Adaptive Distributed CRC-aided SCL Decoder with Flip Operations for Polar Codes
Jing Huan, Hang Yin, Yansong Lv · 2022 7th International Conference on Image, Vision and Computing (ICIVC) · 2022
Polar codes are used for image transmission due to unequal error protection. Meanwhile, a low-complexity polar code decoder helps to reduce the energy loss during polar code decoding. Therefore, this paper proposes a new decoder with low complexity, called adaptive distributed cyclic-redundancy-checkaided successive cancellation list decoder with flip operations (ADD-SCLF). By combining the adaptive scheme and the distributed cyclic redundancy check (CRC) bit scheme, the decoder can find the correct path with lower average computational complexity and end the failed decoding process earlier simultaneously. Simulation results show that our ADD-SCLF decoder can reduce the computational complexity by up to 17.16% compared to the current adaptive ordered shifted-pruning list (ADOSPL) decoder.