北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (6): 135-138.doi: 10.13190/jbupt.200706.135.032

• 研究报告 • 上一篇    

有限长LDPC码的打孔方案设计

温娜, 徐永太, 张平   

  1. (1. 北京邮电大学 泛网无线通信教育部重点实验室,北京100876;2. 北京邮电大学 无线新技术研究所,北京100876)
  • 收稿日期:2007-01-11 修回日期:2007-06-04 出版日期:2007-12-31 发布日期:2007-12-31
  • 通讯作者: 温娜

Design of Puncturing Scheme for Finite-Length LDPC Codes

WEN Na, XU Yong-tai, ZHANG Ping   

  1. (1. Key Laboratory of Universal Wireless Communications Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2007-01-11 Revised:2007-06-04 Online:2007-12-31 Published:2007-12-31
  • Contact: WEN Na

摘要:

提出了一种有限长低密度校验码(LDPC码)的打孔方案。该方案以使码的平均girth最大化为准则,确定了打孔位的选取方法。仿真结果表明,与随机选取码位的方法相比得到了性能增益,降低了有限码长的误码地板,解决了LDPC码在实际系统应用中的打孔问题。

关键词: 有限码长, 低密度校验码, 打孔

Abstract:

Proposed a puncturing scheme for finite-length low density parity check code (LDPC) codes. According to the rule of making the average girth maximum, we got the indices of the punctured bits. Simulation results show signal to noise ratio(SNR) gain has been achieved compared to random puncturing scheme. The proposed scheme alleviates the error floor and resolves the puncturing problem in the practice system.

Key words: finite length code, low density parity check code, puncturing

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