Title:
ENCODING AND MODULATION METHOD AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/099196
Kind Code:
A1
Abstract:
The present application discloses a low-density parity-check (LDPC) code encoding and modulation method and a communication device related to the field of wireless communications for resolving the unsatisfactory transmission performance and low transmission reliability of current modulation methods. More specifically, the method comprises: acquiring an information bit sequence Sb, and encoding the information bit sequence Sb by using an LDPC matrix H to acquire a encoded code sequence Sc; modulating the code sequence Sc to acquire a modulated symbol sequence SM, wherein a bit in a least-reliable code block in the code sequence Sc is mapped to a constellation-modulated non-least-reliable bit position during the modulation process; and transmitting the modulated symbol sequence SM to a receiving end. The technical solution provided by the present application provides all symbols in the modulated symbol sequence SM with higher reliability and balance, effectively reducing a bit error rate, enhancing encoding performance and achieving reliable transmission.
Inventors:
YU RONGDAO (CN)
Application Number:
PCT/CN2017/106115
Publication Date:
June 07, 2018
Filing Date:
October 13, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L1/00
Foreign References:
| CN101043483A | 2007-09-26 | |||
| CN101005333A | 2007-07-25 |
Other References:
LI, Y. ET AL.: "Bit-Reliability Mapping in LDPC-Coded Modulation Systems", IEEE COMMUNICATIONS LETTERS, vol. 9, no. 1, 31 January 2005 (2005-01-31), XP001211457, DOI: doi:10.1109/LCOMM.2005.1375222
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