Shaping Phenomenon and Optimal Design for Irregular LDPC Codes with Specified Block Length

• DOI: 10.1007/s11277-015-2414-2
• Publication Date: 2015-02-21T06:20:55Z
• Authors: Jiancun Zuo; Lin Gui; Hua Zhang
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

This paper proposes a shaping technique for the design of irregular low-density parity-check (LDPC) codes, based on which a practical optimal design algorithm for irregular LDPC codes with specified block length is presented. Simulation results show that the optimized codes at moderate block length with less computation cost can also beat Turbo codes, which demonstrates that the proposed algorithm is effective.