Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (6): 1151-1155.doi: 10.3969/j.issn.1001-506X.2010.06.010

• 电子技术 • 上一篇    下一篇

基于粒子群算法的非规则LDPC码度序列设计

李森1, 王洁1, 马林华2   

  1. 1. 空军工程大学导弹学院, 陕西 三原 713800; 2. 空军工程大学工程学院, 陕西 西安 710038
  • 出版日期:2010-06-28 发布日期:2010-01-03

Design of degree sequence for irregular LDPC codes on PSO

LI Sen1, WANG Ji1, MA Lin-Hua2   

  1. 1. Missile Inst., Air Force Engineering Univ., Sanyuan 713800, China; 2. Engineering Inst., Air Force Engineering Univ., Xi’an 710038, China
  • Online:2010-06-28 Published:2010-01-03

摘要:

研究了非规则低密度奇偶校验(low-density parity-check, LDPC)码度序列阈值计算方法,详细讨论了构造具有较高阈值度序列的步骤与约束条件的处理,提出了一种基于粒子群优化(particle swarm optimization, PSO)算法的度序列优化方法。仿真了此方法的寻优效果,给出了一些接近Shannon限的优秀度序列和分析比较。

Abstract:

The algorithm of threshold calculation for low-density parity-check (LDPC) codes is investigated. The design steps of degreesequence which has higher threshold and the process of constrained problem are discussed in detail. A method of degreesequence design for LDPC on particle swarm optimization (PSO) is presented. The analysis and comparison of estimation result and some capacityapproaching degree-sequences are also given.