CN113676240B - Data transmission method, device and system based on high-performance LDPC code punching - Google Patents

Data transmission method, device and system based on high-performance LDPC code punching Download PDF

Info

Publication number
CN113676240B
CN113676240B CN202110753353.9A CN202110753353A CN113676240B CN 113676240 B CN113676240 B CN 113676240B CN 202110753353 A CN202110753353 A CN 202110753353A CN 113676240 B CN113676240 B CN 113676240B
Authority
CN
China
Prior art keywords
module
ldpc
information sequence
punching
puncturing
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
Application number
CN202110753353.9A
Other languages
Chinese (zh)
Other versions
CN113676240A (en
Inventor
王思鑫
黄新明
李井源
刘增军
赵鑫
唐小妹
张可
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National University of Defense Technology
Original Assignee
National University of Defense Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National University of Defense Technology filed Critical National University of Defense Technology
Priority to CN202110753353.9A priority Critical patent/CN113676240B/en
Publication of CN113676240A publication Critical patent/CN113676240A/en
Application granted granted Critical
Publication of CN113676240B publication Critical patent/CN113676240B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18517—Transmission equipment in earth stations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
    • H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
    • H03M13/1148—Structural properties of the code parity-check or generator matrix
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/635—Error control coding in combination with rate matching
    • H03M13/6362—Error control coding in combination with rate matching by puncturing
    • H03M13/6368—Error control coding in combination with rate matching by puncturing using rate compatible puncturing or complementary puncturing
    • H03M13/6393—Rate compatible low-density parity check [LDPC] codes
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • 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)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Probability & Statistics with Applications (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Astronomy & Astrophysics (AREA)
  • Mathematical Physics (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Error Detection And Correction (AREA)

Abstract

The invention discloses a data transmission method, a device and a system based on high-performance LDPC code punching, wherein the method comprises a ground station transmitting stage and a ground station receiving stage; the device comprises a CRC encoding module, an LDPC encoding module, a punching module, a signal sending module, a signal receiving module, a punching recovery module, an LDPC decoding module and a CRC checking module, and the system comprises at least 2 ground stations and satellites comprising the device. The code rate compatibility of the LDPC codes is realized by punching the sequence after the LDPC codes are coded; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate, reject the low order of the sequence, the punching mode is simple, can reduce the complexity of punching while guaranteeing the decoding performance, can raise performance and efficiency of communication between stations in the ground operation control system of the satellite navigation system effectively.

