CN105527637B - BCH interpretation methods and device in Beidou satellite navigation and positioning system - Google Patents
BCH interpretation methods and device in Beidou satellite navigation and positioning system Download PDFInfo
- Publication number
- CN105527637B CN105527637B CN201510823824.3A CN201510823824A CN105527637B CN 105527637 B CN105527637 B CN 105527637B CN 201510823824 A CN201510823824 A CN 201510823824A CN 105527637 B CN105527637 B CN 105527637B
- Authority
- CN
- China
- Prior art keywords
- data frame
- noise ratio
- data
- signal
- frame
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to satellite navigation and location system field, discloses BCH interpretation methods and the device in a kind of Beidou satellite navigation and positioning system.Including：Obtain the data frame for needing to carry out BCH decodings；Judge whether the frame originating point information of data frame is correct, when the frame originating point information mistake of data frame, then abandon data frame；Signal-noise ratio threshold is set, and when the frame originating point information of data frame is correct, by the signal to noise ratio of data frame compared with signal-noise ratio threshold；If the signal to noise ratio of data frame is more than or equal to signal-noise ratio threshold, BCH decodings are carried out to data frame；If the signal to noise ratio of data frame is less than signal-noise ratio threshold, data frame is abandoned；Or if the signal to noise ratio of data frame is less than signal-noise ratio threshold, abandon the wrong data in data frame, and the correct data in retained data frame simultaneously carries out BCH decodings, it is possible to increase the positional accuracy under Low SNR, while also improve the stability of system.
Description
Technical field
The present invention relates in Beidou satellite navigation and positioning system field, more particularly to a kind of Beidou satellite navigation and positioning system
BCH interpretation methods and device, available under the Low SNR in Beidou satellite navigation and positioning system BCH decoding.
Background technology
BCH code is proposed jointly by R.C.Bose, D.K.Chaudhuri and A.Hocquenghem, is a kind of important error correction
Pattern, information source information sequence pending is divided into message groups by it by one group fixed of K positions, then by each message groups individual transform
Grow into n (n ＞ K) binary digit group, referred to as code word.If the number of message groups is M, the M code word thus obtained
It is all be just referred to as the block code that code length is n, information number is M, be designated as (n, M).The process for message groups being transformed into code word claims
For coding, its inverse process is referred to as decoding.
Bose-Chaudhuri-Hocquenghem Code is introduced in BDStar navigation system (referred to as " dipper system ", similarly hereinafter), its purpose is to reduce
The bit error rate of system.Data frame structure and GPS in the system is close.Transmitting terminal, 10 words (or 20 half are contained in frame data
Word), first character is 30 bits, and preceding 15 bit is frame originating point information, and without Bose-Chaudhuri-Hocquenghem Code, remaining 285 bit is used to transmit
Bose-Chaudhuri-Hocquenghem Code information, to the tenth word from second word, interweaved two-by-two between each two half-word, form remaining frame letter
Breath.Receiving terminal, after judging frame originating point information by the frame information of reception, risen abruptly from the 16th ratio, BCH decodings are carried out to 30 bits, it
Every 30 bit once deinterleave afterwards and BCH is decoded twice, and so circulation is carried out 9 times.
Dipper system encodes the error correcting code as navigation message using BCH (15,11), it can be seen from error correction coding principles,
This coded system energy and the error message of 1 bit can only be corrected, if error message surpasses more than 1 bit, caused original
The navigation message that BCH decoding algorithms calculate the more entangles the more wrong.
Because the wireless channel data transmission quality under actual conditions is generally unstable, can be made under conditions of low signal-to-noise ratio
Into higher error code, every group of satellite navigation message (half-word) mistake is caused to exceed 1 bit so that the orbit parameter letter parsed
There is larger deviation in breath, causes positioning calculation error to increase.The introducing of wrong parameter even can cause location algorithm not receive
Hold back, so as to cause system program to collapse.
The content of the invention
The shortcomings that for above-mentioned prior art, embodiments of the invention are provided in a kind of Beidou satellite navigation and positioning system
BCH interpretation methods and device, former methodical inherent shortcoming can be evaded so that positioning calculation is normally carried out, and is improved in low letter
The positional accuracy made an uproar than under the conditions of, while also improve the stability of system.
