CN117792422A - Parameter time-varying anti-interference wireless communication system and operation method thereof - Google Patents
Parameter time-varying anti-interference wireless communication system and operation method thereof Download PDFInfo
- Publication number
- CN117792422A CN117792422A CN202311682089.XA CN202311682089A CN117792422A CN 117792422 A CN117792422 A CN 117792422A CN 202311682089 A CN202311682089 A CN 202311682089A CN 117792422 A CN117792422 A CN 117792422A
- Authority
- CN
- China
- Prior art keywords
- time
- varying
- parameter
- information
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006854 communication Effects 0.000 title claims abstract description 63
- 238000004891 communication Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 37
- 238000001228 spectrum Methods 0.000 claims abstract description 33
- 230000008859 change Effects 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims description 41
- 230000007480 spreading Effects 0.000 claims description 33
- 238000005516 engineering process Methods 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 4
- 238000009432 framing Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000000547 structure data Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a parameter time-varying anti-interference wireless communication system and an operation method thereof, wherein the system comprises: the transmitting terminal comprises a time-varying parameter generator, a parameter selection controller and a processing module, wherein the time-varying parameter generator is used for generating each selection control parameter of a data frame which changes with time, the parameter selection controller is used for generating corresponding time-varying control parameters based on each selection control parameter, and the processing module is used for realizing time-frequency code multidimensional change of information source data with time based on the time-varying control parameters; and the receiving end is used for capturing the information sent by the transmitting end and carrying out time-varying parameter recovery on the received information so as to acquire the information source data. The advantages are that: the system realizes the time-frequency code multidimensional change of the wireless communication system along with time by introducing time-varying control parameters on the basis of the traditional frequency hopping spread spectrum signal construction, and improves the anti-interference and anti-interception capability of the wireless communication system.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an anti-interference wireless communication system with time-varying parameters and an operation method thereof, and especially relates to an anti-interference transmission method with time-varying multidimensional parameters in wireless communication.
Background
The anti-interference technology of communication is the key of reliable information transmission in a complex electromagnetic environment, and the requirements of people on the reliability transmission in the communication process and the safety of the signal transmission process are higher and higher, however, the traditional fixed parameter anti-interference signal has certain disadvantages in the anti-interception performance.
The traditional wireless communication anti-interference technology mainly improves the anti-interference capability of own signals, gradually develops frequency domain anti-interference and anti-interception technologies which are represented by direct sequence spread spectrum and frequency hopping, and airspace anti-interference and anti-interception technologies which are mainly self-adaptive zero-setting antennas, and develops towards the time, frequency and air multidimensional comprehensive anti-interference direction. At present, the anti-interference of a signal domain of a wireless communication system mainly adopts direct sequence spread spectrum and frequency hopping anti-interference measures, so that the anti-interference transmission of communication is realized, and meanwhile, the anti-interference transmission of the communication has the characteristics of spectrum hiding and spectrum avoidance, but the waveform of the communication signal and the design of the system almost adopt fixed parameters, and the time variability and the safety are poor. Accordingly, improvements to existing wireless communication systems are needed.
It is to be understood that the foregoing is merely illustrative of the background art to which the present invention pertains and is not necessarily a representation of the prior art.
Disclosure of Invention
Based on the technical problems, the invention aims to provide an anti-interference wireless communication system with time-varying parameters and an operation method thereof, wherein the system realizes the time-varying multi-dimension change of a time-frequency code of the wireless communication system by introducing time-varying control parameters on the basis of the traditional frequency hopping spread spectrum signal construction, and improves the anti-interference and anti-interception capability of the communication of the wireless communication system.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
a parametrically time-varying, interference-free wireless communication system, comprising:
the transmitting terminal comprises a time-varying parameter generator, a parameter selection controller and a processing module, wherein the time-varying parameter generator is used for generating each selection control parameter of a data frame which changes with time, the parameter selection controller is used for generating corresponding time-varying control parameters based on each selection control parameter, and the processing module is used for realizing time-frequency code multidimensional change of information source data with time based on the time-varying control parameters;
and the receiving end is used for capturing the information sent by the transmitting end and carrying out time-varying parameter recovery on the received information so as to acquire the information source data.
