适用于LDPC码快速译码的加权比特翻转算法(英文)

• 作 者: 马克祥 李勇朝 张海林
• 机 构: National Key Laboratory on ISN,Xidian University,
• 出 处: 中国通信
• 发表日期: 2013年09期
• 关键词: decoding LDPC decoder identically codes iteration validity verify transmit posed

Abstract:Because of the speed limitation of the conventional bit-selection strategy in the existing weighted bit flipping algorithms,a highspeed Low-Density Parity-Check(LDPC)decoder cannot be realised.To solve this problem,we propose a fast weighted bit flipping algorithm.Specifically,based on the identically distributed error bits,a parallel bit-selection method is proposed to reduce the selection delay of the flipped bits.The delay analysis demonstrates that,the decoding speed of LDPC codes can be significantly improved by the proposed algorithm.Furthermore,simulation results verify the validity of the proposed algorithm.

Abstract: Because of the speed limitation of the conventional bit-selection strategy in the existing weighted bit flipping algorithms, a highspeed Low-Density Parity-Check (LDPC) decoder can not be realized.To solve this problem, we propose a fast weighted bit flipping algorithm.Specifically, based on the identically distributed error bits, a parallel bit-selection method is proposed to reduce the selection delay of the flipped bits. delay analysis demonstrates that, the decoding speed of LDPC codes can be significantly improved by the proposed algorithm .Furthermore, simulation results verify the validity of the proposed algorithm.