To reach above-mentioned purpose, embodiments of the invention, which adopt the following technical scheme that, to be achieved.
Technical scheme one：
A kind of BCH interpretation methods in Beidou satellite navigation and positioning system, methods described include：
The data frame for needing to carry out BCH decodings is obtained, wherein, the data frame includes frame originating point information and Bose-Chaudhuri-Hocquenghem Code successively
Information；
Judge whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame, then described in discarding
Data frame；
Set signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the signal to noise ratio of the data frame with
The signal-noise ratio threshold is compared；
If the signal to noise ratio of the data frame is more than or equal to the signal-noise ratio threshold, BCH is carried out to the data frame
Decoding；
If the signal to noise ratio of the data frame is less than the signal-noise ratio threshold, the data frame is abandoned；Or the if number
It is less than the signal-noise ratio threshold according to the signal to noise ratio of frame, then abandons the wrong data in the data frame, retain in the data frame
Correct data and carry out BCH decodings.
The features of the present invention and further it is improved to：
(1) a plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data, it is described
If the signal to noise ratio of the data frame is less than the signal-noise ratio threshold, the wrong data in the data frame is abandoned, described in reservation
Correct data in data frame simultaneously carries out BCH decodings, and specifically includes：
Obtain a plurality of pointer data of Bose-Chaudhuri-Hocquenghem Code information in the data frame；
Judge whether the check bit in every pointer data is zero successively；
If the check bit in pointer data is not zero, the pointer data is abandoned；
If the check bit in the pointer data is zero, retain the pointer data；
The Bose-Chaudhuri-Hocquenghem Code information for the pointer data composition that all check bits to reservation are zero enters row decoding.
(2) the setting signal-noise ratio threshold, it is specially：
Empirical value of the signal-noise ratio threshold as fixation is set, or, according to the time of Beidou satellite navigation and positioning system
Information, geographical location information adaptive the setting signal-noise ratio threshold.
Technical scheme two：
A kind of BCH code translators in Beidou satellite navigation and positioning system, described device include：
Acquisition module, for obtaining the data frame for needing to carry out BCH decodings, wherein, data frame includes frame originating point information successively
With Bose-Chaudhuri-Hocquenghem Code information；
Judge module, for judging whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame
When, then abandon the data frame；
Setting module, for setting signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the data
The signal to noise ratio of frame is compared with the signal-noise ratio threshold；
Execution module, if the signal to noise ratio for the data frame is more than or equal to the signal-noise ratio threshold, to described
Data frame carries out BCH decodings；
The execution module, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon described in
Data frame；
The execution module, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon described in
Wrong data in data frame, retain the correct data in the data frame and carry out BCH decodings.
The characteristics of technical scheme two and further it is improved to：
(1) a plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data, it is described
Execution module, specifically include following submodule：
Acquisition submodule, for obtaining a plurality of pointer data of Bose-Chaudhuri-Hocquenghem Code information in the data frame；
Judging submodule, for judging whether the check bit in every pointer data is zero successively；
Implementation sub-module, if being not zero for the check bit in pointer data, abandon the pointer data；If the finger
Check bit in pin data is zero, then retains the pointer data；
Submodule is decoded, the Bose-Chaudhuri-Hocquenghem Code information for the pointer data composition for being zero for all check bits to reservation is carried out
Decoding.
(2) setting module, specifically for setting empirical value of the signal-noise ratio threshold as fixation, or, according to north
The adaptive setting signal-noise ratio threshold of the temporal information of bucket satellite navigation and location system, geographical location information.