Optionally, each of the selection control parameters includes: symbol rate selection control parameters, chip rate selection control parameters, spread spectrum codeword selection control parameters, and hopping pattern selection control parameters;
each of the time-varying control parameters includes: a time-varying symbol parameter, a time-varying codeword parameter, and a time-varying frequency parameter.
Optionally, the transmitting end includes a symbol rate set, a chip rate set, a spreading sequence rate set and a frequency hopping frequency set, the time-varying parameter generator includes a random number generation controller and a plurality of random number generators that are independent of each other, each random number generator corresponds to each set, and the random number generation controller controls each random number generator to generate the selection control parameter corresponding to each set.
Optionally, the time-varying parameter generator includes a time-base technology device, and when the time-varying parameter generator stores random parameters in advance, the time-base technology device synchronously reads time, frequency and code parameters from the random parameters to generate corresponding selection control parameters.
Optionally, the transmitting end includes a symbol rate set, a chip rate set, a spreading sequence rate set, and a frequency hopping frequency set, and the parameter selection controller includes: the system comprises a symbol parameter selection controller, a code word parameter selection controller and a frequency hopping parameter selection controller, wherein the symbol parameter selection controller selects time-varying symbol parameters from a symbol rate set based on the symbol rate selection control parameters, the code word parameter selection controller selects time-varying code word parameters from a spreading sequence rate set and a code word rate set based on the code word rate selection control parameters and the spreading code word selection control parameters, and the frequency hopping parameter selection controller combines a frequency hopping controller to select time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters.
Optionally, the receiving end includes the same symbol rate set, chip rate set, spread spectrum sequence rate set and frequency hopping frequency set as the transmitting end, and the time-varying parameter generator sends communication parameters to the receiving end, where the communication parameters include various selection control parameters, so that the receiving end obtains time-varying processing information of the transmitting end.
Optionally, the receiving end includes a receiver, which is configured to receive and process the signal sent by the transmitting end.
Optionally, a method for operating the above-mentioned anti-interference wireless communication system with time-varying parameters, the method comprising:
s1, a transmitting end generates various selection control parameters through a time-varying parameter generator, a parameter selection controller generates corresponding time-varying control parameters based on the various selection control parameters, and a processing module realizes time-frequency code multidimensional change of information source data based on the time-varying control parameters;
s2, the receiving end captures the information sent by the transmitting end and recovers time-varying parameters of the received information to obtain information source data.
Optionally, in S1:
the processing module generates time information, wherein the time information comprises high-order time information and low-order time information;
the processing module generates a frame structure time base count based on the time information, and simultaneously, the time-varying parameter generator generates various selection control parameters;
the time-varying parameter generator constructs a symbol rate set, a chip rate set, a spreading sequence rate set and a frequency hopping frequency set, the parameter selection controller synchronously generates corresponding time-varying control parameters based on the selection control parameters, specifically, the symbol parameter selection controller selects time-varying symbol parameters from the symbol rate set based on the symbol rate selection control parameters, the codeword parameter selection controller selects time-varying codeword parameters from the spreading sequence rate set and the chip rate set based on the chip rate selection control parameters and the spreading codeword selection control parameters, and the frequency hopping parameter selection controller selects time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters;
the processing module carries out data framing, the data frame comprises a synchronous section and a data section, the synchronous section carries out parameter transformation by TODH high-order information in an initial stage in the construction, the synchronous section is repeated by adopting a plurality of frequencies and/or code words, TOD time information and synchronous acquisition auxiliary information are filled, and the frequencies and/or code words of the synchronous section of each frame are different; the data segment is the data of the source data after channel coding, and corresponding data filling is read from the data buffer area through the data segment reading address;
the processing module completes time-varying codeword spread spectrum of the synchronous header and the data segment sequence data symbol through time-varying codeword parameters, and specifically comprises determining the length of the spread spectrum codeword, the residence time length of the chip and the codeword;
the processing module completes the control of the residence time of the code word through the time-varying symbol parameters;
the processing module completes the time-varying configuration of the transmitting frequency and residence time of each symbol, selects the frequency hopping point and the time-varying speed of hopping along with the symbol rate through the time-varying frequency parameters.
Optionally, in the step S2, the receiving end captures the synchronization header through the high-order time information, and recovers the data frame information through resolving the TOD low-order time information, which specifically includes the following steps:
in the initial capturing stage, a receiving end acquires synchronous section parameters based on GPS, beidou navigation assistance or based on the chip time of a real-time clock of the receiving end;
the receiver state of the receiving end is adjusted to be a searching stage, a receiving frequency point and a spread spectrum code word are selected, the relevant peak of the synchronous section information is captured, and a multipath parallel capturing scheme is adopted according to the repetition condition of the frequency and the code word of the synchronous end;
the receiver captures a correlation peak and then enters a signal capturing stage to confirm synchronous information, and in the signal capturing stage, if synchronous segment information is reliably captured for a plurality of times within a T1 time interval, the receiver enters an information receiving stage to continuously receive the information; if the synchronous segment information is not captured continuously in the continuous T2 time interval, the searching stage is shifted again;
in the information receiving stage, according to the signal capturing information, the TODL low-order time information is resolved, a parameter controller is adjusted, a signal resolving parameter is generated, the received signal is transformed, and time-varying parameter recovery of the source data of the receiving end is completed, wherein in the information receiving stage, if the synchronous segment information is not captured at continuous T3 time intervals, the searching stage is shifted, and T3 is larger than T1 and T2.
Compared with the prior art, the invention has the following advantages:
compared with the prior art, the system introduces time-varying parameters, can realize variable symbol rate, variable code chip rate, variable code word, variable carrier wave and frequency hopping rate, can further improve the time variability and randomness of the communication anti-interference system such as frequency hopping and spread spectrum, and greatly increases the difficulty of capturing communication signals and acquiring communication parameters of non-cooperative receivers under the condition that the complexity of the receiver of the cooperative receivers is limited. The invention supports the dynamic adjustment of partial parameters, and the flexible parameter adjustment function can be rapidly applied to various countermeasure communication scenes.
Drawings
Fig. 1 is a schematic diagram of a working principle of a transmitting end in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a frame structure synchronization segment according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a frame structure data segment according to an embodiment of the present invention.
Detailed Description
The invention will be further described by the following detailed description of a preferred embodiment, taken in conjunction with the accompanying drawings.
Based on the above problems, the invention provides a parameter time-varying anti-interference wireless communication system, which can further improve the time variability and randomness of communication anti-interference systems such as frequency hopping spread spectrum and the like by constructing a wireless communication method with variable frequency set, spread spectrum code set, spread spectrum ratio, chip width and the like, and increase the difficulty of statistics capture of communication signals and communication parameters of non-cooperative receivers while providing convenience for cooperative communication parties to receive, thereby achieving the aim of improving the anti-interference and anti-interception capability of the system and being particularly suitable for the countermeasure communication scene with severe electromagnetic environment.
Specifically, the anti-interference wireless communication system with time-varying parameters comprises a transmitting end (refer to fig. 1) and a receiving end, wherein the transmitting end comprises a time-varying parameter generator, a parameter selection controller and a processing module, the time-varying parameter generator is used for generating each selection control parameter of a data frame (a synchronous section and a data section) which changes with time, the parameter selection controller generates corresponding time-varying control parameters based on each selection control parameter, and the processing module realizes time-frequency code multidimensional change of information source data based on the time-varying control parameters. The receiving end is used for capturing the information sent by the transmitting end and carrying out time-varying parameter recovery on the received information so as to obtain the information source data. Based on the traditional frequency hopping spread spectrum signal construction, the invention realizes the time-frequency code multidimensional change of the wireless communication system along with time by introducing the time-varying control parameter, and improves the anti-interference and anti-interception capability of the wireless communication system. It is to be understood that some modules in the wireless communication system of the present invention may be implemented by using existing devices, for example, a module that a transmitting end is responsible for receiving source data, etc., which are not described herein.
