CN115883001A - Anti-interference method for wireless communication - Google Patents
Anti-interference method for wireless communication Download PDFInfo
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- CN115883001A CN115883001A CN202211573272.1A CN202211573272A CN115883001A CN 115883001 A CN115883001 A CN 115883001A CN 202211573272 A CN202211573272 A CN 202211573272A CN 115883001 A CN115883001 A CN 115883001A
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Abstract
The invention discloses an anti-interference method for wireless communication, which relates to the technical field of communication, and is characterized in that a first original electrical signal of a sending end is collected, a first original electrical signal coding sequence is obtained, a modulator is arranged for generating an initial modulation model, weight parameters of the model are obtained, the first original electrical signal is analyzed through a spectrum analyzer, so that whether the first original electrical signal is interfered or not is judged, an interference signal modulation model generates an anti-interference signal for anti-interference, the error rate is calculated, whether the anti-interference signal is successful or not is judged, an unsuccessful modulator generates a wireless interference signal set to train the modulation model, anti-interference and error rate calculation are carried out again, the error rate is compared with a modulation threshold, and when the error rate is smaller than or equal to the modulation threshold, anti-interference is finished.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an anti-interference method for wireless communication.
Background
With the development of wireless communication technology, the application range of the wireless communication technology is continuously increased, and the application effect is increasingly remarkable, but the wireless communication technology is easily influenced by a plurality of factors such as social environment, natural factors and the like, so that the signal quality of wireless communication is influenced, namely, the anti-interference problem of communication is accompanied since the communication mode of wireless communication is born;
in the prior art, the existing wireless communication is anti-interference, only a single anti-interference signal can be achieved, other wireless interference signals cannot be intelligently screened, and parameters need to be adjusted manually.
Disclosure of Invention
The invention aims to provide an anti-interference method for wireless communication.
The technical problems to be solved by the invention are as follows: different interference signals can be dealt with and different interference resistance can be carried out through continuous training of the modulation model, and wireless interference can be dealt with automatically under the unmanned condition;
an interference rejection method for wireless communication, comprising the steps of:
step one, a receiving end receives a first original electric signal;
step two, analyzing the received first original electric signal to obtain a first original electric signal parameter, and setting a modulation model;
inputting the first original electric signal parameter into a spectrum analyzer to obtain a first original electric signal parameter, inputting the first original electric signal parameter into a modulation model, and judging whether the first original electric signal is interfered;
step four, if the interference is judged, the modulation model generates a dynamic anti-interference signal, and anti-interference processing is carried out on the first original electric signal to obtain an anti-interference signal;
and step five, obtaining the error rate of the anti-interference signals, inputting the error rate into a modulation model, judging whether the interference signals exist or not, if so, randomly generating different interference signal sets by the modulator, analyzing the law of the interference signals in the first original electric signals, and updating the weight parameters of the modulation model.
Further, the process of receiving the first original electric signal by the receiving end includes:
the information required to be transmitted by the transmitting end is recorded as an information source, the information source is converted into a second original electrical signal, the second original electrical signal is converted into a high-frequency signal through the transmitter and is transmitted through the antenna, and the receiving end is provided with a receiver which collects and converts the high-frequency signal of the transmitting end into an intermediate-frequency signal which is recorded as a first original electrical signal.
Further, the process of analyzing the first original electrical signal and setting the modulation model includes:
analyzing the first original electrical signal by using a spectrum analyzer to obtain a parameter of the first original electrical signal, and taking the parameter as a reference;
selecting a modulation mode according to requirements, obtaining an initial value corresponding to the modulation mode, generating an initial modulation model, and setting a weight parameter of the modulation model, wherein a modulation threshold value is arranged in the modulation model.
Further, the process of determining whether the original electrical signal received by the receiving end is interfered includes:
the method comprises the steps of analyzing a collected first original electrical signal through a equipped spectrum analyzer to obtain parameters of the first original electrical signal, comparing the parameters of the first original electrical signal analyzed through the spectrum analyzer with a modulation threshold, judging whether the first original electrical signal is interfered in the transmission process according to a comparison result, and modulating the first original electrical signal through a modulation model to obtain a coding sequence of the first original electrical signal if the first original electrical signal is interfered.
Further, the process of performing anti-interference processing on the first original electric signal includes:
inputting a first original interfered electrical signal into a modulation model, generating a dynamic anti-interference signal by the modulation model, obtaining the modulation model from a corresponding standard constellation diagram, wherein coordinates of the standard constellation diagram are represented by x and y, each constellation point on the standard constellation diagram is represented by i, generating all possible anti-interference signals by the modulation model by using an artificial intelligence anti-sample for anti-interference, generating the narrow-band interference by the first original electrical signal in a wireless transmission process, matching the corresponding anti-interference signals by the standard constellation diagram, and performing frequency spreading on the first original electrical signal by the modulation model simulation by using the matched anti-interference signals to obtain the anti-interference signals.
Further, the process of determining whether the first original anti-interference electric signal still has an interference signal includes:
inputting the first original electrical signal subjected to interference resistance into a modulation model, demodulating the first original electrical signal to obtain a coded sequence of the demodulated first original electrical signal, calculating an error rate according to the obtained coded sequence and the coded sequence of the first original electrical signal, comparing the obtained error rate with a modulation threshold value, judging whether an interference signal exists according to a comparison result, if so, modulating the first original electrical signal again by the modulation model, calculating the error rate, and so on until the anti-interference process of the first original electrical signal is completed.
Compared with the prior art, the invention has the beneficial effects that: the wireless channel anti-interference modulation method provided by the invention can automatically generate corresponding anti-interference signals without personnel participation in the wireless communication process, can automatically and adaptively and intelligently generate optimal anti-interference signals without single manual input of the anti-interference signals, can adapt to various application scenes and has good expanded application capability.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, an interference rejection method for wireless communication includes the following steps:
step one, a receiving end receives a first original electric signal;
step two, analyzing the received first original electric signal to obtain a first original electric signal parameter, and setting a modulation model;
inputting the first original electrical signal parameter into a spectrum analyzer to obtain a first original electrical signal parameter, inputting the first original electrical signal parameter into a modulation model, and judging whether the first original electrical signal is interfered;
step four, if the interference is judged, the modulation model generates a dynamic anti-interference signal, and anti-interference processing is carried out on the first original electric signal to obtain an anti-interference signal;
step five, obtaining the error rate of the anti-interference signal, inputting the error rate into a modulation model, judging whether the interference signal still exists, if so, randomly generating different interference signal sets by a modulator, analyzing the interference signal rule in the first original electric signal, and updating the weight parameter of the modulation model;
the process that the receiving end receives the first original electric signal comprises the following steps:
the information required to be transmitted by the transmitting end is recorded as an information source, the information source is converted into a second original electrical signal, the second original electrical signal is converted into a high-frequency signal through the transmitter and is transmitted through the antenna, and the receiving end is provided with a receiver which collects and converts the high-frequency signal of the transmitting end into an intermediate-frequency signal which is recorded as a first original electrical signal.
It should be further noted that, in the implementation process, the first original electrical signal is analyzed, and the process of setting the modulation model includes:
analyzing the first original electric signal by using a spectrum analyzer to obtain a parameter of the first original electric signal, and taking the parameter as a reference;
selecting a modulation mode according to requirements, obtaining an initial value corresponding to the modulation mode, wherein the initial value can not be 0, generating an initial modulation model, and setting a weight parameter of the modulation model, and the selectable modulation modes are Amplitude Shift Keying (ASK), frequency Shift Keying (FSK), phase Shift Keying (PSK) and Quadrature Amplitude Modulation (QAM), and the initial value refers to the lowest parameter which can keep a normal communication process of a first original electric signal by using the modulation modes;
and a modulation threshold is arranged in the modulation model, and is set to be Y.
It should be further explained that, in the specific implementation process, the process of determining whether the original electrical signal received by the receiving end is interfered includes:
analyzing the collected first original electric signal through an equipped spectrum analyzer to obtain parameters of the first original electric signal, wherein the parameters of the first original electric signal comprise a frequency spectrum and a frequency line, performing double-display on the frequency spectrum and the frequency line, comparing the parameters of the first original electric signal analyzed by the spectrum analyzer with Y, and judging whether the first original electric signal is interfered in the transmission process according to the comparison result, namely judging whether the first original electric signal is interfered in the transmission process, namely
When the parameter of the first original electrical signal is less than or equal to Y, the first original electrical signal is not interfered in the transmission process;
when the parameter of the first original electrical signal is larger than Y, the first original electrical signal is interfered in the transmission process, and the first original electrical signal is modulated through a modulation model to obtain a coding sequence of the first original electrical signal.
It should be further noted that, in the specific implementation process, the process of performing the anti-interference processing on the first original electrical signal includes:
inputting the interfered first original electrical signal into a modulation model, generating a dynamic anti-interference signal by the modulation model, and carrying out anti-interference processing on the first original electrical signal to obtain an anti-interference signal; namely that
Acquiring a modulation model to a corresponding standard constellation diagram, wherein coordinates of the standard constellation diagram are represented by x and y, each constellation point on the standard constellation diagram is represented by i, the modulation model utilizes artificial intelligence to resist a sample to generate all possible anti-interference signals for anti-interference, the wireless interference on a first original electrical signal in a wireless transmission process is narrow-band interference, the standard constellation diagram is matched with the corresponding anti-interference signals, and the modulation model simulates the spread spectrum of the first original electrical signal by utilizing the matched anti-interference signals to obtain a counterinterference signal;
the interference-countering signal at the receiving end can be expressed as:
in the formula: m (t) is the data sequence and p (t) is the PN spreading sequence. The data waveform is a time series of non-overlapping rectangular pulses, each pulse having an amplitude equal to +1 or-1, m (t) in the sequence, each symbol representing a data symbol, and a period of Ts. Each pulse in the p (t) sequence represents a chip, typically a rectangle of amplitude equal to +1 or-1, with a period Tc. The data symbols coincide with the edge transitions of the chips, so the ratio of Ts and Tc is an integer.
The first original electrical signal subjected to modulation model spread spectrum has the characteristics of strong anti-interference performance and low bit error rate, and the specific conditions are as follows:
the first original electrical signal occupies a relatively wide bandwidth during spatial transmission, and the modulation model demodulates the first original electrical signal to restore the useful broadband information signal to a narrowband signal, and extends the undesired signal to a broadband signal, and then extracts the useful signal through a narrowband filtering technique.
Therefore, for various interference signals, due to the non-correlation of the interference signals at a receiving end, only very weak components exist in the demodulated narrow-band signals, and the error rate is high, so that the interference resistance is high.
The process of judging whether the first original electric signal subjected to the interference resistance still has an interference signal comprises the following steps:
specifically, inputting the first original electrical signal subjected to interference rejection into a modulation model, demodulating the first original electrical signal to obtain a coded sequence of the demodulated first original electrical signal, and calculating an error rate, namely the error rate according to the obtained coded sequence and the coded sequence of the first original electrical signal
Comparing the coding sequence of the first original electrical signal with the coding sequence of the modulation signal to obtain the proportion of the error number of the coding sequence corresponding to the first original electrical signal to the length of the total coding sequence, and calculating to obtain an error rate C;
for example, the following steps are carried out: assume that the first original electrical signal encoding sequence is: 0110001011, and the demodulated first original electrical signal encoding sequence is: 0010101001;
comparing the demodulated first original electrical signal with the demodulated first original electrical signal, wherein the number of error codes is 3;
bit error rate C =30%;
when C is less than or equal to Y, completing the anti-interference of wireless communication, demodulating through a demodulator, and converting into a first original electric signal;
and when C is larger than Y, the modulation model modulates the first original electric signal again and calculates the error rate, when the C is larger than the threshold value of the modulation model again, the above processes are repeated in a circulating mode, and the like, until the modulated C is smaller than or equal to Y, the anti-interference process of the first original electric signal is finished.
The modulator is internally provided with a communication module which is used for simulating the whole communication process of sending, channel interference and receiving of a modulation signal generated by a modulation model, and the communication module also comprises a sending submodule, a channel submodule and a receiving submodule, wherein the sending submodule is used for sending simulation of the modulation signal, the channel submodule is used for carrying out simulation of channel interference on the sent modulation signal, and the receiving submodule is used for receiving simulation of the modulated signal after interference and demodulating the received signal;
the process of modulating the first original electrical signal again by the modulation model comprises the following steps:
inputting the first original electrical signal subjected to interference resistance into a modulation model, randomly generating different interference signal sets in a modulator, analyzing an interference rule in the first original electrical signal, and then training the modulation model, wherein the interference signal sets comprise frequency interference, adjacent channel interference, out-of-band interference, intermodulation interference and blocking interference;
by introducing randomness, the instability or deviation phenomenon of the modulation model can be greatly relieved or even eliminated in a statistical sense, and the modulator can update the weight parameters of the modulation model through training so as to improve the anti-interference capability of the modulation model.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (6)
1. An interference rejection method for wireless communication, comprising the steps of:
step one, a receiving end receives a first original electric signal;
step two, analyzing the received first original electric signal to obtain a first original electric signal parameter, and setting a modulation model;
inputting the first original electric signal parameter into a spectrum analyzer to obtain a first original electric signal parameter, inputting the first original electric signal parameter into a modulation model, and judging whether the first original electric signal is interfered;
step four, if the interference is judged, the modulation model generates a dynamic anti-interference signal, and anti-interference processing is carried out on the first original electric signal to obtain an anti-interference signal;
and step five, obtaining the error rate of the anti-interference signals, inputting the error rate into a modulation model, judging whether the interference signals exist or not, if so, randomly generating different interference signal sets by the modulator, analyzing the law of the interference signals in the first original electric signals, and updating the weight parameters of the modulation model.
2. The interference rejection method for wireless communication according to claim 1, wherein said receiving end receiving a first original electrical signal comprises:
the information required to be transmitted by the transmitting end is recorded as an information source, the information source is converted into a second original electrical signal, the second original electrical signal is converted into a high-frequency signal through the transmitter and is transmitted through the antenna, and the receiving end is provided with a receiver which collects and converts the high-frequency signal of the transmitting end into an intermediate-frequency signal which is recorded as a first original electrical signal.
3. The interference rejection method for wireless communication according to claim 2, wherein the first original electrical signal is analyzed, and the process of setting the modulation model comprises:
analyzing the first original electrical signal by using a spectrum analyzer to obtain a parameter of the first original electrical signal, and taking the parameter as a reference;
selecting a modulation mode according to requirements, obtaining an initial value corresponding to the modulation mode, generating an initial modulation model, and setting a weight parameter of the modulation model, wherein a modulation threshold value is arranged in the modulation model.
4. The method of claim 3, wherein the step of determining whether the original electrical signal received by the receiving end is interfered comprises:
the acquired first original electrical signal is analyzed through the equipped spectrum analyzer to obtain parameters of the first original electrical signal, the parameters of the first original electrical signal analyzed through the spectrum analyzer are compared with a modulation threshold, whether the first original electrical signal is interfered in the transmission process or not is judged according to a comparison result, and if the first original electrical signal is interfered, the first original electrical signal is modulated through the modulation model to obtain a coding sequence of the first original electrical signal.
5. The interference rejection method for wireless communication according to claim 4, wherein said interference rejection processing of the first raw power signal comprises:
inputting a first original interfered electric signal into a modulation model, generating a dynamic anti-interference signal by the modulation model, obtaining the modulation model from a corresponding standard constellation diagram, wherein coordinates of the standard constellation diagram are represented by x and y, each constellation point on the standard constellation diagram is represented by i, generating all possible anti-interference signals by the modulation model by using an artificial intelligence anti-sample for anti-interference, subjecting the first original electric signal to narrow-band interference in a wireless transmission process, matching the standard constellation diagram with the corresponding anti-interference signal, and performing frequency spreading on the first original electric signal by the modulation model simulation by using the matched anti-interference signal to obtain the anti-interference signal.
6. The interference rejection method for wireless communication according to claim 5, wherein the step of determining whether the interference-rejected first original electric signal still has an interference signal comprises:
inputting the first original electrical signal subjected to interference resistance into a modulation model, demodulating the first original electrical signal to obtain a coded sequence of the demodulated first original electrical signal, calculating an error rate according to the obtained coded sequence and the coded sequence of the first original electrical signal, comparing the obtained error rate with a modulation threshold value, judging whether an interference signal exists according to a comparison result, if so, modulating the first original electrical signal again by the modulation model, calculating the error rate, and so on until the anti-interference process of the first original electrical signal is completed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116506040A (en) * | 2023-06-27 | 2023-07-28 | 西安晟昕科技股份有限公司 | Evaluation method for signal defense of electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116506040A (en) * | 2023-06-27 | 2023-07-28 | 西安晟昕科技股份有限公司 | Evaluation method for signal defense of electronic equipment |
| CN116506040B (en) * | 2023-06-27 | 2023-09-05 | 西安晟昕科技股份有限公司 | Evaluation method for signal defense of electronic equipment |
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Application publication date: 20230331 |