining should
Phase-difference control coefficient.
For example, it is assumed that the centre frequency of input signal is 1.04GHz, bandwidth 40MHz.Simultaneously, it is also assumed that doherty function
The working frequency put is 1GHz to 2GHz, and the frequency that N number of frequecy characteristic is concentrated is divided with 20MHz.In the case, the M
A frequecy characteristic collection is as shown in table 2.
| Frequency | Carrier power amplifier power | Peak value power amplifier power | Phase difference | Output power |
| 1.02GHz | Pc1 | Pp1 | Φ1 | Po1 |
| 1.04GHz | Pc2 | Pp2 | Φ2 | Po2 |
| 1.06GHz | Pc3 | Pp3 | Φ3 | Po3 |
Table 2
In this case, it is possible to according to Pc1、Pc2、Pc3And Po1、Po2、Po3It can determine that the carrier power amplifier inputs segregative line
Number akm。
Specifically, akmIt is to be determined by following formula:
A=(XHX)-1XHY, (formula 1.1)
Wherein, X and Y is matrix, and H representing matrix transposition operation, -1 indicates finding the inverse matrix operation.Assuming that K=5, M=1,
Pc2=[0.21,0.41,0.61,0.81], Pc3=[0.22,0.42,0.62,0.82], Pc4=[0.23,0.43,0.63,
0.83], Po2=[0.11,0.31,0.51,0.71], Po3=[0.12,0.32,0.52,0.72], Po4=[0.13,0.33,
0.53,0.73]。
A=[a10,a11,a20,a21,...,a52]T, (formula 1.2)
Formula 1.3 and formula 1.4 are substituted into the value of the then available A of formula 1.1, i.e. akmValue.
Similar, according to Pp1、Pp2、Pp3And Po1、Po2、Po3It can determine that the peak value power amplifier inputs separate function bkm, root
According to Φ1、Φ2、Φ3And Po1、Po2、Po3It can determine phase-difference control function ckm。
bkmAnd ckmSpecific determination process and akmSpecific determination process it is similar, need not just repeat herein.
Carrier power amplifier input separation, the peak value power amplifier separation and the phase-difference control coefficient is being determined
It afterwards, can be according to input signal, carrier power amplifier input separation, the peak value power amplifier separation and the phase-difference control system
Number determines the carrier power amplifier input signal and the peak value power amplifier input signal.
Specifically, separation can be inputted according to the input signal and the carrier power amplifier, determines the first separation signal；Root
Separation is inputted according to the input signal and the peak value power amplifier, determines the second separation signal；According to the input signal and the phase
Poor control coefrficient determines that third separates signal；The first separation signal and the input signal determine that the carrier power amplifier inputs
Signal；According to the second separation signal, third separation signal and the input signal, the peak value power amplifier input signal is determined.
More specifically, can determine the first separation signal according to formula 1.5:
Wherein, x (n) indicates input signal, K1Separate function order, M are inputted for carrier power amplifier1For carrier power amplifier input point
Memory depth from function, akmSeparation, f are inputted for carrier power amplifier1(n) the first separation signal is indicated.M1To set in advance
Fixed fixed value, K1Related to the input signal, the bandwidth of the input signal is bigger, K1Value it is bigger.
The second separation signal can be determined according to formula 1.6.
Wherein, x (n) indicates input signal, K2Separate function order, M are inputted for peak value power amplifier2For the input point of peak value power amplifier
Memory depth from function, bkmSeparate function coefficient, f are inputted for peak value power amplifier2It (n) is the second separation signal.M2It is preparatory
The fixed value of setting, K2Related to the input signal, the bandwidth of the input signal is bigger, K2Value it is bigger.bkmIt needs according to peak
It is worth power amplifier power and output power determines.
The second separation signal can be determined according to formula 1.7.
Wherein, x (n) indicates input signal, K3For phase-difference control function order, M3For the memory of phase-difference control function
Depth, ckmFor phase-difference control coefficient, f3(n) signal is separated for the third.M3For preset fixed value, K3With the input
Signal is related, and the bandwidth of the input signal is bigger, K3Value it is bigger.
Optionally, in some embodiments, this determines the carrier power amplifier according to the first separation signal and the input signal
Input signal, comprising: determine that the carrier power amplifier input signal is the sum of the input signal after the first separation signal and delay；
This determines the peak value power amplifier input signal according to the second separation signal, third separation signal and the input signal, comprising:
Determine the peak value power amplifier input signal be this second separation signal, the third separate signal and delay after the input signal it
With.
