CN115865128A - Anti-interference method and system applied to wireless communication - Google Patents
Anti-interference method and system applied to wireless communication Download PDFInfo
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Abstract
The utility model provides an anti-interference method and system applied to wireless communication, relating to the technical field of wireless communication, wherein the method comprises the following steps: acquiring a first signal set to be transmitted; determining a signal transmission channel, a signal transmission source and a signal receiving source of the first signal set to be transmitted; obtaining a first interference immunity; acquiring a preset security level of the first signal set to be transmitted; judging whether an anti-interference processing model is activated or not, and inputting the first signal set to be transmitted into the anti-interference processing model if the anti-interference processing model is activated; carrying out template spread spectrum processing on the first signal set to be transmitted, and outputting a spread spectrum signal set; the spread spectrum signal set is sent to the signal receiving source for signal restoration processing, and the technical problems that in the prior art, due to the fact that one-time transmission and one-time decoding restoration methods are adopted, the anti-interference effect is poor and the signal quality of wireless communication is not high are solved.
Description
Technical Field
The present disclosure relates to the field of wireless communications technologies, and in particular, to an anti-interference method and system for wireless communications.
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 quality is easily influenced by a plurality of factors such as environment and natural factors, and the signal quality of the wireless communication is influenced. Since the birth of communication systems such as wireless communication, it can be said that the interference resistance problem of communication is accompanied.
At present, in the prior art, due to the fact that a one-time transmission method and a one-time decoding and restoring method are adopted, the anti-interference effect is poor, and the signal quality of wireless communication is not high.
Disclosure of Invention
The disclosure provides an anti-interference method and system applied to wireless communication, and aims to solve the technical problems that in the prior art, due to the fact that a one-time transmission method and a one-time decoding and restoring method are adopted, the anti-interference effect is poor, and the signal quality of the wireless communication is not high.
According to a first aspect of the present disclosure, an anti-interference method applied to wireless communication is provided, including: acquiring a first signal set to be transmitted; determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device; analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain a first anti-interference performance; acquiring a preset security level of the first signal set to be transmitted; analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether an anti-interference processing model is activated or not, and inputting the first signal set to be sent into the anti-interference processing model if the anti-interference processing model is activated; performing template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model, and outputting a spread spectrum signal set; and sending the spread spectrum signal set to the signal receiving source, and performing signal restoration processing based on the signal receiving source.
According to a second aspect of the present disclosure, there is provided an anti-jamming system applied to wireless communication, including: the device comprises a signal to be transmitted acquisition module, a signal to be transmitted acquisition module and a signal to be transmitted acquisition module, wherein the signal to be transmitted acquisition module is used for acquiring a first signal set to be transmitted; the signal transmission analysis module is used for determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device; the anti-interference acquisition module is used for analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain first anti-interference; the security level acquisition module is used for acquiring a preset security level of the first signal set to be transmitted; the anti-interference processing model activation module is used for analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether the anti-interference processing model is activated or not, and inputting the first signal set to be transmitted into the anti-interference processing model if the anti-interference processing model is activated; the spread spectrum processing module is used for carrying out template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model and outputting a spread spectrum signal set; and the signal restoration processing module is used for sending the spread spectrum signal set to the signal receiving source and carrying out signal restoration processing based on the signal receiving source.
According to the anti-interference method applied to wireless communication, a first signal set to be transmitted is obtained; determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device; analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain a first anti-interference performance; acquiring a preset security level of the first signal set to be sent; analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether an anti-interference processing model is activated or not, and inputting the first signal set to be sent into the anti-interference processing model if the anti-interference processing model is activated; performing template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model, and outputting a spread spectrum signal set; and sending the spread spectrum signal set to the signal receiving source, and carrying out signal restoration processing based on the signal receiving source. According to the method, the anti-interference analysis is carried out on the signal to be transmitted, whether anti-interference processing is required or not is determined based on the preset security level, the spread spectrum processing is carried out on the signal to be transmitted by adopting two spread spectrum technologies of frequency modulation spread spectrum and direct sequence spread spectrum in the anti-interference processing, and the demodulation and restoration are carried out on the signal receiving source, so that the technical effects of improving the anti-interference performance and improving the communication quality of wireless communication are achieved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
To more clearly illustrate the disclosure or prior art solutions, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only exemplary, and that other drawings can be obtained by those skilled in the art without inventive effort from the provided drawings.
