CN113839683A - Method and system for automatically improving out-of-band blocking - Google Patents
Method and system for automatically improving out-of-band blocking Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000001629 suppression Effects 0.000 claims abstract description 99
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- 230000015654 memory Effects 0.000 description 11
- 238000004590 computer program Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0252—Elliptic filters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
Abstract
The invention discloses a method for automatically improving out-of-band blocking, which comprises the steps of configuring a blocking suppression table stored with an association relation between a sideband suppression value and a voltage value; detecting out-of-band peak power; when the voltage peak power is detected to exceed a preset threshold value, searching a corresponding sideband suppression value in a suppression table according to the voltage peak; and controlling the band-pass filter to suppress the blocking signal by using the sideband suppression value. Therefore, the control of the front-end band-pass filter can be completed by using a table look-up method through the detection of the out-of-band power, the suppression of out-of-band signals is realized, in-band signals are improved, and the out-of-band blocking is effectively improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for automatically improving out-of-band blocking.
Background
The out-of-band blocking performance is used as an index for evaluating the receiving performance of the mobile terminal, and is mainly reflected in that the receiving capability of a downlink signal is reduced due to the influence of an out-of-band interference wave. In the existing method for solving the out-of-band blocking, for example, a passive filter is used to suppress the interference signal mainly according to the link budget, but in practical application, the operability is poor, and when there is no interference signal, the insertion loss value in the passband becomes large, and the signal-to-noise ratio of the normal signal is affected.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for automatically improving out-of-band blocking, which can suppress out-of-band signals, improve in-band signals, and effectively improve out-of-band blocking.
In order to solve the above technical problem, a first aspect of the present invention discloses a method for automatically improving out-of-band blocking, where the method includes configuring a blocking suppression table storing an association relationship between a sideband suppression value and a voltage value; detecting out-of-band peak power; when the voltage peak power is detected to exceed a preset threshold value, searching a corresponding sideband suppression value in the suppression table according to the voltage peak; and controlling a band-pass filter to suppress the blocking signal by using the sideband suppression value.
In some embodiments, the band pass filter is an elliptical filter with a plurality of varactors positioned within a stop band of the band pass filter to ground.
In some embodiments, the configuring stores a blocking suppression table that correlates sideband suppression values to voltage values, including: setting a plurality of sideband suppression values, and respectively recording voltage values corresponding to the variable capacitance diodes of the band-pass filter under the action of different sideband suppression values; and establishing an incidence relation between the sideband suppression value and the voltage value to generate a blocking suppression table.
In some embodiments, setting the plurality of sideband suppression values comprises: the sideband suppression values are set to 10db, 20db, 30db and 40db, respectively.
In some embodiments, controlling a band pass filter to suppress blocking signals using the sideband suppression value includes: and setting the sideband suppression value as a DAC value, driving the corresponding varactor to be opened according to the analog voltage value, and generating a capacitance value for suppressing a blocking signal.
According to a second aspect of the present invention, there is provided an automated out-of-band occlusion improvement system, comprising: a band-pass filter; the blocking suppression table stores the correlation between the sideband suppression value and the voltage value; the FPGA module is used for detecting out-of-band peak power, and searching a corresponding sideband suppression value in the suppression table according to the voltage peak when the voltage peak power is detected to exceed a preset threshold value; and the DAC module is used for controlling the band-pass filter to suppress the blocking signal by utilizing the sideband suppression value.
In some embodiments, the band pass filter is an elliptical filter with a plurality of varactors positioned within a stop band of the band pass filter to ground.
In some embodiments, the occlusion suppression table is implemented as: setting a plurality of sideband suppression values, and respectively recording voltage values corresponding to the variable capacitance diodes of the band-pass filter under the action of different sideband suppression values; and establishing an incidence relation between the sideband suppression value and the voltage value to generate a blocking suppression table.
In some embodiments, the setting the plurality of sideband suppression values comprises setting the sideband suppression values to 10db, 20db, 30db, 40db, respectively.
In some embodiments, the DAC module is implemented to set the sideband suppression value to a DAC value, generate a corresponding analog voltage value from the DAC value; the band-pass filter is also used for driving the corresponding variable capacitance diode to be opened according to the analog voltage value and generating a capacitance value for suppressing a blocking signal.
Compared with the prior art, the invention has the beneficial effects that:
the invention can automatically trigger the blocking suppression table which is set in advance only by using the detection of the out-of-band power, is associated with the sideband suppression value for suppressing the blocking corresponding to the out-of-band power which exceeds the set threshold range at present, and then realizes the conversion of the electric signal by using the DAC module, thereby completing the control automatic control of the front-end filter, thereby realizing the suppression of the out-of-band signal and effectively improving the in-band signal.
Drawings
FIG. 1 is a schematic flow chart illustrating an exemplary method for automatically improving out-of-band blocking according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a bandpass filter according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a system for automatically improving out-of-band occlusion according to an embodiment of the present invention;
FIG. 4 is a schematic view of another system for automatically improving out-of-band occlusion according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an automatic improvement out-of-band blocking device according to an embodiment of the present invention.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," and 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 modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a method and a system for automatically improving out-of-band blocking, which can automatically trigger a blocking suppression table set in advance only by using the detection of out-of-band power, associate the blocking suppression table with a sideband suppression value corresponding to the out-of-band power exceeding the set threshold range at present, and realize the conversion of an electric signal by using a DAC (digital-to-analog converter) module to finish the control automatic control of a front-end filter, thereby realizing the suppression of out-of-band signals and effectively improving in-band signals.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for automatically improving out-of-band blocking according to an embodiment of the present invention. The method for automatically improving the out-of-band blocking can be applied to a communication system with the out-of-band blocking, and the application of the method is not limited by the embodiment of the invention. As shown in fig. 1, the method for automatically improving out-of-band occlusion may include the following operations:
Since the current method of suppressing the out-of-band blocking has a large influence on the in-band signal and is not poor in operability, even if the suppression is performed, only a certain out-of-band blocking can be suppressed, and the real-time and operable out-of-band blocking suppression cannot be completed. The inventors here conceived to meet the demand for automated regulation by linking in advance as sufficient sideband suppression values as possible to the voltage values that may occur when out-of-band blocking occurs. Therefore, the congestion suppression table is established here. For the implementation of the blocking suppression table, a plurality of sideband suppression values 10db, 20db, 30db and 40db are set, and the values are found by the inventor according to a large amount of data research and experience that the sideband blocking values which have a high coverage sideband blocking range and do not influence the out-of-band in-band signal of the inventor can effectively improve the in-band signal, and then the voltage values of the band-pass filter under the action of the sideband suppression values are recorded respectively to form the correlation between the sideband suppression values and the voltage values.
In a preferred embodiment, as shown in fig. 2, this embodiment relates to a bandpass filter designed to suppress out-of-band blocking, the bandpass filter is an elliptic filter, the elliptic filter has the smallest passband and stopband fluctuations under the same condition compared with other types of bandpass filters, and a plurality of varactors are disposed in the stopband of the elliptic bandpass filter grounded, so as to provide a plurality of options for coping with different out-of-band blocking for the following.
And 102, detecting out-of-band voltage peak power.
The FPGA is used to detect the out-of-band voltage peak power in real time, for example, the time window in the FPGA may be set to 1ms to monitor the voltage value of the out-of-band wave point, and in other embodiments, the time window set in the ADC module may also be used to detect the out-of-band voltage peak power.
And 103, when the voltage peak power is detected to exceed a preset threshold value, searching a corresponding sideband suppression value in a blocking suppression table according to the voltage peak value.
Because the detected voltage peak power can obtain a corresponding voltage peak value, the preset threshold value can be set according to experience and practical application requirements, because when an interference-free signal exists, redundant interpolation loss can be caused if the detection is always carried out in a pass band, the mode of utilizing the set threshold value to carry out judgment can reduce the interpolation loss of the pass band and obviously improve useful signals; when the voltage value exceeds the preset threshold value, the table look-up operation can be automatically triggered, and the voltage peak value also belongs to the category of the voltage value, so that the voltage peak value directly corresponds to the inhibition value with the incidence relation in the blockage inhibition table.
