CN116996348B - Burr avoidance processing method, apparatus, device and readable storage medium - Google Patents
Burr avoidance processing method, apparatus, device and readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The embodiment of the application provides a burr avoidance processing method, a device, equipment and a readable storage medium, wherein the method comprises the following steps: determining a spur position of the baseband signal; and shifting the frequency of the baseband signal according to the burr position.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a burr avoidance processing method, device and equipment and a readable storage medium.
Background
Fig. 1 is a diagram of a typical zero if receiver architecture used by a terminal and a base station of the fifth generation mobile communication technology (5th Generation,5G). Receiving radio frequency signals (the frequency is fsig) through an antenna, filtering the radio frequency signals through a filter, and amplifying the signals through a low-noise radio frequency amplifier; mixing the radio frequency signal to baseband by a mixer (local oscillator frequency flo, flo= fsig); amplifying the baseband signal to proper power and filtering out useless signals outside the band at the baseband through an intermediate frequency filter, a transimpedance amplifier, a programmable amplifier and the like; after being converted into a digital baseband signal by an Analog-to-Digital Converter (ADC), the digital baseband signal is processed by a digital processing unit, such as down-sampling, frequency shifting, digital filtering and the like, and finally digital signal output is realized.
Fig. 2 shows a schematic diagram of the baseband spectrum before ADC, where the shaded portion is the useful signal, fbm is the maximum baseband bandwidth that can be supported by the system, and the bold line in the shaded portion represents the radio frequency, frequency conversion, and glitch interference introduced by the baseband portion circuitry, which can result in a degradation of the signal-to-noise ratio, and these glitches are introduced into the digital portion following the analog-to-digital converter and ultimately affect the signal quality.
Disclosure of Invention
The embodiment of the application provides a burr avoidance processing method, device and equipment and a readable storage medium, which solve the problem of burr interference.
In a first aspect, a burr avoidance processing method is provided, including:
determining a spur position of the baseband signal;
And shifting the frequency of the baseband signal according to the burr position.
Optionally, the determining the burr location of the baseband signal includes:
respectively acquiring all burr positions before and after the local oscillation frequency is changed;
And determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
Optionally, the shifting the frequency of the baseband signal according to the burr position includes:
determining a frequency offset according to the burr position and the bandwidth of the baseband signal;
and shifting the frequency of the baseband signal according to the frequency offset.
Optionally, determining the frequency offset according to the burr location and the bandwidth of the baseband signal includes:
Determining a target center frequency according to the total power of burrs in the bandwidth of the baseband signal or according to the quantity of burrs, exceeding a threshold power, of the burr power in the bandwidth of the baseband signal;
and determining a frequency offset according to the target center frequency and the frequency of the baseband signal.
Optionally, determining the target center frequency according to the total power of the burrs in the bandwidth of the baseband signal includes:
dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal;
and acquiring the total power of the burrs of each bandwidth part, and determining the center frequency corresponding to the bandwidth part with the minimum total power of the burrs as the target center frequency.
Optionally, determining the center frequency of the baseband signal according to the number of burrs that the burr power exceeds the threshold power in the bandwidth of the baseband signal includes:
dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal;
And acquiring the burr number of the burr power of each bandwidth part exceeding the threshold power, and determining the center frequency corresponding to the bandwidth part with the minimum burr number as the target center frequency.
In a second aspect, there is provided a burr avoidance processing apparatus including:
A determining module for determining a burr position of the baseband signal;
and the processing module is used for shifting the frequency of the baseband signal according to the burr position.
Optionally, the determining module includes:
the acquisition unit is used for respectively acquiring all burr positions before and after the local oscillation frequency is changed;
And the first determining unit is used for determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
Optionally, the processing module includes:
A second determining unit, configured to determine a frequency offset according to the burr position and the bandwidth of the baseband signal;
And the processing unit is used for shifting the frequency of the baseband signal according to the frequency offset.
