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公开(公告)号：EP3605901A1
公开(公告)日：2020-02-05
申请号：EP18817901.4
申请日：2018-06-19
IPC分类号： H04L1/00
摘要： Embodiments of the present invention disclose a coding method, a wireless device, and a chip. The coding method includes: obtaining, based on a sequence whose length is 2 n' , a mother code sequence used for coding, where the sequence whose length is 2 n' includes 2 n' sequence numbers, a length of the mother code sequence is 2 n , the mother code sequence includes 2 n sequence numbers, the 2 n sequence numbers are some or all of the 2 n' sequence numbers, n' is a natural number, and n is a natural number less than or equal to n'; and coding an input to-be-coded bit by using the mother code sequence. According to this method, a system may store only one or more long sequences, and then obtain a required mother code sequence from one of the long sequences according to a coding requirement, thereby reducing storage overheads of the system.
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公开(公告)号：EP3584972A1
公开(公告)日：2019-12-25
申请号：EP18767786.9
申请日：2018-03-12
发明人： HUANGFU, Yourui , ZHANG, Gongzheng , ZHANG, Chaolong , LI, Rong , WANG, Jun
IPC分类号： H04L1/00
摘要： A polar code encoding method and apparatus are provided. The method includes: obtaining a basic sequence, where the basic sequence is a sequence obtained by sorting sequence numbers of polarized channels in descending order or ascending order of reliability, and a length of the basic sequence is L 1 ; determining, based on a maximum encoding length L 2 supported by a receiving device, a quantity M of segments of an information bit sequence whose length is N after encoding, where a quantity of bits in the information bit sequence before the encoding is K ; and performing polar code encoding on the M segments based on the basic sequence. According to the polar code encoding method, during polar code construction, an encoding device needs to know only a reliability order of min(N/M, L 1 ) polarized channels. In this way, storage overheads of a nested sequence can be effectively reduced, and online computing complexity can be reduced.
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公开(公告)号：EP3567731A1
公开(公告)日：2019-11-13
申请号：EP18825332.2
申请日：2018-04-12
摘要： This application discloses an encoding method, an apparatus, a communications device, and a communications system. The method includes: encoding an input bit sequence by using a low density parity check (LDPC) matrix, where the LDPC matrix is obtained based on a lifting factor Z and a base matrix, and the base matrix includes row 0 to row 6 and column 0 to column 16 in one of matrices shown in FIG. 3b-1 to FIG. 3b-8 , or the base matrix includes row 0 to row 6 and some columns of column 0 to column 16 in any matrix shown in FIG. 3b-1 to FIG. 3b-8 . The encoding method, the apparatus, the communications device, and the communications system in this application can support an encoding requirement for information bit sequences with a plurality of lengths.
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公开(公告)号：EP4187794A1
公开(公告)日：2023-05-31
申请号：EP22198435.4
申请日：2017-07-13
发明人： JIN, Jie , TONG, Wen , WANG, Jun , PETIUSHKO, Aleksandr Aleksandrovich , MAZURENKO, Ivan Leonidovich , ZHANG, Chaolong
摘要： This application concerns encoding decoding of LDPC codes.using a low density parity check LDPC matrix, wherein the LDPC matrix is obtained based on a base graph and lifting, and wherein the base graph includes submatrices A, B, C, D, and E, where the submatrix A is a matrix including m A rows and n A columns, m A and n A are positive integers, 4≤ m A ≤7, and n A =10; the submatrix B is a matrix including m A rows and m A columns, and the submatrix B includes a column whose weight is 3 and a submatrix B' having a double diagonal structure; the submatrix D includes m D rows in a matrix F, the matrix F is a matrix including m F rows and ( m A + n A ) columns, m D and m F are positive integers, 0≤ m D ≤ m F , and 35≤ m F ≤38; the submatrix C is an all zero matrix including m A rows and m D columns; and the submatrix E is an identity matrix including m D rows and m D columns.
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公开(公告)号：EP3340722B1
公开(公告)日：2020-07-15
申请号：EP16843615.2
申请日：2016-09-05
发明人： ZHANG, Chaolong , WANG, Jian , QIAO, Yunfei
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公开(公告)号：EP3637649A1
公开(公告)日：2020-04-15
申请号：EP18806092.5
申请日：2018-05-24
发明人： WANG, Jian , QIAO, Yunfei , ZHANG, Gongzheng , ZHANG, Chaolong , WANG, Guijie
IPC分类号： H04L1/00
摘要： This application provides a coding and decoding method and apparatus. The method includes: performing, by a transmit end, polarization coding on first to-be-coded information, to obtain first coded information with a bit sequence length of M, where M is a positive integer; sending, by the transmit end, the first coded information on a first channel corresponding to the first to-be-coded information; performing, by the transmit end, polarization coding on second to-be-coded information, to obtain second coded information with a bit sequence length of 2M, where the second to-be-coded information includes the first to-be-coded information, and differences between sequence numbers of information bits corresponding to the first to-be-coded information and sequence numbers of information bits at (M+1) th to 2M th bit positions in information bits corresponding to the second to-be-coded information are sequentially M in ascending order of sequence numbers; and sending, by the transmit end, the second coded information on a second channel corresponding to the second to-be-coded information. Therefore, coding and decoding performance can be improved.
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公开(公告)号：EP3629481A1
公开(公告)日：2020-04-01
申请号：EP18823969.3
申请日：2018-06-27
IPC分类号： H03M13/11
摘要： This application discloses an encoding method, an apparatus, a communications device, and a communications system. The method includes: encoding an input bit sequence by using a low density parity check LDPC matrix, where the LDPC matrix is obtained based on a lifting factor Z and a base matrix, and the base matrix includes a row 0 to a row 4 and a column 0 to a column 26 in one of matrices shown in FIG. 3b-1A to FIG. 3b-8B , or the base matrix includes a row 0 to a row 4 and some of a column 0 to a column 26 in one of matrices shown in FIG. 3b-1A to FIG. 3b-8B . According to the encoding method, the apparatus, the communications device, and the communications system, channel coding requirements can be met.
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公开(公告)号：EP3624350A1
公开(公告)日：2020-03-18
申请号：EP17912101.7
申请日：2017-06-03
IPC分类号： H03M13/47
摘要： This application discloses an information processing method and apparatus, a communications device, and a communications system. The method includes: encoding an input sequence by using a low density parity check LDPC matrix to obtain a bit sequence D, where a base matrix of the LDPC matrix is represented by a matrix of m rows and n columns, each column corresponds to a group of Z continuous bits in the bit sequence D, and both n and Z are integers greater than 0; and obtaining an output bit sequence based on a bit sequence V, where the bit sequence V is obtained by permuting groups of bits corresponding to at least two parity check columns in the bit sequence D. According to the information processing method and apparatus, the communications device, and the communications system in this application, performance requirements of an LDPC code at a high code rate can be supported.
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公开(公告)号：EP3562045A1
公开(公告)日：2019-10-30
申请号：EP18753899.6
申请日：2018-02-06
发明人： LUO, Hejia , DAI, Shengchen , CHEN, Ying , ZHANG, Gongzheng , LI, Rong , ZHANG, Chaolong
摘要： This application discloses a transmission method, a transmission apparatus, and a communications device. The transmission method includes: performing polar polar encoding on a bit sequence, to obtain an encoded sequence, where the bit sequence includes control information and a cyclic redundancy check CRC sequence; fragmenting the encoded sequence, to obtain n encoded subsequences, where n is an integer, and n>0; and scrambling the n encoded subsequences by using n scrambling sequences respectively, to obtain n scrambled sequences. In the transmission method, the n scrambling sequences are newly defined based on encoding and decoding features of a polar code, and the n scrambling sequences additionally carry ┌log 2 n┐ -bit information. According to the foregoing encoding method, signaling overheads are reduced.
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公开(公告)号：EP3562044A1
公开(公告)日：2019-10-30
申请号：EP18735815.5
申请日：2018-01-05
发明人： WANG, Guijie , ZHANG, Gongzheng , QIAO, Yunfei , WANG, Jian , ZHANG, Chaolong , LI, Rong
IPC分类号： H03M13/13
摘要： Disclosed is a data encoding method. The method includes: receiving a to-be-encoded data block; encoding the data block at an aggregation level of 2L, where a formula used during the encoding is as follows: u ˙ 2 L u ˙ L G LN 0 G LN G LN = C ˙ 2 L C ˙ L u · L = u L u L − 1 … u 1 , u · 2 L = u 2 L u 2 L − 1 … u L + 1 , c · L = c L c L − 1 ⋯ c 1 , c · 2 L = c 2 L c 2 L − 1 ⋯ c L + 1 , G LN = G N ⊗ log 2 L
L=2 n , and n is a natural number greater than or equal to 0; and outputting an encoded data block.
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