Description

Data transmission method, device and system based on high-performance LDPC code punching
Technical Field
The invention relates to the field of satellite navigation signals, in particular to a data transmission method, a device and a system based on high-performance LDPC code punching.
Background
In a satellite navigation system ground operation and control system, communication is required between a plurality of ground stations, such as data transmission between a master control station and an injection station. At present, the communication between ground stations of the Beidou satellite navigation system adopts a spread spectrum signal system and a low density check code (LDPC) coding mode, and different coding code rates are used when the information rates of different communication service types between the stations are different. The code rate compatible LCPC code only using a pair of codecs can greatly reduce the complexity of hardware implementation, and the punching is an effective method for constructing the code rate compatible LDPC code. Puncturing results in a loss of LDPC coding performance and an increase in coding complexity.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a data transmission method, a device and a system based on high-performance LDPC code punching, which can effectively improve the decoding performance and reduce the punching complexity.
The data transmission method based on the high-performance LDPC code puncturing according to the first aspect of the present invention comprises the following steps:
the ground station transmitting stage:
performing CRC coding on a first information sequence to be transmitted;
performing LDPC coding with a fixed code rate on the first information sequence after CRC coding;
the method comprises the steps that a first information sequence after LDPC coding is punched according to an actually needed code rate, the high order of the information sequence is reserved, and the low order of the first information sequence is removed, so that a punched information sequence is formed;
modulating the first information sequence after punching to form an inter-station communication signal, and broadcasting the inter-station communication signal to a satellite through radio frequency;
a ground station receiving stage:
receiving an inter-station communication signal forwarded by a satellite and demodulating the inter-station communication signal to obtain a second information sequence corresponding to the first information sequence;
restoring the punching node of the demodulated inter-station communication signal, and zero filling in the low order of the eliminated second information sequence;
performing LDPC decoding on the second information sequence after the punching recovery;
and performing CRC on the second information sequence after LDPC decoding to recover the original first information sequence.
The data transmission method based on the high-performance LDPC code puncturing according to the first aspect of the present invention has at least the following technical effects: the embodiment of the invention realizes the code rate compatibility of the LDPC code by punching the sequence after the LDPC coding; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate, reject the low order of the sequence, the punching mode is simple, can reduce the complexity of punching while guaranteeing the decoding performance, can raise performance and efficiency of communication between stations in the ground operation control system of the satellite navigation system effectively.
According to some embodiments of the invention, the CRC encoding in the ground station transmit stage employs a CRC24 check algorithm.
According to some embodiments of the invention, the LDPC encoding in the ground station transmit phase employs a 1/2 code rate.
According to some embodiments of the invention, the LDPC encoding in the ground station transmission stage employs a 1/3 code rate.
According to some embodiments of the present invention, in the step of puncturing the LDPC encoded information sequence according to the actual required code rate, the number of puncturing nodes is calculated according to the original code rate and the required code rate of the LDPC.
The data transmission device based on the high-performance LDPC code punching comprises a CRC coding module, a data transmission module and a data transmission module, wherein the CRC coding module is used for carrying out CRC coding on an information sequence to be transmitted; the LDPC coding module is connected with the CRC coding module and is used for performing LDPC coding with a fixed code rate on the information sequence after the CRC coding; the punching module is connected with the LDPC coding module and is used for punching the LDPC coded sequence according to the actually required code rate; the signal sending module is connected with the punching module and used for modulating the punched sequence to form an inter-station communication signal and broadcasting the inter-station communication signal to a satellite through radio frequency; the signal receiving module is used for receiving and demodulating an inter-station communication signal forwarded by a satellite; the punching recovery module is connected with the signal receiving module and is used for recovering punching nodes of demodulated inter-station communication signals; the LDPC decoding module is connected with the punching recovery module and is used for LDPC decoding the information sequence after punching recovery; and the CRC check module is connected with the LDPC decoding module and is used for performing CRC check on the LDPC decoded information sequence to recover the original information sequence.
The data transmission device based on high-performance LDPC code puncturing according to the embodiment of the second aspect of the present invention has at least the following technical effects: the embodiment of the invention realizes the code rate compatibility of the LDPC code by punching the sequence after the LDPC coding; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate and reject the low order of the sequence, the punching mode is simple, the complexity of punching can be reduced while the decoding performance is ensured, and the performance and the efficiency of inter-station communication in the ground operation control system of the satellite navigation system can be effectively improved.
The data transmission system based on high-performance LDPC code puncturing according to the third aspect of the present invention comprises at least 2 ground stations and a satellite, wherein the transmitting end of any one of the ground stations comprises the above CRC encoding module, LDPC encoding module, puncturing module and signal transmitting module; the satellite is used for inter-station communication signals forwarded between ground stations, and the receiving ends of one or more of the rest ground stations comprise the signal receiving module, the puncturing recovery module, the LDPC decoding module and the CRC checking module.