Optionally, the second determining unit includes:
A first determining subunit, configured to determine a target center frequency according to total power of the glitches in the bandwidth of the baseband signal, or according to a number of glitches in the bandwidth of the baseband signal where the power of the glitches exceeds a threshold power;
And the second determining subunit is used for determining the frequency offset according to the target center frequency and the frequency of the baseband signal.
Optionally, the first determining subunit is further configured to: dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal; and acquiring the total power of the burrs of each bandwidth part, and determining the center frequency corresponding to the bandwidth part with the minimum total power of the burrs as the target center frequency.
Optionally, the first determining subunit is further configured to: dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal; and acquiring the burr number of the burr power of each bandwidth part exceeding the threshold power, and determining the center frequency corresponding to the bandwidth part with the minimum burr number as the target center frequency.
In a seventh aspect, there is provided a communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect.
In an eighth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.
In the embodiment of the application, the burr generated by the baseband part of the receiving link can be eliminated or lightened by determining the burr position of the baseband signal and moving the frequency of the baseband signal according to the burr position, so that the influence of the burr on the baseband signal is relieved.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
Fig. 1 is a typical zero intermediate frequency receiver architecture;
FIG. 2 is a schematic diagram of the baseband spectrum before ADC;
FIG. 3 is a schematic diagram of a burr avoidance processing method according to an embodiment of the present application;
FIG. 4a is a schematic diagram of an original baseband spectrum provided by an embodiment of the present application;
Fig. 4b is a schematic diagram of a shifted baseband spectrum according to an embodiment of the present application;
FIG. 5 is a schematic diagram of the overall spur position as seen from the digital domain provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of the overall spur positions seen from the digital domain after a local oscillator frequency is changed according to an embodiment of the present application;
FIG. 7 is a diagram of the locations of glitches created by a baseband section as seen from the digital domain provided by an embodiment of the present application;
FIG. 8 is a schematic diagram of spur avoidance provided by an embodiment of the present application;
FIG. 9 is a schematic diagram of a burr avoidance processing apparatus provided by an embodiment of the present application;
Fig. 10 is a schematic diagram of a communication device provided by an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.
In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
Referring to fig. 3, an embodiment of the present application provides a burr avoidance processing method, which is applied to a first device, where the first device includes but is not limited to a terminal, a network side device, and the specific steps include: step 301 and step 302.
Step 301: determining a spur position of the baseband signal;
Optionally, all burr positions before local oscillation frequency change and all burr positions after local oscillation frequency change are obtained, and all burrs comprise: baseband glitches, local oscillator glitches and/or radio frequency glitches; and determining the burr position of the baseband signal according to all the burr positions before the local oscillation frequency is changed and all the burr positions after the local oscillation frequency is changed.
Step 302: and shifting the frequency of the baseband signal according to the burr position.
In one embodiment of the present application, the determining the burr location of the baseband signal includes:
Step 3011: respectively acquiring all burr positions before and after the local oscillation frequency is changed;
Step 3012: and determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
Because the local oscillation burr and the radio frequency burr can generate frequency change along with the change of the local oscillation frequency, the burr position of the baseband signal can be determined by comparing all burr positions before the local oscillation frequency is changed with all burr positions after the local oscillation frequency is changed.
As shown in fig. 6, the spur indicated by the thin line varies with the local oscillation frequency, while the spur indicated by the thick line does not vary. The positions of the spurs other than the baseband spurs can be changed in this way, and the positions of the spurs of the baseband signal can be clarified as illustrated in fig. 7, i.e., the thick lines indicate the positions of the spurs.
In one embodiment of the present application, the shifting the frequency of the baseband signal according to the burr location includes:
Step 3021: determining a frequency offset (flo_alter) from the spur location and a bandwidth (Fbs) of the baseband signal;
The frequency offset (flo_alter) is used for the spectrum shift reception procedure, as shown in fig. 4a and 4b, as follows:
(1) The control circuit of the digital part can control the frequency of the local oscillator so that the local oscillator frequency is changed from Flo to Flo_alter;
(2) At this time, the center frequency of the signal down-converted by the mixer is changed from Fsig-flo=0 to Fsig-flo_alter=fs (center frequency), and Fsh =fs+fbs needs to be smaller than Fbm because the maximum baseband bandwidth is Fbm, where Fsh represents the upper sideband position of the signal, fbs represents the bandwidth of the baseband signal, and Fsig is the signal frequency.
(3) The baseband signal is converted into a digital domain through an analog-to-digital converter, the digital domain is further subjected to down-conversion through a digital control oscillator (Numerically Controlled Oscillator, NCO), the digital local oscillation frequency is Fs, and the original signal can be restored after filtering.
In step 3021, when the signal bandwidth (Fbs) is smaller than the maximum baseband bandwidth (Fbm), the baseband position may be shifted by a spectral shifting scheme with a shifting range of [0, fbm-Fbs ], i.e. fs=fsig-flo_alter e [0, fbm-Fbs ]. So Flo_alter ε [ Fsig-Fbm+Fbs, fsig ] can be obtained.
Step 3022: and shifting the frequency of the baseband signal according to the frequency offset (Flo_alter).
In one embodiment of the application, determining the frequency offset based on the spur location and the bandwidth (Fbs) of the baseband signal comprises:
step 30211: determining a target center frequency (Fsmin) according to the total power of the glitches in the bandwidth (Fbs) of the baseband signal or according to the number of glitches in the bandwidth Fbs of the baseband signal, wherein the power of the glitches exceeds a threshold power;
Step 30212: a frequency offset (Flo_alter) is determined from the target center frequency (Fs) and the frequency (Fsig) of the baseband signal.
For example, frequency offset (flo_alter) =frequency (Fsig) -target center frequency (Fsmin). The frequency moving process can realize burr avoidance, and the influence of burrs on performance is reduced as much as possible.
In one embodiment of the application, determining the target center frequency (Fsmin) from the total power of the spur in the bandwidth (Fbs) of the baseband signal comprises:
Step 302111: dividing a maximum baseband bandwidth (Fbm) supported by a system into a plurality of bandwidth portions according to a bandwidth (Fbs) of the baseband signal; and acquiring the total power of the burrs of each bandwidth part, and determining the center frequency (Fs) corresponding to the bandwidth part with the minimum total power of the burrs as the target center frequency (Fsmin).
For example, as shown in fig. 8, within the maximum bandwidth supported by the system [0, fbm ], a segment of continuous Fbs bandwidth [ Fs, fs+fbs ] is selected, and the total spur power Pspur within the segment of bandwidth is calculated. Fs epsilon [0, fbm-Fbs ] are scanned, the total power Pspur of each burr is recorded, and Fs under the condition of the minimum power Pspurmin is finally selected and determined to be a target center frequency (Fsmin).
In one embodiment of the application, determining the target center frequency (Fsmin) from the number of spurs in which the spur power exceeds a threshold power within the bandwidth (Fbs) of the baseband signal comprises:
Step 302112: dividing a maximum baseband bandwidth (Fbm) supported by a system into a plurality of bandwidth portions according to a bandwidth (Fbs) of the baseband signal; and acquiring the number of burrs of which the burr power exceeds the threshold power of each bandwidth part, and determining the center frequency (Fs) corresponding to the bandwidth part with the minimum burr number as the target center frequency (Fsmin).
For example, as shown in fig. 8, within the maximum bandwidth supported by the system [0, fbm ], a continuous Fbs bandwidth [ Fs, fs+fbs ] is selected, and the number Nspur of burs whose burs power exceeds the threshold power Pthreshold in the bandwidth is calculated. Fs e [0, fbm-Fbs ] was scanned and the number Nspur of burrs per each was recorded, and the final selected number of Fs at Nspurmin was denoted as Fsmin. Alternatively, the threshold power Pthreshold is determined based on the effect on the signal, and typically-70 dBc is chosen after normalization.
In the embodiment of the application, the burr position of the baseband signal is determined, and the frequency of the baseband signal is shifted according to the burr position, so that the burrs generated by the baseband part of the receiving link can be eliminated or reduced, and the influence of the burrs on the baseband signal is relieved.
Example 1: the burr avoidance processing flow is described with reference to fig. 1 and 5 to 8.
Step 1: the digital part sends out a calibration instruction;
The digital part sends out a calibration instruction, and under the condition of not receiving radio frequency signals, the calibration instruction is converted into the digital part through the ADC through a receiving link, and the frequency conversion FFT after digital processing can obtain a spectrogram of the burr position. As shown in fig. 5.
Step 2: the digital part controls and changes the local oscillation frequency and then sends out a calibration instruction to determine the burr position of the baseband signal
And (3) after the local oscillation frequency is changed through the digital part, a calibration instruction is sent out, and the step (1) is described above. As the local oscillation burr and the radio frequency burr generate frequency change along with the change of the local oscillation frequency, as shown in fig. 6, the burr represented by the thin line changes along with the change of the local oscillation frequency, and the burr frequency represented by the thick line does not change. The positions of the burrs other than the baseband burrs can be changed in this way, and the positions of the burrs of the baseband signal can be clarified as shown in fig. 7, i.e., the thick lines indicate the positions of the burrs.
Step 3: flo_alter is determined based on the bandwidth Fbs of the baseband signal.
The information of Fbs can be obtained through the setting of the device. When Fbs is smaller than Fbm, the baseband position can be shifted by the aforementioned spectrum shifting scheme with a shifting range of [0, fbm-Fbs ], i.e., fs=fsig-flo_alter e [0, fbm-Fbs ]. So Flo_alter ε [ Fsig-Fbm+Fbs, fsig ] can be obtained.
The target center frequency is then determined by the location of the spur produced by the baseband section as seen from the digital domain (Fsmin). In order to possibly reduce the effect of burs on communication quality, embodiment 1 proposes two evasion modes: (1) an in-band spur total power avoidance scheme; (2) an in-band exceeding threshold spur number avoidance scheme.
Mode 1: in-band glitch total power avoidance scheme.
And selecting a continuous Fbs bandwidth [ Fs, fs+Fbs ] within the maximum bandwidth supported by the system [0, fbm ], and calculating the total burr power Pspur in the bandwidth. The Fs e 0, fbm-Fbs is scanned and the total power Pspur per spur is recorded, and finally Fs for the minimum Pspurmin power is selected and noted as Fsmin.
Mode 2: in-band exceeding threshold spur number avoidance scheme.
And selecting a continuous Fbs bandwidth [ Fs, fs+Fbs ] within the maximum bandwidth supported by the system, and calculating the burr number Nspur of the burr power exceeding the threshold power Pthreshold in the bandwidth. Fs e [0, fbm-Fbs ] was scanned and the number Nspur of burrs per each was recorded, and the final selected number of Fs at Nspurmin was denoted as Fsmin. Wherein, threshold power Pthreshold is determined according to the influence on the signal, and is generally selected to be-70 dBc after normalization.
Step 4: by the frequency shifting scheme, burrs are avoided.
By Fsmin obtained in the step 3, flo_alter=fsig-Fsmin can be obtained, and the burr avoidance can be realized by the frequency shifting scheme, so that the influence of the burr on the performance is reduced as much as possible.
Referring to fig. 9, an embodiment of the present application provides a burr avoidance processing apparatus, the apparatus 900 including:
a determining module 901, configured to determine a burr position of the baseband signal;
and a processing module 902, configured to shift the frequency of the baseband signal according to the burr position.
In one embodiment of the present application, the determining module 901 includes:
the acquisition unit is used for respectively acquiring all burr positions before and after the local oscillation frequency is changed;
And the first determining unit is used for determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
In one embodiment of the present application, the processing module includes:
A second determining unit, configured to determine a frequency offset according to the burr position and the bandwidth of the baseband signal;
And the processing unit is used for shifting the frequency of the baseband signal according to the frequency offset.
In one embodiment of the present application, the second determining unit includes:
A first determining subunit, configured to determine a target center frequency according to total power of the glitches in the bandwidth of the baseband signal, or according to a number of glitches in the bandwidth of the baseband signal where the power of the glitches exceeds a threshold power;
And the second determining subunit is used for determining the frequency offset according to the target center frequency and the frequency of the baseband signal.
In one embodiment of the application, the first determining subunit is further configured to:
Dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal; and acquiring the total power of the burrs of each bandwidth part, and determining the center frequency corresponding to the bandwidth part with the minimum total power of the burrs as the target center frequency.
In one embodiment of the application, the first determining subunit is further configured to:
Dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal; and acquiring the burr number of the burr power of each bandwidth part exceeding the threshold power, and determining the center frequency corresponding to the bandwidth part with the minimum burr number as the target center frequency.
The device provided by the embodiment of the application can realize each process realized by the embodiment of the method shown in fig. 3 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.
As shown in fig. 10, an embodiment of the present application further provides a communication device 1000, including a processor 1001, a memory 1002, and a program or an instruction stored in the memory 1002 and capable of running on the processor 1001, where the program or the instruction implements the respective processes of the method embodiment of fig. 3 when executed by the processor 1001, and achieves the same technical effects. In order to avoid repetition, a description thereof is omitted.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the method shown in fig. 3, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The steps of a method or algorithm described in connection with the present disclosure may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, a read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. The processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present application in further detail, and are not to be construed as limiting the scope of the application, but are merely intended to cover any modifications, equivalents, improvements, etc. based on the teachings of the application.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the application may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is also intended to include such modifications and variations.
Claims (8)
1. A burr avoidance processing method applied to a first apparatus, comprising:
determining a spur position of the baseband signal;
shifting the frequency of the baseband signal according to the burr position;
Wherein the determining the spur position of the baseband signal includes:
respectively acquiring all burr positions before and after the local oscillation frequency is changed;
And determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
2. The method of claim 1, wherein said shifting the frequency of the baseband signal according to the spur location comprises:
determining a frequency offset according to the burr position and the bandwidth of the baseband signal;
and shifting the frequency of the baseband signal according to the frequency offset.
3. The method of claim 2, wherein determining a frequency offset based on the spur location and the bandwidth of the baseband signal comprises:
Determining a target center frequency according to the total power of burrs in the bandwidth of the baseband signal or according to the quantity of burrs, exceeding a threshold power, of the burr power in the bandwidth of the baseband signal;
and determining a frequency offset according to the target center frequency and the frequency of the baseband signal.
4. A method according to claim 3, wherein determining the target center frequency based on the total power of the spur in the bandwidth of the baseband signal comprises:
dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal;
and acquiring the total power of the burrs of each bandwidth part, and determining the center frequency corresponding to the bandwidth part with the minimum total power of the burrs as the target center frequency.
5. The method of claim 3, wherein determining the center frequency of the baseband signal based on the number of spurs having a spur power exceeding a threshold power within the bandwidth of the baseband signal comprises:
dividing the maximum baseband bandwidth supported by the system into a plurality of bandwidth parts according to the bandwidth of the baseband signal;
And acquiring the burr number of the burr power of each bandwidth part exceeding the threshold power, and determining the center frequency corresponding to the bandwidth part with the minimum burr number as the target center frequency.
6. A burr avoidance processing device, comprising:
A determining module for determining a burr position of the baseband signal;
The processing module is used for shifting the frequency of the baseband signal according to the burr position;
wherein the determining module comprises:
the acquisition unit is used for respectively acquiring all burr positions before and after the local oscillation frequency is changed;
And the first determining unit is used for determining the burr position of the baseband signal according to all burr positions before and after the local oscillation frequency is changed.
7. A communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which program or instruction when executed by the processor implements the steps of the method according to any of claims 1 to 5.
8. A readable storage medium, characterized in that it stores thereon a program or instructions, which when executed by a processor, implement the steps of the method according to any of claims 1 to 5.
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| US10284332B2 (en) * | 2017-03-03 | 2019-05-07 | Intel IP Corporation | Spur cancelation using inverse spur injection |
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