CN116683983B - Method, device and equipment for capturing and tracking TDMA burst communication - Google Patents
Method, device and equipment for capturing and tracking TDMA burst communication Download PDFInfo
- Publication number
- CN116683983B CN116683983B CN202310961097.1A CN202310961097A CN116683983B CN 116683983 B CN116683983 B CN 116683983B CN 202310961097 A CN202310961097 A CN 202310961097A CN 116683983 B CN116683983 B CN 116683983B
- Authority
- CN
- China
- Prior art keywords
- data
- section
- segment
- synchronous
- correlation peak
- 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.)
- Active
Links
- 230000006854 communication Effects 0.000 title claims abstract description 130
- 238000004891 communication Methods 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000001360 synchronised effect Effects 0.000 claims abstract description 87
- 238000012937 correction Methods 0.000 claims abstract description 70
- 238000005562 fading Methods 0.000 claims abstract description 30
- 238000004590 computer program Methods 0.000 claims description 11
- 238000001228 spectrum Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention provides a capture tracking method, a device and equipment for TDMA burst communication, which belong to the technical field of wireless communication, wherein the method comprises the steps of dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining the demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; according to the technical scheme, the synchronous correction frequency difference is determined through the synchronous section, the demarcation point is determined through the judging section, then the data section starts to be subjected to data interpretation by the demarcation point according to the synchronous correction frequency difference, and the data of the finally received data section can be ensured to be more stable and reliable.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, and a device for capturing and tracking TDMA burst communications.
Background
Along with the rapid development of the aerospace communication technology, the development direction of the communication field is gradually divided into two directions: the first is the development direction of high-rate data transmission which is pursued by higher transmission rate and spends resources, and the second is the research direction of communication modes which saves resources as much as possible and meets the requirements of practical application. The time division multiple address (Time division multiple access, TDMA) technology is applied in the second direction, and the occupied time of a communication channel is divided into time slots with equal or unequal sizes, so that the contents of a data format, a transmission direction and the like transmitted in each time slot are defined, and a communication protocol is formed, thereby realizing multi-address multiple device and multi-direction data communication in a certain bandwidth channel.
The communication mode of dividing time slots by TDMA is actually a burst type communication for devices participating in the communication. The key to determining whether TDMA communication is successful is therefore two: the first point is alignment of time slot divisions between devices engaged in communications; the second point is the capture tracking of the data transmitted during the time slot. If the slots of the devices involved in the communication are not synchronously aligned, the TDMA data may be severely disturbed, and the communication system may fail. If the device receiving the transmission data in the time slot cannot complete the capture tracking of the data in the specified time slot, the device will have frequency difference due to the difference between the work and other hardware, and the transmission data in the time slot will be in error and the interpretation will fail.
For the first point, most of the prior art uses homologous reference equipment or continuously calibrates deviation in the communication process to ensure accurate synchronization of time slots, and the scheme is mature. Therefore, how to implement the acquisition tracking of TDMA burst communication is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a method, a device and equipment for capturing and tracking TDMA burst communication, which are used for solving the problem of poor capturing and tracking stability of the TDMA burst communication in the prior art.
The invention provides a capture tracking method of TDMA burst communication, comprising the following steps:
dividing communication data in a communication time slot into a synchronous section, a judging section and a data section;
performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference;
determining a demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment;
and based on the synchronous segment correction frequency difference and the demarcation point, interpreting the data of the data segment to finish the receiving of the communication data.
According to the capturing and tracking method for TDMA burst communication provided by the invention, the two-dimensional capturing and primary frequency offset correction are carried out on the data of the synchronous section to obtain synchronous section correction frequency offset, and the method comprises the following steps:
two-dimensional capturing is carried out on the data of the synchronous section;
performing sliding exclusive OR operation on the code element data with the first preset bit length and the data of the synchronization section after the two-dimensional capturing to determine a first correlation peak value;
performing exclusive OR operation on the correlation sequences of the preset groups of band frequency differences and the two-dimensional captured data of the synchronous section respectively to obtain a correlation peak value set corresponding to each group;
and determining a synchronous segment correction frequency difference based on the first correlation peak value and the correlation peak value set.
