基于校验式可信度的比特翻转LDPC译码算法

Check of Reliability-Based Bit-Flipping Decoding Algorithm for LDPC Codes

提出一种基于校验式可信度的比特翻转(CR-BF)低密度奇偶校验(LDPC)译码算法,及其改进.该算法利用校验式的可信度作为比特翻转准则,并参考校验式的错误个数,每次迭代翻转多个比特.仿真结果表明,与加权比特翻转(WBF)算法相比,该算法加快了迭代收敛速度,改善了误码性能.

In this paper, a check of reliability-based bit-flipping （Check Reliability-based Bit Flipping, CR-BF） decoding algorithm for Low Density Parity Check（LDPC） Code is proposed. The CR-BF algorithm flips bits based on the reliability of parity-check equations. Then the number of error paritycheck equations is considered to flip more than 1 bit in each iteration. Simulation results show that the proposed algorithms converge faster and achieve better performance.