Adaptive-normalized/offset min-sum algorithm

  • Authors:

  • Xiaofu Wu;Yue Song;Ming Jiang;Chunming Zhao

  • Affiliations:

  • Nanjing Institute of Communications Engineering, PLA Univ.of Sci. & Tech., Nanjing, China and National Mobile Commun. Research Lab., Southeast Univ., Nanjing;PLA Univ. of Sci. & Tech., Nanjing, China;National Mobile Commun. Research Lab., Southeast University, Nanjing, China;National Mobile Commun. Research Lab., Southeast University, Nanjing, China

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2010

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Abstract

An adaptive-normalized/offset min-sum (AN-/AOMS) algorithm for decoding low-density parity-check (LDPC) codes is proposed. Unlike the normalized/offset min-sum (NMS/OMS) algorithm, the normalization/offset factor is adaptively adjusted according to the state of check nodes in each iteration. Simulation results show that the proposed AN-/AOMS algorithm can perform better than the NMS/OMS algorithm while stilI preserving the low complexity of the min-sum algorithm.