According to the capturing and tracking method for TDMA burst communication provided by the present invention, the determining the synchronization segment correction frequency difference based on the first correlation peak value and the correlation peak value set includes:
determining the highest correlation peak value in the correlation peak value set;
and comparing the highest correlation peak value with the first correlation peak value to determine a synchronous segment correction frequency difference.
According to the capture tracking method for TDMA burst communication provided by the invention, the first preset bit length is 3840;
the correlation sequence of the preset group of band frequency differences is 33 groups of correlation sequences of band frequency differences, wherein the correlation sequences are in a range of +/-80 kHz and in a stepping 5 kHz.
According to the capturing and tracking method for TDMA burst communication provided by the present invention, the determining the boundary point between the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment includes:
performing exclusive OR operation on the correlation sequence with the second preset bit length and the data of the judging section to determine a correlation peak value in the data of the judging section;
and when the fading amplitude of the correlation peak value in the judging section data is larger than a preset threshold value, determining the position corresponding to the fading amplitude as a demarcation point of the judging section and the data section.
According to the capturing and tracking method for TDMA burst communication provided by the present invention, the correlation sequence of the second preset bit length is a correlation sequence of 3840×4 length.
According to the capturing and tracking method for TDMA burst communication provided by the present invention, the method for dividing communication data in a communication time slot into a synchronization section, a arbitration section and a data section comprises:
repeating the synchronization sequence with the first preset length for preset times to obtain a synchronization section;
spreading the second preset length sequence by two times of different multiples to obtain a judging section;
obtaining a preset number of data code elements through preset multiple spread spectrum to obtain a data segment;
the duration of the synchronization section, the duration of the arbitration section, the duration of the data section and the duration of the guard interval in the communication time slot form the duration of the communication time slot.
According to the capture tracking method of TDMA burst communication provided by the present invention, said synchronization segment comprises 115200 data symbols, said arbitration segment comprises 115200 data symbols, and said data segment comprises 1597440 data symbols;
the duration of the synchronization section is 30ms, the duration of the arbitration section is 30ms, the duration of the data section is 416ms, and the duration of the guard interval in the communication time slot is 24ms.
The invention also provides a device for capturing and tracking the TDMA burst communication, which comprises:
the division module is used for dividing communication data in the communication time slot into a synchronous section, a judging section and a data section;
the correction module is used for carrying out two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain a synchronous section correction frequency difference;
the judging module is used for determining the demarcation point of the judging section and the data section based on the fading amplitude of the correlation peak value in the data of the judging section;
and the interpretation module is used for interpreting the data of the data segment based on the synchronous segment correction frequency difference and the demarcation point to finish the receiving of the communication data.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a method of acquisition tracking of TDMA burst communications as described in any of the above when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of acquisition tracking of TDMA burst communications as described in any of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor implements a method of acquisition tracking of TDMA burst communications as described in any of the preceding.
The invention provides a method, a device and equipment for capturing and tracking TDMA burst communication, wherein the method comprises the steps of dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining the demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; according to the technical scheme, the synchronous correction frequency difference is determined through the synchronous section, the demarcation point is determined through the judging section, then the data section starts to be subjected to data interpretation by the demarcation point according to the synchronous correction frequency difference, and the data of the finally received data section can be ensured to be more stable and reliable.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for tracking acquisition of TDMA burst communications according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an acquisition tracking apparatus for TDMA burst communication according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a method, apparatus and device for capturing and tracking TDMA burst communications according to the present invention with reference to fig. 1-3.
Fig. 1 is a flowchart of a method for tracking acquisition of TDMA burst communications according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a capturing and tracking method for TDMA burst communication, where an execution subject may be a data receiving device, and the method mainly includes the following steps:
101. the communication data in the communication time slot is divided into a synchronization section, a arbitration section and a data section.
In a specific implementation process, first, communication data in a communication time slot is divided to obtain a synchronization segment, an arbitration segment and a data segment. For example, the communication rate is 3.84Mbps, the sampling rate of the receiving device is 4 times of the sampling rate, and one communication time slot is 500ms long, so that the synchronization section, the arbitration section, the data section and the guard interval in the time slot together form a 500ms communication time slot. Based on the partitioning rules, the sync segment, the arbitration segment, and the data segment are different. The synchronous section is used for capturing and carrying out self rough frequency offset estimation and elimination. The judging section is used for carrying out fine frequency deviation estimation and elimination, and accurately grabbing the initial position of the data section for data interpretation. The data segment is subjected to data interpretation according to the frequency difference eliminated by tracking capture of the synchronous segment and the judging segment.