BCH interpretation methods and device in a kind of Beidou satellite navigation and positioning system provided by the invention, can evade original
The inherent shortcoming of method so that positioning calculation is normally carried out, and improves the positional accuracy under Low SNR, while
Improve the stability of system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow of the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram one；
Fig. 2 is the flow of the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram two；
Fig. 3 is the flow of the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram three；
Fig. 4 is the flow of the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram four；
Fig. 5 is the structure of the BCH code translators in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram one；
Fig. 6 is the structure of the BCH code translators in a kind of Beidou satellite navigation and positioning system provided in an embodiment of the present invention
Schematic diagram two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system, as shown in figure 1, institute
The method of stating comprises the following steps：
The data frame for needing to carry out BCH decodings is obtained, wherein, data frame includes frame originating point information and Bose-Chaudhuri-Hocquenghem Code information successively.
Judge whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame, then described in discarding
Data frame.
It is exemplary, judge whether the frame originating point information of the data frame correctly can be for by the frame head of the data frame received
Information is compared with pre-set frame originating point information, if unanimously, then it is assumed that the frame originating point information of the data frame received is just
Really, otherwise, then it is assumed that the frame originating point information mistake for the data frame being connected to.
Set signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the signal to noise ratio of the data frame with
The signal-noise ratio threshold is compared.
The setting signal-noise ratio threshold, it is specially：Empirical value of the signal-noise ratio threshold as fixation is set, or, according to
The temporal information of Beidou satellite navigation and positioning system, geographical location information adaptive the setting signal-noise ratio threshold.
If the signal to noise ratio of the data frame is more than or equal to the signal-noise ratio threshold, BCH is carried out to the data frame
Decoding；
If the signal to noise ratio of the data frame is less than the signal-noise ratio threshold, the data frame is abandoned, or, if the number
It is less than the signal-noise ratio threshold according to the signal to noise ratio of frame, then abandons the wrong data in the data frame, retain in the data frame
Correct data and carry out BCH decodings.
A plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data, if the institute
The signal to noise ratio for stating data frame is less than the signal-noise ratio threshold, then abandons the wrong data in the data frame, retain the data
Correct data in frame simultaneously carries out BCH decodings, specifically includes：Obtain a plurality of pointer number of Bose-Chaudhuri-Hocquenghem Code information in the data frame
According to；Judge whether the check bit in every pointer data is zero successively；If the check bit in pointer data is not zero, institute is abandoned
State pointer data；If the check bit in the pointer data is zero, retain the pointer data；To all check bits of reservation
The Bose-Chaudhuri-Hocquenghem Code information of the pointer data for being zero composition enters row decoding.
Exemplary, it is most commonly used in Beidou satellite navigation and positioning system to be encoded for BCH (15,11), therefore, the present invention
Embodiment technical scheme is explained in detail with specific practical application as follows：
Dipper system encodes error correcting code as navigation message using BCH (15,11), this coded system energy and can only correct
The error message of 1 bit, if error message surpasses more than 1 bit, the navigation for causing original BCH decoding algorithms to calculate
Text the more entangles the more wrong.
Existing technology not only can not correctly correct error bit information, instead in the case of low signal-to-noise ratio, high bit-error
And more mistakes are brought, cause positioning calculation not accurate enough, even result in program crashing, be illustrated in figure 2 existing BCH decodings
Process.By method provided by the invention, former methodical inherent shortcoming can be evaded so that positioning calculation is normally carried out, and is carried
The high positional accuracy under Low SNR, while also improve the stability of system.
In big-dipper satellite alignment system, using the frame structure information (300 bit) of the data frame of reception, detailed process is as schemed
Shown in 3, first determine whether preceding 15 bit is frame originating point information.If it is not, then all throw away 300 bit data, otherwise, will
31st bit forms 18 half-words after every 15 bit is deinterleaved into 300 bit informations, plus later half in first character
Word, totally 19 half-word information.By judging signal to noise ratio and given threshold value, if signal to noise ratio is less than thresholding, 19 half are taken respectively
4 bit check bits in word are judged, if check bit takes out 11 effective informations when being all 0000, if not 0000, then lose
Abandon 15 bit informations；If be more than thresholding, BCH (15,11) decoding algorithms are carried out to calculate effective information.
For simple flow, operation time is saved, the invention also provides a kind of improved simplified model, simple flow is such as
Shown in Fig. 4.After receiving terminal receives data frame, 15 bits carry out frame head judgement before taking-up.If frame head, then start to compare signal to noise ratio
With the size of thresholding, if less than threshold value, directly the frame structure is thrown away；If not frame head, then by the frame information rear 285
Bit is lost.If being more than threshold value, by the 31st bit, into 300 bit informations, every 15 bit is deinterleaved to form 18 half
Word, along with the 1st half-word after frame head forms 19 half-word information, carry out BCH (15,11) decodings
This programme can effectively improve the stability of a system compared with original technology.BDStar navigation system makes before improvement
The error correcting code as navigation message is encoded with BCH (15,11), under Low SNR, location navigation text may be caused to get over
Entangle more wrong, ultimately cause the collapse of system.Then by the 31st bit, into 300 bit informations, every 15 bit carries out solution friendship to improvement project
18 half-words are formed after knitting, plus the rear half-word in first character, totally 19 half-word information.Then signal to noise ratio and given door are compared
Limit, if signal to noise ratio is less than thresholding, takes 4 bit check bits in 19 half-words to be judged, if check bit is all again respectively
0000, that is, 11 effective informations are taken out, if not 0000, then abandon 15 bit informations；If be more than thresholding, progress BCH (15,
11) decoding algorithm resolves, and draws effective information, can so effectively improve decoding efficiency, improves the stability of a system.
The embodiment of the present invention also provides the BCH code translators in a kind of Beidou satellite navigation and positioning system, as shown in figure 5,
Described device includes：
Acquisition module 1, for obtaining the data frame for needing to carry out BCH decodings, wherein, data frame includes frame originating point information successively
With Bose-Chaudhuri-Hocquenghem Code information.
Judge module 2, for judging whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame
When, then abandon the data frame.
Setting module 3, for setting signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the number
According to the signal to noise ratio of frame compared with the signal-noise ratio threshold.
The setting module, specifically for setting empirical value of the signal-noise ratio threshold as fixation, or, defended according to the Big Dipper
The temporal information of star navigation positioning system, geographical location information adaptive the setting signal-noise ratio threshold.
Execution module 4, if the signal to noise ratio for the data frame is more than or equal to the signal-noise ratio threshold, to described
Data frame carries out BCH decodings.
The execution module 4, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon described in
Data frame.
The execution module 4, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon described in
Wrong data in data frame, retain the correct data in the data frame and carry out BCH decodings.
A plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data, such as Fig. 6 institutes
Show, the execution module 4, specifically include following submodule：
Acquisition submodule 401, for obtaining a plurality of pointer data of Bose-Chaudhuri-Hocquenghem Code information in the data frame.Judge submodule
Block 402, for judging whether the check bit in every pointer data is zero successively.Implementation sub-module 403, if for pointer data
In check bit be not zero, then abandon the pointer data；If the check bit in the pointer data is zero, retain the finger
Pin data.Submodule 404 is decoded, the Bose-Chaudhuri-Hocquenghem Code information for the pointer data composition for being zero for all check bits to reservation is entered
Row decoding.
BCH interpretation methods and device in a kind of Beidou satellite navigation and positioning system provided by the invention, can evade original
The inherent shortcoming of method so that positioning calculation is normally carried out, and improves the positional accuracy under Low SNR, while
Improve the stability of system.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system, it is characterised in that methods described includes：
The data frame for needing to carry out BCH decodings is obtained, wherein, the data frame includes frame originating point information and Bose-Chaudhuri-Hocquenghem Code information successively；
Judge whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame, then abandon the data
Frame；
Set signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the signal to noise ratio of the data frame with it is described
Signal-noise ratio threshold is compared；
If the signal to noise ratio of the data frame is more than or equal to the signal-noise ratio threshold, BCH decodings are carried out to the data frame；
If the signal to noise ratio of the data frame is less than the signal-noise ratio threshold, the data frame is abandoned；Or the if letter of the data frame
Make an uproar than less than the signal-noise ratio threshold, then abandoning the wrong data in the data frame, retaining the positive exact figures in the data frame
According to and carry out BCH decodings；
Wherein, a plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data；
If the signal to noise ratio of the data frame is less than the signal-noise ratio threshold, the wrong data in the data frame is abandoned,
Retain the correct data in the data frame and carry out BCH decodings, specifically include：
Obtain a plurality of pointer data of Bose-Chaudhuri-Hocquenghem Code information in the data frame；
Judge whether the check bit in every pointer data is zero successively；
If the check bit in pointer data is not zero, the pointer data is abandoned；
If the check bit in the pointer data is zero, retain the pointer data；
The Bose-Chaudhuri-Hocquenghem Code information for the pointer data composition that all check bits to reservation are zero enters row decoding.
