Efficient Early Termination Criterion for ADMM Penalized LDPC Decoder
Biao Wang, Xiaopeng Jiao, Jianjun Mu, Zhongfei Wang · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2018
By tracking the changing rate of hard decisions during every two consecutive iterations of the alternating direction method of multipliers (ADMM) penalized decoding, an efficient early termination (ET) criterion is proposed to improve the convergence rate of ADMM penalized decoder for low-density parity-check (LDPC) codes. Compared to the existing ET criterion for ADMM penalized decoding, the proposed method can reduce the average number of iterations significantly at low signal-to-noise ratios with negligible performance degradation.