The input signal used when determining the carrier power amplifier input signal can carry out delay disposal.This is because determining
The process of first separation needs certain time to handle.That is, first separation is according to t1Moment input
What signal determined, and the input signal for not carrying out delay disposal is t2Moment, t2Moment late childbirth t1Moment.It therefore, can should
Input signal carries out delay disposal, so that the input signal after delay first separates signal and be aligned in time with this.In this way, can
To improve the accuracy for the carrier power amplifier input signal determined.Similar, it can also be to this when determining peak value power amplifier input
Input signal carries out delay disposal, so that can make identified second by carrying out delay disposal to the input signal
Separation signal, third separation signal and input signal are aligned in time.In this way, the peak value power amplifier input determined can be improved
The accuracy of signal.
Optionally, in further embodiments, it is defeated can be pre-saved by trained or historical statistical data in advance for this
Enter the centre frequency of signal and the corresponding relationship of bandwidth and separation.In this way, can be directly according to the corresponding pass pre-saved
System determines the separation corresponding to the input signal.
Optionally, in further embodiments, frequency can be pre-saved by trained or historical statistical data in advance
The corresponding relationship of characteristic parameter collection and separation.In this way, can determine to correspond to directly according to the corresponding relationship pre-saved
In the separation of frequecy characteristic parameter set.In other words, which is being determined according to the centre frequency and bandwidth of the input signal
After a frequecy characteristic parameter set, the separation for corresponding to the input signal can be directly determined according to the M frequecy characteristic parameter set
Coefficient.
Fig. 2 is the structural block diagram according to signal processing apparatus provided by the embodiments of the present application.As shown in Fig. 2, device 200 wraps
Include input unit 201 and processing unit 202.
Input unit 201, for obtaining input signal.
Processing unit 202, for determining the centre frequency and bandwidth of the input signal.
Processing unit 202 is also used to centre frequency and bandwidth according to the input signal, determines separation.
Processing unit 202 is also used to be separated into the input signal according to the separation and the input signal
Carrier power amplifier input signal and peak value power amplifier input signal.
Signal processing apparatus 200 as shown in Figure 2 determines corresponding separation for the input signal of any bandwidth and frequency
Coefficient, so as to be to be separated into carrier power amplifier input signal and the input of peak value power amplifier by the input signal of any bandwidth and frequency
Signal.Signal processing apparatus 200 as shown in Figure 2 can also include output unit.Signal processing apparatus 200 can be defeated by this
Unit is to doherty power amplifier out.The output unit is used for the carrier power amplifier input signal and the peak value power amplifier input signal is defeated
Out to doherty power amplifier.In this way, doherty power amplifier can be made in the case where inputting the signal of any bandwidth and frequency, can reach
To the maximum working frequency of efficiency.
Optionally, in some embodiments, which may include the first output unit and the second output unit, be somebody's turn to do
First output unit is for exporting the carrier power amplifier input signal, and second output unit is for exporting peak value power amplifier input letter
Number.
The specific work process and beneficial effect of input unit 201 and processing unit 202 may refer to implementation shown in FIG. 1
Example, need not just repeat herein.
Optionally, in some embodiments, signal processing apparatus 200 can be with general processor, digital signal processor
(Digital Signal Processor, DSP), specific integrated circuit (Application Specific Integrated
Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other can
Programmed logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute present invention implementation
Disclosed each method, step and logic diagram in example.
Fig. 3 is the schematic diagram according to the embodiment of the present application Doherty power amplification system.As shown in figure 3, Doherty power amplification system
300 include signal processing apparatus 301 and Doherty power amplifier 302.
Signal processing apparatus 301 can be signal processing apparatus 200 as shown in Figure 2.The first of signal processing apparatus 301
Output interface is coupled to the first input interface of Doherty power amplifier 302.Second output interface of signal processing apparatus 301 is coupled to
Second output interface of Doherty power amplifier.
Signal processing apparatus is used to input signal being separated into carrier power amplifier input signal and peak value power amplifier input signal, and
The carrier power amplifier input signal is exported to first input interface by first output interface, passes through second output interface
The peak value power amplifier input signal is exported to second input interface.
The specific work process of signal processing apparatus 301 may refer to the embodiment of Fig. 1 or Fig. 2, need not just repeat herein.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), arbitrary access are deposited
The various media that can store program code such as reservoir (Random Access Memory, RAM), magnetic or disk.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (12)
1. a kind of method for separating signal, which is characterized in that the described method includes:
Determine the centre frequency and bandwidth of input signal；
According to the centre frequency and bandwidth of the input signal, separation is determined；
According to the separation and the input signal, the input signal is separated into carrier power amplifier input signal and peak value
Power amplifier input signal.
2. the method as described in claim 1, which is characterized in that the centre frequency and bandwidth according to the input signal,
Determine separation, comprising:
According to the centre frequency and bandwidth of the input signal, from N number of frequecy characteristic parameter set, M frequecy characteristic ginseng is determined
Manifold, wherein each frequecy characteristic parameter set in N number of frequecy characteristic parameter set includes the carrier power amplifier function an of frequency
Rate, peak value power amplifier power, phase difference and output power, N are the positive integer more than or equal to 2, and M is more than or equal to 1 and to be less than
Or the positive integer equal to N；
According to the M frequecy characteristic parameter set, the separation is determined.
3. method according to claim 2, which is characterized in that it is described according to the M frequecy characteristic parameter set, determine described in
Separation, comprising:
According to the M carrier power amplifier power and M output power in the M frequecy characteristic parameter set, the carrier wave function is determined
Put input separation；
According to the M peak value power amplifier power and the M output power in the M frequecy characteristic parameter set, the peak is determined
It is worth power amplifier and inputs separation；
According to the M phase difference and the M output power in the M frequecy characteristic parameter set, the phase difference control is determined
Coefficient processed.
4. method as claimed in claim 3, which is characterized in that it is described according to the separation and the input signal, it will
The input signal is separated into carrier power amplifier input signal and peak value power amplifier input signal, comprising:
Separation is inputted according to the input signal and the carrier power amplifier, determines the first separation signal；
Separation is inputted according to the input signal and the peak value power amplifier, determines the second separation signal；
According to the input signal and the phase-difference control coefficient, determine that third separates signal；
According to the first separation signal and the input signal, the carrier power amplifier input signal is determined；
According to the second separation signal, third separation signal and the input signal, the peak value power amplifier input is determined
Signal.
5. method as claimed in claim 4, which is characterized in that described according to modulus result and carrier power amplifier input separation
Coefficient determines the first separation signal, comprising: determines the first separation signal using following formula:
Wherein, x (n) indicates the input signal, K1Indicate that carrier power amplifier inputs separate function order, M1Indicate that carrier power amplifier is defeated
Enter the memory depth of separate function, akmIndicate the carrier power amplifier input separation, f1(n) the first separation letter is indicated
Number；
Separation is inputted according to the input signal and the peak value power amplifier, determines the second separation signal, comprising: using following
Formula determines the second separation signal:
Wherein, x (n) indicates the input signal, K2Indicate that peak value power amplifier inputs separate function order, M2Indicate that peak value power amplifier is defeated
Enter the memory depth of separate function, bkmIndicate the peak value power amplifier input separation, f2(n) the second separation letter is indicated
Number；
It is described according to the input signal and the phase-difference control coefficient, determine that third separates signal, comprising: use following public affairs
Formula determines the third separation signal:
Wherein, x (n) indicates the input signal, K3Indicate phase-difference control function order, M3Indicate phase-difference control function
Memory depth, ckmIndicate phase-difference control coefficient, f3(n) indicate that the third separates signal.
6. method as described in claim 4 or 5, which is characterized in that described according to the first separation signal and the input
Signal determines the carrier power amplifier input signal, comprising:
Determine that the carrier power amplifier input signal is the sum of the input signal after the first separation signal and delay；
It is described that signal and the input signal are separated according to the second separation signal, the third, determine the peak value power amplifier
Input signal, comprising:
It determines described after the peak value power amplifier input signal separates signal and delay for the second separation signal, the third
The sum of input signal.
7. a kind of signal processing apparatus, which is characterized in that described device includes:
Input unit, for obtaining input signal；
Processing unit, for determining the centre frequency and bandwidth of the input signal；
The processing unit is also used to centre frequency and bandwidth according to the input signal, determines separation；
The processing unit, is also used to according to the separation and the input signal, and the input signal is separated into load
Wave power amplifier input signal and peak value power amplifier input signal.
8. device as claimed in claim 7, which is characterized in that the processing unit is specifically used for according to the input signal
Centre frequency and bandwidth determine M frequecy characteristic parameter set from N number of frequecy characteristic parameter set, wherein N number of frequency
Each frequecy characteristic parameter set that characteristic parameter is concentrated includes the carrier power amplifier power an of frequency, peak value power amplifier power, phase
Difference and output power, N are the positive integer more than or equal to 2, and M is the positive integer more than or equal to 1 and less than or equal to N；
According to the M frequecy characteristic parameter set, the separation is determined.
9. device as claimed in claim 8, which is characterized in that the processing unit is specifically used for special according to the M frequency
The M carrier power amplifier power and M output power in parameter set are levied, determines the carrier power amplifier input separation；
According to the M peak value power amplifier power and the M output power in the M frequecy characteristic parameter set, the peak is determined
It is worth power amplifier and inputs separation；
According to the M phase difference and the M output power in the M frequecy characteristic parameter set, the phase difference control is determined
Coefficient processed.
10. device as claimed in claim 9, which is characterized in that the processing unit is specifically used for according to the input signal
Separation is inputted with the carrier power amplifier, determines the first separation signal；
Separation is inputted according to the input signal and the peak value power amplifier, determines the second separation signal；
According to the input signal and the phase-difference control coefficient, determine that third separates signal；
According to the first separation signal and the input signal, the carrier power amplifier input signal is determined；
According to the second separation signal, third separation signal and the input signal, the peak value power amplifier input is determined
Signal.
11. device as claimed in claim 10, which is characterized in that the processing unit is specifically used for true using following formula
The fixed first separation signal:
Wherein, x (n) indicates the input signal, K1Indicate that carrier power amplifier inputs separate function order, M1Indicate that carrier power amplifier is defeated
Enter the memory depth of separate function, akmIndicate the carrier power amplifier input separation, f1(n) the first separation letter is indicated
Number；
The second separation signal is determined using following formula:
Wherein, x (n) indicates the input signal, K2Indicate that peak value power amplifier inputs separate function order, M2Indicate that peak value power amplifier is defeated
Enter the memory depth of separate function, bkmIndicate the peak value power amplifier input separation, f2(n) the second separation letter is indicated
Number；
The third separation signal is determined using following formula:
Wherein, x (n) indicates the input signal, K3Indicate phase-difference control function order, M3Indicate phase-difference control function
Memory depth, ckmIndicate phase-difference control coefficient, f3(n) indicate that the third separates signal.
12. device as described in claim 10 or 11, which is characterized in that the processing unit is specifically used for determining the load
Wave power amplifier input signal is the sum of the input signal after the first separation signal and delay；
It is described that signal and the input signal are separated according to the second separation signal, the third, determine the peak value power amplifier
Input signal, comprising:
It determines described after the peak value power amplifier input signal separates signal and delay for the second separation signal, the third
The sum of input signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021213226A1 (en) * | 2020-04-21 | 2021-10-28 | 华为技术有限公司 | Power control method and power control apparatus |
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| CN101388706A (en) * | 2007-09-13 | 2009-03-18 | 陈意辉 | Highly efficient ultra-linear DFFA mobile wideband communication power amplifier |
| CN102137518A (en) * | 2010-01-25 | 2011-07-27 | 上海华为技术有限公司 | Doherty power amplifier and multi-frequency band signal parameter adjusting device |
| CN102158190A (en) * | 2011-04-29 | 2011-08-17 | 中兴通讯股份有限公司 | Doherty power amplifier and implementation method thereof |
| CN102986134A (en) * | 2011-05-30 | 2013-03-20 | 华为技术有限公司 | Doherty power amplifier and signal processing method |
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| CN101388706A (en) * | 2007-09-13 | 2009-03-18 | 陈意辉 | Highly efficient ultra-linear DFFA mobile wideband communication power amplifier |
| CN102137518A (en) * | 2010-01-25 | 2011-07-27 | 上海华为技术有限公司 | Doherty power amplifier and multi-frequency band signal parameter adjusting device |
| CN102158190A (en) * | 2011-04-29 | 2011-08-17 | 中兴通讯股份有限公司 | Doherty power amplifier and implementation method thereof |
| CN102986134A (en) * | 2011-05-30 | 2013-03-20 | 华为技术有限公司 | Doherty power amplifier and signal processing method |
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