102. And carrying out two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain the synchronous section correction frequency difference.
The data of the synchronous section are used for carrying out rough frequency offset estimation, two-dimensional capturing is carried out on the data of the synchronous section, then primary frequency offset correction is carried out on the data after two-dimensional capturing, and the frequency offset is eliminated to be within 2.5kHz through the process.
103. The demarcation point of the arbitrated segment and the data segment is determined based on the fading amplitude of the correlation peak in the data of the arbitrated segment.
After the data of the synchronous section are processed, the demarcation point of the judging section and the data section is determined through the judging section, and the demarcation point is clearly and accurately determined so that the data of the data section can be better interpreted.
Because the data of the data section is different from the data of the judging section, when the judging section transits to the data section, the correlation peak obtained by exclusive or operation has fading, whether the data section enters or not can be judged according to the amplitude of the fading, and the demarcation point of the data section and the judging section can be accurately determined according to the mutation position of the fading amplitude.
104. And based on the synchronous segment correction frequency difference and the demarcation point, interpreting the data of the data segment to finish the receiving of the communication data.
And then, according to the synchronous section correction frequency difference, the data of the data section is interpreted from the demarcation point, so that the elimination frequency difference can be ensured, and the integrity of the interpreted data of the data section can be ensured. Thus, for TDMA burst communications, the problem of data reception instability caused by the frequency difference of the receiving device and the transmitting device caused by the channel is effectively countered.
Since the frequency difference between the receiving device and the transmission data is controlled within 2.5kHz in the acquisition process of the synchronization segment, the frequency difference is converted into the data symbol time, the time difference of 1 data symbol is within 0.1ns, the maximum time difference of the data segment is about 0.16ms, and the information symbol time is 1ms, so that the data segment data can be received more reliably by using the method of the embodiment. The method of the embodiment can effectively realize TDMA data communication under the code rate of 3.84Mbps, can complete rapid and effective capturing and tracking of signals in the TDMA communication, eliminates the receiving and transmitting frequency difference caused by the difference between communication devices, and realizes data reception stably and reliably.
The capturing and tracking method for TDMA burst communication provided by the embodiment comprises the steps of dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining the demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; according to the technical scheme, the synchronous correction frequency difference is determined through the synchronous section, the demarcation point is determined through the judging section, then the data section starts to be subjected to data interpretation by the demarcation point according to the synchronous correction frequency difference, and the data of the finally received data section can be ensured to be more stable and reliable.
Further, in this embodiment, two-dimensional capturing and primary frequency offset correction are performed on data of a synchronization segment to obtain a synchronization segment correction frequency offset, including: two-dimensional capturing is carried out on the data of the synchronous section; performing sliding exclusive OR operation on code element data with a first preset bit length and data of a synchronization section after two-dimensional capturing to determine a first correlation peak value; performing exclusive OR operation on the correlation sequences of the preset groups of band frequency differences and the two-dimensional captured data of the synchronous section respectively to obtain a correlation peak value set corresponding to each group; based on the first correlation peak and the set of correlation peaks, a synchronization segment correction frequency difference is determined.
Wherein determining the synchronization segment correction frequency difference based on the first correlation peak and the set of correlation peaks comprises: determining the highest correlation peak value in the correlation peak value set; and comparing the highest correlation peak value with the first correlation peak value to determine the correction frequency difference of the synchronous section.
Specifically, after two-dimensional capturing is performed on the data of the synchronization section, sliding correlation operation (exclusive or operation) is performed on symbol data with a 3840 bit length and the data of the synchronization section after two-dimensional capturing, so that a first correlation peak value is obtained through calculation, and meanwhile, information symbols can be synchronized according to the first correlation peak value. Meanwhile, setting a correlation sequence with 33 groups of band frequency differences within a +/-80 kHz range and 5kHz stepping to carry out exclusive OR operation to obtain a correlation peak value set containing 33 groups of correlation peak values, comparing the correlation peak values of each group, taking a group with the highest peak value to identify successful capture, comparing the highest correlation peak value with the first correlation peak value according to the difference value, determining a correction frequency difference of a synchronous section, and eliminating the frequency difference to be within 2.5kHz after the process, thereby completing rough frequency difference estimation and elimination.
Further, on the basis of the foregoing embodiment, determining the boundary point between the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the arbitrated segment data in this embodiment includes: performing exclusive OR operation on the correlation sequence with the second preset bit length and the data of the judging section to determine a correlation peak value in the data of the judging section; and when the fading amplitude of the correlation peak value in the data of the arbitrated section is larger than a preset threshold value, determining the position corresponding to the fading amplitude as the demarcation point of the arbitrated section and the data section.
Specifically, the correlation sequence with the length of 3840×4 is used for carrying out exclusive or operation with the data of the arbitrated segment, the correlation peak value in the data of the arbitrated segment is determined, the same strategy as that of the synchronous segment is executed, further fine correction of frequency difference is carried out, and further estimation of deviation is carried out. The correlation sequence length of the arbitrated segment is longer than the correlation sequence length of the synchronized segment, and therefore the frequency offset estimation by the arbitrated segment is finer.
Meanwhile, based on characteristic differences of the data of the judging section and the data of the data section, determining a correlation peak value in the data of the judging section, judging amplitude variation among different peak values, when the amplitude variation is larger than a preset threshold value, indicating that the position corresponding to the fading amplitude at the moment is a starting point of the data section, and if the fading amplitude is smaller than or equal to the preset threshold value, indicating that the position corresponding to the fading amplitude at the moment is the data of the judging section. Therefore, by accurately judging the demarcation point of the judging section and the data section, the starting position of the data section is better identified, the interpretation of the data section is better completed, and the stability, the integrity and the accuracy of data transmission are ensured.
Further, on the basis of the above embodiment, in this embodiment, the division of the communication data in the communication slot into the synchronization segment, the arbitration segment, and the data segment includes: repeating the synchronization sequence with the first preset length for preset times to obtain a synchronization section; spreading the second preset length sequence by two times of different multiples to obtain a judging section; obtaining a preset number of data code elements through preset multiple spread spectrum to obtain a data segment; the duration of the synchronization segment, the duration of the arbitration segment, the duration of the data segment and the duration of the guard interval in the communication time slot form the duration of the communication time slot.
TABLE 1
Specifically, as shown in table 1, a communication slot lasts for a total of 500ms, which is a division principle of one communication slot. After the communication time slot starts, the synchronization section is firstly a synchronization section, 115200 code elements are obtained by repeating a synchronization sequence M0 with 64-bit length (first preset length) 1800 times (preset times) for 30ms in total; secondly, an arbitrating section is obtained by 8 times of spread spectrum and 64 times of spread spectrum of a sequence with 225 bit length (second preset length), wherein the total is 115200 code elements for 30ms; next is a data segment, which has 416 bits of data length, and directly spreads by 3840 times (preset multiple) to obtain 1597440 data symbols, which lasts for 416ms; finally, the guard interval within the slot is 24ms.
Based on the same general inventive concept, the present invention also protects a capturing and tracking device for TDMA burst communication, and the capturing and tracking device for TDMA burst communication provided by the present invention is described below, and the capturing and tracking device for TDMA burst communication described below and the capturing and tracking method for TDMA burst communication described above can be referred to correspondingly.
Fig. 2 is a schematic structural diagram of an acquisition tracking apparatus for TDMA burst communication according to an embodiment of the present invention.
As shown in fig. 2, an apparatus for capturing and tracking TDMA burst communication according to an embodiment of the present invention includes:
a dividing module 201, configured to divide communication data in a communication time slot into a synchronization section, a arbitration section, and a data section;
the correction module 202 is configured to perform two-dimensional capturing and primary frequency offset correction on the data of the synchronization segment to obtain a synchronization segment correction frequency offset;
an arbitration module 203, configured to determine a demarcation point of the arbitration segment and the data segment based on a fading amplitude of a correlation peak in the data of the arbitration segment;
and the interpretation module 204 is used for interpreting the data of the data segment based on the synchronous segment correction frequency difference and the demarcation point to complete the receiving of the communication data.