The data transmission system based on high-performance LDPC code puncturing according to the third aspect of the present invention has at least the following technical effects: the embodiment of the invention realizes the code rate compatibility of the LDPC code by punching the sequence after the LDPC coding; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate, reject the low order of the sequence, the punching mode is simple, can reduce the complexity of punching while guaranteeing the decoding performance, can raise performance and efficiency of communication between stations in the ground operation control system of the satellite navigation system effectively.
The computer device according to the fourth aspect of the present invention comprises a memory storing a computer program and a processor for implementing the above-mentioned data transmission method based on puncturing by a high performance LDPC code when the computer program is executed.
According to the computer device of the fourth aspect of the present invention, at least the following technical effects are achieved: the embodiment of the invention realizes the code rate compatibility of the LDPC code by punching the sequence after the LDPC coding; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate, reject the low order of the sequence, the punching mode is simple, can reduce the complexity of punching while guaranteeing the decoding performance, can raise performance and efficiency of communication between stations in the ground operation control system of the satellite navigation system effectively.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a diagram of an application scenario of a data transmission method based on high-performance LDPC code puncturing in an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a data transmission method based on high-performance LDPC code puncturing according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a data frame structure of a data transmission method based on high-performance LDPC code puncturing according to an embodiment of the present invention;
FIG. 4 is a block diagram of a data transmission apparatus based on high performance LDPC code puncturing according to an embodiment of the present invention;
fig. 5 is a block diagram of a data transmission system based on puncturing by a high-performance LDPC code in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The embodiment of the invention relates to a data transmission method based on high-performance LDPC code punching, which is applied to the application environment shown in FIG. 1. The transmitting terminals of the ground station 100 and the ground station 200 broadcast communication signals to the satellite, and the receiving terminals of the ground station 100 and the ground station 200 receive communication signals of other ground stations transmitted by the satellite.
Referring to fig. 2, the detailed steps of the data transmission method based on puncturing by the high performance LDPC code in this embodiment are as follows:
s100, a transmitting end of the ground station 100 carries out CRC coding on a first information sequence to be transmitted;
in particular, CRC coding is a kind of cyclic redundancy check code. Referring to fig. 3, in this embodiment, the 12260-bit first information sequence is equally divided into 10 segments, each information segment is 1226 bits, a CRC-24 scheme is adopted, and a check code generates a polynomial of
f＝x 24 +x 23 +x 18 +x 17 +x 14 +x 11 +x 10 +x 7 +x 6 +x 5 +x 4 +x 3 +x+1
Of course, other types of CRC encoding may be selected by the present invention, and the generated check bits and the first information sequence are entered into the LDPC encoder together.
S200, the transmitting end of the ground station 100 performs LDPC coding with a fixed code rate on the CRC coded sequence;
specifically, LDPC encoding may take a common code rate, such as 1/2,1/3, etc. Referring to fig. 3, the present embodiment adopts the code rate 1/2 LDPC coding, and each symbol segment has 2500 symbols after coding.
S300, a transmitting end of the ground station 100 punches the LDPC coded first information sequence according to the actually required code rate, retains the high order of the sequence, and rejects the low order of the sequence to form a punched first information sequence;
specifically, the number of the punching nodes is calculated according to the original code rate and the required code rate of the LDPC. Referring to fig. 3, the actually required code rate of the system is 0.537, while the original code rate is 0.5, therefore, the number of nodes to be punctured is 172, i.e. each symbol segment retains the high order bits 2328syms, and the low order bits 172syms are removed to form a 23280syms symbol segment together.
S400, modulating the punched first information sequence by a transmitting end of the ground station 100 to form an inter-station communication signal, and broadcasting the inter-station communication signal to a satellite through radio frequency;
s500, receiving an inter-station communication signal transmitted by the ground station 100 and forwarded by a satellite by a receiving end of the ground station 200, and demodulating the inter-station communication signal;
s600, a receiving end of the ground station 200 recovers the punching nodes of the demodulated inter-station communication signals and zero padding is carried out on the low order of the sequence which is removed;
specifically, the demodulated inter-station communication signals are grouped, each 2328syms is a group of symbol segments, and 170 0s are complemented at the lower bits of each group of symbol segments.
S700, the receiving end of the ground station 200 performs LDPC decoding on the second information sequence after the punching recovery;
s800, the receiving end of the ground station 200 performs CRC check on the second information sequence after LDPC decoding to recover the original first information sequence.
Referring to fig. 4, the present invention also relates to a data transmission apparatus based on high performance LDPC code puncturing, comprising a CRC encoding module 110, an LDPC encoding module 120, a puncturing module 130, a signal transmitting module 140, a signal receiving module 210, a puncturing recovery module 220, an LDPC decoding module 230, and a CRC check module 240.
The CRC encoding module 110 is configured to perform CRC encoding on a first information sequence to be sent; the LDPC encoding module 120 is connected to the CRC encoding module 110 and configured to perform LDPC encoding with a fixed code rate on the CRC-encoded first information sequence; the puncturing module 130 is connected to the LDPC encoding module 120 for puncturing the LDPC encoded first information sequence according to an actual required code rate; the signal sending module 140 is connected to the puncturing module 130, and is configured to modulate the punctured first information sequence to form an inter-station communication signal, and send the inter-station communication signal to a satellite through radio frequency broadcasting; the signal receiving module 210 is configured to receive and demodulate an inter-station communication signal forwarded by a satellite; the puncture recovery module 220 is connected to the signal receiving module 210 for recovering a punctured node of the demodulated inter-station communication signal; the LDPC decoding module 230 is connected to the puncture recovery module 220 for LDPC decoding of the second information sequence after puncture recovery; the CRC check module 240 is connected to the LDPC decoding module 230 for performing CRC check on the LDPC decoded second information sequence to recover the original first information sequence.