2. the BCH interpretation methods in a kind of Beidou satellite navigation and positioning system according to claim 1, it is characterised in that
The setting signal-noise ratio threshold, it is specially：
Set the signal-noise ratio threshold as fixation empirical value, or, according to the temporal information of Beidou satellite navigation and positioning system,
The geographical location information adaptive setting signal-noise ratio threshold.
3. the BCH code translators in a kind of Beidou satellite navigation and positioning system, it is characterised in that described device includes：
Acquisition module, for obtaining the data frame for needing to carry out BCH decodings, wherein, the data frame includes frame originating point information successively
With Bose-Chaudhuri-Hocquenghem Code information；
Judge module, for judging whether the frame originating point information of data frame is correct, when the frame originating point information mistake of the data frame, then
Abandon the data frame；
Setting module, for setting signal-noise ratio threshold, and when the frame originating point information of the data frame is correct, by the data frame
Signal to noise ratio is compared with the signal-noise ratio threshold；
Execution module, if the signal to noise ratio for the data frame is more than or equal to the signal-noise ratio threshold, to the data
Frame carries out BCH decodings；
The execution module, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon the data
Frame；
The execution module, if the signal to noise ratio for being additionally operable to the data frame is less than the signal-noise ratio threshold, abandon the data
Wrong data in frame, retain the correct data in the data frame and carry out BCH decodings；
Wherein, a plurality of pointer data is included in the Bose-Chaudhuri-Hocquenghem Code information, check bit all be present in every pointer data；
The execution module, specifically include following submodule：
Acquisition submodule, for obtaining a plurality of pointer data of Bose-Chaudhuri-Hocquenghem Code information in the data frame；
Judging submodule, for judging whether the check bit in every pointer data is zero successively；
Implementation sub-module, if being not zero for the check bit in pointer data, abandon the pointer data；If the pointer number
Check bit in is zero, then retains the pointer data；
Submodule is decoded, the Bose-Chaudhuri-Hocquenghem Code information for the pointer data composition for being zero for all check bits to reservation enters row decoding.
4. the BCH code translators in a kind of Beidou satellite navigation and positioning system according to claim 3, it is characterised in that
The setting module, specifically for setting empirical value of the signal-noise ratio threshold as fixation, or, led according to big-dipper satellite
The adaptive setting signal-noise ratio threshold of the temporal information for alignment system of navigating, geographical location information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823824.3A CN105527637B (en) | 2015-11-24 | 2015-11-24 | BCH interpretation methods and device in Beidou satellite navigation and positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823824.3A CN105527637B (en) | 2015-11-24 | 2015-11-24 | BCH interpretation methods and device in Beidou satellite navigation and positioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105527637A CN105527637A (en) | 2016-04-27 |
| CN105527637B true CN105527637B (en) | 2017-12-22 |
Family
ID=55769973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823824.3A Active CN105527637B (en) | 2015-11-24 | 2015-11-24 | BCH interpretation methods and device in Beidou satellite navigation and positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105527637B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107743036B (en) * | 2016-08-24 | 2020-09-25 | 中国科学院微电子研究所 | BCH code decoding method |
| CN108549096B (en) * | 2018-04-17 | 2021-10-01 | 中国科学院微电子研究所 | Method and device for error correction and decoding of GPS navigation message |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102170A (en) * | 2006-07-04 | 2008-01-09 | 北京信威通信技术股份有限公司 | A method and system for determining frames in wireless communication system |
| CN103278826A (en) * | 2013-05-14 | 2013-09-04 | 南京航空航天大学 | Beidou B1 frequency point intermediate frequency signal simulation method |
| CN103592661A (en) * | 2013-11-26 | 2014-02-19 | 中国科学院嘉兴微电子与系统工程中心 | Dipper ephemeris collecting method |
| CN103901444A (en) * | 2014-03-20 | 2014-07-02 | 南京航空航天大学 | Beidou satellite navigation receiver bit synchronization method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8583981B2 (en) * | 2006-12-29 | 2013-11-12 | Marvell World Trade Ltd. | Concatenated codes for holographic storage |
-
2015
- 2015-11-24 CN CN201510823824.3A patent/CN105527637B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102170A (en) * | 2006-07-04 | 2008-01-09 | 北京信威通信技术股份有限公司 | A method and system for determining frames in wireless communication system |
| CN103278826A (en) * | 2013-05-14 | 2013-09-04 | 南京航空航天大学 | Beidou B1 frequency point intermediate frequency signal simulation method |
| CN103592661A (en) * | 2013-11-26 | 2014-02-19 | 中国科学院嘉兴微电子与系统工程中心 | Dipper ephemeris collecting method |
| CN103901444A (en) * | 2014-03-20 | 2014-07-02 | 南京航空航天大学 | Beidou satellite navigation receiver bit synchronization method |
Non-Patent Citations (3)
| Title |
|---|
| Development of a PC-Based Software Receiver for the Reception of Beidou Navigation Satellite Signals;Jyh-Ching Juang et al.;《THE JOURNAL OF NAVIGATION》;20131231;第66卷;第701-718页 * |
| 导航电文BCH(15,11)编码的低复杂度软判决译码;朱建锋等;《第四届中国卫星导航学术年会论文集》;20130515;第1-4页 * |
| 导航系统BCH码软判决译码方案与实现;汪峰等;《计算机工程与设计》;20150731;第36卷(第7期);第1686-1689页，第1726页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105527637A (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190007067A1 (en) | Interleaving and mapping method and deinterleaving and demapping method for ldpc codeword | |
| AU650399B1 (en) | Improved error correcting decoder and decoding method for receivers in digital cellular communication | |
| CN1096163C (en) | Multirate serial viterbi decoder for code division multiple access system applications | |
| US20010004761A1 (en) | Method and apparatus for providing error protection for over the air file transfer | |
| CN100486117C (en) | Communications device and wireless communications system | |
| US8631309B2 (en) | Forward error correction with extended effective block size | |
| US8032812B1 (en) | Error correction decoding methods and apparatus | |
| US7480852B2 (en) | Method and system for improving decoding efficiency in wireless receivers | |
| CN1799209A (en) | Apparatus and method for receiving a forward packet data control channel in a mobile communication system supporting packet data service | |
| CN105527637B (en) | BCH interpretation methods and device in Beidou satellite navigation and positioning system | |
| US20030093740A1 (en) | Iterative hard decoding method for multidimensional SPC | |
| CN106656216A (en) | Modified soft-input soft-output decoding method for Turbo product codes | |
| CN112202530B (en) | Channel blind detection method and device, communication device and storage medium | |
| CN102148665A (en) | Decoding method for LT (language translation) codes | |
| CN102742164B (en) | Decoding method and decoding device | |
| US11012100B2 (en) | Convolutional precoding and decoding of polar codes | |
| CN104280747B (en) | A kind of satellite navigation message fault-tolerance approach and device | |
| CN112332869A (en) | Improved TPC iteration method and apparatus | |
| CN103746773B (en) | Method and system for correcting errors of decoded data by using UMTS (Universal Mobile Telecommunications System) receiver | |
| CN103138881B (en) | Decoding method and equipment | |
| EP3258291A1 (en) | Techniques for transmitting and receiving gnss navigation messages | |
| CN101170400A (en) | Synchronization frame encoding and decoding method and device | |
| CN111224741B (en) | BCH code decoding method and decoder for satellite navigation and satellite navigation receiver | |
| US10270473B2 (en) | Turbo decoders with stored column indexes for interleaver address generation and out-of-bounds detection and associated methods | |
| US8762817B1 (en) | Method and apparatus for determining the start of a data field in a data frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |