Title:
IMPROVED QC-LDPC CODES
Document Type and Number:
WIPO Patent Application WO/2018/202143
Kind Code:
A1
Abstract:
An apparatus determines a code block size (CBS) of information bits contained in a codeword of low-density parity check (LDPC) coding. The apparatus compares the CBS with at least one threshold, determines, based on a result of the comparison, a Kb number and determines a Kp number based on a code rate and the Kb number. The apparatus generates a parity check matrix. An information portion of the parity check matrix is a first matrix formed by M number of second square matrices. M is equal to Kp multiplied by Kb. A total number of columns in the Kb number of second square matrices is equal to a total number of bits of the CBS. One or more matrices of the M number of second square matrices are circular permutation matrices. The apparatus operates an LDPC encoder or an LDPC decoder based on the parity check matrix.
Inventors:
HSU CHENG-YI (CN)
LEE CHONG-YOU (CN)
CHEN WEI-JEN (CN)
CHIU MAO-CHING (CN)
FISHER-JEFFES TIMOTHY PERRIN (US)
CHEN JU-YA (CN)
CHANG YEN-SHUO (CN)
LEE CHONG-YOU (CN)
CHEN WEI-JEN (CN)
CHIU MAO-CHING (CN)
FISHER-JEFFES TIMOTHY PERRIN (US)
CHEN JU-YA (CN)
CHANG YEN-SHUO (CN)
Application Number:
PCT/CN2018/085648
Publication Date:
November 08, 2018
Filing Date:
May 04, 2018
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H03M13/11
Other References:
ZTE ET AL.: "Compact LDPC design for eMBB", 3GPP TSG RAN WGI AH NR MEETING R1-1701473, 20 January 2017 (2017-01-20), XP051222469
ZTE CORP. ET AL.: "Discussion on LDPC codes for NR", 3GPP TSG RAN WGI #86 R1-166414, 26 August 2016 (2016-08-26), XP051142384
ZTE ET AL.: "Consideration on LDPC design forNR", 3GPP TSG RAN WGI #86BIS R1-1608974, 14 October 2016 (2016-10-14), XP051159229
INTEL CORPORATION.: "LDPC code design for NR", 3GPP TSG RAN WGI MEETING #85 R1-164183, 27 May 2016 (2016-05-27), XP051090075
See also references of EP 3602795A4
ZTE CORP. ET AL.: "Discussion on LDPC codes for NR", 3GPP TSG RAN WGI #86 R1-166414, 26 August 2016 (2016-08-26), XP051142384
ZTE ET AL.: "Consideration on LDPC design forNR", 3GPP TSG RAN WGI #86BIS R1-1608974, 14 October 2016 (2016-10-14), XP051159229
INTEL CORPORATION.: "LDPC code design for NR", 3GPP TSG RAN WGI MEETING #85 R1-164183, 27 May 2016 (2016-05-27), XP051090075
See also references of EP 3602795A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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