And 104, controlling the band-pass filter to suppress the blocking signal by using the sideband suppression value.
The side band suppression value is set as a DAC value due to the signal difference between the digital signal and the analog signal, the DAC value is generated into a corresponding analog voltage value according to digital-analog conversion operation, then the analog voltage value is used for driving a corresponding variable capacitance diode arranged in a stop band of the band-pass filter grounded to be opened, and the variable capacitance diode is used for generating a capacitance value used for suppressing a blocking signal, so that the signal is improved. Moreover, due to the design of the controllable out-of-band filter, the operability of the whole stop band suppression is strong, and the combination of the variable capacitance diodes of different out-of-band filters can be set according to different suppression requirements.
Example two
Referring to fig. 3, fig. 3 is a schematic diagram of an automatic out-of-band blocking improvement system according to an embodiment of the present invention. As shown in fig. 3, the automatic out-of-band occlusion improvement system comprises:
a band-pass filter 1, a block suppression table (not shown), an FPGA module 2 and a DAC module 3.
The band-pass filter 1 is an elliptic filter, the elliptic filter has minimum pass band and stop band fluctuation under the condition of summer heat relieving compared with other types of band-pass filters, a plurality of variable capacitance diodes are arranged in the grounded stop band of the elliptic band-pass filter, and various choices for coping with different out-of-band blocking are provided for follow-up.
The blocking suppression table stores a sideband suppression value and voltage value association relation, can be stored in an FPGA module or a DAC module, and does not limit the storage position of the blocking suppression table. The concrete implementation is as follows: firstly, a plurality of sideband suppression values 10db, 20db, 30db and 40db are set, and the values are found by the inventor according to a large amount of data research and experience, the sideband suppression values which are higher in the sideband blocking range and do not influence the self out-of-band in-band signals are covered, so that the in-band signals can be effectively improved, and then the voltage values of the band-pass filters under the action of the sideband suppression values are respectively recorded, and the correlation relationship between the sideband suppression values and the voltage values is formed.
And the FPGA module 2 is used for detecting out-of-band peak power, and searching a corresponding sideband suppression value in the blocking suppression table according to the voltage peak value when the detected voltage peak power exceeds a preset threshold value. The FPGA is used to detect the out-of-band voltage peak power in real time, for example, the time window in the FPGA can be set to 1ms to monitor the voltage value of the out-of-band wave point, in other embodiments, as shown in fig. 4, the time window set in the ADC module 4 can also be used to detect the out-of-band voltage peak power, and the ADC module is connected to the FPGA module 2 and can automatically convert the analog signal into a digital signal for the FPGA module to detect. Because the detected voltage peak power can obtain a corresponding voltage peak value, the preset threshold value can be set according to experience and practical application requirements, because when an interference-free signal exists, redundant interpolation loss can be caused if the detection is always carried out in a pass band, the mode of utilizing the set threshold value to carry out judgment can reduce the interpolation loss of the pass band and obviously improve useful signals; when the voltage value exceeds the preset threshold value, the table look-up operation can be automatically triggered, and the voltage peak value also belongs to the category of the voltage value, so that the voltage peak value directly corresponds to the inhibition value with the incidence relation in the blockage inhibition table.
And the DAC module 3 is used for controlling the band-pass filter to suppress the blocking signal by utilizing the sideband suppression value. The side band suppression value is set as a DAC value due to the signal difference between a digital signal and an analog signal, the DAC value is used for generating a corresponding analog voltage value according to digital-analog conversion operation, then a corresponding variable capacitance diode arranged in a stop band of a band-pass filter which is grounded is driven to be opened by the analog voltage value, and a capacitance value used for suppressing a blocking signal is generated by the variable capacitance diode, so that the signal is improved. Moreover, due to the design of the controllable out-of-band filter, the operability of the whole stop band suppression is strong, and the combination of the variable capacitance diodes of different out-of-band filters can be set according to different suppression requirements.
EXAMPLE III
Referring to fig. 5, fig. 5 is a schematic structural diagram of an automatic out-of-band blocking improvement apparatus according to an embodiment of the present invention. As shown in fig. 5, the apparatus may include:
a memory 601 in which executable program code is stored;
a processor 602 coupled to a memory 601;
Example four
The embodiment of the invention discloses a computer-readable storage medium for storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute the automatic out-of-band blocking improvement method described in the first embodiment.
EXAMPLE five
An embodiment of the present invention discloses a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the method for automatically improving out-of-band blocking described in the first embodiment.
The above-described embodiments are only illustrative, and the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above detailed description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, where the storage medium includes a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM), or other disk memories, CD-ROMs, or other magnetic disks, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the method and system for automatically improving out-of-band blocking disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, which are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for automatically ameliorating out-of-band occlusion, the method comprising:
configuring a blocking suppression table in which an incidence relation between a sideband suppression value and a voltage value is stored;
detecting out-of-band voltage peak power;
when the voltage peak power is detected to exceed a preset threshold value, searching a corresponding sideband suppression value in the blocking suppression table according to the voltage peak value;
and controlling a band-pass filter to suppress the blocking signal by using the sideband suppression value.
2. The method of automatically improving out-of-band blocking according to claim 1, wherein the band pass filter is an elliptical filter and a plurality of varactors are disposed within a stop band to which the band pass filter is grounded.
3. The method of automatically improving out-of-band blocking according to claim 2, wherein configuring a blocking suppression table storing an association of sideband suppression values and voltage values comprises:
setting a plurality of sideband suppression values, and respectively recording voltage values corresponding to the variable capacitance diodes of the band-pass filter under the action of different sideband suppression values;
and establishing an incidence relation between the sideband suppression value and the voltage value to generate a blocking suppression table.
4. The method for automatically improving out-of-band blocking according to claim 3, wherein said setting a plurality of sideband suppression values comprises:
the sideband suppression values are set to 10db, 20db, 30db and 40db, respectively.
5. The method of claim 2, wherein controlling a band pass filter to reject an occlusion signal using the sideband suppression value comprises:
setting the sideband suppression value as a DAC value, and generating a corresponding analog voltage value according to the DAC value;
and driving the corresponding variable capacitance diode to be opened according to the analog voltage value, and generating a capacitance value for suppressing a blocking signal.
6. An automated out-of-band occlusion improvement system, comprising:
a band-pass filter;
the blocking suppression table stores the correlation between the sideband suppression value and the voltage value;
the FPGA module is used for detecting out-of-band voltage peak power, and searching a corresponding sideband suppression value in the blocking suppression table according to the voltage peak when the voltage peak power is detected to exceed a preset threshold value;
and the DAC module is used for controlling the band-pass filter to suppress the blocking signal by utilizing the sideband suppression value.
7. The automatic out-of-band jamming system of claim 6, wherein the band pass filter is an elliptical filter with a plurality of varactors positioned within a stop band to which the band pass filter is grounded.
8. The automated out-of-band occlusion improvement system of claim 7, wherein said occlusion suppression table is implemented as: setting a plurality of sideband suppression values, and respectively recording voltage values corresponding to the variable capacitance diodes of the band-pass filter under the action of different sideband suppression values;
and establishing an incidence relation between the sideband suppression value and the voltage value to generate a blocking suppression table.
9. The system for automatically improving out-of-band congestion of claim 8, wherein the setting the plurality of sideband suppression values comprises:
the sideband suppression values are set to 10db, 20db, 30db and 40db, respectively.
10. The system of claim 6, wherein the DAC module is implemented to set the sideband suppression value to a DAC value, generate a corresponding analog voltage value from the DAC value;
the band-pass filter is also used for driving the corresponding variable capacitance diode to be opened according to the analog voltage value and generating a capacitance value for suppressing a blocking signal.
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Effective date of registration: 20231226 Address after: Building A, Runhui Science and Technology Park, No. 18 Shenzhou Road, Huangpu District, Guangzhou City, Guangdong Province, 510663 (self numbered 301, 3rd floor) Patentee after: Guangzhou New Generation Chip Technology Co.,Ltd. Address before: No.18, Shenzhou Road, Huangpu District, Guangzhou, Guangdong 510656 Patentee before: GUANGDONG NEW GENERATION COMMUNICATION AND NETWORK INNOVATION INSTITUTE |