The capturing and tracking device for TDMA burst communication provided by the embodiment comprises the steps of dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining the demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; according to the technical scheme, the synchronous correction frequency difference is determined through the synchronous section, the demarcation point is determined through the judging section, then the data section starts to be subjected to data interpretation by the demarcation point according to the synchronous correction frequency difference, and the data of the finally received data section can be ensured to be more stable and reliable.
Further, the correction module 202 in this embodiment is specifically configured to:
two-dimensional capturing is carried out on the data of the synchronous section;
performing sliding exclusive OR operation on the code element data with the first preset bit length and the data of the synchronization section after the two-dimensional capturing to determine a first correlation peak value;
performing exclusive OR operation on the correlation sequences of the preset groups of band frequency differences and the two-dimensional captured data of the synchronous section respectively to obtain a correlation peak value set corresponding to each group;
and determining a synchronous segment correction frequency difference based on the first correlation peak value and the correlation peak value set.
Further, the correction module 202 in this embodiment is specifically further configured to:
determining the highest correlation peak value in the correlation peak value set;
and comparing the highest correlation peak value with the first correlation peak value to determine a synchronous segment correction frequency difference.
Further, the first preset bit length in this embodiment is 3840;
the correlation sequence of the preset group of band frequency differences is 33 groups of correlation sequences of band frequency differences, wherein the correlation sequences are in a range of +/-80 kHz and in a stepping 5 kHz.
Further, the arbitration module 203 in this embodiment is specifically configured to:
performing exclusive OR operation on the correlation sequence with the second preset bit length and the data of the judging section to determine a correlation peak value in the data of the judging section;
and when the fading amplitude of the correlation peak value in the judging section data is larger than a preset threshold value, determining the position corresponding to the fading amplitude as a demarcation point of the judging section and the data section.
Further, the correlation sequence of the second preset bit length in this embodiment is a correlation sequence of 3840×4 length.
Further, the dividing module 201 in this embodiment is specifically configured to:
repeating the synchronization sequence with the first preset length for preset times to obtain a synchronization section;
spreading the second preset length sequence by two times of different multiples to obtain a judging section;
obtaining a preset number of data code elements through preset multiple spread spectrum to obtain a data segment;
the duration of the synchronization section, the duration of the arbitration section, the duration of the data section and the duration of the guard interval in the communication time slot form the duration of the communication time slot.
Further, the sync segment in this embodiment includes 115200 data symbols, the arbitrated segment includes 115200 data symbols, and the data segment includes 1597440 data symbols;
the duration of the synchronization section is 30ms, the duration of the arbitration section is 30ms, the duration of the data section is 416ms, and the duration of the guard interval in the communication time slot is 24ms.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
As shown in fig. 3, the electronic device may include: processor 310, communication interface (Communications Interface) 320, memory 330 and communication bus 340, wherein processor 310, communication interface 320, memory 330 accomplish communication with each other through communication bus 340. Processor 310 may invoke logic instructions in memory 330 to perform a capture tracking method for TDMA burst communications, the method comprising: dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining a demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; and based on the synchronous segment correction frequency difference and the demarcation point, interpreting the data of the data segment to finish the receiving of the communication data.
Further, the logic instructions in the memory 330 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of performing a method of tracking capture of TDMA burst communications provided by the methods described above, the method comprising: dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining a demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; and based on the synchronous segment correction frequency difference and the demarcation point, interpreting the data of the data segment to finish the receiving of the communication data.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a method of acquisition tracking of TDMA burst communications provided by the methods described above, the method comprising: dividing communication data in a communication time slot into a synchronous section, a judging section and a data section; performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference; determining a demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment; and based on the synchronous segment correction frequency difference and the demarcation point, interpreting the data of the data segment to finish the receiving of the communication data.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method of acquisition tracking for TDMA burst communications, comprising:
dividing communication data in a communication time slot into a synchronous section, a judging section and a data section;
performing two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain synchronous section correction frequency difference;
determining a demarcation point of the arbitrated segment and the data segment based on the fading amplitude of the correlation peak in the data of the arbitrated segment;
interpreting the data of the data segment based on the synchronous segment correction frequency difference and the demarcation point to finish the receiving of the communication data;
the two-dimensional capturing and primary frequency difference correction are carried out on the data of the synchronous section to obtain synchronous section correction frequency difference, which comprises the following steps: two-dimensional capturing is carried out on the data of the synchronous section; performing sliding exclusive OR operation on the code element data with the first preset bit length and the data of the synchronization section after the two-dimensional capturing to determine a first correlation peak value; performing exclusive OR operation on the correlation sequences of the preset groups of band frequency differences and the two-dimensional captured data of the synchronous section respectively to obtain a correlation peak value set corresponding to each group; and determining a synchronous segment correction frequency difference based on the first correlation peak value and the correlation peak value set.