Referring to fig. 5, the present invention also relates to a data transmission system based on high performance LDPC code puncturing, comprising 2 ground stations and a satellite, wherein a transmitting end of the ground station 100 comprises the CRC encoding module 110, the LDPC encoding module 120, the puncturing module 130 and the signal transmitting module 140 of fig. 4; the receiving end of the ground station 200 includes a signal receiving module 210, a puncture recovery module 220, an LDPC decoding module 230, and a CRC check module 240 of fig. 4.
The invention also relates to a computer device, comprising a memory and a processor, wherein the memory stores computer programs, and the processor is used for implementing the data transmission method based on puncturing of high-performance LDPC codes of FIG. 2 when the processor executes the computer programs.
In summary, the embodiment of the present invention implements code rate compatibility of the LDPC code by puncturing the sequence after LDPC encoding; and the punching mode is to reserve the high order of the sequence after the coding according to the code rate, reject the low order of the sequence, the punching mode is simple, can reduce the complexity of punching while guaranteeing the decoding performance, can raise performance and efficiency of communication between stations in the ground operation control system of the satellite navigation system effectively.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. A data transmission method based on high-performance LDPC code punching is characterized by comprising the following steps:
the ground station transmitting stage:
performing CRC coding on a first information sequence to be transmitted;
performing LDPC coding with a fixed code rate on the first information sequence after CRC coding;
the method comprises the steps of punching a first information sequence after LDPC coding according to an actually needed code rate, reserving high bits of the information sequence, and removing low bits of the first information sequence to form a punched information sequence;
modulating the punched first information sequence to form an inter-station communication signal, and broadcasting the inter-station communication signal to a satellite through radio frequency;
a ground station receiving stage:
receiving an inter-station communication signal forwarded by a satellite and demodulating the inter-station communication signal to obtain a second information sequence corresponding to the first information sequence;
restoring the punching node of the demodulated inter-station communication signal, and zero filling in the low order of the eliminated second information sequence;
performing LDPC decoding on the second information sequence after the punching recovery;
and performing CRC on the second information sequence after the LDPC decoding to recover the original first information sequence.
2. The data transmission method based on puncturing by high-performance LDPC codes according to claim 1, wherein: and CRC24 checking algorithm is adopted in CRC coding in the transmitting stage of the ground station.
3. The data transmission method based on puncturing by high-performance LDPC codes according to claim 1, wherein: and the LDPC coding in the transmitting stage of the ground station adopts a 1/2 code rate.
4. The data transmission method based on puncturing by high-performance LDPC codes according to claim 1, wherein: the LDPC coding in the ground station transmitting stage adopts 1/3 code rate.
5. The data transmission method based on puncturing by high-performance LDPC codes according to claim 1, wherein: and in the step of punching the information sequence coded by the LDPC according to the actually required code rate, the number of punching nodes is calculated according to the original code rate and the required code rate of the LDPC.
6. A data transmission device based on high-performance LDPC code puncturing, comprising:
a CRC coding module (110) for performing CRC coding on an information sequence to be transmitted;
the LDPC encoding module (120), the LDPC encoding module (120) is connected with the CRC encoding module (110) for performing LDPC encoding with a fixed code rate on the CRC encoded information sequence;
a puncturing module (130), wherein the puncturing module (130) is connected to the LDPC encoding module (120) for puncturing the LDPC encoded sequence according to an actual required code rate;
the signal transmitting module (140), the signal transmitting module (140) is connected with the puncturing module (130) and is used for modulating the punctured sequence to form an inter-station communication signal, and the inter-station communication signal is broadcasted to a satellite through radio frequency;
a signal receiving module (210), wherein the signal receiving module (210) is used for receiving and demodulating an inter-station communication signal forwarded by a satellite;
a puncture recovery module (220), wherein the puncture recovery module (220) is connected with the signal receiving module (210) for recovering a puncture node of the demodulated inter-station communication signal;
an LDPC decoding module (230), wherein the LDPC decoding module (230) is connected to the puncture recovery module (220) for LDPC decoding the information sequence after puncture recovery;
a CRC check module (240), wherein the CRC check module (240) is connected to the LDPC decoding module (230) for performing CRC check on the LDPC decoded information sequence to recover the original information sequence.
7. A data transmission system based on high-performance LDPC code puncturing, comprising a satellite and at least 2 ground stations, a transmitting end of any one of the ground stations comprising the CRC encoding module (110), the LDPC encoding module (120), the puncturing module (130), and the signal transmitting module (140) of claim 6; the satellite is used for forwarding inter-station communication signals between ground stations, and the receiving end of one or more ground stations comprises the signal receiving module (210), the puncturing recovery module (220), the LDPC decoding module (230) and the CRC checking module (240) of claim 6.
8. A computer device comprising a memory storing a computer program and a processor, wherein the processor is configured to implement the high performance LDPC code puncturing based data transmission method of any one of claims 1 to 5 when executing the computer program.
CN202110753353.9A 2021-07-02 2021-07-02 Data transmission method, device and system based on high-performance LDPC code punching Active CN113676240B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110753353.9A CN113676240B (en) 2021-07-02 2021-07-02 Data transmission method, device and system based on high-performance LDPC code punching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110753353.9A CN113676240B (en) 2021-07-02 2021-07-02 Data transmission method, device and system based on high-performance LDPC code punching

Publications (2)

Publication Number Publication Date
CN113676240A CN113676240A (en) 2021-11-19
CN113676240B true CN113676240B (en) 2023-04-07

Family

ID=78538502

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110753353.9A Active CN113676240B (en) 2021-07-02 2021-07-02 Data transmission method, device and system based on high-performance LDPC code punching

Country Status (1)

Country Link
CN (1) CN113676240B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108270510B (en) * 2016-12-30 2020-12-15 华为技术有限公司 Communication method and communication equipment based on LDPC code
CN110061745B (en) * 2017-06-16 2020-04-28 华为技术有限公司 Method and device for rate matching and rate de-matching
CN111162797B (en) * 2020-01-21 2023-05-30 华侨大学 Encoding device and encoding method of rate compatible 5G LDPC code
CN113055024B (en) * 2021-03-10 2022-11-25 东南大学 Correction decoding method for short-block long-low-code-rate LDPC code of 5G-NR system

Also Published As

Publication number Publication date
CN113676240A (en) 2021-11-19

Similar Documents

Publication Publication Date Title
CN105515733B (en) A kind of feedback method and device
KR102176395B1 (en) Data channel transmission and reception method, network device and terminal
CN101044710B (en) A method of formatting and encoding uplink short length data in a wireless communication system
CN103209054B (en) The method of protection signaling information
CN101390292A (en) Hierarchical coding for multicast messages
RU2211539C2 (en) Device and method for punched or repetitive data transmission
CN103001739A (en) Fountain code decoding method suitable for radio broadcasting system
RU2195072C2 (en) Mobile station and method for extending information capacity of data frame
JP6871732B2 (en) Transmitter and receiver
US20100296601A1 (en) Method and apparatus of communication using soft decision
US7821999B2 (en) Identical puncturing of UE identification data and load data in the HS-SCCH channel
US11026244B2 (en) Method and device in terminal and base station for dynamic scheduling
CN103634072A (en) Information transmission method and apparatus
US6678854B1 (en) Methods and systems for providing a second data signal on a frame of bits including a first data signal and an error-correcting code
CN113676240B (en) Data transmission method, device and system based on high-performance LDPC code punching
US20080301534A1 (en) Error control method and cooperative transfer system
CN107733573B (en) Data processing method, device and node
US6134696A (en) Encoding and decoding rate-1/n convolutional codes and their punctured versions
CN1799214A (en) Bit swapping for different interleaving depths
CN108631977B (en) Method and equipment for sending broadcast information indication
CN1326333C (en) Data transmitting/receiving apparatus and method in radio system
KR101690791B1 (en) Transmission/reception apparatus and method for frame including protocol version in ultra wide-band system
CN101686218B (en) Method for OFDM communication system to process frame prefix
CN104468441A (en) Signal coding and modulating method and device for digital interphone, signal demodulating and decoding method and device for digital interphone
CN104158628A (en) Relaying method based on uniquely decodable code

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