CN113132070A - High-speed data transmission baseband data no-frame structure error code statistical system - Google Patents
High-speed data transmission baseband data no-frame structure error code statistical system Download PDFInfo
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- CN113132070A CN113132070A CN202110413578.XA CN202110413578A CN113132070A CN 113132070 A CN113132070 A CN 113132070A CN 202110413578 A CN202110413578 A CN 202110413578A CN 113132070 A CN113132070 A CN 113132070A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F18/2193—Validation; Performance evaluation; Active pattern learning techniques based on specific statistical tests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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Abstract
The invention discloses a high-speed data transmission baseband data frame-free structure error code statistical system, and belongs to the technical field of communication. The system comprises a frame length setting unit, a front-end data cache module, a bit-by-bit comparison module, a standard frame module and an error code comparison statistical module; the frame length setting unit receives the frame length set by monitoring, the front-end data cache module intercepts data with corresponding length for caching according to the data received by the frame length setting unit, the bit-by-bit comparison module compares the data in the front-end data cache module bit by bit, the comparison result is transmitted to the standard frame module, the data in the standard frame module is used as a correct data frame to perform error code comparison with the data in the front-end data cache module, and the statistical module compares the result and outputs the error code statistical result. The invention has the characteristic of autonomously learning data frames, and can solve the problem of low performance of a satellite data transmission system caused by error rate statistics and frame identification classification under the condition of high-speed transmission in the prior art.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a high-speed data transmission baseband data frame-free structure error code statistical system which can be used for error code statistics of a ground receiving terminal of a satellite data transmission system.
Background
The transmission of satellite load data is an indispensable intermediate channel for information acquisition, transmission, processing and application of the satellite. With the continuous improvement of the data transmission rate and the continuous increase of the satellite load data quantity, the task of improving the data transmission performance is urgent, and the statistical capability of improving the bit error rate of satellite data is an important factor for improving the satellite data processing performance.
However, due to unpredictability of satellite data, the conventional method for counting errors of a frame-free structure for storing fixed frames into a RAM is not applicable any more.
Disclosure of Invention
In view of the above, the present invention provides a frame-structure-free error code statistics system for high-speed data transmission baseband data, which can perform autonomous learning and solve the problem of low performance of a satellite data transmission data system caused by error code rate statistics under a high code rate condition in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-speed data transmission baseband data no-frame structure error code statistical system comprises a frame length setting module 1, a front-end data cache module 2, a bit-by-bit comparison module 3, a standard frame module 4 and an error code comparison statistical module 5;
the frame length setting module 1 receives the frame length input by external monitoring and transmits the frame length to the front-end data cache module 2;
the front-end data cache module 2 intercepts data segments with corresponding lengths according to the frame length and caches the data segments;
the bit-by-bit comparison module 3 performs bit-by-bit comparison on the data segments in the front-end data cache module 2 and transmits the comparison result to the standard frame module 4;
the standard frame module 4 is used for storing comparison results;
the error code comparison statistical module 5 takes the data in the standard frame module 4 as the correct data frame, compares the data with the data segment in the front-end data cache module 2, and calculates and outputs the error code result.
Further, the bit-by-bit comparison module 3 comprises an operation module 6 and a result judgment module 7; wherein:
the operation module 6 compares the data segments in the front-end data cache module 2 bit by bit, performs a minus 1 operation when the input data is 0, performs a plus 1 operation when the input data is 1, and finally sends the operation result to the result judgment module 7;
the result judgment module 7 judges the received operation result, when the operation result is greater than 0, the bit output is 1, and when the operation result is less than 0, the bit output is 0.
Further, the error code comparison statistic module 5 comprises a data frame comparison module 8 and an error code statistic module 9; wherein:
the data frame comparison module 8 takes the data in the standard frame module 4 as a correct data frame, performs error code comparison with the data segment in the front-end data cache module 2, and outputs the comparison result of each bit to the error code statistic module 9;
the error code statistic module 9 makes statistics of the received comparison result data and outputs the result of the statistics.
Compared with the background technology, the invention has the following advantages:
1. the invention can independently learn the repeated data with fixed frame length transmitted by the satellite.
2. The invention can carry out error code statistics on the N groups of data frames which are cached.
Drawings
Fig. 1 is a schematic block diagram of an error statistics system in an embodiment of the invention.
FIG. 2 is a schematic diagram of a bit-by-bit alignment module according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an error comparison statistic module in an embodiment of the invention.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Referring to fig. 1, a high-speed data transmission baseband data no-frame structure error code statistical system includes a frame length setting module 1, a front-end data cache module 2, a bit-by-bit comparison module 3, a standard frame module 4, and an error code comparison statistical module 5. The front-end data cache modules 2 are multiple and all in a first-in first-out (FIFO) form. Embodiments connect the lines as in fig. 1. Wherein:
the frame length setting module 1 receives the frame length input by external monitoring and transmits the frame length to the front-end data cache module 2;
the front-end data cache module 2 intercepts data segments with corresponding lengths according to the frame length and caches the data segments;
the bit-by-bit comparison module 3 performs bit-by-bit comparison on the data segments in the front-end data cache module 2 and transmits the comparison result to the standard frame module 4;
the standard frame module 4 is used for storing comparison results;
the error code comparison statistical module 5 takes the data in the standard frame module 4 as the correct data frame, compares the data with the data segment in the front-end data cache module 2, and calculates and outputs the error code result.
The working process of the system is as follows:
the frame length setting module 1 receives the frame length input by external monitoring, the front end data cache module 2 intercepts the data with corresponding length for caching according to the data received by the frame length setting module 1, the whole system can independently learn N data sections, the cached data is subjected to bit-by-bit comparison in the bit-by-bit comparison module 3, the comparison result is transmitted to the standard frame module 4, the data in the standard frame module is used as the correct data frame to be compared with the data in the front end data cache module in the error code comparison statistical module 5, and the error code statistical result is output.
The bit-by-bit comparison module 3 comprises an operation module 6 and a result judgment module 7; embodiments connect the lines as in fig. 2. The operation module 6 compares the data frames cached at the front end bit by bit, performs a subtraction operation of 1 when the input data is 0, performs an addition operation of 1 when the input data is 1, and sends the operation result to the result judgment module 7; the result judging module 7 judges the received operation result, and when the operation result is greater than 0, the bit output is 1, and when the operation result is less than 0, the bit output is 0.
The error code comparison statistical module 5 comprises a data frame comparison module 8 and an error code statistical module 9; embodiments connect the lines as in fig. 3. The data frame comparison module 8 compares the data in the standard frame module 4 as the standard frame of the data in the N buffer modules with the data frame in the front-end data buffer module 2, and outputs the comparison result of each bit to the error code statistic module 9, and the error code statistic module 9 performs specified operation on the received comparison result data and outputs and displays the statistic result.
In a word, compared with the traditional error code detection method, the method has the characteristic of autonomously learning the data frame, and can solve the problem of low performance of the satellite data transmission system caused by error rate statistics and frame identification classification under the condition of high-speed transmission in the prior art.
Claims (3)
1. A high-speed data transmission baseband data no-frame structure error code statistical system is characterized by comprising a frame length setting module (1), a front-end data cache module (2), a bit-by-bit comparison module (3), a standard frame module (4) and an error code comparison statistical module (5);
the frame length setting module (1) receives the frame length input by external monitoring and transmits the frame length to the front-end data cache module (2);
the front-end data cache module (2) intercepts data segments with corresponding lengths according to the frame length and caches the data segments;
the bit-by-bit comparison module (3) performs bit-by-bit comparison on the data segments in the front-end data cache module (2) and transmits a comparison result to the standard frame module (4);
the standard frame module (4) is used for storing comparison results;
and the error code comparison statistical module (5) takes the data in the standard frame module (4) as a correct data frame, compares the correct data frame with the error code of the data segment in the front-end data cache module (2), and counts to obtain an error code result and outputs the error code result.
2. The system according to claim 1, wherein the bit-by-bit comparing module (3) comprises an arithmetic module (6) and a result determining module (7); wherein:
the operation module (6) compares the data segments in the front-end data cache module (2) bit by bit, performs subtraction 1 operation when the input data is 0, performs addition 1 operation when the input data is 1, and finally sends the operation result to the result judgment module (7);
the result judging module (7) judges the received operation result, when the operation result is larger than 0, the bit output is 1, and when the operation result is smaller than 0, the bit output is 0.
3. The system according to claim 1, wherein the error comparison statistic module (5) comprises a data frame comparison module (8) and an error statistic module (9); wherein:
the data frame comparison module (8) takes the data in the standard frame module (4) as a correct data frame, carries out error code comparison with the data segment in the front-end data cache module (2), and outputs the comparison result of each bit to the error code statistic module (9);
and the error code counting module (9) counts the received comparison result data and outputs the counted result.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307148A (en) * | 2011-09-22 | 2012-01-04 | 北京铁路信号有限公司 | Method for determining bit error rate of transponder message |
| CN105141352A (en) * | 2015-07-24 | 2015-12-09 | 哈尔滨工业大学 | Satellite high-speed data transmission baseband data error statistics and frame sequencing processing system and method |
| CN106788675A (en) * | 2016-12-05 | 2017-05-31 | 中国资源卫星应用中心 | Using the method for null frame data statistics satellite in orbit initial data error code |
| WO2021008248A1 (en) * | 2019-07-12 | 2021-01-21 | 天地融科技股份有限公司 | Data frame reception method and device and communication method and system |
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- 2021-04-16 CN CN202110413578.XA patent/CN113132070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307148A (en) * | 2011-09-22 | 2012-01-04 | 北京铁路信号有限公司 | Method for determining bit error rate of transponder message |
| CN105141352A (en) * | 2015-07-24 | 2015-12-09 | 哈尔滨工业大学 | Satellite high-speed data transmission baseband data error statistics and frame sequencing processing system and method |
| CN106788675A (en) * | 2016-12-05 | 2017-05-31 | 中国资源卫星应用中心 | Using the method for null frame data statistics satellite in orbit initial data error code |
| WO2021008248A1 (en) * | 2019-07-12 | 2021-01-21 | 天地融科技股份有限公司 | Data frame reception method and device and communication method and system |
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