Each of the selection control parameters relates to a variable communication parameter such as a carrier frequency, a chip rate, a code sequence, etc., and in this embodiment, each of the selection control parameters includes: symbol rate selection control parameters, chip rate selection control parameters, spread spectrum codeword selection control parameters, and hopping pattern selection control parameters. Further, each of the time-varying control parameters includes: a time-varying symbol parameter, a time-varying codeword parameter, and a time-varying frequency parameter. Based on the respective time-varying control parameters, a construction of time-varying parameter signal data frames based on fig. 2 and 3 can be achieved.
As shown in fig. 1, in this embodiment, the transmitting end includes a symbol rate set, a chip rate set (random chip set), a spreading sequence rate set (spreading codeword set), and a frequency hopping frequency set (frequency hopping pattern set). The above-mentioned construction of each time-varying parameter set may be generated in real time or may be stored in advance. Illustratively, generating the set of time-varying parameters in real time includes: (1) Symbol rate sets { CR-1, CR-2, CR-3, CR-N }, representing the hold time of each symbol, and valued prime numbers consisting of 2, 3, 5, 7, 11, 13, 17, 19. (2) A set of spreading sequence rates { PN-1, PN-2, PN-3, & gt, PN-N }, wherein the spreading chips comprise a sequence length, orthogonal spreading code words. Wherein different spreading sequences can be realized with different spreading ratios, and the spreading codes with the same length have a plurality of selectable orthogonal spreading code words. The length of the spreading code words is preferably 16, 32, 128, 256, 1024, etc., and each length of the spreading code words has at least more than 2 orthogonal code word sets. (3) The carrier frequency set { CF-1, CF-2, CF-3, & gt, CF-L }, representing L frequency band control words, may generate a frequency hopping pattern based on a chaotic sequence or the like, and perform frequency word control.
The time-varying parameter generator comprises a random number generation controller and a plurality of random number generators with independence, wherein each random number generator corresponds to each set respectively, the random number generation controller performs parameter control based on time reference information, handshake information and the like, and each random number generator with independence generates selection control parameters corresponding to each set respectively, namely symbol rate selection control parameters, chip rate selection control parameters, spread spectrum code word selection control parameters and frequency hopping pattern selection control parameters. Optionally, the random number generator is a pseudo-random number generator, that is, although the parameters generated by the random number generator are random, in actual use, the parameter range in the set may be preset to obtain time-varying parameters within a certain range. It should be noted that, the generation manner of each of the selection control parameters is not limited to the above, and in other embodiments, other manners may be adopted, which is not limited by the present invention. Illustratively, in another embodiment, the time-varying parameter generator has a random parameter stored in advance, and includes a time-base technician that can synchronously read time, frequency and code parameters from the random parameter to generate corresponding selection control parameters.
Further, the parameter selection controller includes: the system comprises a symbol parameter selection controller, a code word parameter selection controller and a frequency hopping parameter selection controller, wherein the symbol parameter selection controller selects time-varying symbol parameters from a symbol rate set based on the symbol rate selection control parameters, the code word parameter selection controller selects time-varying code word parameters from a spreading sequence rate set and a code word rate set based on the code word rate selection control parameters and the spreading code word selection control parameters, and the frequency hopping parameter selection controller combines a frequency hopping controller to select time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters.
In this embodiment, the receiving end includes the same symbol rate set, chip rate set, spreading sequence rate set and frequency hopping frequency set as the transmitting end, and the time-varying parameter generator sends communication parameters to the receiving end, where the communication parameters include various selection control parameters, so that the receiving end obtains time-varying processing information of the transmitting end, and based on the time-varying processing information of the transmitting end, time-varying parameter recovery is performed by reverse engineering to obtain source data. Further, the receiving end comprises a receiver for receiving and processing the signal sent by the transmitting end.