Fig. 1 is a schematic flowchart of an anti-interference method applied to wireless communication according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a process of performing spread spectrum processing by an anti-interference processing model according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating demodulation and recovery of a spread spectrum signal set according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an anti-interference system applied to wireless communication according to an embodiment of the present invention.
Description of reference numerals: the system comprises a signal to be transmitted acquisition module 11, a signal transmission analysis module 12, an anti-interference acquisition module 13, a security level acquisition module 14, an anti-interference processing model activation module 15, a spread spectrum processing module 16 and a signal restoration processing module 17.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
In order to solve the technical problems that in the prior art, due to the fact that one-time transmission and one-time decoding reduction methods are adopted, the anti-interference effect is poor, and the signal quality of wireless communication is not high, the inventor obtains the anti-interference method and system applied to the wireless communication through creative labor.
Example one
Fig. 1 is a diagram of an anti-interference method applied to wireless communication according to an embodiment of the present application, where the method is applied to a communication anti-interference system, and the system is communicatively connected to a signal transceiver, as shown in fig. 1, the method includes:
step S100: acquiring a first signal set to be transmitted;
specifically, the first set of signals to be transmitted includes all radio signals to be transmitted, specifically including electromagnetic wave signals, microwave signals, and the like, that is, the information to be transmitted may be sound information, image information, text information, and the like, and these information are converted into radio signals, thereby obtaining the first set of signals to be transmitted.
Step S200: determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device;
specifically, the signal transceiver is a device for transmitting and receiving signals, and is responsible for transmitting a signal to be transmitted to a receiving end and receiving the transmitted signal from the receiving end, and the signal transceiver is in communication connection with a communication anti-interference system to realize interactive transmission of data. The signal transmission channel refers to a path of a signal between a transmitting end and a receiving end, for radio waves, the signal is transmitted from the transmitting end to the receiving end, there is no physical connection therebetween, there may be more than one propagation path, and in a simple word, there is an invisible link between the two, which is collectively referred to as a signal transmission channel, the signal transmitting source refers to a signal transmitting device, the signal receiving source refers to a device for receiving a transmission signal, such as a and B for performing telephone communication, for example, if a speaks to B, the talking device of a is the signal transmitting source, the talking device of B is the signal receiving source, a voice signal is converted into a radio signal, and the transmission path of the radio signal in the air is the signal transmission channel.
Step S300: analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain a first anti-interference performance;
wherein, step S300 in the embodiment of the present application further includes:
step S310: analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain transmission safety, transmission safety and receiving safety;
step S320: evaluating the transmission security, the sending security and the receiving security, and outputting a first security factor;
step S330: generating the first immunity with the first safety factor.
Specifically, a signal transmission channel, a signal transmission source and a signal reception source are analyzed to obtain a first anti-interference performance, wherein the interference refers to damage to a signal, and the anti-interference performance is to resist, reduce or eliminate the damage to the signal as much as possible.
Specifically, a signal transmission channel is analyzed to obtain transmission security, where the transmission security refers to damage that may be caused when a signal is transmitted, and a propagation medium of a wireless signal is air, because uncertainty of a propagation environment may seriously affect signal quality, and even may cause invalid transmission results of the signal, such as attenuation of the signal in a propagation process, interference of other noises, and the like, for example, noise generated during a call. Then, the signal transmitting source is analyzed, the damage of the wireless signal to the signal during transmission is analyzed, the transmission safety is obtained, then, the signal receiving source is analyzed, the damage of the signal receiving end to the signal is analyzed, and the receiving safety is obtained, such as the interference of the surrounding similar devices to the transmission and the receiving of the signal. The transmission safety, the transmission safety and the receiving safety are further combined for evaluation, a first safety factor is output, the first safety factor represents the possible damage degree of the wireless signal in the whole transmission, transmission and receiving processes, the greater the damage of the wireless signal in the transmission, transmission and receiving processes is, the lower the first safety factor is, and a first anti-interference performance is generated according to the first safety factor, wherein the lower the first safety factor is, the greater the damage of the wireless signal is, the higher the corresponding first anti-interference performance is, so that the loss of the wireless signal is accurately analyzed, and the technical effect of providing basic data for subsequent anti-interference is achieved.
Step S400: acquiring a preset security level of the first signal set to be transmitted;
specifically, the preset security level is determined according to the purpose of the first to-be-transmitted signal set, for example, daily communication (including calling, sending information and the like) of ordinary people may not need to be kept secret, the preset security level is lower, the preset security level corresponding to communication of enterprise technicians is higher, the preset security level corresponding to communication used in the military field is higher, the preset security level has higher requirement on the quality of received signals, the damage to the required signals is minimized, and the preset security level of the first to-be-transmitted signal set is obtained based on the preset security level.
Step S500: analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether an anti-interference processing model is activated or not, and inputting the first signal set to be sent into the anti-interference processing model if the anti-interference processing model is activated;
specifically, the first anti-interference performance is analyzed based on the preset security level, whether the anti-interference processing model is activated or not is judged, that is, whether the first anti-interference performance is matched with the preset security level or not is judged, if the first anti-interference performance is matched with the preset security level, the anti-interference processing model does not need to be activated, for example, the anti-interference processing model is not needed to be activated, when ordinary people make a call, partial noise or discontinuous sound is generated, but the preset security level corresponding to the ordinary daily communication is lower, and at the moment, the anti-interference processing model does not need to be activated; if the preset security level corresponding to the communication of the enterprise technicians is high, if the signal is greatly damaged, an anti-interference processing model needs to be activated, the communication quality is guaranteed, the anti-interference cost is reduced, and the resource waste is avoided. And if the anti-interference processing model is activated, inputting the first signal set to be transmitted into the anti-interference processing model, and carrying out spread spectrum processing on the first signal set to be transmitted by the anti-interference processing model.
Step S600: performing template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model, and outputting a spread spectrum signal set;
as shown in fig. 2, step S600 in the embodiment of the present application further includes:
step S610: building the anti-interference processing model, wherein the anti-interference processing model comprises a signal spread spectrum template, and the signal spread spectrum template comprises a first spread spectrum sub-template and a second spread spectrum sub-template;
step S620: inputting the first signal set to be transmitted into the first spread spectrum sub-template for signal expansion, and outputting a primary spread spectrum signal set;
step S630: performing signal expansion on the primary spread spectrum signal set according to the second spread spectrum sub-template, and outputting a secondary spread spectrum signal set;
step S640: and taking the secondary spread spectrum signal set as the output of the anti-interference processing model.
Wherein, the first set of signals to be transmitted is input to the first spread spectrum sub-template for signal spreading, and a primary set of spread spectrum signals is output, step S620 in this embodiment further includes:
step S621: acquiring signal timing sequence information of the first signal set to be transmitted;
step S622: intercepting a time sequence signal according to the signal time sequence information to obtain a first time sequence signal section;
step S623: and processing the first time sequence signal segment according to the spread spectrum code of the first spread spectrum sub-template, and outputting the primary spread spectrum signal set.
Wherein, according to the second spread spectrum sub-template, signal spreading is performed on the primary spread spectrum signal set, and a secondary spread spectrum signal set is output, in this embodiment, step S630 further includes:
step S631: acquiring the frequency bandwidth of the primary spread spectrum signal set;
step S632: and inputting the frequency bandwidth of the primary spread spectrum signal set and the primary spread spectrum signal set into the second spread spectrum sub-template, performing spread spectrum code matching and signal processing according to the second spread spectrum sub-template, and outputting the secondary spread spectrum signal set.
Specifically, template spread spectrum processing is carried out on a first signal set to be transmitted according to an anti-interference processing model, and a spread spectrum signal set is output, wherein the spread spectrum is that the bandwidth used for transmitting signals is far larger than the bandwidth of the signals. The spread spectrum communication technology uses spread spectrum coding to carry out spread spectrum modulation at a sending end, uses related demodulation technology to receive information, and completes the spreading of a frequency band through an independent spread spectrum code sequence.
Specifically, an anti-interference processing model is firstly established, wherein the anti-interference processing model comprises a signal spreading template, the signal spreading template comprises a first spreading sub-template and a second spreading sub-template, the first spreading sub-template is a template for spreading a signal to be transmitted by a time hopping spreading technology, a pseudo code sequence is used for starting and stopping the transmission time and duration of the signal in time hopping, and the existence and non-existence of the transmitted signal are pseudo-random as the pseudo code sequence. In this mode, the transmission time is divided into frame time segments, each frame time segment is divided into time slots, in each frame, one time slot modulates one piece of information, all information bits of the frame are cumulatively transmitted, based on which a first set of signals to be transmitted is input to a first spread spectrum sub-template for signal spreading, a primary set of spread spectrum signals is output, and the primary set of spread spectrum signals is obtained after time hopping spread spectrum of the first set of signals to be transmitted.
The second spread spectrum sub-template is a template for performing secondary spread spectrum on a primary spread spectrum signal set by using a direct sequence spread spectrum technology, wherein the direct sequence spread spectrum is a process of directly spreading the spectrum of a signal by using a high-code-rate spread spectrum code sequence, specifically, modulo-2 addition or waveform multiplication, and based on the process, the primary spread spectrum signal set is subjected to signal spreading according to the second spread spectrum sub-template, so that a secondary spread spectrum signal set is obtained, and the secondary spread spectrum signal set is used as the output of an anti-interference processing model. That is to say, the input of the anti-interference processing model is a first signal set to be transmitted, the first spread spectrum sub-template and the second spread spectrum sub-template are two network layers embedded in the anti-interference processing model, the first signal set to be transmitted firstly carries out first spread spectrum processing through the first spread spectrum sub-template to output a primary spread spectrum signal set, and then the primary spread spectrum signal set carries out second spread spectrum processing through the second spread spectrum sub-template to output a secondary spread spectrum signal set, so that the technical effects of improving the anti-interference performance and improving the signal transmission quality are achieved.
Specifically, the signal timing information of the first signal set to be transmitted is obtained, where the signal timing information refers to a signal whose horizontal axis is used as time, and the signal timing is intercepted according to the signal timing information, that is, according to the time domain characteristics of the signal, the signal in any time domain is intercepted, so that the intercepted signal is used as a first timing signal segment, the first timing signal segment is further processed according to a spreading code of a first spreading sub-template, the first spreading sub-template performs spreading processing on the first timing signal segment based on a time hopping spreading technology, which is simply referred to as time hopping, the time hopping spreading is a time segment that divides transmission time into frames, the time segment of each frame is further divided into time slots, in each frame, one time slot modulates one piece of information, and which time slot in one frame transmits the signal is controlled by the spreading code sequence. Therefore, it can be understood that the selected multi-slot time shift keying is performed by using a pseudo-random code sequence, the pseudo-random code sequence is a spread spectrum code, and the first spreading is completed based on the spread spectrum code, so as to obtain a spread spectrum signal set, thereby achieving the effect of reducing the duty ratio of the working time.
Specifically, the frequency bandwidth of the primary spread spectrum signal set is obtained, the frequency bandwidth of the primary spread spectrum signal set and the primary spread spectrum signal set are input into a second spread spectrum sub-template, and the second spread spectrum sub-template performs spread spectrum code matching and signal processing on the primary spread spectrum signal set according to the frequency bandwidth of the primary spread spectrum signal set, so that a secondary spread spectrum signal set is output. A temporally finite signal, the frequency spectrum of which is infinite, such as a narrow pulse signal, the frequency spectrum of which is broad, has a frequency bandwidth that is approximately inversely proportional to its duration. The bandwidth of the 1 microsecond pulse is about 1MHz. Thus, if a primary set of spread spectrum signals is modulated with a narrowly defined pulse sequence, a very wide band of signals can be generated, this very narrow pulse code sequence being the spreading code. That is, the second spreading sub-template includes a plurality of spreading code sequences with different bandwidths, and performs direct sequence spreading processing according to the frequency bandwidth of the primary spreading signal set and matching proper spreading code sequences, it should be noted that the employed spreading code sequence is irrelevant to the transmitted signal, that is, it does not affect the transparency of information transmission at all, like a general sinusoidal carrier signal, and the spreading code only plays a role of spreading the signal spectrum.
Step S700: and sending the spread spectrum signal set to the signal receiving source, and carrying out signal restoration processing based on the signal receiving source.
As shown in fig. 3, step S700 in the embodiment of the present application further includes:
step S710: outputting a first demodulation code according to the spread spectrum code of the first spread spectrum sub-template;
step S720: outputting a second demodulation code according to the spread spectrum code of the second spread spectrum sub-template;
step S730: and sending the first demodulation code and the second demodulation code to the signal receiving source, and demodulating and restoring the spread spectrum signal set by the signal receiving source to obtain a restored signal set.
Specifically, a spread spectrum signal set is sent to a signal receiving source, the signal receiving source receives the spread spectrum signal set and then performs signal restoration processing, in brief, the spread spectrum signal set output after the spread spectrum processing is processed to obtain an original wireless signal, the spread spectrum signal set needs to be demodulated at the signal receiving source to restore the transmitted signal, in spread spectrum communication, the signal receiving source performs demodulation restoration with the received spread spectrum signal set by using the same spread spectrum code sequence as that used in the spread spectrum processing, and restores the transmitted signal, in other words, the signal after spreading is restored to the original transmitted signal.
Specifically, the signal receiving source demodulates the received spread spectrum signal set by using the same spread spectrum code sequence as that used for spread spectrum processing, recovers the transmitted signal, outputs a first demodulation code according to the spread spectrum code of the first spread spectrum sub-template based on the first demodulation code, and further sends the first demodulation code and the second demodulation code to the signal receiving source, demodulates the spread spectrum signal set by the signal receiving source according to the spread spectrum code of the second spread spectrum sub-template to obtain a recovered signal set, and specifically, the signal receiving source firstly performs first demodulation and recovery on the spread spectrum signal set according to the second demodulation code, the first demodulation and the second demodulation code are the same as that of the second spread spectrum sub-template, the demodulation is performed on the direct sequence spread spectrum signal set by using a demodulation correlation method, the correlation demodulation processing is that two signals are multiplied, namely, the demodulation code and the received signal are multiplied, then an expected mathematical (average value) is obtained, or an integral obtained by multiplying two signal instantaneous values, then the first demodulation code is used for demodulation, and the second demodulation is performed on the recovered signal, and the recovered signal is obtained by using a common demodulation mode that the demodulated signal is obtained by using a second coherent demodulation method.
Step S800 in the embodiment of the present application further includes:
step S810: acquiring a test signal set, and performing anti-interference test based on the test signal set to obtain an original sample signal and a test sample signal;
step S820: performing loss analysis on the original sample signal and the test sample signal to obtain a first loss coefficient;
step S830: and generating first early warning information according to the first loss coefficient.
Specifically, the method is adopted to complete the construction of the communication anti-interference system, the anti-interference performance of the communication anti-interference system needs to be tested, based on which, a test signal set is obtained, the test signal set contains wireless communication signals for performing anti-interference testing, the anti-interference testing is performed based on the test signal set, in brief, the test signal set is input into the communication anti-interference system to transmit the test signal set, the communication anti-interference system performs anti-interference processing on the test signal set by adopting the anti-interference method provided in the embodiment and then transmits the test signal set to obtain an original sample signal and a test sample signal, the original sample signal refers to the test signal set before signal transmission, the test sample signal refers to a restored signal obtained by demodulating and restoring the test signal set, and further performs comparison analysis on the original sample signal and the test sample signal to determine the loss degree of the original sample signal generated in the transmission process, the loss degree serves as a first loss coefficient, and generates first early warning information according to the first loss coefficient, for example, if the first loss coefficient is smaller, the first early warning information is generated to prompt the anti-interference optimization of the anti-interference performance, and the anti-interference optimization method is performed, for example, and the anti-interference optimization method is performed.
Based on the above analysis, in the embodiment, by performing interference immunity analysis on a signal to be transmitted, determining whether the signal needs to be subjected to interference immunity processing based on a preset security level, performing spread spectrum processing on the signal to be transmitted by adopting two spread spectrum technologies, namely frequency modulation spread spectrum and direct sequence spread spectrum, in the interference immunity processing, and performing demodulation and restoration on a signal receiving source, the technical effects of improving the interference immunity and improving the communication quality of wireless communication are achieved.
Example two
Based on the same inventive concept as the anti-interference method applied to wireless communication in the foregoing embodiment, as shown in fig. 4, the present application further provides an anti-interference system applied to wireless communication, where the system is communicatively connected to a signal transceiver, and the system includes:
a signal to be transmitted acquiring module 11, where the signal to be transmitted acquiring module 11 is configured to acquire a first signal set to be transmitted;
a signal transmission analysis module 12, where the signal transmission analysis module 12 is configured to determine, based on the signal transceiving apparatus, a signal transmission channel, a signal transmission source, and a signal reception source of the first set of signals to be transmitted;
the anti-interference obtaining module 13 is configured to analyze the signal transmission channel, the signal transmission source, and the signal receiving source to obtain a first anti-interference;
a security level obtaining module 14, where the security level obtaining module 14 is configured to obtain a preset security level of the first to-be-transmitted signal set;
an anti-interference processing model activation module 15, where the anti-interference processing model activation module 15 is configured to analyze the first anti-interference performance based on the preset security level, determine whether to activate the anti-interference processing model, and if the anti-interference processing model is activated, input the first signal set to be transmitted into the anti-interference processing model;
the spread spectrum processing module 16 is configured to perform template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model, and output a spread spectrum signal set;
and the signal restoration processing module 17 is configured to send the spread spectrum signal set to the signal receiving source, and perform signal restoration processing based on the signal receiving source.
Further, the system further comprises:
the anti-interference processing model building module is used for building the anti-interference processing model, wherein the anti-interference processing model comprises a signal spread spectrum template, and the signal spread spectrum template comprises a first spread spectrum sub-template and a second spread spectrum sub-template;
the first signal expansion module is used for inputting the first signal set to be transmitted into the first spread spectrum sub-template for signal expansion and outputting a primary spread spectrum signal set;
the second signal expansion module is used for performing signal expansion on the primary spread spectrum signal set according to the second spread spectrum sub-template and outputting a secondary spread spectrum signal set;
an output determination module, configured to use the set of secondary spread spectrum signals as an output of the anti-interference processing model.
Further, the system further comprises:
a signal timing information acquisition module, configured to acquire signal timing information of the first set of signals to be transmitted;
the time sequence signal intercepting module is used for intercepting a time sequence signal according to the signal time sequence information to obtain a first time sequence signal section;
and the primary spread spectrum signal set output module is used for processing the first time sequence signal section according to the spread spectrum code of the first spread spectrum sub-template and outputting the primary spread spectrum signal set.
Further, the system further comprises:
a frequency bandwidth obtaining module, configured to obtain a frequency bandwidth of the primary spread spectrum signal set;
and the secondary spread spectrum signal set output module is used for inputting the frequency bandwidth of the primary spread spectrum signal set and the primary spread spectrum signal set into the second spread spectrum sub-template, performing spread spectrum code matching and signal processing according to the second spread spectrum sub-template, and outputting the secondary spread spectrum signal set.
Further, the system further comprises:
a first demodulation code obtaining module, configured to output a first demodulation code according to the spreading code of the first spreading sub-template;
a second demodulation code obtaining module, configured to output a second demodulation code according to the spreading code of the second spreading sub-template;
and the demodulation and restoration module is used for sending the first demodulation code and the second demodulation code to the signal receiving source, and demodulating and restoring the spread spectrum signal set by the signal receiving source to obtain a restored signal set.
Further, the system further comprises:
the security analysis module is used for analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain transmission security, transmission security and receiving security;
a security evaluation module for evaluating the transmission security, and the reception security, and outputting a first security factor;
a first immunity generation module, configured to generate the first immunity with the first safety factor.
Further, the system further comprises:
the device comprises a sample signal acquisition module, a signal processing module and a signal processing module, wherein the sample signal acquisition module is used for acquiring a test signal set and carrying out anti-interference test based on the test signal set to obtain an original sample signal and a test sample signal;
the loss analysis module is used for carrying out loss analysis on the original sample signal and the test sample signal to obtain a first loss coefficient;
and the first early warning information generation module is used for generating first early warning information according to the first loss coefficient.
The specific example of the anti-interference method applied to wireless communication in the first embodiment is also applicable to the anti-interference system applied to wireless communication in the present embodiment, and through the foregoing detailed description of the anti-interference method applied to wireless communication, a person skilled in the art can clearly know that the anti-interference system applied to wireless communication in the present embodiment is not described in detail herein for the sake of brevity of the description. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel, sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (8)
1. An interference rejection method applied to wireless communication, wherein the method is applied to a communication interference rejection system, the system is in communication connection with a signal transceiver, and the method comprises:
acquiring a first signal set to be transmitted;
determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device;
analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain a first anti-interference performance;
acquiring a preset security level of the first signal set to be transmitted;
analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether an anti-interference processing model is activated or not, and inputting the first signal set to be transmitted into the anti-interference processing model if the anti-interference processing model is activated;
performing template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model, and outputting a spread spectrum signal set;
and sending the spread spectrum signal set to the signal receiving source, and performing signal restoration processing based on the signal receiving source.
2. The method of claim 1, wherein the method further comprises:
building the anti-interference processing model, wherein the anti-interference processing model comprises a signal spread spectrum template, and the signal spread spectrum template comprises a first spread spectrum sub-template and a second spread spectrum sub-template;
inputting the first signal set to be transmitted into the first spread spectrum sub-template for signal expansion, and outputting a primary spread spectrum signal set;
performing signal expansion on the primary spread spectrum signal set according to the second spread spectrum sub-template, and outputting a secondary spread spectrum signal set;
and taking the secondary spread spectrum signal set as the output of the anti-interference processing model.
3. The method of claim 2, wherein the first set of signals to be transmitted is input to the first spreading sub-template for signal spreading, and a primary set of spread signals is output, the method comprising:
acquiring signal timing sequence information of the first signal set to be transmitted;
intercepting a time sequence signal according to the signal time sequence information to obtain a first time sequence signal section;
and processing the first time sequence signal segment according to the spread spectrum code of the first spread spectrum sub-template, and outputting the primary spread spectrum signal set.
4. The method of claim 3, wherein the primary set of spread spectrum signals are signal spread according to the second spreading sub-template to output a secondary set of spread spectrum signals, the method comprising:
acquiring the frequency bandwidth of the primary spread spectrum signal set;
and inputting the frequency bandwidth of the primary spread spectrum signal set and the primary spread spectrum signal set into the second spread spectrum sub-template, performing spread spectrum code matching and signal processing according to the second spread spectrum sub-template, and outputting the secondary spread spectrum signal set.
5. The method of claim 4, wherein performing signal restoration processing based on the signal receiving source comprises:
outputting a first demodulation code according to the spread spectrum code of the first spread spectrum sub-template;
outputting a second demodulation code according to the spread spectrum code of the second spread spectrum sub-template;
and sending the first demodulation code and the second demodulation code to the signal receiving source, and demodulating and restoring the spread spectrum signal set by the signal receiving source to obtain a restored signal set.
6. The method of claim 1, wherein the signal transmission channel, the signal transmission source, and the signal reception source are analyzed for a first interference immunity, the method comprising:
analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain transmission safety, transmission safety and receiving safety;
evaluating the transmission safety, the sending safety and the receiving safety, and outputting a first safety factor;
generating the first immunity with the first safety factor.
7. The method of claim 5, wherein the method further comprises:
acquiring a test signal set, and performing anti-interference test based on the test signal set to obtain an original sample signal and a test sample signal;
performing loss analysis on the original sample signal and the test sample signal to obtain a first loss coefficient;
and generating first early warning information according to the first loss coefficient.
8. An interference rejection system for wireless communication, said system communicatively coupled to a signal transceiver, said system comprising:
the device comprises a signal to be transmitted acquisition module, a signal to be transmitted acquisition module and a signal to be transmitted acquisition module, wherein the signal to be transmitted acquisition module is used for acquiring a first signal set to be transmitted;
the signal transmission analysis module is used for determining a signal transmission channel, a signal transmitting source and a signal receiving source of the first signal set to be transmitted based on the signal transceiving device;
the anti-interference acquisition module is used for analyzing the signal transmission channel, the signal transmission source and the signal receiving source to obtain first anti-interference;
the security level acquisition module is used for acquiring a preset security level of the first signal set to be transmitted;
the anti-interference processing model activation module is used for analyzing the first anti-interference performance based on the preset confidentiality grade, judging whether the anti-interference processing model is activated or not, and inputting the first signal set to be transmitted into the anti-interference processing model if the anti-interference processing model is activated;
the spread spectrum processing module is used for carrying out template spread spectrum processing on the first signal set to be transmitted according to the anti-interference processing model and outputting a spread spectrum signal set;
and the signal restoration processing module is used for sending the spread spectrum signal set to the signal receiving source and carrying out signal restoration processing based on the signal receiving source.
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