Post-Processing for CRC-Aided Successive Cancellation List Decoding of Polar Codes
Chung-Hsuan Wang, Yaoxin Pan, Yu-Heng Lin, Yeong-Luh Ueng · IEEE Communications Letters · 2020
In this letter, three post-processing schemes for cyclic redundancy check (CRC-)aided successive cancellation list (CA-SCL) decoding are presented for polar codes. The re-decoding based on our post-processing schemes can effectively alleviate both the channel and decision errors encountered via CA-SCL decoding. Simulation results show that our schemes perform better than conventional re-decoding schemes and can be incorporated into a polar decoder that has a small list size to achieve a performance that is expected for a large list size.