Based on the same inventive concept, the invention also provides an operation method of the anti-interference wireless communication system with time-varying parameters, which comprises the following steps:
s1, a transmitting end generates various selection control parameters through a time-varying parameter generator, a parameter selection controller generates corresponding time-varying control parameters based on the various selection control parameters, and a processing module realizes time-frequency code multidimensional change of information source data based on the time-varying control parameters;
s2, the receiving end captures the information sent by the transmitting end and recovers time-varying parameters of the received information to obtain information source data.
In this embodiment, the transmitting end performs processing such as variable rate, variable spread spectrum, time-frequency hopping on the source data, and the operations in S1 include:
the processing module generates time information based on GPS, beidou navigation or an originating real-time clock chip and the like, wherein the time information comprises high-order time information and low-order time information;
the processing module generates frame structure time base count based on the time information, namely by taking an originating time base as a reference, and simultaneously the time-varying parameter generator generates each selection control parameter, namely an independent random number for generating time, frequency and code multidimensional parameter control signals; if the random parameters are stored in advance, the time-frequency code parameters are synchronously read through a time base technology device, and if the random parameters are generated in real time through each random number generator, the random number generator outputs the random number parameters as addresses, and parameter reading is carried out from each parameter set;
the time-varying parameter generator constructs a symbol rate set, a chip rate set, a spreading sequence rate set, and a frequency hopping frequency set. The parameter selection controller synchronously generates corresponding time-varying control parameters based on the selection control parameters, specifically, the symbol parameter selection controller selects time-varying symbol parameters, namely current symbol rate values, from a symbol rate set based on the symbol rate selection control parameters so as to determine the residence time length of the current symbol and realize time variation of the symbol rate; selecting, by a codeword parameter selection controller, a time-varying codeword parameter from a spreading sequence rate set and a chip rate set based on the chip rate selection control parameter and the spreading codeword selection control parameter, the time-varying codeword parameter comprising spreading codeword parameters to determine a spreading codeword length, a chip residence time length, a codeword, to achieve time-varying spreading codes and code rates; selecting time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters by a frequency hopping parameter selection controller, namely selecting frequency hopping patterns and frequency point residence time so as to realize time variation of frequency points and frequency hopping;
and counting the time frame structure by taking the originating time base as a reference, and counting the time base according to the variable symbol rate to generate a data reading address of the data segment. The processing module performs data framing, the data frame comprises a synchronous section and a data section (please see fig. 2 and 3), in order to facilitate the recovery of information of a receiving end, in the construction, the synchronous section performs parameter transformation by TODH high-order information in an initial stage, a plurality of frequencies and/or code words are adopted in the synchronous section to repeat, TOD time information, synchronous capturing auxiliary information and the like are filled, and the frequencies and/or code words of the synchronous sections of each frame are different, so that the capturing difficulty of the receiving end is reduced while the parameter time variation of the synchronous section is realized; the data segment is the data of the source data after channel coding, and corresponding data filling is read from the data buffer area through the data segment reading address; the time-varying parameters of the data segment are selected from the parameter sets by a parameter selection controller, taking time t as an example, the symbol parameter selection controller selects a symbol rate value CR-nt from the symbol rate set, the code word parameter selection controller selects a spread spectrum code word parameter PN-mt from the spread spectrum sequence rate set and the code chip rate set, the spread spectrum code word length, the code chip residence time length and the code word are determined, the frequency hopping parameter selection controller selects a frequency hopping point CF-lt from the frequency hopping frequency set, and the frequency hopping is time-varying with the symbol rate.
The processing module completes time-varying codeword spread spectrum of the synchronous header and the data segment sequence data symbol through time-varying codeword parameters, and specifically comprises determining the length of the spread spectrum codeword, the residence time length of the chip and the codeword;
the processing module completes the control of the residence time of the code word through the time-varying symbol parameters;
the processing module completes the time-varying configuration of the transmitting frequency and residence time of each symbol, selects the frequency hopping point and the time-varying speed of hopping along with the symbol rate through the time-varying frequency parameters.
Furthermore, in the step S2, the receiving end captures the synchronization header through prior information, namely high-order time information, and recovers the time-varying parameters of the data frame by resolving the TOD low-order time information, so that the receiving and transmitting end synchronizes the time-varying parameters, thereby facilitating information recovery, and the specific steps are as follows:
in the initial capturing stage, the receiving end generates a communication parameter delayed by T0 relative to the transmitting end and sends the communication parameter to the receiving end based on GPS, beidou navigation assistance or based on the chip time of a real-time clock of the receiving end, so that the receiving end acquires and recovers the synchronization section parameter;
the receiver state of the receiving end is adjusted to be a searching stage, a receiving frequency point and a spread spectrum code word are selected, the relevant peak of the synchronous section information is captured, and a multipath parallel capturing scheme is adopted according to the repetition condition of the frequency and the code word of the synchronous end;
the receiver captures a correlation peak and then enters a signal capturing stage to confirm synchronous information, and in the signal capturing stage, if synchronous segment information is reliably captured for a plurality of times within a T1 time interval, the receiver enters an information receiving stage to continuously receive the information; if the synchronous segment information is not captured continuously in the continuous T2 time interval, the searching stage is shifted again;
in the information receiving stage, according to the signal capturing information, the TODL low-order time information is resolved, a parameter controller is adjusted, a signal resolving parameter is generated, a receiving end time base counter is recovered, the received signal is subjected to frequency tracking, despreading, rate resolving and other transformation processing, residual frequency offset, time synchronization and the like are eliminated, and time-varying parameter recovery of the receiving end information source data is completed. In the information receiving stage, if no synchronization segment information is captured at consecutive time intervals of T3, the searching stage is shifted to, wherein the setting of T3 should be greater than T1 and T2.
In summary, according to the anti-interference wireless communication system with time-varying parameters and the operation method thereof, the system generates the time-varying sequence of the communication parameters at the transmitting end, and realizes the time-frequency code multi-dimension change of the information source data along with time based on the time-varying parameters, and the system recovers the time-varying parameters to acquire the information source data at the receiving end based on the time-varying data of the transmitting end.
Further, the system generates control parameters of data frames (synchronous segments and data segments) which change along with time through a time-varying parameter generator and a parameter selection controller, wherein the control parameters comprise variable communication parameters such as carrier frequency, chip rate, code sequence and the like, the parameters change along with time, a transmitting end controls multidimensional parameters such as working frequency, chip rate, spread spectrum sequence and the like of the communication system on the basis of the time-varying parameters, and a receiving end recovers received data on the basis of a synchronized parameter set. The invention can further improve the timeliness and randomness of communication anti-interference systems such as frequency hopping spread spectrum and the like, achieves the aim of improving the anti-interference and anti-interception capability of the system, and is particularly suitable for the countermeasure communication scene with severe electromagnetic environment.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A parametrically time-varying, interference-free wireless communication system, comprising:
the transmitting terminal comprises a time-varying parameter generator, a parameter selection controller and a processing module, wherein the time-varying parameter generator is used for generating each selection control parameter of a data frame which changes with time, the parameter selection controller is used for generating corresponding time-varying control parameters based on each selection control parameter, and the processing module is used for realizing time-frequency code multidimensional change of information source data with time based on the time-varying control parameters;
and the receiving end is used for capturing the information sent by the transmitting end and carrying out time-varying parameter recovery on the received information so as to acquire the information source data.
2. The parametric time-varying, interference-free wireless communication system of claim 1,
each of the selection control parameters includes: symbol rate selection control parameters, chip rate selection control parameters, spread spectrum codeword selection control parameters, and hopping pattern selection control parameters;
each of the time-varying control parameters includes: a time-varying symbol parameter, a time-varying codeword parameter, and a time-varying frequency parameter.
3. The parametric time-varying, interference-free wireless communication system of claim 1,
the transmitting terminal comprises a symbol rate set, a chip rate set, a spread spectrum sequence rate set and a frequency hopping frequency set, the time-varying parameter generator comprises a random number generation controller and a plurality of random number generators which are mutually independent, each random number generator corresponds to each set respectively, and the random number generation controller controls each random number generator to generate selection control parameters corresponding to each set respectively.
4. The parametric time-varying, interference-free wireless communication system of claim 1,
the time-varying parameter generator comprises a time-base technology device, and when random parameters are prestored in the time-varying parameter generator, the time-base technology device synchronously reads time, frequency and code parameters from the random parameters to generate corresponding selection control parameters.
5. The parametric time-varying, interference-free wireless communication system of claim 1,
the transmitting end comprises a symbol rate set, a chip rate set, a spread spectrum sequence rate set and a frequency hopping frequency set, and the parameter selection controller comprises: the system comprises a symbol parameter selection controller, a code word parameter selection controller and a frequency hopping parameter selection controller, wherein the symbol parameter selection controller selects time-varying symbol parameters from a symbol rate set based on the symbol rate selection control parameters, the code word parameter selection controller selects time-varying code word parameters from a spreading sequence rate set and a code word rate set based on the code word rate selection control parameters and the spreading code word selection control parameters, and the frequency hopping parameter selection controller combines a frequency hopping controller to select time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters.
6. The parametric time-varying, interference-free wireless communication system of claim 5, wherein the receiving end comprises the same set of symbol rates, set of chip rates, set of spreading sequence rates, and set of frequency hopping frequencies as the transmitting end, and the time-varying parameter generator sends communication parameters to the receiving end, the communication parameters comprising respective selection control parameters to cause the receiving end to obtain time-varying processing information of the transmitting end.
7. The parametric time-varying, interference-free wireless communication system of claim 1, wherein the receiving end comprises a receiver for receiving and processing signals transmitted by the transmitting end.
8. A method of operating a parametric time-varying, interference-free wireless communication system as claimed in any one of claims 1 to 7, comprising:
s1, a transmitting end generates various selection control parameters through a time-varying parameter generator, a parameter selection controller generates corresponding time-varying control parameters based on the various selection control parameters, and a processing module realizes time-frequency code multidimensional change of information source data based on the time-varying control parameters;
s2, the receiving end captures the information sent by the transmitting end and recovers time-varying parameters of the received information to obtain information source data.
9. The method of operating a parametric time-varying, interference-free wireless communication system of claim 8, wherein in S1:
the processing module generates time information, wherein the time information comprises high-order time information and low-order time information;
the processing module generates a frame structure time base count based on the time information, and simultaneously, the time-varying parameter generator generates various selection control parameters;
the time-varying parameter generator constructs a symbol rate set, a chip rate set, a spreading sequence rate set and a frequency hopping frequency set, the parameter selection controller synchronously generates corresponding time-varying control parameters based on the selection control parameters, specifically, the symbol parameter selection controller selects time-varying symbol parameters from the symbol rate set based on the symbol rate selection control parameters, the codeword parameter selection controller selects time-varying codeword parameters from the spreading sequence rate set and the chip rate set based on the chip rate selection control parameters and the spreading codeword selection control parameters, and the frequency hopping parameter selection controller selects time-varying frequency parameters from the frequency hopping frequency set based on the frequency hopping pattern selection control parameters;
the processing module carries out data framing, the data frame comprises a synchronous section and a data section, the synchronous section carries out parameter transformation by TODH high-order information in an initial stage in the construction, the synchronous section is repeated by adopting a plurality of frequencies and/or code words, TOD time information and synchronous acquisition auxiliary information are filled, and the frequencies and/or code words of the synchronous section of each frame are different; the data segment is the data of the source data after channel coding, and corresponding data filling is read from the data buffer area through the data segment reading address;
the processing module completes time-varying codeword spread spectrum of the synchronous header and the data segment sequence data symbol through time-varying codeword parameters, and specifically comprises determining the length of the spread spectrum codeword, the residence time length of the chip and the codeword;
the processing module completes the control of the residence time of the code word through the time-varying symbol parameters;
the processing module completes the time-varying configuration of the transmitting frequency and residence time of each symbol, selects the frequency hopping point and the time-varying speed of hopping along with the symbol rate through the time-varying frequency parameters.
10. The operation method of the anti-interference wireless communication system with time-varying parameters according to claim 9, wherein in S2, the receiving end captures the synchronization header through the high-order time information and recovers the data frame information through resolving the TOD low-order time information, which comprises the following specific steps:
in the initial capturing stage, a receiving end acquires synchronous section parameters based on GPS, beidou navigation assistance or based on the chip time of a real-time clock of the receiving end;
the receiver state of the receiving end is adjusted to be a searching stage, a receiving frequency point and a spread spectrum code word are selected, the relevant peak of the synchronous section information is captured, and a multipath parallel capturing scheme is adopted according to the repetition condition of the frequency and the code word of the synchronous end;
the receiver captures a correlation peak and then enters a signal capturing stage to confirm synchronous information, and in the signal capturing stage, if synchronous segment information is reliably captured for a plurality of times within a T1 time interval, the receiver enters an information receiving stage to continuously receive the information; if the synchronous segment information is not captured continuously in the continuous T2 time interval, the searching stage is shifted again;
in the information receiving stage, according to the signal capturing information, the TODL low-order time information is resolved, a signal resolving parameter is generated, the received signal is transformed, and the time-varying parameter recovery of the source data of the receiving end is completed, wherein in the information receiving stage, if the synchronous segment information is not captured at a continuous T3 time interval, the searching stage is carried out, and T3 is larger than T1 and T2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311682089.XA CN117792422A (en) | 2023-12-08 | 2023-12-08 | Parameter time-varying anti-interference wireless communication system and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311682089.XA CN117792422A (en) | 2023-12-08 | 2023-12-08 | Parameter time-varying anti-interference wireless communication system and operation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117792422A true CN117792422A (en) | 2024-03-29 |
Family
ID=90378988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311682089.XA Pending CN117792422A (en) | 2023-12-08 | 2023-12-08 | Parameter time-varying anti-interference wireless communication system and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117792422A (en) |
-
2023
- 2023-12-08 CN CN202311682089.XA patent/CN117792422A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5048052A (en) | Spread spectrum communication device | |
| Rulkov et al. | Digital communication using chaotic-pulse-position modulation | |
| US4280222A (en) | Receiver and correlator switching method | |
| WO2009049468A1 (en) | A transmitting and receiving system and method of ultra-wideband pulse or pulse sequence | |
| RU2002123370A (en) | PSEUDO-RANDOM NOISE GENERATORS FOR COMMUNICATION SYSTEMS WITH AN EXTENDED SPECTRUM | |
| JPH04256238A (en) | Spectrum diffusion modulation device | |
| JP2003124844A (en) | Method for decoding incident pulse signal of ultra wideband type | |
| US8014483B2 (en) | Method of acquiring initial synchronization in impulse wireless communication and receiver | |
| US5157688A (en) | Spread spectrum transmitter for degrading spread spectrum feature detectors | |
| CN117792422A (en) | Parameter time-varying anti-interference wireless communication system and operation method thereof | |
| US6430211B1 (en) | Frequency hopping for baseband transmitters | |
| WO1992017947A1 (en) | Identification apparatus and method | |
| JP2003152594A (en) | Apparatus and method for transmitting, apparatus and method for receiving, system and method for communicating, and program | |
| CN112994742B (en) | Method for realizing frequency hopping synchronization, receiver and communication equipment | |
| KR100320828B1 (en) | Matched filter and timing detection method | |
| JP2823341B2 (en) | Spread spectrum communication system and apparatus | |
| RU2713384C1 (en) | Method of transmitting information using broadband signals | |
| CN114779167B (en) | Spectrum multiplexing multi-source code division system space target perception method | |
| JPS62190940A (en) | Spread spectrum communication system and its receiver | |
| Dilmaghani et al. | UWB multiple-pulse generator and transmitter | |
| KR100194758B1 (en) | Receiver of multipath delay spread measurement system | |
| JPH09162846A (en) | Transmitting system by spread spectrum system | |
| SU1092744A1 (en) | Device for time synchronization of pseudorandom sequences | |
| SU683029A1 (en) | Communication system with time-compression of noise -like signals | |
| CN117856820A (en) | Frequency hopping difference phase-dry demodulation method based on TOD time word |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |