Generalized SCAN Bit-Flipping Decoding Algorithm for Polar Code

• DOI: 10.3837/tiis.2023.04.014
• Publication Date: 2023-05-03T02:43:57Z
• Authors: Lou Chen; Guo Rui
• Keywords: Bit (key); Code (set theory); Polar code

In this paper, based on the soft cancellation (SCAN) bit-flipping (SCAN-BF) algorithm, a generalized SCAN (GSCAN-BF-Ω ) decoding algorithm is carried out, where Ω represents number of bits flipped or corrected at same time.GSCAN-BF-Ω corrects prior information code and flips unreliable simultaneously to improve block error rate (BLER) performance.Then, joint threshold scheme for GSCAN-BF-2 proposed reduce average complexity by considering both bit channel quality reliability coded bits.Simulation results show that GSCAN-BF-Ω reduces latency while getting performance gains compared common multiple algorithm.And with further approximately 50% only slight loss algorithm.