2. The method of acquisition tracking for TDMA burst communications according to claim 1 wherein said determining a synchronization segment correction frequency difference based on said first correlation peak and said set of correlation peaks comprises:
determining the highest correlation peak value in the correlation peak value set;
and comparing the highest correlation peak value with the first correlation peak value to determine a synchronous segment correction frequency difference.
3. The method of acquisition tracking for TDMA burst communications according to claim 1 wherein said first predetermined bit length is 3840;
the correlation sequence of the preset group of band frequency differences is 33 groups of correlation sequences of band frequency differences, wherein the correlation sequences are in a range of +/-80 kHz and in a stepping 5 kHz.
4. The method of claim 1, wherein said determining a demarcation point for said arbitrated segment and said data segment based on a fading amplitude of a correlation peak in data of said arbitrated segment comprises:
performing exclusive OR operation on the correlation sequence with the second preset bit length and the data of the judging section to determine a correlation peak value in the data of the judging section;
and when the fading amplitude of the correlation peak value in the judging section data is larger than a preset threshold value, determining the position corresponding to the fading amplitude as a demarcation point of the judging section and the data section.
5. The method of acquisition tracking for TDMA burst communications according to claim 4 wherein said second predetermined bit length correlation sequence is a 3840 x 4 length correlation sequence.
6. The method for tracking the acquisition of TDMA burst communication according to claim 1 wherein said dividing the communication data in the communication time slot into a synchronization segment, a arbitration segment and a data segment comprises:
repeating the synchronization sequence with the first preset length for preset times to obtain a synchronization section;
spreading the second preset length sequence by two times of different multiples to obtain a judging section;
obtaining a preset number of data code elements through preset multiple spread spectrum to obtain a data segment;
the duration of the synchronization section, the duration of the arbitration section, the duration of the data section and the duration of the guard interval in the communication time slot form the duration of the communication time slot.
7. The method of acquisition tracking for TDMA burst communications according to claim 6 wherein said synchronization segment comprises 115200 data symbols, said arbitration segment comprises 115200 data symbols, and said data segment comprises 1597440 data symbols;
the duration of the synchronization section is 30ms, the duration of the arbitration section is 30ms, the duration of the data section is 416ms, and the duration of the guard interval in the communication time slot is 24ms.
8. An acquisition tracking apparatus for TDMA burst communications, comprising:
the division module is used for dividing communication data in the communication time slot into a synchronous section, a judging section and a data section;
the correction module is used for carrying out two-dimensional capturing and primary frequency difference correction on the data of the synchronous section to obtain a synchronous section correction frequency difference; the method is particularly used for: two-dimensional capturing is carried out on the data of the synchronous section; performing sliding exclusive OR operation on the code element data with the first preset bit length and the data of the synchronization section after the two-dimensional capturing to determine a first correlation peak value; performing exclusive OR operation on the correlation sequences of the preset groups of band frequency differences and the two-dimensional captured data of the synchronous section respectively to obtain a correlation peak value set corresponding to each group; determining a synchronization segment correction frequency difference based on the first correlation peak value and the correlation peak value set;
the judging module is used for determining the demarcation point of the judging section and the data section based on the fading amplitude of the correlation peak value in the data of the judging section;
and the interpretation module is used for interpreting the data of the data segment based on the synchronous segment correction frequency difference and the demarcation point to finish the receiving of the communication data.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements a method of acquisition tracking of TDMA burst communications according to any one of claims 1 to 7 when the program is executed by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310961097.1A CN116683983B (en) | 2023-08-02 | 2023-08-02 | Method, device and equipment for capturing and tracking TDMA burst communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310961097.1A CN116683983B (en) | 2023-08-02 | 2023-08-02 | Method, device and equipment for capturing and tracking TDMA burst communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116683983A CN116683983A (en) | 2023-09-01 |
| CN116683983B true CN116683983B (en) | 2023-11-17 |
Family
ID=87789481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310961097.1A Active CN116683983B (en) | 2023-08-02 | 2023-08-02 | Method, device and equipment for capturing and tracking TDMA burst communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116683983B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003036836A1 (en) * | 2001-10-18 | 2003-05-01 | Linkair Communications,Inc. | Method and device for the capturing of down synchronization in the cdma communication system |
| CN110830411A (en) * | 2019-09-27 | 2020-02-21 | 中国电子科技集团公司第二十九研究所 | Satellite multi-carrier demodulator facing MF-TDMA |
| CN112399551A (en) * | 2020-11-17 | 2021-02-23 | 中国人民解放军战略支援部队信息工程大学 | High-precision synchronization method for short-time burst signals |
-
2023
- 2023-08-02 CN CN202310961097.1A patent/CN116683983B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003036836A1 (en) * | 2001-10-18 | 2003-05-01 | Linkair Communications,Inc. | Method and device for the capturing of down synchronization in the cdma communication system |
| CN1493124A (en) * | 2001-10-18 | 2004-04-28 | 连宇通信有限公司 | Method and device for capturing of down synchronization in CDMA communication system |
| CN110830411A (en) * | 2019-09-27 | 2020-02-21 | 中国电子科技集团公司第二十九研究所 | Satellite multi-carrier demodulator facing MF-TDMA |
| CN112399551A (en) * | 2020-11-17 | 2021-02-23 | 中国人民解放军战略支援部队信息工程大学 | High-precision synchronization method for short-time burst signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116683983A (en) | 2023-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103929391B (en) | A kind of transmitting frequency calibration method and device | |
| CN108494518B (en) | A kind of LTE system small region search method | |
| EP0851638A2 (en) | Communication method and receiving apparatus for OFDM system | |
| CN110891036B (en) | NPRACH timing synchronization estimation method and device | |
| CN101547062A (en) | Method and device for correcting frequency deviation | |
| CN107623933A (en) | The transmission method and device of a kind of initial access signal | |
| CN104883730B (en) | The time synchronization method and device of burst in satellite communication | |
| CN109152042B (en) | Preamble configuration and identification method, base station, terminal and readable storage medium | |
| CN116683983B (en) | Method, device and equipment for capturing and tracking TDMA burst communication | |
| US20210345130A1 (en) | Positioning reference signal transmission method and apparatus, device, and storage medium | |
| CN103595682A (en) | Frame synchronization method, device and receiver for OFDM | |
| CN108900220B (en) | Method, device and modulator for quickly synchronizing multiple user signals | |
| CN110808823A (en) | Sequence mapping method and device of common reference signal, storage medium and terminal | |
| Zhang et al. | Active user detection and data recovery for quasi-asynchronous grant-free random access | |
| CN113472391B (en) | Frequency hopping communication method, device, storage medium and receiver | |
| CN110831143B (en) | Method for indicating and acquiring position of synchronization signal block, base station, terminal and medium | |
| CN107333283B (en) | Random access detection method and device | |
| WO2020135027A1 (en) | Reference signal processing method and device | |
| CN114915390A (en) | Cyclic prefix extension generation and indication method, device and readable storage medium | |
| CN111615187A (en) | Wireless signal synchronization method | |
| CN106713200B (en) | Signal transmission method, collision detection method, channel estimation method, and device thereof | |
| CN110572846A (en) | WIFI elimination method and device in unmanned aerial vehicle signal detection and electronic equipment | |
| CN111757456B (en) | Method and equipment for sending and receiving synchronous priority information | |
| CN111294174B (en) | Method and device for sending and receiving synchronization signal block, storage medium, base station and user terminal | |
| CN103716261B (en) | Frequency-offset estimation method and device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |