CN114598337A - Anti-interference method of zero intermediate frequency terminal, terminal and storage medium - Google Patents
Anti-interference method of zero intermediate frequency terminal, terminal and storage medium Download PDFInfo
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- CN114598337A CN114598337A CN202011411770.7A CN202011411770A CN114598337A CN 114598337 A CN114598337 A CN 114598337A CN 202011411770 A CN202011411770 A CN 202011411770A CN 114598337 A CN114598337 A CN 114598337A
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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
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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
- H04B1/16—Circuits
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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
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Abstract
The application discloses an anti-interference method of a zero intermediate frequency terminal, the terminal and a storage medium, wherein the method comprises the following steps: judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value or not; if yes, reducing the intensity of the radio frequency signal; acquiring the signal error rate of the processed radio frequency signal, and judging whether the signal error rate is greater than a second preset threshold value; if so, adjusting the power of the anti-interference element to perform anti-interference processing on the processed radio-frequency signal. By the method, the anti-interference performance of the terminal can be improved.
Description
Technical Field
The present application relates to the field of communications, and in particular, to an anti-interference method for a zero intermediate frequency terminal, a terminal, and a storage medium.
Background
Zero-if reception techniques, i.e., the received rf signal is not converted to an intermediate frequency, but is directly converted to an analog baseband In-phase/Quadrature (I/Q) signal at a time, and then demodulated. The terminal adopting the zero intermediate frequency receiving technology, referred to as a zero intermediate frequency terminal for short, can omit circuits such as an intermediate frequency filter, an intermediate frequency amplifier and the like in a traditional superheterodyne receiver, so that the zero intermediate frequency terminal has great advantages in the aspects of cost and volume.
At present, a zero intermediate frequency terminal is not ideal enough in terms of anti-interference performance, so that the phenomenon of communication blocking interference can occur more easily in the zero intermediate frequency terminal, and further application of the zero intermediate frequency terminal is greatly limited.
Therefore, how to improve the anti-interference performance of the zero intermediate frequency terminal has very important significance.
Disclosure of Invention
The application provides an anti-interference method of a zero intermediate frequency terminal, the terminal and a storage medium.
The first aspect of the present application provides an anti-interference method for a zero intermediate frequency terminal, including: judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value or not; if yes, reducing the intensity of the radio frequency signal; acquiring the signal error rate of the processed radio frequency signal, and judging whether the signal error rate is greater than a second preset threshold value; and if so, adjusting the power of the anti-interference element so as to perform anti-interference processing on the processed radio-frequency signal.
A second aspect of the present application provides a zero intermediate frequency terminal, which includes a radio frequency receiving circuit, a signal adjusting circuit, a signal error rate detecting circuit and a signal processing circuit; the radio frequency receiving circuit is used for receiving radio frequency signals; the signal adjusting circuit is used for carrying out intensity reduction processing on the received radio frequency signal; the signal error rate detection circuit is used for acquiring the signal error rate of the processed radio frequency signal and judging whether the signal error rate is greater than a second preset threshold value or not; and the signal processing circuit is used for receiving the control signal sent by the signal error rate detection circuit and adjusting the power of the anti-interference element under the condition that the signal error rate is greater than a second preset threshold value so as to perform anti-interference processing on the processed radio-frequency signal.
A third aspect of the present application provides a terminal, where the terminal includes a memory and a processor, which are coupled to each other, and the processor is configured to execute program instructions stored in the memory to implement the interference rejection method for the zero intermediate frequency terminal described in the foregoing embodiment of the first aspect.
A fourth aspect of the present application provides a computer-readable storage medium, where a computer program capable of being executed by a processor is stored, and the computer program is configured to implement the interference rejection method for the zero intermediate frequency terminal described in the foregoing first aspect.
Compared with the prior art, the beneficial effects of this application are: according to the method, the anti-interference performance is improved step by step according to the actual use environment of the terminal, the received radio-frequency signal is subjected to intensity reduction treatment, the signal error rate is used as the basis for measuring the quality of the processed radio-frequency signal, under the condition that the signal error rate is greater than the second preset threshold value, the anti-interference treatment is carried out by adjusting the power of the anti-interference element, the anti-interference performance of the terminal can be further enhanced according to the actual condition of the signal error rate, and the anti-interference effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a first embodiment of an anti-jamming method for a zero intermediate frequency terminal according to the present application;
FIG. 2 is a flowchart illustrating an anti-jamming method for a zero intermediate frequency terminal according to a second embodiment of the present application
Fig. 3 is a schematic block diagram of a first embodiment of the zero intermediate frequency terminal of the present application;
FIG. 4 is a block diagram of an electronic terminal according to the present application;
FIG. 5 is a block diagram of an embodiment of a computer readable storage device according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
Referring to fig. 1, fig. 1 is a schematic flowchart of a first embodiment of an anti-interference method for a zero intermediate frequency terminal according to the present application.
Step S11: and judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value.
A terminal applying the zero intermediate frequency technology may be defined as a zero intermediate frequency terminal. The zero intermediate frequency terminal is, for example, a radio communication device such as a walkie-talkie, a mobile phone, etc.
For a zero intermediate frequency terminal (hereinafter referred to as a terminal), when the terminal receives a useful signal, if strong interference of adjacent frequencies (for example, radio frequency signals sent by other terminals) also enters a high-frequency amplifier or a mixer of the receiver at the same time, a saturation phenomenon occurs in the high-frequency amplifier or the mixer stage, that is, the terminal is interfered, so that demodulation output noise of the terminal is increased, sensitivity is reduced, and when the terminal is serious, communication is interrupted. The Strength of the radio frequency Signal can be represented by a Received Signal Strength Indication (RSSI). For the terminal, a signal strength detection unit may be disposed at the terminal, so as to determine the strength of the radio frequency signal received by the terminal.
Therefore, the terminal can determine whether the anti-interference processing is needed or not based on the strength of the received radio frequency signal and judge the strength of the signal.
The first preset threshold is, for example, -90dBm, and for example, when the RSSI value of the radio frequency signal is greater than-90 dBm, it can be considered that the received signal of the terminal is stronger, and the terminal can perform anti-interference processing to improve the communication performance. The setting of the first preset threshold is not limited, and can be adjusted according to actual conditions.
When the strength of the radio frequency signal is greater than the first preset threshold, step S12 may be performed. Step S12: and carrying out intensity reduction processing on the received radio frequency signal.
Through the processing of reducing the intensity to radio frequency signal, can strengthen the interference immunity of terminal, promote the anti-interference effect of terminal. In an embodiment, the processing for reducing the strength of the radio frequency signal may specifically include performing attenuation processing on the received radio frequency signal and/or performing amplitude limiting processing on the received radio frequency signal. The received radio frequency signal is attenuated, for example, by an attenuator, such as by reducing a 5 decibel-milliwatt (dBm) signal to-5 dBm via a 10dB attenuator. The clipping process is performed to the rf signal, that is, all instantaneous values of the rf signal strength exceeding a predetermined threshold are attenuated to be close to the threshold, and all other instantaneous values are retained. For example, if the predetermined threshold value is 0dBm and the instantaneous value of the received rf signal strength is 5dBm at the maximum, the signal strength above 5dBm can be reduced to 0dBm by the clipping process.
For the terminal, a signal strength adjusting unit may be disposed in the terminal, so as to adjust the strength of the radio frequency signal received by the terminal.
Step S13: and acquiring the signal error rate of the processed radio frequency signal, and judging whether the signal error rate is greater than a second preset threshold value.
After the radio frequency signal is subjected to intensity reduction processing, whether the anti-interference performance of the terminal meets the requirement or not can be measured through the signal error rate of the processed radio frequency signal. The signal error rate is used to indicate the accuracy of the data transmission, and the signal error rate is at least one of a bit error rate or a block error rate.
For example, the error rate of the processed radio frequency signal may be obtained, and it may be determined whether the error rate is greater than a second preset threshold. When the error rate is greater than a second preset threshold, the anti-interference performance of the terminal can be considered to not meet the requirement; and when the error rate is smaller than a second preset threshold, the anti-interference performance of the terminal can be considered to meet the requirement. The second preset threshold is, for example, 1%, 2%, etc., and the setting of the second preset threshold is not limited and may be adjusted according to actual situations.
In one embodiment, the signal error rate includes an average signal error rate within a predetermined time range, such as an average bit error rate or an average block error rate within a predetermined time range. In a specific implementation scenario, whether the anti-interference performance of the terminal meets the requirement or not may be measured by determining the average bit error rate within a preset time range. For example, the error rate of the terminal within 3 seconds, or the average error rate within 2 seconds may be determined. By determining the average bit error rate within the preset time range, the problem that the anti-interference performance needs to be enhanced when the terminal judges the error caused by the large bit error rate due to other reasons (such as the jitter of the radio frequency signal) can be reduced, that is, the misjudgment of the terminal can be reduced, and the reliability of the terminal in the aspect of anti-interference is improved.
In an embodiment, whether the anti-interference performance of the terminal meets the requirement may also be measured by determining a Block Error Rate (Block Error Rate) of the processed radio frequency signal. The preset threshold corresponding to the block error rate is, for example, 2%, and similarly, the setting of the second preset threshold related to the block error rate is not limited, and may be adjusted according to the actual situation.
When the signal error rate is greater than the second preset threshold, the current anti-interference performance of the terminal cannot meet the requirement, and at the moment, the anti-interference performance of the terminal can be continuously enhanced. For example, step S14 is performed.
Step S14: and adjusting the power of the anti-interference element so as to perform anti-interference processing on the processed radio-frequency signal.
When the anti-interference performance of the terminal needs to be further enhanced, the anti-interference performance can be achieved by adjusting the power of the anti-interference element, specifically, the power of the anti-interference element can be increased, so that the anti-interference processing is performed on the radio-frequency signal with the reduced strength after the processing. The power of the interference suppression element is increased, for example, by increasing the current of the interference suppression element. A tamper-resistant element is understood to be a circuit element that can affect the tamper-resistant performance of the terminal, and may include, for example, a programmable gain amplifier and a frequency divider. Specifically, the current of one of the programmable gain amplifier and the frequency divider can be increased, or the current of both can be increased. It will be appreciated that in the present application, the interference rejection element may have other functions besides enhancing the interference rejection performance of the terminal, for example, a programmable gain amplifier may perform gain control on the radio frequency signal.
Therefore, the scheme performs anti-interference step by step, the received radio frequency signal is subjected to intensity reduction processing, then the signal error rate is used as a basis for measuring the quality of the radio frequency signal subjected to intensity reduction processing, and under the condition that the signal error rate is greater than a second preset threshold value, the anti-interference processing is performed by adjusting the power of the anti-interference element, so that the anti-interference performance of the terminal can be further enhanced according to the actual condition of the signal error rate, and the anti-interference effect is improved.
Referring to fig. 2, fig. 2 is a schematic flowchart of a second embodiment of an anti-interference method for a zero intermediate frequency terminal according to the present application. The present embodiment is a further extension of the previous embodiment, and specifically, may include the following steps:
step S21: and judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value.
For a detailed description of this step, please refer to step S11, which is not described herein again.
When the strength of the radio frequency signal is not greater than the first preset threshold, step S22 may be executed; when the strength of the radio frequency signal is greater than the first preset threshold, step S23 may be performed.
Step S22: the power of the anti-interference element is reduced.
When the strength of the radio frequency signal is smaller than a first preset threshold value, the terminal can be considered to be receiving a weak signal, and at the moment, anti-interference processing is not performed, so that the influence on the communication performance of the terminal due to the fact that the signal is too weak is reduced. In this case, the power of the immunity element, in particular the current of the immunity element, for example the current of the programmable gain amplifier and the frequency divider, may be reduced. Specifically, the current of only one of the programmable gain amplifier and the frequency divider may be reduced, or the current of both may be reduced.
Through reducing the power of anti-interference component, can reduce the consumption at terminal, promote the continuation of the journey level at terminal.
Step S23: the received radio frequency signal is processed to reduce the strength.
When the strength of the radio frequency signal is greater than a first preset threshold value, the terminal can be considered to receive a signal strongly, and a zero intermediate frequency anti-interference promotion strategy can be started. In this case, the radio frequency signal may be subjected to a process for reducing the intensity, such as an attenuation process or a clipping process. For a detailed description of the attenuation or clipping process, please refer to the related description in step S11, and the description thereof is omitted here.
Step S24: and acquiring the signal error rate of the processed radio frequency signal, and judging whether the signal error rate is greater than a second preset threshold value.
Please refer to the related description in step S12, which is not described herein.
When the signal error rate is not greater than the second preset threshold, it may be considered that the interference rejection performance of the terminal after the strength reduction process has satisfied the requirement, and then step S25 may be executed. When the signal error rate is greater than the second preset threshold, that is, after the radio frequency signal is subjected to the strength reduction processing, the anti-interference performance of the terminal still cannot meet the requirement, at this time, step S26 may be executed.
Step S25: the power of the anti-interference element is reduced.
Please refer to the related description in step S22, which is not described herein.
Step S26: and the power of the anti-interference element is increased.
Please refer to the related description in step S13, which is not described herein.
After step S25 or step S26, since the strength of the signal received by the terminal may change, the determination of whether the terminal needs to continue the interference rejection procedure may be continued by determining the strength of the received signal. Therefore, after step S25 or step S26, step S27 may be continuously performed.
Step S27: and judging whether the intensity of the received radio frequency signal is smaller than a third preset threshold value.
When the strength of the received radio frequency signal is not less than the third preset threshold, the condition of the terminal needs to be further judged.
In one embodiment, the third preset threshold may be the same as the second threshold. In another embodiment, the third preset threshold may be less than the second threshold.
When the strength of the received radio frequency signal is not less than the third preset threshold, the strength condition of the signal received by the terminal needs to be further judged. At this time, step S21 may be executed again to determine whether the interference rejection performance of the terminal needs to be enhanced.
When the strength of the received radio frequency signal is smaller than the third preset threshold, the strength of the received signal at this time can be considered to be too weak, and the anti-interference processing steps can be all closed, so as to reduce the influence on the communication performance of the terminal due to the too weak signal. At this time, step S28 may be performed.
Step S28: canceling the intensity reduction processing of the received radio frequency signal; and/or, reducing power to the tamper resistant element.
When the strength of the received radio frequency signal is smaller than a third preset threshold, the received signal strength at this time can be considered to be too weak, and the anti-interference method needs to be closed, so as to reduce the influence of the too weak signal on the communication performance of the terminal. The processing to reduce the strength of the received rf signal may be eliminated and/or the power of the anti-jamming element may be reduced.
The cancellation of the received rf signal for strength reduction may be specifically determined according to the processing performed on the received rf signal in step S23. For example, in step S23, when the process of reducing the intensity is the attenuation process of the radio frequency signal, the process of canceling the reduction is the attenuation process no longer performed; when the intensity reduction processing is to perform amplitude limiting processing on the radio frequency signal, the intensity reduction processing is cancelled, and the amplitude limiting processing is not performed on the radio frequency signal any more.
The power of the interference suppression element, in particular the current of the interference suppression element, is reduced. Through reducing the power of anti-interference component, can reduce the consumption at terminal, promote the continuation of the journey level at terminal.
According to the scheme, anti-interference is carried out step by step, the received radio-frequency signals are subjected to intensity reduction processing, then the signal error rate is utilized as the quality index of the processed radio-frequency signals, and under the condition that the signal error rate is larger than the second preset threshold value, anti-interference processing is carried out by adjusting the power of the anti-interference element, so that the anti-interference performance of the terminal can be further enhanced according to the actual condition of the signal error rate, and the anti-interference effect is improved.
Referring to fig. 3, fig. 3 is a schematic diagram of a framework of a first embodiment of the zero intermediate frequency terminal of the present application. In the present embodiment, the zero intermediate frequency terminal 30 includes a signal strength detection circuit 31, a radio frequency reception circuit 32, a signal adjustment circuit 33, a signal error rate detection circuit 34, and a signal processing circuit 35. The signal strength detection circuit 31 is configured to determine whether the strength of the received rf signal is greater than a first preset threshold. When the intensity of the rf signal is greater than the first preset threshold, a control signal is sent out, so that the signal adjusting circuit 33 performs intensity reduction processing on the rf signal. A radio frequency receiving circuit 32. The signal conditioning circuit 33 is used to perform a strength reduction process on the received rf signal. The signal error rate detection circuit 34 is configured to obtain a signal error rate of the processed rf signal, and determine whether the signal error rate is greater than a second preset threshold. The signal processing circuit 35 is configured to receive a control signal sent by the signal error rate detection circuit when the signal error rate is greater than a second preset threshold, and adjust the power of the anti-interference element, so as to perform anti-interference processing on the processed radio frequency signal.
Optionally, the signal adjusting circuit 33, where the signal adjusting circuit 33 is configured to perform the intensity reduction process on the received radio frequency signal, specifically including: judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value or not; if yes, the intensity of the radio frequency signal is reduced.
Optionally, the intensity reduction process includes at least one of: carrying out attenuation processing on the radio frequency signal; and carrying out amplitude limiting processing on the radio frequency signal.
Optionally, the signal processing circuit 35 is configured to adjust a power of an anti-interference element, so as to perform anti-interference processing on the processed radio frequency signal, and specifically includes: and the power of the anti-interference element is increased. After the signal error rate detection circuit 34 determines whether the signal error rate is greater than the second preset threshold, if the signal error rate is not greater than the second preset threshold, a control signal is sent out, so that the signal processing circuit 35 reduces the power of the anti-interference element.
Optionally, the signal error rate includes: average signal error rate within a preset time range.
Optionally, the anti-interference element includes at least one of: programmable gain amplifiers and frequency dividers. The above mentioned power increasing of the anti-interference element includes: the current of the programmable gain amplifier and/or the frequency divider is increased. The above mentioned power reduction of the anti-interference element includes: the current of the programmable gain amplifier and/or the frequency divider is reduced.
Optionally, after the power of the anti-jamming element is increased by the signal processing circuit 35, or after the power of the anti-jamming element is reduced by the signal processing circuit 35, the signal strength detection unit may be further configured to determine whether the strength of the received radio frequency signal is smaller than a third preset threshold. If so, a control signal is sent out, so that the signal conditioning circuit 33 cancels the intensity reduction processing of the received radio frequency signal, and/or the signal processing circuit 35 reduces the power of the anti-interference element. If not, the signal strength detection unit judges whether the strength of the received radio frequency signal is larger than the first preset threshold value again, and other circuits continue to execute subsequent operations.
Optionally, after the signal strength detecting unit is configured to determine whether the strength of the received radio frequency signal is greater than a first preset threshold, if not, the signal strength detecting unit sends a control signal, so that the signal processing circuit 35 reduces the power of the anti-interference element.
Referring to fig. 4, fig. 4 is a schematic diagram of a frame of an electronic terminal according to the present application. The electronic device 40 comprises a memory 41 and a processor 42 coupled to each other, and the processor 42 is configured to execute program instructions stored in the memory 41 to implement the steps of any of the above embodiments of the interference rejection method for a zero intermediate frequency terminal. In one particular implementation scenario, electronic device 40 may include, but is not limited to: a microcomputer, a server, and the electronic device 40 may also include a mobile device such as a notebook computer, a tablet computer, and the like, which is not limited herein.
In particular, processor 42 is configured to control itself and memory 41 to implement the steps of any of the above-described embodiments of the puncture path display method. Processor 42 may also be referred to as a CPU (Central Processing Unit). The processor 42 may be an integrated circuit chip having signal processing capabilities. The Processor 42 may also be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In addition, the processor 42 may be commonly implemented by an integrated circuit chip.
Referring to fig. 5, fig. 5 is a block diagram illustrating an embodiment of a computer readable storage device according to the present application. The storage device 50 stores a computer program 51, which when executed by a processor, is capable of implementing the steps of the interference rejection method for the zero intermediate frequency terminal in any of the embodiments described above.
The computer-readable storage medium storage device may be a medium that can store a computer program, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, or may be a server that stores the computer program, and the server may send the stored computer program to another device for running, or may run the stored computer program by itself.
According to the scheme, anti-interference is carried out through the substep, the received radio frequency signal is subjected to intensity reduction processing, then the signal error rate is utilized as the quality basis of the processed radio frequency signal, and under the condition that the signal error rate is greater than the second preset threshold value, anti-interference processing is carried out through adjusting the power of the anti-interference element, so that the anti-interference performance of the terminal can be further enhanced according to the actual condition of the signal error rate, and the anti-interference effect is improved.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. An anti-interference method for a zero intermediate frequency terminal is characterized by comprising the following steps:
judging whether the intensity of the received radio frequency signal is greater than a first preset threshold value or not;
if yes, reducing the intensity of the radio frequency signal;
acquiring the signal error rate of the processed radio frequency signal, and judging whether the signal error rate is greater than a second preset threshold value;
and if so, adjusting the power of the anti-interference element so as to perform anti-interference processing on the processed radio-frequency signal.
2. The method of claim 1, wherein the reducing the intensity comprises at least one of:
carrying out attenuation processing on the radio frequency signal;
and carrying out amplitude limiting processing on the radio frequency signal.
3. The method of claim 1, wherein said adjusting the power of the immunity element to perform immunity processing on the processed rf signal comprises:
the power of an anti-interference element is increased;
and/or after the determining whether the signal error rate is greater than a second preset threshold, the method further includes:
and if the signal error rate is not greater than a second preset threshold, reducing the power of the anti-interference element.
4. The method of claim 1, wherein the signal error rate comprises at least one of a bit error rate or a block error rate; and/or the presence of a gas in the gas,
the signal error rate includes: average signal error rate within a preset time range.
5. The method of claim 3, wherein the tamper-resistant element comprises at least one of: a programmable gain amplifier and a frequency divider;
the step of increasing the power of the anti-jamming element comprises: increasing the current of the programmable gain amplifier and/or frequency divider;
the reducing power of the anti-jamming element comprises: reducing the current of the programmable gain amplifier and/or the frequency divider.
6. The method of claim 3, wherein after said powering up said immunity element, and/or after said powering down said immunity element, said method further comprises:
judging whether the intensity of the received radio frequency signal is smaller than a third preset threshold value or not;
if yes, canceling the intensity reduction processing of the received radio frequency signal; and/or, reducing the power of the interference rejection element;
if not, the steps of judging whether the intensity of the received radio frequency signal is greater than the first preset threshold value and the subsequent steps are executed again.
7. The method according to any one of claims 1-5, wherein after the determining whether the strength of the received radio frequency signal is greater than the first preset threshold, the method further comprises:
and if not, reducing the power of the anti-interference element.
8. A zero intermediate frequency terminal, comprising:
the radio frequency receiving circuit is used for receiving radio frequency signals;
the signal adjusting circuit is used for reducing the intensity of the received radio frequency signal;
the signal error rate detection circuit is used for acquiring the signal error rate of the processed radio frequency signal and judging whether the signal error rate is greater than a second preset threshold value or not;
and the signal processing circuit is used for receiving the control signal sent by the signal error rate detection circuit and adjusting the power of the anti-interference element under the condition that the signal error rate is greater than a second preset threshold value so as to perform anti-interference processing on the processed radio-frequency signal.
9. An electronic terminal, characterized in that it comprises a memory and a processor coupled to each other, said processor being configured to execute program instructions stored in said memory to implement the interference rejection method of a zero intermediate frequency terminal according to any of claims 1 to 7.
10. A computer readable storage medium having stored thereon program instructions, which when executed by a processor implement the method of interference rejection of a zero intermediate frequency terminal according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411770.7A CN114598337B (en) | 2020-12-03 | 2020-12-03 | Anti-interference method for zero intermediate frequency terminal, terminal and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411770.7A CN114598337B (en) | 2020-12-03 | 2020-12-03 | Anti-interference method for zero intermediate frequency terminal, terminal and storage medium |
Publications (2)
| Publication Number | Publication Date |
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| CN114598337A true CN114598337A (en) | 2022-06-07 |
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