公开(公告)号：US20250167810A1

公开(公告)日：2025-05-22

申请号：US18839563

申请日：2023-02-01

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Mo HAO ,  Linglong DAI ,  Jieao ZHU ,  Zhongzhichao WAN ,  Richard MACKENZIE

IPC: H03M13/29 ,  H03M13/11 ,  H03M13/13

Abstract: A method of encoding a concatenated polar code is provided, including evaluating channel reliabilities; selecting channels based on each channel's relative reliability; constructing a polar code of information bits arranged with a front and a rear; attaching additional cyclic redundancy checking (CRC) bits to the rear of the information bits; inserting parity bits at proper locations to yield a bit string; feeding the bit string into a polar encoder; and obtaining a codeword. A successive cancellation list and bit flipping decoding method for concatenated polar code also is provided, including initializing a LLR of the codeword; screening paths; performing a CRC check on the screened paths and if the CRC check is not met; determining, in response to the CRC check not being met, at least one most unreliable bit based on a revised critical set (RCS); reversing a previous decision if the most unreliable bit was previously selected; and restarting the decoding method.